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The year of 2023 was the second-warmest on record for the UK, narrowly behind the record set as recently as 2022.

It was also the warmest year on record for Wales and Northern Ireland, second-warmest for England and third-warmest for Scotland.

In this review, we look back at the UK’s climate in 2023, the significant climate events that shaped the year and how human-caused climate change influenced them. We find:

  • Eight of the 12 months of the year were warmer than average.
  • Somewhat unusually, the warmest periods were in June and September, with the high summer months of July and August generally cooler and wetter.
  • June was the hottest month of the year for the first time since 1966 and was the hottest June on record by a large margin.
  • Through a climate attribution analysis, we show that a year as warm as 2023 has been made around 150 times more likely due to human-caused climate change.
  • We would expect to reach or exceed the 2023 annual temperature in around 33% of years in the current climate.
  • 2023 was relatively wet with 1,290mm of rainfall, making it the UK’s 11th wettest year in a series going back to 1836.
  • The few wintery cold spells of the year were relatively short-lived.
  • 2023-24 has seen the most active start to the storm season since naming storms began in 2015.

(See our previous annual analysis for 2022, 2021, 2020, 2019 and 2018.)

The year in summary

The Met Office produces the HadUK-Grid dataset for monitoring the UK climate. Using geostatistical methods, we combine UK observational data from land-based stations across the country into a gridded, geographically complete dataset.

There is enough coverage of observational data in our digital archives for national coverage of monthly temperature since 1884, rainfall since 1836 and sunshine since 1910. These are used to define long-running climate series and climatological averages, which provide context for variability and change in the UK’s climate through time.

The maps below show the average anomalies compared to 1991-2020 for temperature (left), rainfall (middle) and sunshine duration (right) across the UK during 2023. The darkest shading shows the areas of the country that saw the warmest (red), driest (brown) and sunniest (yellow) conditions relative to the baseline climate.

The maps show that 2023 was, for most of the country, a warm and wet year compared to average, with close to average sunshine overall. The exception to this being western Scotland which saw drier and sunnier conditions.

Maps showing anomalies relative to a 1991-2020 reference period
Maps showing anomalies relative to a 1991-2020 reference period for (left) temperature (C), (middle) precipitation (%) and (right) sunshine (%). The darker shading indicates the greater departure from average. Credit: Met Office

The UK annual average temperature was 9.97C for 2023, which is just 0.06C below the record high of 10.03C in 2022. This continues an observed warming of the UK climate since the 1960s.

The hottest year in the UK during the whole of the 20th century was 1997, with an average temperature of 9.41C. So far in the 21st century, 13 years have exceeded this value, meaning that the majority of years so far in the 21st century have exceeded what was the hottest year of the 20th century.

In contrast, the coldest year of the 21st century so far was 2010 (7.94C) which was more than 0.5C warmer than the coldest year of the 20th century in 1963 (7.40C).

While 2010 is an extreme-cold year in the context of the current UK climate, it would have been much closer to the average for the late 19th and early 20th century. Climate change has significantly reduced the occurrence and severity of cooler conditions in the UK.

Looking regionally, the map below colour-codes UK counties by the ranking of annual average temperature.

The darkest shade of red identifies those counties that recorded their warmest year in 2023. It was the warmest year on record for all of Northern Ireland and Wales, and also for counties in western England and south-west Scotland.

The year 2022 retains the record for the majority of England and Scotland, with the exception of far north Scotland (for which the warmest year on record was 2014), Western Isles (2006), Orkney (2003) and Shetland (2014).

In addition, 2023 is also provisionally the warmest year on record for Ireland in the 124 year national series maintained by Met Eireann.

Map showing the relative ranking of average 2023 temperature for UK counties.
Map showing the relative ranking of average 2023 temperature for UK counties. Darker red shading indicates warmer temperatures. Credit: Met Office

Central England Temperature record

The year of 2023 was also the second-warmest year in the Met Office Central England Temperature series (CET), marginally behind 2022. The CET represents a region bounded by Hertfordshire, Worcestershire and Lancashire.

The chart below compares the records for the CET (black) and whole UK (red) for annual average temperature.

While there are inevitable differences in the precise ranking and anomalies of individual years between UK and CET, the series show the strong overall level of agreement. It also highlights how unusual the temperature of 2022 and 2023 are in the context of more than 360 years of observational data.  

Timeseries of annual mean temperature anomaly relative to a 1961-90 baseline
Timeseries of annual mean temperature anomaly relative to a 1961-90 baseline for (red) UK and (black) Central England Temperature. Dashed horizontal lines represent the 1991-2020 climatology for each series (which is 0.8C warmer than 1961-90 for both series). Credit: Met Office

Extremes and rainfall

The UK climate monitoring network records both daily maximum and daily minimum temperatures.

Last year was the record highest for the annual average daily minimum temperature for the UK, England, Wales and Northern Ireland, and fourth highest for Scotland.

It was the highest annual average daily maximum temperature for Northern Ireland, second-highest for the UK, England and Wales, and third-highest for Scotland.

The year of 2023 was relatively wet with 1,290mm of rainfall, equivalent to 111% of UK average rainfall and putting it just outside the top 10 as the 11th wettest year in a series going back to 1836.

It was the sixth wettest March and July, seventh wettest October and ninth wettest December. In addition, 2023 is the only year that has four individual months within the top 10 wettest on record for the respective month.

The wet spells of March and July followed dry spells during February and June, but it was the higher-than-average rainfall through the autumn and into December that pushed up the annual accumulation for the year overall.

As the chart below shows, there has been an observed increase in UK annual rainfall over recent decades, with 2023 joining a cluster of notably wet years that have occurred since the late 1990s.

The lines show the annual rainfall (dark blue) and trend (black dashes), along with the 1991-2020 average (pink), 2023 total (brown) and the highest (red dashes) and lowest (blue dashes) annual totals on record.

The drivers of annual rainfall trends are complex as the annual total masks distribution of rainfall throughout the year and will respond to a multitude of factors, which will include human-caused climate change but also contributions from natural climate variability.

Timeseries of annual UK rainfall amount from 1836 to 2023 with the trend represented by a black dashed line.
Timeseries of annual UK rainfall amount from 1836 to 2023 with the trend represented by a black dashed line. The 1991-2020 average is shown in pink and the highest and lowest values in the series are shown by the red and blue dashed lines, respectively. The 2023 value (latest) is represented by the horizontal brown line (1290mm). Credit: Met Office

Attribution of UK annual mean temperature in 2023

Met Office scientists conducted an attribution study to quantify the influence of human-caused climate change on the likelihood of reaching a UK annual average temperature at or above that recorded in 2023.

The method uses an established Met Office system for rapid attribution of extreme events. The analysis uses observed values of the UK annual temperature and temperature data for the UK drawn from 14 climate model simulations from the sixth – and most recent – phase of the global Coupled Model Intercomparison Project.

The models are evaluated against the observational data across the period 1884-2014 using approaches commonly adopted for attribution studies. This determines whether they are suitable for use in the assessment and provide adequate representations of UK annual average temperature trends and variability.

One set of model simulations uses only natural climate forcings (“NAT”) for the period 1850-2020, while another set uses all natural and human-caused forcings (“ALL”) for the historical period and the SSP2-4.5 emissions scenario, often described as a “medium” emissions scenario, out to 2100.

These simulations are then able to provide estimates of the likelihood of the UK annual temperature exceeding the observed 2023 value for the following scenarios:

  • A natural climate without human-caused greenhouse gases.
  • The current climate taken as a 20-year period centred on 2023.
  • An end-of-century climate under a medium emissions scenario taken as the period 2081-2100.

A reference baseline for all the experiments is the period 1901-30.

The estimated return period for a UK annual average temperature exceeding 9.97C in the NAT simulations is once every 460 years (with a range of 82 to 587). For the ALL simulations in the present day, this drops to once every three years (with a range of 2.86 to 3.17). For the ALL simulations in the future, this falls further and could see temperatures warmer than 2023 being exceeded more frequently than every other year.

Human-caused climate change is, therefore, estimated to have increased the likelihood of a year as warm as 2023 by a factor of more than 150.

These results are, unsurprisingly, very similar to an equivalent study conducted a year ago in relation to the record-breaking annual mean temperature of 10.03C set in 2022. Regarding that study, we stated:

“A warming climate means that an event that would have been exceptionally unlikely in the past has become one that we will increasingly see in the coming decades.”

Importantly, this analysis also indicates that 2022 and 2023 are not necessarily that extreme in the context of our current climate. This means that there is the potential for a far higher UK annual average temperature extreme even in the present-day climate. In addition, by the end of the 21st century, most years will be warmer than 2023.

Weather through the year

Temperature

The chart below tracks UK average temperatures through the year, with orange highlighting periods that were warmer than the 1991-2020 average for the time of year and blue were cooler than average.

Timeseries of daily UK average temperature during 2023.
Timeseries of daily UK average temperature during 2023. Orange shading are periods of above average temperature, blue shading is below average, and the solid black line is the 1991-2020 climatology by day of the year. The grey shading reflects the 5th, 10th, 90th and 95th percentiles of the temperature distribution and the red and blue lines are the highest and lowest values for each day of the year based on a dataset of daily data from 1960 to 2022. Credit: Met Office

Overall, 66% of days (240 days) were warmer than the 1991-2020 average for the time of year and 34% (125 days) were colder. The most notable warm spells were in June, September and December.

The highest maximum temperature of the year was 33.5C at Faversham (Kent) on 10 September, which is only the fifth time a highest maximum has been recorded in September. This is equal to the 1991-2020 average annual maximum temperature, so it is close to what we would expect as the highest UK temperature for a typical year. However, it is 2.3C higher than the average maximum during the earlier period of 1961-90 (31.2C).

In September, there was also a run of seven consecutive days with temperatures somewhere in the UK exceeding 30C, which is the longest such run in September on record.

The lowest temperature of the year was -16.0C, recorded at Altnaharra (Sutherland) on 9 March during a spell of wintry weather. This is 0.5C below the 1991-2020 average (-15.5C), but 3C above the 1961-90 average (-19.0C) for the year’s coldest day.

In 2023, both the hottest and coldest weather of the year occurred outside of the climatological summer and winter season, a reminder of the variable nature of the UK climate.

Both the highest maximum and lowest minimum temperature of the year for the UK have been increasing at a faster rate than the UK average temperature, reflecting that heat extremes are becoming more severe while cold extremes are becoming less severe in our warming climate.

Rainfall

For rainfall, the wettest periods were seen in March, July, October and December.

In the chart below, the rainfall accumulation is tracked through the course of the year. The solid black line is the 1991-2020 average, the grey shading reflects the variability across years with the red and blue marking the highest and lowest on record. Brown shading highlights points in the year where the total rainfall since the start of the year was below average, and blue regions are where it is above average.

The chart highlights that a dry spell in February was compensated by the wet March, and the dry spell through May and June was followed by a wet July, returning the year to near-average by the start of autumn.

Timeseries showing rainfall accumulation through 2023 for the UK.
Timeseries showing rainfall accumulation through 2023 for the UK. Brown shading represents a deficit in rainfall compared to average for that point in the year, and blue shading is an excess of rainfall compared to average. The solid line represents the 1991-2020 average, grey shading shows the 5th, 10th, 90th and 95th percentiles of the distribution, and blue and red the lowest and highest values based on a dataset of daily rainfall from 1891 to 2022. Credit: Met Office

Western Scotland was an exception to this rainfall pattern, with a somewhat drier autumn in particular, although wetter conditions in the east, including some extreme rainfall such as during storm Babet in October, meant that Scotland overall was still wetter than average. For England it was the sixth wettest year on record, third wettest for Northern Ireland, 12th for Wales and 32nd for Scotland.

Storms

The Met Office storm naming, first launched in 2015, provides a storm name list for the period from 1 September to 31 August each year in collaboration with Met Eireann and KNMI, the Irish and Dutch national weather services, respectively.

The 2022-23 storm season was rather notable for the relative absence of storms, with the only storms to be named under this scheme both occurring right at the end of the season in August – storms Antoni (5 August) and Betty (18-19 August).

In contrast, the 2023-24 season has experienced a much more active start with seven named storms from September to December, and the eighth (storm Henk) in early January 2024, which is the most active start to the named storm season since its inception in 2015.

Storm Name Dates affected UK Maximum wind gust Number of observing sites recording wind gusts over 50 knots
2022-23 names
Otto 17 February (named by Danish Meteorological Service) 72 Kt (83mph) Inverbervie, Kincardineshire 31
Noa 12 April (named by Meteo-France) 83 Kt (96mph) Needles, Isle of Wight 25
Antoni 5 August 68 Kt (78mph) Berry Head, Devon 2
Betty 18-19 August 57 Kt (66mph) Capel Curig, Conwy 5
2023-24 names
Agnes 27-28 September 73 Kt (84mph) Capel Curig, Conwy 15
Babet 18-21 October 67 Kt (77mph) Inverbervie, Kincardineshire 16
Ciarán 1-2 November 68 Kt (77mph) Langdon Bay, Kent 11
Debi 13 November 67 Kt (77mph) Aberdaron, Gwynedd 21
Elin 9 December 70 Kt (81mph) Capel Curig, Conwy 13
Fergus 10 December 64 Kt (74mph) Aberdaron, Gwynedd 11
Gerrit 27-28 December 77 Kt (89mph) Fair Isle, Shetland 42
Henk 2 January 2024 82 Kt (94mph) Needles, Isle of Wight 35

List of named storms for the 2022-23 and 2023-24 storm seasons

Overall, 2023 was calmer than average. This reflects a long-term decline in average wind speed, as illustrated in the chart below. This shows average UK wind speeds for each year since 1969 (dark blue line), the trend (black dashes), 1991-2020 average (pink), 2023 total (brown) and the highest (red dashes) and lowest (blue dashes) annual averages on record.

This long-term trend should be interpreted with some caution as it is possible that changes in instrumentation and exposure of the observing network through time may influence these trends. However, the decline is consistent with a widespread global slowdown termed “global stilling”.

More recently, global and UK data have shown that since 2010 the decline has stopped or even reversed.

Timeseries showing UK annual average wind speed over 1969-2023 (dark blue line) with the trend represented by a black dashed line.
Timeseries showing UK annual average wind speed over 1969-2023 (dark blue line) with the trend represented by a black dashed line. The 1991-2020 average is shown in pink and the highest and lowest values in the series are shown by the red and blue dashed lines, respectively. The 2023 value (latest) is represented by the horizontal brown line. Credit: Met Office

Winter

After a notably wet spell at the start of the year – resulting in flooding across south Wales and Midlands on the 12 January – the late winter period was characterised by a very sunny January and very dry February overall.

It was the driest February since 1993 with much of central and southern England, which received less than 20% of the normal monthly rainfall.

The climatological winter season (1 December 2022 to 28 February 2023) was drier than average and – as discussed above – relatively calm with just one named storm (Otto) occurring in an otherwise dry February.

The chart below depicts UK winter rainfall per year (dark blue line) since 1836. While 2023 was relatively, but not exceptionally, dry in the context of recent decades, it is closer to the average for earlier in the series. The winter of 2022-23 had 83% of the 1991-2020 average rainfall, but 94% compared to the earlier period of 1961-90.

Timeseries of winter (Dec-Feb) UK rainfall amount from 1836 to 2023 with the trend represented by a black dashed line.
Timeseries of winter (Dec-Feb) UK rainfall amount from 1836 to 2023 with the trend represented by a black dashed line. The 1991-2020 average is shown in pink and the highest and lowest values in the series are shown by the red and blue dashed lines respectively. Credit: Met Office

Comparing 1991-2020 to 1961-90, winter rainfall for the UK has risen by 14%. The increase is not uniform across the UK, however, with the greatest increases in excess of 20% across north and west Scotland, and smaller rises below 10% for central and southern England.

It is notable that, in a series stretching back to 1836, the five wettest winters have all occurred since 1990. The record wettest winter of 2013-14 had approximately double the rainfall of 2023, highlighting the large interannual variability in UK rainfall.

In contrast, at the time of writing, wet weather through the first half of the 2023-24 winter has resulted in widespread flooding across the country.

Climate variability is a critical driver in recent extremes of winter rainfall, while the emerging climate change signal resulting from increased moisture in the atmosphere is an important secondary factor contributing to the risk of wetter winters.

UK climate projections indicate a clear shift to higher probability of wet winters over the UK. This is caused by an increase in the number of wet days, an increase in intensity of rainfall, and a decrease in the proportion of winter precipitation falling as snow.

Spring

The first half of March was generally cold and resulted in some of the lowest temperatures of the year.

By the middle of the month, the situation became milder and wetter. March was exceptionally wet for many regions except for northern Scotland. It was the sixth-wettest March for the UK, third-wettest for England and Northern Ireland and fifth-wettest for Wales.

April saw temperature and rainfall statistics near-average, although Storm Noa was one of the most significant April storms since 2013, with hundreds of homes across south-west England and Wales left without power.

A maximum wind gust of 83 Kt (96mph) at Needles on the Isle of Wight was the highest wind gust on record for England during the month of April. This particular site is located at the top of a cliff exposed to westerly winds so is representative of a very exposed coastal location. Inland winds were lower, but still sufficient to cause some disruption.

May was warmer and drier overall, although heavy thunderstorms over 7-11 May caused surface-water flooding across parts of southern and eastern England. Drier weather from the middle of the month, however, resulted in a shift to wildfire reports across parts of Wales, the south-west and west Yorkshire by the end of the month.

Summer

It was the warmest June on record for the UK with an average temperature of 15.8C, beating the previous record of 14.9C that was set in the Junes of 1940 and 1976 by 0.9C. Previously, the top three warmest Junes were separated by just 0.1C.

The highest daily temperature reached in the month was 32.2C (on 10 and 25 June), which did not challenge the June temperature record of 35.6C, recorded on 28 June 1976. What was unusual about June 2023 was the persistence of the warmth rather than its severity. Temperatures exceeded 25C for at least a fortnight with peaks in excess of 30C.

A long-standing curious statistical quirk of UK climatology was that 13 June was the only June date that had never previously recorded temperatures in excess of 30C in meteorological records spanning over 100 years. This quirky fact was finally broken this year, reaching 30.8C on 13 June.

The chart below shows a comparison of the 2023 June heatwave with 1976, the previous joint record warmest June. This shows the UK-average daily maximum temperature through June and July for 1976 (dotted line and grey shading) and 2023 (blue line and orange shading).

The 1976 heatwave was certainly more severe than 2023, but occurred slightly later in the season, peaking in early July. In contrast, the persistent warmth in 2023 fell within the calendar month of June.

Timeseries showing UK averaged daily maximum temperature from 1t June to 31 July for 2023 and 1976.
Timeseries showing UK averaged daily maximum temperature from 1t June to 31 July for 2023 and 1976. The shaded regions show UK average maximum temperature above 15C for 2023 (orange) and 1976 (grey).

A significant contributing factor to the exceptional and persistent warmth was a major North Atlantic marine heatwave, which brought record-breaking temperatures in the North Atlantic and around the UK. A severe marine heatwave was declared in mid-June, which further amplified temperatures over the UK land.

An attribution study by the Met Office found that the likelihood of beating the UK land June temperature record had at least doubled compared to when it was first set in 1940. We estimated there was around a 3% chance of beating the record in a 1991-2020 climate and, by the 2050s, a record could be occurring around every other year on average under a high-emissions scenario.

Unsurprisingly, the June warmth was associated with a persistent high-pressure system resulting in plenty of clear skies and dry conditions. The month was, therefore, also the fourth sunniest June on record, and the sunniest June since 1957, but not as sunny as the exceptionally sunny month of May 2020.

Some more unsettled weather at the end of the month meant that while recording only around 68% of average rainfall, June was not dry enough to trouble any records.

A more unsettled situation then took over for the remainder of the summer, with conditions turning cooler, duller and windier.

It was the sixth-wettest July on record with 140.1mm and the wettest since 2009 (145.5mm). It was the wettest July on record for Northern Ireland and for parts of north-west England including Merseyside, Lancashire and Greater Manchester.

August continued the unsettled theme with a distinct lack of summery weather – however, it was not as wet as July.

A key driver of the wet high summer was a displacement in the jet stream to a more southerly track across the UK. The map below shows anomalies in wind speed at 250hPa, relative to a 1991-2020 average. (250hPa is a level of equal pressure and is equivalent to a height of around 10.5km.)

The purple regions show where the wind is stronger than average and orange they are weaker – highlighting a strengthening of the upper-level wind across southern England and a weakening in the more typical summer jet stream to the north of Scotland. This resulted in low-pressure weather systems from the Atlantic being directed on a more southerly track over the UK.

Map showing anomalies (ms-1) in 250hPa wind speed.
Map showing anomalies (ms-1) in 250hPa wind speed. Arrows show the direction of the anomaly. Image created by Met Office using ERA5 data from the Copernicus Climate Change Service Climate Data Store (CDS)

Despite being relatively wet during the high summer (July through August), the average temperature averaged across July (14.9C) and August (15.3C) was 15.1C. This was cooler than June (15.8C), but close to the 1991-2020 average for Jul-Aug (15.2C).

Another indicator of the influence of climate change on UK climate is that a wet summer such as that of 2023 is approximately 1C warmer than equivalently wet summers from the past.

Autumn (and December)

In early September, the jet stream shifted north and high pressure returned. Consequently, the UK experienced another heatwave bringing some of the hottest weather of the year, peaking at 33.5C at Faversham, Kent on 10 September.

A new high-temperature record was also set for the month for Northern Ireland with 28C at Castlederg, County Tyrone on the 8 September.

It was the longest run of days reaching 30C somewhere in the country during September on record at seven consecutive days (4-10 September). It is only the fourth time on record that the highest temperature of the year has occurred in September, with the other years being 2016, 1954, 1949 and 1919. High temperatures were not confined to the daytime and some locations also recorded “tropical nights” when the minimum temperatures do not drop below 20C.

The month concluded with Storm Agnes kicking off the 2023-24 storm season. But the early warmth contributed to it becoming the joint-warmest September on record for the UK (with 2006). An average temperature of 15.2C was warmer than July and only marginally behind August.

A rapid attribution conducted at the time showed that a September this warm would be exceptionally unlikely in a natural climate, but in our current climate there is approximately a 3% chance of reaching or exceeding it. A September this warm does still require the right combination of factors, but climate change is making such late-season warmth more likely.

The remainder of the autumn season and December continued the generally mild, wet and – at times – stormy theme, with the joint-sixth wettest October and joint-eighth wettest December on record. It was the sixth-warmest autumn for the UK and third-warmest for both England and Wales.

Reviewing 2023 demonstrates how the UK is subject to the combined influences of the variability in the weather, but also the influence of human-caused climate change. This is affecting both our climate statistics and also the likelihood of some types of extreme events.

The post Met Office: A review of the UK’s climate in 2023  appeared first on Carbon Brief.

Met Office: A review of the UK’s climate in 2023 

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Heatwaves driving recent ‘surge’ in compound drought and heat extremes

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Drought and heatwaves occurring together – known as “compound” events – have “surged” across the world since the early 2000s, a new study shows. 

Compound drought and heat events (CDHEs) can have devastating effects, creating the ideal conditions for intense wildfires, such as Australia’s “Black Summer” of 2019-20 where bushfires burned 24m hectares and killed 33 people.

The research, published in Science Advances, finds that the increase in CDHEs is predominantly being driven by events that start with a heatwave.

The global area affected by such “heatwave-led” compound events has more than doubled between 1980-2001 and 2002-23, the study says.

The rapid increase in these events over the last 23 years cannot be explained solely by global warming, the authors note.

Since the late 1990s, feedbacks between the land and the atmosphere have become stronger, making heatwaves more likely to trigger drought conditions, they explain.

One of the study authors tells Carbon Brief that societies must pay greater attention to compound events, which can “cause severe impacts on ecosystems, agriculture and society”.

Compound events

CDHEs are extreme weather events where drought and heatwave conditions occur simultaneously – or shortly after each other – in the same region.

These events are often triggered by large-scale weather patterns, such as “blocking” highs, which can produce “prolonged” hot and dry conditions, according to the study.

Prof Sang-Wook Yeh is one of the study authors and a professor at the Ewha Womans University in South Korea. He tells Carbon Brief:

“When heatwaves and droughts occur together, the two hazards reinforce each other through land-atmosphere interactions. This amplifies surface heating and soil moisture deficits, making compound events more intense and damaging than single hazards.”

CDHEs can begin with either a heatwave or a drought.

The sequence of these extremes is important, the study says, as they have different drivers and impacts.

For example, in a CDHE where the heatwave was the precursor, increased direct sunshine causes more moisture loss from soils and plants, leading to a drought.

Conversely, in an event where the drought was the precursor, the lack of soil moisture means that less of the sun’s energy goes into evaporation and more goes into warming the Earth’s surface. This produces favourable conditions for heatwaves.

The study shows that the majority of CDHEs globally start out as a drought.

In recent years, there has been increasing focus on these events due to the devastating impact they have on agriculture, ecosystems and public health.

In Russia in the summer of 2010, a compound drought-heatwave event – and the associated wildfires – caused the death of nearly 55,000 people, the study notes.

Saint Basil's Cathedral, on Red Square, in Moscow, was affected by smog during the fires in Russia in the summer of 2010.
Saint Basil’s Cathedral, on Red Square, in Moscow, was affected by smog during the fires in Russia in the summer of 2010. Credit: ZUMA Press, Inc. / Alamy Stock Photo

The record-breaking Pacific north-west “heat dome” in 2021 triggered extreme drought conditions that caused “significant declines” in wheat yields, as well as in barley, canola and fruit production in British Columbia and Alberta, Canada, says the study.

Increasing events

To assess how CDHEs are changing, the researchers use daily reanalysis data to identify droughts and heatwaves events. (Reanalysis data combines past observations with climate models to create a historical climate record.) Then, using an algorithm, they analyse how these events overlap in both time and space.

The study covers the period from 1980 to 2023 and the world’s land surface, excluding polar regions where CDHEs are rare.

The research finds that the area of land affected by CDHEs has “increased substantially” since the early 2000s.

Heatwave-led events have been the main contributor to this increase, the study says, with their spatial extent rising 110% between 1980-2001 and 2002-23, compared to a 59% increase for drought-led events.

The map below shows the global distribution of CDHEs over 1980-2023. The charts show the percentage of the land surface affected by a heatwave-led CDHE (red) or a drought-led CDHE (yellow) in a given year (left) and relative increase in each CDHE type (right).

The study finds that CDHEs have occurred most frequently in northern South America, the southern US, eastern Europe, central Africa and south Asia.

Charts showing spatial and temporal occurrences over study period
Spatial and temporal occurrence of compound drought and heatwave events over the study period from 1980 to 2023. The map (top) shows CDHEs around the world, with darker colours indicating higher frequency of occurrence. The chart in the bottom left shows how much land surface was affected by a compound event in a given year, where red accounts for heatwave-led events, and yellow, drought-led events. The chart in the bottom right shows the relative increase of each CDHE type in 2002-23 compared with 1980-2001. Source: Kim et al. (2026)

Threshold passed

The authors explain that the increase in heatwave-led CDHEs is related to rising global temperatures, but that this does not tell the whole story.

In the earlier 22-year period of 1980-2001, the study finds that the spatial extent of heatwave-led CDHEs rises by 1.6% per 1C of global temperature rise. For the more-recent period of 2022-23, this increases “nearly eightfold” to 13.1%.

The change suggests that the rapid increase in the heatwave-led CDHEs occurred after the global average temperature “surpasse[d] a certain temperature threshold”, the paper says.

This threshold is an absolute global average temperature of 14.3C, the authors estimate (based on an 11-year average), which the world passed around the year 2000.

Investigating the recent surge in heatwave-leading CDHEs further, the researchers find a “regime shift” in land-atmosphere dynamics “toward a persistently intensified state after the late 1990s”.

In other words, the way that drier soils drive higher surface temperatures, and vice versa, is becoming stronger, resulting in more heatwave-led compound events.

Daily data

The research has some advantages over other previous studies, Yeh says. For instance, the new work uses daily estimations of CDHEs, compared to monthly data used in past research. This is “important for capturing the detailed occurrence” of these events, says Yeh.

He adds that another advantage of their study is that it distinguishes the sequence of droughts and heatwaves, which allows them to “better understand the differences” in the characteristics of CDHEs.

Dr Meryem Tanarhte is a climate scientist at the University Hassan II in Morocco, and Dr Ruth Cerezo Mota is a climatologist and a researcher at the National Autonomous University of Mexico. Both scientists, who were not involved in the study, agree that the daily estimations give a clearer picture of how CDHEs are changing.

Cerezo-Mota adds that another major contribution of the study is its global focus. She tells Carbon Brief that in some regions, such as Mexico and Africa, there is a lack of studies on CDHEs:

“Not because the events do not occur, but perhaps because [these regions] do not have all the data or the expertise to do so.”

However, she notes that the reanalysis data used by the study does have limitations with how it represents rainfall in some parts of the world.

Compound impacts

The study notes that if CDHEs continue to intensify – particularly events where heatwaves are the precursors – they could drive declining crop productivity, increased wildfire frequency and severe public health crises.

These impacts could be “much more rapid and severe as global warming continues”, Yeh tells Carbon Brief.

Tanarhte notes that these events can be forecasted up to 10 days ahead in many regions. Furthermore, she says, the strongest impacts can be prevented “through preparedness and adaptation”, including through “water management for agriculture, heatwave mitigation measures and wildfire mitigation”.

The study recommends reassessing current risk management strategies for these compound events. It also suggests incorporating the sequences of drought and heatwaves into compound event analysis frameworks “to enhance climate risk management”.

Cerezo-Mota says that it is clear that the world needs to be prepared for the increased occurrence of these events. She tells Carbon Brief:

“These [risk assessments and strategies] need to be carried out at the local level to understand the complexities of each region.”

The post Heatwaves driving recent ‘surge’ in compound drought and heat extremes appeared first on Carbon Brief.

Heatwaves driving recent ‘surge’ in compound drought and heat extremes

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DeBriefed 6 March 2026: Iran energy crisis | China climate plan | Bristol’s ‘pioneering’ wind turbine

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Welcome to Carbon Brief’s DeBriefed. 
An essential guide to the week’s key developments relating to climate change.

This week

Energy crisis

ENERGY SPIKE: US-Israeli attacks on Iran and subsequent counterattacks across the Middle East have sent energy prices “soaring”, according to Reuters. The newswire reported that the region “accounts for just under a third of global oil production and almost a fifth of gas”. The Guardian noted that shipping traffic through the strait of Hormuz, which normally ferries 20% of the world’s oil, “all but ground to a halt”. The Financial Times reported that attacks by Iran on Middle East energy facilities – notably in Qatar – triggered the “biggest rise in gas prices since Russia’s full-scale invasion of Ukraine”.

‘RISK’ AND ‘BENEFITS’: Bloomberg reported on increases in diesel prices in Europe and the US, speculating that rising fuel costs could be “a risk for president Donald Trump”. US gas producers are “poised to benefit from the big disruption in global supply”, according to CNBC. Indian government sources told the Economic Times that Russia is prepared to “fulfil India’s energy demands”. China Daily quoted experts who said “China’s energy security remains fundamentally unshaken”, thanks to “emergency stockpiles and a wide array of import channels”.

‘ESSENTIAL’ RENEWABLES: Energy analysts said governments should cut their fossil-fuel reliance by investing in renewables, “rather than just seeking non-Gulf oil and gas suppliers”, reported Climate Home News. This message was echoed by UK business secretary Peter Kyle, who said “doubling down on renewables” was “essential” amid “regional instability”, according to the Daily Telegraph.

China’s climate plan

PEAK COAL?: China has set out its next “five-year plan” at the annual “two sessions” meeting of the National People’s Congress, including its climate strategy out to 2030, according to the Hong Kong-based South China Morning Post. The plan called for China to cut its carbon emissions per unit of gross domestic product (GDP) by 17% from 2026 to 2030, which “may allow for continued increase in emissions given the rate of GDP growth”, reported Reuters. The newswire added that the plan also had targets to reach peak coal ​in the next five years and replace 30m tonnes per year of coal with renewables.

ACTIVE YET PRUDENT: Bloomberg described the new plan as “cautious”, stating that it “frustrat[es] hopes for tighter policy that would drive the nation to peak carbon emissions well before president Xi Jinping’s 2030 deadline”. Carbon Brief has just published an in-depth analysis of the plan. China Daily reported that the strategy “highlights measures to promote the climate targets of peaking carbon dioxide emissions before 2030”, which China said it would work towards “actively yet prudently”. 

Around the world

  • EU RULES: The European Commission has proposed new “made in Europe” rules to support domestic low-carbon industries, “against fierce competition from China”, reported Agence France-Presse. Carbon Brief examined what it means for climate efforts.
  • RECORD HEAT: The US National Oceanic and Atmospheric Administration has said there is a 50-60% chance that the El Niño weather pattern could return this year, amplifying the effect of global warming and potentially driving temperatures to “record highs”, according to Euronews.
  • FLAGSHIP FUND: The African Development Bank’s “flagship clean energy fund” plans to more than double its financing to $2.5bn for African renewables over the next two years, reported the Associated Press.
  • NO WITHDRAWAL: Vanuatu has defied US efforts to force the Pacific-island nation to drop a UN draft resolution calling on the world to implement a landmark International Court of Justice (ICJ) ruling on climate, according to the Guardian.

98

The number of nations that submitted their national reports on tackling nature loss to the UN on time – just half of the 196 countries that are part of the UN biodiversity treaty – according to analysis by Carbon Brief.


Latest climate research

  • Sea levels are already “much higher than assumed” in most assessments of the threat posed by sea-level rise, due to “inadequate” modelling assumptions | Nature
  • Accelerating human-caused global warming could see the Paris Agreement’s 1.5C limit crossed before 2030 | Geophysical Research Letters covered by Carbon Brief
  • Future “super El Niño events” could “significantly lower” solar power generation due to a reduction in solar irradiance in key regions, such as California and east China | Communications Earth & Environment

(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)

Captured

UK greenhouse gas emissions in 2025

UK greenhouse gas emissions in 2025 fell to 54% below 1990 levels, the baseline year for its legally binding climate goals, according to new Carbon Brief analysis. Over the same period, data from the World Bank shows that the UK’s economy has expanded by 95%, meaning that emissions have been decoupling from growth.

Spotlight

Bristol’s ‘pioneering’ community wind turbine

Following the recent launch of the UK government’s local power plan, Carbon Brief visits one of the country’s community-energy success stories.

The Lawrence Weston housing estate is set apart from the main city of Bristol, wedged between the tree-lined grounds of a stately home and a sprawl of warehouses and waste incinerators. It is one of the most deprived areas in the city.

Yet, just across the M5 motorway stands a structure that has brought the spoils of the energy transition directly to this historically forgotten estate – a 4.2 megawatt (MW) wind turbine.

The turbine is owned by local charity Ambition Lawrence Weston and all the profits from its electricity sales – around £100,000 a year – go to the community. In the UK’s local power plan, it was singled out by energy secretary Ed Miliband as a “pioneering” project.

‘Sustainable income’

On a recent visit to the estate by Carbon Brief, Ambition Lawrence Weston’s development manager, Mark Pepper, rattled off the story behind the wind turbine.

In 2012, Pepper and his team were approached by the Bristol Energy Cooperative with a chance to get a slice of the income from a new solar farm. They jumped at the opportunity.

Austerity measures were kicking in at the time,” Pepper told Carbon Brief. “We needed to generate an income. Our own, sustainable income.”

With the solar farm proving to be a success, the team started to explore other opportunities. This began a decade-long process that saw them navigate the Conservative government’s “ban” on onshore wind, raise £5.5m in funding and, ultimately, erect the turbine in 2023.

Today, the turbine generates electricity equivalent to Lawrence Weston’s 3,000 households and will save 87,600 tonnes of carbon dioxide (CO2) over its lifetime.

Ambition Lawrence Weston’s Mark Pepper and the wind turbine.
Ambition Lawrence Weston’s Mark Pepper and the wind turbine. Artwork: Josh Gabbatiss

‘Climate by stealth’

Ambition Lawrence Weston’s hub is at the heart of the estate and the list of activities on offer is seemingly endless: birthday parties, kickboxing, a library, woodworking, help with employment and even a pop-up veterinary clinic. All supported, Pepper said, with the help of a steady income from community-owned energy.

The centre itself is kitted out with solar panels, heat pumps and electric-vehicle charging points, making it a living advertisement for the net-zero transition. Pepper noted that the organisation has also helped people with energy costs amid surging global gas prices.

Gesturing to the England flags dangling limply on lamp posts visible from the kitchen window, he said:

“There’s a bit of resentment around immigration and scarcity of materials and provision, so we’re trying to do our bit around community cohesion.”

This includes supper clubs and an interfaith grand iftar during the Muslim holy month of Ramadan.

Anti-immigration sentiment in the UK has often gone hand-in-hand with opposition to climate action. Right-wing politicians and media outlets promote the idea that net-zero policies will cost people a lot of money – and these ideas have cut through with the public.

Pepper told Carbon Brief he is sympathetic to people’s worries about costs and stressed that community energy is the perfect way to win people over:

“I think the only way you can change that is if, instead of being passive consumers…communities are like us and they’re generating an income to offset that.”

From the outset, Pepper stressed that “we weren’t that concerned about climate because we had other, bigger pressures”, adding:

“But, in time, we’ve delivered climate by stealth.”

Watch, read, listen

OIL WATCH: The Guardian has published a “visual guide” with charts and videos showing how the “escalating Iran conflict is driving up oil and gas prices”.

MURDER IN HONDURAS: Ten years on from the murder of Indigenous environmental justice advocate Berta Cáceres, Drilled asked why Honduras is still so dangerous for environmental activists.

TALKING WEATHER: A new film, narrated by actor Michael Sheen and titled You Told Us To Talk About the Weather, aimed to promote conversation about climate change with a blend of “poetry, folk horror and climate storytelling”.

Coming up

Pick of the jobs

DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org.

This is an online version of Carbon Brief’s weekly DeBriefed email newsletter. Subscribe for free here.

The post DeBriefed 6 March 2026: Iran energy crisis | China climate plan | Bristol’s ‘pioneering’ wind turbine appeared first on Carbon Brief.

DeBriefed 6 March 2026: Iran energy crisis | China climate plan | Bristol’s ‘pioneering’ wind turbine

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Q&A: What does China’s 15th ‘five-year plan’ mean for climate change?

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China’s leadership has published a draft of its 15th five-year plan setting the strategic direction for the nation out to 2030, including support for clean energy and energy security.

The plan sets a target to cut China’s “carbon intensity” by 17% over the five years from 2026-30, but also changes the basis for calculating this key climate metric.

The plan continues to signal support for China’s clean-energy buildout and, in general, contains no major departures from the country’s current approach to the energy transition.

The government reaffirms support for several clean-energy industries, ranging from solar and electric vehicles (EVs) through to hydrogen and “new-energy” storage.

The plan also emphasises China’s willingness to steer climate governance and be seen as a provider of “global public goods”, in the form of affordable clean-energy technologies.

However, while the document says it will “promote the peaking” of coal and oil use, it does not set out a timeline and continues to call for the “clean and efficient” use of coal.

This shows that tensions remain between China’s climate goals and its focus on energy security, leading some analysts to raise concerns about its carbon-cutting ambition.

Below, Carbon Brief outlines the key climate change and energy aspects of the plan, including targets for carbon intensity, non-fossil energy and forestry.

Note: this article is based on a draft published on 5 March and will be updated if any significant changes are made in the final version of the plan, due to be released at the close next week of the “two sessions” meeting taking place in Beijing.

What is China’s 15th five-year plan?

Five-year plans are one of the most important documents in China’s political system.

Addressing everything from economic strategy to climate policy, they outline the planned direction for China’s socio-economic development in a five-year period. The 15th five-year plan covers 2026-30.

These plans include several “main goals”. These are largely quantitative indicators that are seen as particularly important to achieve and which provide a foundation for subsequent policies during the five-year period.

The table below outlines some of the key “main goals” from the draft 15th five-year plan.

Category Indicator Indicator in 2025 Target by 2030 Cumulative target over 2026-2030 Characteristic
Economic development Gross domestic product (GDP) growth (%) 5 Maintained within a reasonable range and proposed annually as appropriate. Anticipatory
‘Green and low-carbon Reduction in CO2 emissions per unit of GDP (%) 17.7 17 Binding
Share of non-fossil energy in total energy consumption (%) 21.7 25 Binding
Security guarantee Comprehensive energy production
capacity (100m tonnes of
standard coal equivalent)
51.3 58 Binding

Select list of targets highlighted in the “main goals” section of the draft 15th five-year plan. Source: Draft 15th five-year plan.

Since the 12th five-year plan, covering 2011-2015, these “main goals” have included energy intensity and carbon intensity as two of five key indicators for “green ecology”.

The previous five-year plan, which ran from 2021-2025, introduced the idea of an absolute “cap” on carbon dioxide (CO2) emissions, although it did not provide an explicit figure in the document. This has been subsequently addressed by a policy on the “dual-control of carbon” issued in 2024.

The latest plan removes the energy-intensity goal and elevates the carbon-intensity goal, but does not set an absolute cap on emissions (see below).

It covers the years until 2030, before which China has pledged to peak its carbon emissions. (Analysis for Carbon Brief found that emissions have been “flat or falling” since March 2024.)

The plans are released at the two sessions, an annual gathering of the National People’s Congress (NPC) and the Chinese People’s Political Consultative Conference (CPPCC). This year, it runs from 4-12 March.

The plans are often relatively high-level, with subsequent topic-specific five-year plans providing more concrete policy guidance.

Policymakers at the National Energy Agency (NEA) have indicated that in the coming years they will release five sector-specific plans for 2026-2030, covering topics such as the “new energy system”, electricity and renewable energy.

There may also be specific five-year plans covering carbon emissions and environmental protection, as well as the coal and nuclear sectors, according to analysts.

Other documents published during the two sessions include an annual government work report, which outlines key targets and policies for the year ahead.

The gathering is attended by thousands of deputies – delegates from across central and local governments, as well as Chinese Communist party members, members of other political parties, academics, industry leaders and other prominent figures.

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What does the plan say about China’s climate action?

Achieving China’s climate targets will remain a key driver of the country’s policies in the next five years, according to the draft 15th five-year plan.

It lists the “acceleration” of China’s energy transition as a “major achievement” in the 14th five-year plan period (2021-2025), noting especially how clean-power capacity had overtaken fossil fuels.

The draft says China will “actively and steadily advance and achieve carbon peaking”, with policymakers continuing to strike a balance between building a “green economy” and ensuring stability.

Climate and environment continues to receive its own chapter in the plan. However, the framing and content of this chapter has shifted subtly compared with previous editions, as shown in the table below. For example, unlike previous plans, the first section of this chapter focuses on China’s goal to peak emissions.

11th five-year plan (2006-2010) 12th five-year plan (2011-2015) 13th five-year plan (2016-2020) 14th five-year plan (2021-2025) 15th five-year plan (2026-2030)
Chapter title Part 6: Build a resource-efficient and environmentally-friendly society Part 6: Green development, building a resource-efficient and environmentally friendly society Part 10: Ecosystems and the environment Part 11: Promote green development and facilitate the harmonious coexistence of people and nature Part 13: Accelerating the comprehensive green transformation of economic and social development to build a beautiful China
Sections Developing a circular economy Actively respond to global climate change Accelerate the development of functional zones Improve the quality and stability of ecosystems Actively and steadily advancing and achieving carbon peaking
Protecting and restoring natural ecosystems Strengthen resource conservation and management Promote economical and intensive resource use Continue to improve environmental quality Continuously improving environmental quality
Strengthening environmental protection Vigorously develop the circular economy Step up comprehensive environmental governance Accelerate the green transformation of the development model Enhancing the diversity, stability, and sustainability of ecosystems
Enhancing resource management Strengthen environmental protection efforts Intensify ecological conservation and restoration Accelerating the formation of green production and lifestyles
Rational utilisation of marine and climate resources Promoting ecological conservation and restoration Respond to global climate change
Strengthen the development of water conservancy and disaster prevention and mitigation systems Improve mechanisms for ensuring ecological security
Develop green and environmentally-friendly industries

Title and main sections of the climate and environment-focused chapters in the last five five-year plans. Source: China’s 11th, 12th, 13th, 14th and 15th five-year plans.

The climate and environment chapter in the latest plan calls for China to “balance [economic] development and emission reduction” and “ensure the timely achievement of carbon peak targets”.

Under the plan, China will “continue to pursue” its established direction and objectives on climate, Prof Li Zheng, dean of the Tsinghua University Institute of Climate Change and Sustainable Development (ICCSD), tells Carbon Brief.

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What is China’s new CO2 intensity target?

In the lead-up to the release of the plan, analysts were keenly watching for signals around China’s adoption of a system for the “dual-control of carbon”.

This would combine the existing targets for carbon intensity – the CO2 emissions per unit of GDP – with a new cap on China’s total carbon emissions. This would mark a dramatic step for the country, which has never before set itself a binding cap on total emissions.

Policymakers had said last year that this framework would come into effect during the 15th five-year plan period, replacing the previous system for the “dual-control of energy”.

However, the draft 15th five-year plan does not offer further details on when or how both parts of the dual-control of carbon system will be implemented. Instead, it continues to focus on carbon intensity targets alone.

Looking back at the previous five-year plan period, the latest document says China had achieved a carbon-intensity reduction of 17.7%, just shy of its 18% goal.

This is in contrast with calculations by Lauri Myllyvirta, lead analyst at the Centre for Research on Energy and Clean Air (CREA), which had suggested that China had only cut its carbon intensity by 12% over the past five years.

At the time it was set in 2021, the 18% target had been seen as achievable, with analysts telling Carbon Brief that they expected China to realise reductions of 20% or more.

However, the government had fallen behind on meeting the target.

Last year, ecology and environment minister Huang Runqiu attributed this to the Covid-19 pandemic, extreme weather and trade tensions. He said that China, nevertheless, remained “broadly” on track to meet its 2030 international climate pledge of reducing carbon intensity by more than 65% from 2005 levels.

Myllyvirta tells Carbon Brief that the newly reported figure showing a carbon-intensity reduction of 17.7% is likely due to an “opportunistic” methodological revision. The new methodology now includes industrial process emissions – such as cement and chemicals – as well as the energy sector.

(This is not the first time China has redefined a target, with regulators changing the methodology for energy intensity in 2023.)

For the next five years, the plan sets a target to reduce carbon intensity by 17%, slightly below the previous goal.

However, the change in methodology means that this leaves space for China’s overall emissions to rise by “3-6% over the next five years”, says Myllyvirta. In contrast, he adds that the original methodology would have required a 2% fall in absolute carbon emissions by 2030.

The dashed lines in the chart below show China’s targets for reducing carbon intensity during the 12th, 13th, 14th and 15th five-year periods, while the bars show what was achieved under the old (dark blue) and new (light blue) methodology.

China reports meeting its latest carbon-intensity target after a change in methodology.
Dashed lines: China’s carbon-intensity targets during the 12th, 13th, 14th and 15th five-year plan periods. Bars: China’s achieved carbon-intensity reductions according to either the old methodology (dark blue) and the new one (light blue). The achieved reductions during the 12th and 13th five-year plans are from contemporaneous government statistics and may be revised in future. The reduction figures for the 14th five-year plan period are sourced from government statistics for the new methodology and analysis by CREA under the old methodology. Sources: Five-year plans and Carbon Brief.

The carbon-intensity target is the “clearest signal of Beijing’s climate ambition”, says Li Shuo, director at the Asia Society Policy Institute’s (ASPI) China climate hub.

It also links directly to China’s international pledge – made in 2021 – to cut its carbon intensity to more than 65% below 2005 levels by 2030.

To meet this pledge under the original carbon-intensity methodology, China would have needed to set a target of a 23% reduction within the 15th five-year plan period. However, the country’s more recent 2035 international climate pledge, released last year, did not include a carbon-intensity target.

As such, ASPI’s Li interprets the carbon-intensity target in the draft 15th five-year plan as a “quiet recalibration” that signals “how difficult the original 2030 goal has become”.

Furthermore, the 15th five-year plan does not set an absolute emissions cap.

This leaves “significant ambiguity” over China’s climate plans, says campaign group 350 in a press statement reacting to the draft plan. It explains:

“The plan was widely expected to mark a clearer transition from carbon-intensity targets toward absolute emissions reductions…[but instead] leaves significant ambiguity about how China will translate record renewable deployment into sustained emissions cuts.”

Myllyvirta tells Carbon Brief that this represents a “continuation” of the government’s focus on scaling up clean-energy supply while avoiding setting “strong measurable emission targets”.

He says that he would still expect to see absolute caps being set for power and industrial sectors covered by China’s emissions trading scheme (ETS). In addition, he thinks that an overall absolute emissions cap may still be published later in the five-year period.

Despite the fact that it has yet to be fully implemented, the switch from dual-control of energy to dual-control of carbon represents a “major policy evolution”, Ma Jun, director of the Institute of Public and Environmental Affairs (IPE), tells Carbon Brief. He says that it will allow China to “provide more flexibility for renewable energy expansion while tightening the net on fossil-fuel reliance”.

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Does the plan encourage further clean-energy additions?

“How quickly carbon intensity is reduced largely depends on how much renewable energy can be supplied,” says Yao Zhe, global policy advisor at Greenpeace East Asia, in a statement.

The five-year plan continues to call for China’s development of a “new energy system that is clean, low-carbon, safe and efficient” by 2030, with continued additions of “wind, solar, hydro and nuclear power”.

In line with China’s international pledge, it sets a target for raising the share of non-fossil energy in total energy consumption to 25% by 2030, up from just under 21.7% in 2025.

The development of “green factories” and “zero-carbon [industrial] parks” has been central to many local governments’ strategies for meeting the non-fossil energy target, according to industry news outlet BJX News. A call to build more of these zero-carbon industrial parks is listed in the five-year plan.

Prof Pan Jiahua, dean of Beijing University of Technology’s Institute of Ecological Civilization, tells Carbon Brief that expanding demand for clean energy through mechanisms such as “green factories” represents an increasingly “bottom-up” and “market-oriented” approach to the energy transition, which will leave “no place for fossil fuels”.

He adds that he is “very much sure that China’s zero-carbon process is being accelerated and fossil fuels are being driven out of the market”, pointing to the rapid adoption of EVs.

The plan says that China will aim to double “non-fossil energy” in 10 years – although it does not clarify whether this means their installed capacity or electricity generation, or what the exact starting year would be.

Research has shown that doubling wind and solar capacity in China between 2025-2035 would be “consistent” with aims to limit global warming to 2C.

While the language “certainly” pushes for greater additions of renewable energy, Yao tells Carbon Brief, it is too “opaque” to be a “direct indication” of the government’s plans for renewable additions.

She adds that “grid stability and healthy, orderly competition” is a higher priority for policymakers than guaranteeing a certain level of capacity additions.

China continues to place emphasis on the need for large-scale clean-energy “bases” and cross-regional power transmission.

The plan says China must develop “clean-energy bases…in the three northern regions” and “integrated hydro-wind-solar complexes” in south-west China.

It specifically encourages construction of “large-scale wind and solar” power bases in desert regions “primarily” for cross-regional power transmission, as well as “major hydropower” projects, including the Yarlung Tsangpo dam in Tibet.

As such, the country should construct “power-transmission corridors” with the capacity to send 420 gigawatts (GW) of electricity from clean-energy bases in western provinces to energy-hungry eastern provinces by 2030, the plan says.

State Grid, China’s largest grid operator, plans to install “another 15 ultra-high voltage [UHV] transmission ​lines” by 2030, reports Reuters, up from the 45 UHV lines built by last year.

Below are two maps illustrating the interlinkages between clean-energy bases in China in the 15th (top) and 14th (bottom) five-year plan periods.

The yellow dotted areas represent clean energy bases, while the arrows represent cross-regional power transmission. The blue wind-turbine icons represent offshore windfarms and the red cooling tower icons represent coastal nuclear plants.

Maps showing layout of key energy projects in China during 2026-2030 (top) and 2021-2025 (bottom). Source: Chinese government’s 15th five-year plan and 14th five-year plan.
Maps showing layout of key energy projects in China during 2026-2030 (top) and 2021-2025 (bottom). Source: Chinese government’s 15th five-year plan and 14th five-year plan.
Maps showing layout of key energy projects in China during 2026-2030 (top) and 2021-2025 (bottom). Source: Chinese government’s 15th five-year plan and 14th five-year plan.

The 15th five-year plan map shows a consistent approach to the 2021-2025 period. As well as power being transmitted from west to east, China plans for more power to be sent to southern provinces from clean-energy bases in the north-west, while clean-energy bases in the north-east supply China’s eastern coast.

It also maps out “mutual assistance” schemes for power grids in neighbouring provinces.

Offshore wind power should reach 100GW by 2030, while nuclear power should rise to 110GW, according to the plan.

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What does the plan signal about coal?

The increased emphasis on grid infrastructure in the draft 15th five-year plan reflects growing concerns from energy planning officials around ensuring China’s energy supply.

Ren Yuzhi, director of the NEA’s development and planning department, wrote ahead of the plan’s release that the “continuous expansion” of China’s energy system has “dramatically increased its complexity”.

He said the NEA felt there was an “urgent need” to enhance the “secure and reliable” replacement of fossil-fuel power with new energy sources, as well as to ensure the system’s “ability to absorb them”.

Meanwhile, broader concerns around energy security have heightened calls for coal capacity to remain in the system as a “ballast stone”.

The plan continues to support the “clean and efficient utilisation of fossil fuels” and does not mention either a cap or peaking timeline for coal consumption.

Xi had previously told fellow world leaders that China would “strictly control” coal-fired power and phase down coal consumption in the 15th five-year plan period.

The “geopolitical situation is increasing energy security concerns” at all levels of government, said the Institute for Global Decarbonization Progress in a note responding to the draft plan, adding that this was creating “uncertainty over coal reduction”.

Ahead of its publication, there were questions around whether the plan would set a peaking deadline for oil and coal. An article posted by state news agency Xinhua last month, examining recommendations for the plan from top policymakers, stated that coal consumption would plateau from “around 2027”, while oil would peak “around 2026”.

However, the plan does not lay out exact years by which the two fossil fuels should peak, only saying that China will “promote the peaking of coal and oil consumption”.

There are similarly no mentions of phasing out coal in general, in line with existing policy.

Nevertheless, there is a heavy emphasis on retrofitting coal-fired power plants. The plan calls for the establishment of “demonstration projects” for coal-plant retrofitting, such as through co-firing with biomass or “green ammonia”.

Such retrofitting could incentivise lower utilisation of coal plants – and thus lower emissions – if they are used to flexibly meet peaks in demand and to cover gaps in clean-energy output, instead of providing a steady and significant share of generation.

The plan also calls for officials to “fully implement low-carbon retrofitting projects for coal-chemical industries”, which have been a notable source of emissions growth in the past year.

However, the coal-chemicals sector will likely remain a key source of demand for China’s coal mining industry, with coal-to-oil and coal-to-gas bases listed as a “key area” for enhancing the country’s “security capabilities”.

Meanwhile, coal-fired boilers and industrial kilns in the paper industry, food processing and textiles should be replaced with “clean” alternatives to the equivalent of 30m tonnes of coal consumption per year, it says.

“China continues to scale up clean energy at an extraordinary pace, but the plan still avoids committing to strong measurable constraints on emissions or fossil fuel use”, says Joseph Dellatte, head of energy and climate studies at the Institut Montaigne. He adds:

“The logic remains supply-driven: deploy massive amounts of clean energy and assume emissions will eventually decline.”

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How will China approach global climate governance in the next five years?

Meanwhile, clean-energy technologies continue to play a role in upgrading China’s economy, with several “new energy” sectors listed as key to its industrial policy.

Named sectors include smart EVs, “new solar cells”, new-energy storage, hydrogen and nuclear fusion energy.

“China’s clean-technology development – rather than traditional administrative climate controls – is increasingly becoming the primary driver of emissions reduction,” says ASPI’s Li. He adds that strengthening China’s clean-energy sectors means “more closely aligning Beijing’s economic ambitions with its climate objectives”.

Analysis for Carbon Brief shows that clean energy drove more than a third of China’s GDP growth in 2025, representing around 11% of China’s whole economy.

The continued support for these sectors in the draft five-year plan comes as the EU outlined its own measures intended to limit China’s hold on clean-energy industries, driven by accusations of “unfair competition” from Chinese firms.

China is unlikely to crack down on clean-tech production capacity, Dr Rebecca Nadin, director of the Centre for Geopolitics of Change at ODI Global, tells Carbon Brief. She says:

“Beijing is treating overcapacity in solar and smart EVs as a strategic choice, not a policy error…and is prepared to pour investment into these sectors to cement global market share, jobs and technological leverage.”

Dellatte echoes these comments, noting that it is “striking” that the plan “barely addresses the issue of industrial overcapacity in clean technologies”, with the focus firmly on “scaling production and deployment”.

At the same time, China is actively positioning itself to be a prominent voice in climate diplomacy and a champion of proactive climate action.

This is clear from the first line in a section on providing “global public goods”. It says:

“As a responsible major country, China will play a more active role in addressing global challenges such as climate change.”

The plan notes that China will “actively participate in and steer [引领] global climate governance”, in line with the principle of “common,but differentiated responsibilities”.

This echoes similar language from last year’s government work report, Yao tells Carbon Brief, demonstrating a “clear willingness” to guide global negotiations. But she notes that this “remains an aspiration that’s yet to be made concrete”. She adds:

“China has always favored collective leadership, so its vision of leadership is never a lone one.”

The country will “deepen south-south cooperation on climate change”, the plan says. In an earlier section on “opening up”, it also notes that China will explore “new avenues for collaboration in green development” with global partners as part of its “Belt and Road Initiative”.

China is “doubling down” on a narrative that it is a “responsible major power” and “champion of south-south climate cooperation”, Nadin says, such as by “presenting its clean‑tech exports and finance as global public goods”. She says:

“China will arrive at future COPs casting itself as the indispensable climate leader for the global south…even though its new five‑year plan still puts growth, energy security and coal ahead of faster emissions cuts at home.”

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What else does the plan cover?

The impact of extreme weather – particularly floods – remains a key concern in the plan.

China must “refine” its climate adaptation framework and “enhance its resilience to climate change, particularly extreme-weather events”, it says.

China also aims to “strengthen construction of a national water network” over the next five years in order to help prevent floods and droughts.

An article published a few days before the plan in the state-run newspaper China Daily noted that, “as global warming intensifies, extreme weather events – including torrential rains, severe convective storms, and typhoons – have become more frequent, widespread and severe”.

The plan also touches on critical minerals used for low-carbon technologies. These will likely remain a geopolitical flashpoint, with China saying it will focus during the next five years on “intensifying” exploration and “establishing” a reserve for critical minerals. This reserve will focus on “scarce” energy minerals and critical minerals, as well as other “advantageous mineral resources”.

Dellatte says that this could mean the “competition in the energy transition will increasingly be about control over mineral supply chains”.

Other low-carbon policies listed in the five-year plan include expanding coverage of China’s mandatory carbon market and further developing its voluntary carbon market.

China will “strengthen monitoring and control” of non-CO2 greenhouse gases, the plan says, as well as implementing projects “targeting methane, nitrous oxide and hydrofluorocarbons” in sectors such as coal mining, agriculture and chemicals.

This will create “capacity” for reducing emissions by 30m tonnes of CO2 equivalent, it adds.

Meanwhile, China will develop rules for carbon footprint accounting and push for internationally recognised accounting standards.

It will enhance reform of power markets over the next five years and improve the trading mechanism for green electricity certificates.

It will also “promote” adoption of low-carbon lifestyles and decarbonisation of transport, as well as working to advance electrification of freight and shipping.

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Q&A: What does China’s 15th ‘five-year plan’ mean for climate change?

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