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China Briefing handpicks and explains the most important climate and energy stories from China over the past fortnight. Subscribe for free here.
Key developments
Floods in the south, drought in the north
EXTREME WEATHER: China has been hit by extreme weather over the past two weeks. About 35% of its corn production was affected by severe drought in north China where some rivers had “dried up a month ago”, reported Reuters. In the south, torrential rain and flooding killed at least 38 people in Guangdong province – China’s most populated – as well as eight people in Hunan province and two in Anhui province. Local newspaper Guangxi Daily reported that this week’s floods in Guilin, capital city of Guangxi province, were the largest in the area since 1998. Chinese president Xi Jinping “has urged all-out efforts to fight floods and droughts, and to ensure solid work in disaster relief”, said state agency Xinhua. Some 33 rivers in China “exceeded warning levels”, according to Xinhua.
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GLOBAL WARNING: Yang Pingjian, director of the environmental sociology department at the Chinese Academy of Environmental Sciences, wrote in China Environment News that “the adverse effects of climate change have become more and more obvious: heavy rainfall, typhoons, hail and other extreme weather occur” in China. The National Climate Center said that China is “experiencing more frequent and intense heatwaves due to global warming”, reported China Daily. The “average onset of high temperatures (those exceeding 35C) has advanced by 2.5 days per decade” and the average heatwave starting date has moved from 24 June in 1981-1990 to 7 June in 2011-2020, the outlet added. New research covered by the Hong Kong-based South China Morning Post found that “widespread heat stress will be felt by most of China’s population by the end of the century due to climate change, with the north of the country expected to be hit hardest”.
SUMMER PRESSURE: These high temperatures may cause peak electricity consumption to grow by more than 100 gigawatts (GW) year-on-year during this summer’s peak period, putting pressure on “ensuring power supply”, China Securities Journal reported. Writing in financial newspaper Caixin, Qin Qi, China analyst at the Centre for Research on Energy and Clean Air (CREA) noted that this expected 100GW increase is “similar to 2022’s growth, which saw power shortages and blackouts”, adding that this “highlighted the need for a more flexible inter-provincial electricity trading mechanism”. She also pointed to the need for flexible grid operations and demand-side measures to help China “effectively manage peak demand pressures without compromising its climate commitments”.
Renewable energy pushed thermal power into decline
THERMAL DECLINE: A surge in solar power and hydropower in China in May led to a 4.3% decline in thermal power – mainly coal – that month, Bloomberg reported, adding that this supported earlier Carbon Brief analysis finding China’s emissions may fall this year. The drop in thermal power was the largest since 2022 and could continue as long as China does not “reprioritise carbon-heavy investment to revive growth”, the outlet added. Hydropower generation rose 38.6% year-on-year in May 2024 and solar by 29.1%, state-run industry newspaper China Energy Net said.
SOLAR CAPACITY: China’s National Energy Administration (NEA) pledged in a press conference to “guide production capacity expansion” and “prevent unnecessary investments” in the country’s solar manufacturing sector, following a call for help from industry participants “grappl[ing] with a surge in capacity”, according to finance newswire Yicai. Economic news outlet Jiemian quoted Li Chuangjun, director of the NEA’s new energy and renewable energy department, saying at the press conference that the industry should “avoid repetitive construction of low-end solar capacity”.
NO OVERCAPACITY?: NEA head Zhang Jianhua said at the same press conference that “whether from the perspective of comparative advantage or of global market demand, China’s new energy industry does not have a so-called ‘overcapacity’ problem”, state-run newspaper Science and Technology Daily reported. Zhang added that “supply moderately exceeding demand is helpful for achieving technological progress and reducing product costs”, and that the solar industry specifically is characterised by a strong private sector, “sufficient” competition and companies “choosing to expand production” due to “optimistic outlooks towards future markets”, according to the newspaper.
EU and China to discuss electric vehicle tariffs
NEW TALKS: After expressing opposition to the EU’s additional tariffs on Chinese electric vehicles (EVs) and announcing an anti-dumping investigation into pork products from the EU, China agreed to a new discussion over the tariffs this week, the Financial Times reported. Bloomberg said the talks “may buy time” for China to “sow enough opposition” between EU member states, as Beijing suggested German luxury automakers “could benefit if Berlin convinces the EU to drop tariffs”.
MIDDLEMAN GERMANY?: Germany’s economy minister Robert Habeck, who visited China last weekend, showed there was an “open attitude of China and some politicians in the EU in seeking dialogue and cooperation amid trade friction”, said a Global Times’ editorial. Habeck said the EU’s tariffs measures were “not a punishment” and its “doors are open for discussions”, Reuters reported. The German Chamber of Commerce in East China, a business advocacy group, also argued that the EU tariffs “cannot offer protection to German carmakers or increase their competitiveness”, SCMP reported. Reuters said that China’s share of Germany’s EV imports rose to 40.9% in the first quarter of this year.
CHINA COMPROMISE?: China’s state-controlled Global Times newspaper wrote “observers said the best outcome the Chinese side wants is that the EC, the executive body of the EU, scrap its tariff decision before 4 July and abide by WTO rules”. Another state-run newspaper China Daily said in an editorial that Beijing is “willing…to try and resolve the reasonable concerns of the EU” and hopes that Brussels will avoid escalating frictions “by meeting China halfway”. In an interview with the Financial Times, Zhu Min, a member of China’s “five-year plan” committee, argued there was no “overcapacity” or “dumping” of cheap EVs on the European market. He said the price of EVs is higher overseas than in the domestic market and that China’s domestic buyer rebate also applied to foreign EV brands, such as Tesla in China, added the outlet.
EU-China climate dialogue and Li’s new commitment
CHINA-EU TALKS: Amid their ongoing tariff dispute, China and the EU held the fifth “high-level environment and climate dialogue” on 18 June, said Xinhua. The Chinese vice premier Ding Xuexiang and the European Commission’s Maroš Šefčovič agreed there were “common interests” and discussed “climate change and protecting the ecological environment”, the state news agency continued. Ding also said the EU’s tariff plan was “typical protectionism” which is “not conducive to the EU’s green transformation”, added the agency. China’s minister of ecology and environment, Huang Runqiu, and the EU’s commissioner for climate action, Wopke Hoekstra, signed “an updated memorandum of understanding to enhance cooperation on emissions trading”, the Chinese International Environment Net reported.
PREMIER’S REMARKS: The Chinese premier Li Qiang announced yesterday that “China is committed to addressing climate change and has been proactively developing green industries such as new energy” at the World Economic Forum’s “summer Davos” meetings in Dalian, China, Xinhua reported. Li said “the green transition itself holds immense potential for development” and that all nations should “create more growth drivers for the green economy”, added Xinhua. Reuters said Li also “hit back” at overcapacity accusations from the US and EU, arguing that China’s production of clean energy technologies “first met our domestic demand, but also enrich[es] global supply”. At a domestic conference, president Xi encouraged technology innovation and said Chinese EVs “add[ed] new momentum to the global automotive industry”, according to Xinhua.
Spotlight
How is China adapting to increasingly frequent flooding?
In recent years, China has seen more frequent floods caused by heavy rains. Dozens of people have died in south China this month due to torrential rain and flooding. In April, floods caused damage worth 12bn yuan ($1.65bn) – “the worst [losses] in 10 years”.
In this issue, Carbon Brief looks at the reasons for China’s recent floods and how the country is trying to adapt. A full version of this article will be published on Carbon Brief’s website.
Rising floods
There are various factors behind the frequent heavy rain and flooding in China in recent years.
In a press briefing covered by China Daily, Zheng Zhihai, chief forecaster at the National Climate Centre of the China Meteorological Administration (CMA), said that “higher than normal temperatures” were behind frequent heavy rainfall in southern provinces since April.
China Daily noted: “This temperature increase has elevated the atmospheric moisture levels, intensified convective processes, and led to more frequent occurrences of heavy rainfall.”
Sea level rise has also been cited as a primary factor behind China’s coastal floods, as it increases the intensity and frequency of storm surges and raises baseline water levels.
The El Niño-Southern Oscillation, a natural climate cycle that entered its warmer El Niño phase in mid 2023, was partly to blame as it raised sea surface temperatures and directed vast amounts of water vapour from the South China Sea and the Bay of Bengal towards southern China, found one analysis.
Dr Faith Chan, head of the School of Geographical Sciences at the University of Nottingham Ningbo China, told Carbon Brief that the rainfall pattern in Guangdong during this April was quite similar to the intensive rainstorm on 6-8 September in 2023 after Typhoon Haikui.
In addition to the natural causes, human activity also played a role. Chan said:
“Of course, the El Niño effect enhanced the wet and low-pressure moist current in the east coast of China and the west Pacific. But human-induced climate change led to the greenhouse effect and caused sea temperature to rise, which caused more storms and low-pressure rain belts. That is a fact.”
Indeed, Prof Yang Chen of the Chinese Academy of Meteorological Sciences told Carbon Brief that human-caused intensification of heavy rainfall over China had been even larger than expected.
Adaptation measures
China has built a number of large water projects to prevent flooding, such as the south-north water transfer projects in the Yangtze river that was launched in 2002.
In the most recent “national water network construction planning outline” published by the State Council – China’s top administrative authority – constructing “national water networks” by 2035 is labelled as the “backbones” of future flood prevention.
China also launched the “sponge city programme (SCP)” in 2015.
Sponge cities cost the government 1.5–1.8bn yuan ($210-250m) between 2015 and 2018. They are designed to collect, purify and re-use at least 70% of the floodwaters through “green-blue facilities”, such as green roofs, permeable pavements and stormwater parks, in urban areas. The overall system was meant to resolve the issues of urban heating, freshwater scarcity and flooding all at once.
But the 2021 floods in Zhengzhou, a showcase sponge city, laid bare the inadequacy of the SCP in the face of climate change.
A paper suggested the SCP, which is designed to withstand one-in-30-year rain events, has limited effectiveness against more intense downpours.
Additionally, SCP can create a false sense of security, which encourages more people to move to high-risk areas, leading to an increase in population and assets in exposed areas that require ever-increasing protection in a cycle referred to as a “levee effect”, said Chen.
Meanwhile, a lack of coordination added another layer of difficulties. Zheng Yan, researcher at China Academy of Social Sciences, noted in the aftermath of the 2023 Beijing flood that government bodies often looked after their own jurisdiction and aimed only to move the problem and divert the floods quickly, which piled pressure on cities in downstream areas.
Looking abroad
As flooding is a challenge faced by cities across the world, there is a plethora of ideas and technologies that China can draw on.
Rotterdam, a Dutch delta city of 600,000 people that is surrounded by water on four sides, has built water storage facilities, such as an underground parking garage with a basin the size of four Olympic swimming pools. It has also installed green roofs and facades to absorb rainwater.
Japan has built an intricate network of concrete tunnels and vaults about 14 storeys beneath the Saitama prefecture in the outskirts of Tokyo, Japan’s capital city, that could hold more than 1,000 Olympic pools of rainwater.
Both cities’ underground flood diversion facilities are often used as a prime example of a viable flood defence system for urban cities on the frontline of climate change.
Hong Kong has a similar underground stormwater storage system beneath the sport pitches of the Happy Valley Racecourse, designed to withstand one-in-50-years flood events.
Chan said it is difficult to compare flood mitigation measures as each city is very different in terms of geography, demographic, densities and topography.
Nevertheless, he told Carbon Brief:
“In my opinion, China’s megacities should think about using underground spaces to store the sudden extreme discharge from super intensive rainstorms…Tokyo and Rotterdam are quite wise in that regard for using their underground spaces.”
This Spotlight is written by freelance climate journalist Jia Ning Tan for Carbon Brief.
Watch, read, listen
CHINA IN SPACE: The Economist’s “The Intelligence” podcast aired an episode about China becoming a “superpower” in the physical sciences.
RUSSIA-CHINA PIPELINE: A Financial Times podcast said Russia and China are “deadlocked” over a gas pipeline deal.
FARMING LAND: The Chinese communist party’s magazine Qiu Shi published an article by Hunan province’s communist theory study group on protecting arable land and the “political responsibilities” related to it.
CARBON FOOTPRINT: Finance outlet Southern Finance Omnimedia’s social media account 21 Low Carbon published an explanation of China’s new “national unified carbon footprint management system”.
$940m
The total value of an international “sustainability bond” issued by the Bank of China for investment in “renewable energy, sustainable water resources and wastewater management infrastructure projects” in the countries that joined China’s Belt and Road Initiatives (BRI). (The total value of loans for BRI countries reached $87bn in 2016 and $3.7bn in 2021.)
New science
Climate Policy
China and the US – two of the world’s biggest methane emitters – should make their methane policies more “climate-centric”, according to a new study. Existing policies relating to methane are concentrated in the energy sector and are “largely driven” by safety, pollution concerns and use of resources, rather than reducing greenhouse gas emissions, the study said. The researchers suggested that both countries should focus on methane mitigation and “consider more climate-centric policies”.
Energy Policy
The Chinese government has employed economic incentives to offset the financial impact of the clean energy transition, but “these measures may not fully address the underlying issue of climate apathy, wherein individuals prioritise immediate interests over long-term climate concerns”, a new study said. Surveying 4,700 Chinese adults each year for three years, the study found that those on low incomes were less likely to support climate policy, with “climate apathy” explaining a much larger share of this effect – some 38% – than “economic burden”, which only explained 8% of the effect on policy support. The authors concluded: “Addressing climate apathy is a cost-effective strategy to boost policy support.”
Investigating the impact of weather on stroke in summer
International Journal of Biometeorology
A new study collected data of stroke hospitalisation in the city of Tianjin, China, from 2016 to summer 2022. The study found a direct link between temperature extremes and hospitalisation: “83% of the Inpatient-heavy events within the study period were caused by a combination of dramatic temperature changes and continuous high temperatures.” The authors concluded: “More attention should be paid to the combined effects of continuous high temperature and sudden temperature changes in summer stroke prevention.”
China Briefing is compiled by Wanyuan Song and Anika Patel. It is edited by Wanyuan Song and Dr Simon Evans. Please send tips and feedback to china@carbonbrief.org
The post China Briefing 27 June 2024: Extreme weather; New talks on EV tariffs; Coal power decline appeared first on Carbon Brief.
China Briefing 27 June 2024: Extreme weather; New talks on EV tariffs; Coal power decline
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.
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.
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.”
