Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
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This week
Unprecedented heat
‘RED ALERT’: The UN’s World Meteorological Organization (WMO) issued a “red alert” on climate change, after 2023 saw record heat, ice-melt and greenhouse gas emissions, the Associated Press reported. The WMO’s report confirmed that 2023 was the hottest year on record, with the average global temperature reaching 1.45C, noted the Guardian. The world is getting ever closer to temporarily breaching 1.5C, the ambition set under the Paris Agreement, the Independent said.
IMPACTS REVEALED: According to the WMO, extreme weather events are having an “alarming” impact on food insecurity, the Financial Times reported. The FT said there were 333 million people in 2023 who were “acutely food insecure”, compared to 149 million people before the Covid-19 pandemic. Elsewhere, Al Jazeera reported that “over 90% of ocean waters experienced heatwave conditions at least once” in 2023.
SCIENTISTS STUNNED: Reacting to the report, Prof Jonathan Bamber, a glaciologist at the University of Bristol, told the i newspaper: “The pace of climate breakdown that we’re witnessing is faster than I think the vast majority of climate scientists were anticipating five or 10 years ago. Things are changing so rapidly that myself and quite a few of my colleagues do have concerns that some of our estimates could be on the conservative side.” It comes as leading climate scientist Dr Gavin Schmidt published a piece in Nature saying that researchers are finding 2023’s extremes “hard to explain” and that Earth could be entering “uncharted territory”.
Big Oil backtracks
TEXAS HOLD ‘EM: As Earth continues to face record-breaking extremes, executives from the world’s leading oil-and-gas companies gathered this week to “pour scorn” on efforts to move away from fossil fuels, reported the Guardian. According to the newspaper, Amin Nasser, the chief executive of state firm Saudi Aramco, told the industry’s annual Cera Week summit in Texas: “We should abandon the fantasy of phasing out oil and gas and instead invest in them adequately.”
BUSINESS AS USUAL: Also reporting on the summit, Reuters noted that many oil-and-gas CEOs shared Nasser’s views, adding: “Shell’s Wael Sawan point[ed] to government bureaucracy in Europe as slowing needed development. Petrobras CEO Jean Paul Prates said caution should overrule haste. Exxon Mobil CEO Darren Woods also said regulations governing clean fuels have still not been resolved.” It came as the Guardian covered a new report from Global Witness suggesting that emissions connected to top oil and gas firms could cause 11.5 million additional heat deaths by 2100.
Around the world
- CLIMATE MINISTERIAL: At a climate ministerial in Copenhagen, a “troika” made up of the United Arab Emirates, Azerbaijan and Brazil – the hosts of COP28, COP29 and COP30, respectively – urged countries to update their international emissions pledges by 2025, the Hindustan Times reported.
- SCHOOL CLOSURES: South Sudan has closed all its schools for an expected two weeks as temperatures are forecast to reach 45C, BBC News reported. It comes as Carbon Brief covered a new attribution analysis finding climate change made recent heat in west Africa 10 times more likely.
- US TRANSPORT: The Biden administration announced new rules to tackle pollution from the nation’s cars and light trucks, “imposing tailpipe emission limits so stringent they will compel automakers to rapidly boost sales of battery-electric and plug-in hybrid models”, Bloomberg reported.
- UK COURTS: The UK Court of Appeal has ruled that climate activists prosecuted in England and Wales for criminal damage can no longer use the “consent defence” – that they believe the property owner would have given their consent to the action if they understood the reason for the protest – the Financial Times reported.
- GREEN STEEL: A new report found that China is “falling short” in decarbonising its steel sector, due to “slowing demand, low recycling rates and lingering overcapacity concerns” impeding the transition to lower-emission production, said Reuters.
- BRAZIL HEATWAVE: Following a record “heat index” (which factors in the impact of humidity) of up to 62C in the Brazilian capital Rio de Janeiro last weekend, O Globo reported that heatwaves may become more frequent in the country.
13 million
The number of residents in India’s southern tech capital of Bengaluru who are running out of groundwater following an “unusually hot” February and March, the Associated Press reported.
Latest climate research
- Over the past 60 years, livestock grazing has reduced soil carbon stocks by 46bn tonnes of carbon at a depth of one metre, a study in Nature Climate Change found.
- Research in Nature Cities found that only 43% of 793 cities studied have implemented green recovery plans in response to the Covid-19 pandemic.
- A study in Climatic Change gathered the opinions of 20 policymakers and practitioners from different countries about the readability of figures drafted for the latest Intergovernmental Panel on Climate Change (IPCC) report on how to tackle climate change. It recommended ways that the figures could be improved, based on the feedback.
(For more, see Carbon Brief’s in-depth daily summaries of the top climate news stories on Monday, Tuesday, Wednesday, Thursday and Friday.)
Captured
New Carbon Brief analysis debunked 18 of the most common and persistent myths about heat pumps. Heat pumps can significantly cut greenhouse gas emissions (see chart above) and are the “central technology in the global transition to secure and sustainable heating”, according to the International Energy Agency. Yet, in major economies such as the UK and Germany, heat pumps are the subject of hostile and misleading reporting across many mainstream media outlets, according to Carbon Brief’s new factcheck.
Spotlight
Rare-earth mining in Myanmar
This week, Carbon Brief interviews an expert about how rare-earth mining in Myanmar has increased since the country’s military coup in 2021, its impacts on local communities and the environment, plus how it can be better monitored and controlled.
Myanmar is rich in natural resources. It is home to a wealth of gemstones, energy sources, such as coal and uranium, as well as vast amounts of rare earths.
Dysprosium and terbium are two rare earths that are heavily mined in Myanmar. They are used in a range of everyday technologies, such as light bulbs, but are increasingly being used for renewable energy, including for electric vehicles and wind turbines.
As countries race to achieve their climate targets, demand for these rare earths is substantially increasing. The Irrawaddy reported that Myanmar exported more than 140,000 tonnes of rare-earth deposits to China between May 2017 and October 2021, valued at more than $1bn.
However, much of Myanmar’s mining industry is illicit and controlled by armed groups. Illegal mining has grown since the country’s military coup in 2021, particularly along the Chinese border in Kachin State.
China, the world’s biggest low-carbon technology producer and the largest processor of rare earths, is now increasingly outsourcing its mining activities into neighbouring Myanmar amid growing national concerns over the highly polluting process.
Below, Carbon Brief speaks to Vicky Bowman (pictured above), director of the not-for-profit Myanmar Centre for Responsible Business, about escalating issues with rare-earth mining in the country. The interview has been edited for clarity and length.
Carbon Brief: Please can you give an overview of rare-earth mining in Myanmar and how it has developed since the military coup in 2021?
Vicky Bowman: Rare-earth mining has been taking place in Kachin state, north-eastern Myanmar, on China’s border for around a decade, mainly by Chinese miners in areas under the control of the pro-military Kachin militias. Chinese companies started to source more from Kachin state because of a clampdown on rare-earth mining in Yunnan due to environmental pollution.
Satellite footage commissioned by Global Witness showed that rare-earth mining has significantly expanded since the coup. It also takes place to a lesser extent in areas controlled by the Kachin Independence Organisation (KIO), which is opposed to the Myanmar military. The KIO planned to expand rare-earth mining to raise funds for their armed struggle, but they faced significant local backlash and dropped the expansion plans in 2023.
CB: What impacts is rare-earth mining having on people, particularly Indigenous peoples, and the environment in Myanmar?
VB: Indigenous peoples in the areas where rare-earth mining is taking place in Kachin state, mostly Kachin ethnic minority, rely on agriculture and forests for their livelihood and culture. These areas are also rich in biodiversity. The leaching process for extracting rare-earth ores requires leaching it from the soil using ammonia and other chemicals. These chemicals enter the environment and poison the streams and fields, killing trees, cattle and local nature and making local people sick.
CB: What needs to happen to better monitor and control the impacts of rare-earth mining in Myanmar?
VB: The vast majority of mining in Myanmar nowadays is unplanned, unregulated and unlicensed. The national Mining Law is not fit for purpose. It fails to align with other laws, such as those concerning investment, environmental protection and land use. There are few, if any, officials in any of the ministries who understand how to regulate mining. Corruption is rife. If and when Myanmar’s political crisis is resolved, the policy and legal framework for mining needs to be completely overhauled into a federal system, which can ensure effective land-use planning and environmental protection, and transparent tax revenues for central and sub-national governments and local communities.
Indeed, creating an effective framework for responsible mining is central to resolving conflicts between local people and the central government, and should be a priority for anyone working on peace.
Watch, read, listen
WHEN HEAT KILLS: A new documentary by Deutsche Welle investigated the effects of extreme heat on human health, particularly for outdoor workers, as the climate warms.
CLIMATE OF FEAR: Atmospheric scientist Prof Adam Sobel unpacked coping with the daunting uncertainties of climate change in an article in Nature.
RIGHTS FOR NATURE?: The latest episode of the Guardian’s Science Weekly podcast explored the contested concept of whether nature should have rights.
Coming up
- 18-29 March: First part of the 29th annual session of the International Seabed Authority, Kingston, Jamaica
- 23 March: UN observed World Meteorological Day
- 24 March: Senegalese presidential election
- 26 March: IEA-Power Africa – Data-driven electrification in Africa webinar, remote
Pick of the jobs
- Science Media Centre, internship | Salary: London Living Wage (£13.15 an hour). Location: London
- Climate Analytics, head of climate science and impacts team | Salary: Unknown. Location: Berlin, Germany
- British Antarctic Survey, glacial sedimentologist | Salary: £39,375-£43,313. Location: Cambridge, UK
- Work On Climate, founders programme manager | Salary: $70,000-90,000. Location: Remote, US
- European Energy Research Alliance, clean energy transition expert | Salary: Unknown. Location: Brussels, Belgium
DeBriefed is edited by Daisy Dunne. Please send any tips or feedback to debriefed@carbonbrief.org
The post DeBriefed 22 March 2024: ‘Red alert’ for Earth; Heat-pump myths factchecked; Myanmar’s rare-earth mining crisis appeared first on Carbon Brief.
American farmers are drowning in health insurance costs, while their German counterparts never worry about medical bills. The difference may help determine which country’s small farms are better prepared for a changing climate.
Samantha Kemnah looked out the foggy window of her home in New Berlin, New York, at the 150-acre dairy farm she and her husband, Chris, bought last year. This winter, an unprecedented cold front brought snowstorms and ice to the region.
On the Farm, the Hidden Climate Cost of the Broken U.S. Health Care System
Climate Change
A Little-Used Maneuver Could Mean More Drilling and Mining in Southern Utah’s Redrock Country
Two Utah Congress members have introduced a resolution that could end protections for Grand Staircase-Escalante National Monument. Conservation groups worry similar maneuvers on other federal lands will follow.
Lawmakers from Utah have commandeered an obscure law to unravel protections for the Grand Staircase-Escalante National Monument, potentially delivering on a Trump administration goal of undoing protections for public conservation lands across the country.
A Little-Used Maneuver Could Mean More Drilling and Mining in Southern Utah’s Redrock Country
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.”
The post Heatwaves driving recent ‘surge’ in compound drought and heat extremes appeared first on Carbon Brief.
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