Welcome to Carbon Brief’s DeBriefed.
An essential guide to the week’s key developments relating to climate change.
This week
US ‘180-degree pivot’
‘SIDE EFFECT’: US energy secretary Chris Wright promised a “180-degree pivot” on climate policy while speaking in front of oil and gas executives, the New York Times reported. Addressing an industry conference in Houston, he said there was a “moral case for fossil fuels” to alleviate poverty and was dismissive of renewables, the newspaper added. CNBC reported that Wright also said: “The Trump administration will treat climate change for what it is – a global physical phenomenon that is a side effect of building the modern world.”
MORE CUTS: The US Environmental Protection Agency (EPA) terminated $20bn in grants for climate projects, awarded through a “green bank” known as the Greenhouse Gas Reduction Fund, Bloomberg reported. However, Inside Climate News said that a federal judge has “sharply criticised the agency for canceling the grants without presenting any evidence of wrongdoing, calling the administration’s justification weak and unsubstantiated”. It added: “The judge stopped short of issuing a ruling on reinstatement of the funds, leaving grant recipients in limbo.”
NASA CHANGES: NASA has dismissed its chief scientist, climate-science expert Katherine Calvin, along with 20 others as part of changes imposed by the Trump administration, says the New York Times. The newspaper also added the government “could be considering slashing the budget for NASA’s science activities by half”.
Road to COP30
COP30 HIGHWAY: Eight miles of “Amazon rainforest” are being cleared to build a four-lane highway ahead of the COP30 climate talks in Belém later this year, said the Times. BBC News, which broke the story, added the road is designed to ease traffic in the Brazilian city. However, the Brazilian government responded to say the media stories were “misleading” because the road was planned before COP30 was announced.
CLIMATE MULTILATERALISM: Meanwhile, the Times of India reported that, in the wake of the US withdrawal from the Paris Agreement, the Brazilian COP30 presidency has invited the hosts of all the UN climate summits since COP21 in Paris to form a “circle of presidencies” to enhance multilateral efforts to tackle climate change.
Carney for Canada
OH, CANADA: Mark Carney was elected leader of the Liberal party in Canada and will replace Justin Trudeau as prime minister, reported the Globe and Mail. CNN noted that the former governor of the banks of England and Canada has “advocated for the financial sector to invest in net-zero” and held the position of UN special envoy for climate action and finance in 2019.
BANKING ROLLBACKS: Meanwhile, the Financial Times reported that the Net-Zero Banking Alliance – the “top global climate alliance for banks” founded by Carney – will ask its members to vote on abandoning a pledge to align their $54tn in assets with the Paris Agreement aim of limiting global warming to 1.5C. There has been an “exodus of many leading US banks” since Trump’s second term, but major players such as HSBC and Barclays remain in the alliance, the newspaper said.
Around the world
- FLASH FLOODS: Agence France-Presse reported that a flash flood in Bahía Blanca, Argentina has killed at least 16 people and caused $400m in damages.
- ENERGY BILLS: A UK bill introduced to parliament this week sought to speed up approval of clean-energy projects and reduce energy bills by £250 a year for people living near new or upgraded pylons, BBC News reported.
- TWO SESSIONS: China’s influential “two-sessions” political meetings ended on Tuesday, with new climate commitments, Carbon Brief reported.
- FEWER EMISSIONS: Emissions in Germany fell 3.4% in 2024, noted Reuters, adding that it puts the country “on track” to meet its 2030 climate targets.
3.6%
The amount that the UK’s emissions fell by in 2024, seeing emissions reach their lowest level since 1872, according to a new analysis by Carbon Brief.
Latest climate research
- A study in Public Understanding of Science, co-authored by Carbon Brief’s Josh Gabbatiss, found that UK newspapers increased their support for climate action from 2011-21, but also featured “multiple discourses of delay”.
- New analysis from the World Weather Attribution group concluded that human-caused climate change increased recent heavy rainfall in Botswana by 60%.
- A study in PLOS Climate found smallholder farmers in rural northeast Madagascar witnessed increases in temperature and decreases in rainfall over a five-year period and are concerned about the effects of climate change on their livelihoods.
(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 analysis by Carbon Brief revealed that nearly a tenth of global climate finance could be under threat, as Trump continues to cut spending on international aid. Since taking office in January, Trump has pulled the US out of multiple international climate funds and initiatives, including plans withdrawing the US from the Paris Agreement. He has also threatened to cancel virtually all US Agency for International Development (USAid) projects, with climate funds identified as a prime target. These actions are likely to endanger global efforts to help developing countries tackle climate change.
Spotlight
Myanmar’s energy crisis
This week, Carbon Brief looks at energy challenges in Myanmar and whether solar power could help to provide a solution.
Earlier this year, military rulers in Myanmar slashed power supplies for two of the country’s major cities – the capital, Naypyidaw, and Yangon. The order said that Yangon, the country’s largest city, would only receive eight hours of electricity per day on a rotating power schedule.
However, the reality on the ground is more severe. The capital of Naypyidaw appears to have been prioritised, with 16 hours of power on and eight hours off, while residents in Yangon report sometimes only receiving two hours of electricity per day. Other parts of the country have also been affected.
‘In the dark’
Rolling blackouts in Myanmar are not new. Back in 2019, the country experienced widespread energy shortages due to a widening power supply-demand gap.
However, Myanmar’s power-sector challenges have grown since the country’s military coup in February 2021.
The national power grid has been attacked and damaged due to armed conflict resisting the coup. A Frontier Myanmar article from 2023 reported that there had been 229 attacks on electricity infrastructure since the 2021 coup, which the military blamed on rebel groups.
A loss of foreign investment, economic turmoil and mismanagement have also all contributed to Myanmar’s energy crisis, said Richard Harrison, former CEO of Smart Power Myanmar, an NGO aimed at providing solar power to small businesses. He told Carbon Brief:
“Governments and donors no longer have direct relations with the national government and most NGOs are badly underfunded. There is almost no energy-related funding in Myanmar.”
Slowing solar
The country’s electricity mix currently mostly consists of gas and hydropower.
Before the coup, multiple projects, including solar farms, had been planned to help reduce the growing power supply-demand and increase electrification rates.
According to a report by the World Bank, a “major solar tender was launched in May 2020 for 30 solar power plants to be constructed throughout the country”. But “only one of those was completed since the military takeover in 2021 and the other 29 were cancelled”, the report said.
Myanmar has also experienced shortages of gas for power generation, compounded by investor exits and the decline of Myanmar’s largest gas field.
The Irrawaddy, a Myanmar-focused news site in Thailand, reported that military leaders have called for solar panels to be installed on all new buildings in a bid to solve Myanmar’s energy crisis. However, it is worth noting that, according to the Irrawaddy, the junta leader’s son has “won licenses to sell solar panels and equipment while the regime has granted tax exemptions on solar imports”.
Yet, the Irrawaddy has also noted that the cost of solar is “beyond the reach of many small businesses, which form the backbone of Myanmar’s economy”.
Not-for-profits have continued to build solar projects in the country since the coup, aimed at supporting local businesses and powering rural healthcare facilities.
However, the situation is volatile as the civil war drags on, Harrison noted:
“The outlook is bleak. Myanmar has failed to invest in new generation capacity and current sources of energy (gas) are declining or curtailed. This means that, even if conflict were to end, we will continue to see declining energy access and major shortages through 2030. In other words, Myanmar’s energy crisis is almost guaranteed to get worse and be protracted.”
Watch, read, listen
REMOVING CARBON: The Solving for Climate podcast spoke to Carbon Brief climate science contributor Dr Zeke Hausfather about whether the use of carbon removal technologies should expand.
BLACKOUTS: Dialogue Earth reported on how extreme weather events exacerbated by climate change are causing more frequent power outages in Latin America.
SABOTAGE TACTICS: A feature in the Guardian said “tougher laws” are said to be “inspiring clandestine attacks [by climate protesters] on the ‘property and machinery’ of the fossil fuel economy”.
Coming up
- 16-20 March: Applied Power Electronics Conference (APEC), Atlanta, Georgia
- 17-18 March: First part of the 30th annual session of the International Seabed Authority, Kingston, Jamaica
- 21 March:UN observed International Day of Forests
Pick of the jobs
- Stockholm Environment Institute , climate project intern | Salary: Unknown. Location: Tallinn, Estonia (onsite, hybrid or remote)
- Doughnut Economics Action Lab , junior communications freelancer | Salary: £250 a day. Location: Remote (UK hours)
- EarthRights International, policy advisor | Salary: $85,000-$95,000. Location: Remote (US)
- Birmingham and Black Country Wildlife Trust, conservation officer | Salary: £24,570. Location: Flexible
- British Antarctic Survey, field coordinator – Antarctica | Salary: £29,273 to £30,201. Location: Antarctica
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 14 March 2025: US’s ‘moral case for fossil fuels’; Rainforest felled for ‘COP30 road’; Myanmar’s energy crisis appeared first on Carbon Brief.
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.
Heatwaves driving recent ‘surge’ in compound drought and heat extremes
Greenhouse Gases
DeBriefed 6 March 2026: Iran energy crisis | China climate plan | Bristol’s ‘pioneering’ wind turbine
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 t