尽管中国电力需求快速增长,但清洁能源发电的增长首次使该国的二氧化碳(CO2)排放量出现下降。
Carbon Brief的最新分析显示,2025年第一季度,中国的碳排放量同比下降了1.6%,过去12个月则下降了1%。
新增风电、太阳能和核电的装机容量所带来的出力,足以应对电力需求激增,从而削减燃煤发电量;而此前的排放下降则主要被归因于经济增长放缓。
这项基于官方数据和商业数据的分析显示,中国的碳排放量一年多来一直保持稳定或下降。
不过,该排放量仅比最近的峰值低1%,这意味着只要出现短期反弹,中国的碳排放就可能创下新高。
其他主要发现包括:
- 清洁能源发电增长速度已经超过当前及长期电力需求增长平均值,从而压低了化石燃料的使用量。
- 截至2025年3月的12个月内,电力行业的碳排放同比下降了2%。
- 若这一趋势得以保持,意味着中国电力行业排放可能已达峰并开始持续下降。
- 美国总统特朗普发动的“贸易战”促使中国更加努力将经济重心从出口转向内需。
- 新出台的可再生能源电价政策催生了“抢装潮”,企业争相在政策实施前完成项目建设。
- 如果中国要实现在《巴黎协定》下承诺的2030年排放目标,仍面临日益扩大的差距需要弥补。

如果这种因清洁能源增长而带来的电力行业碳排放下降趋势得以延续,可能预示着Carbon Brief此前在分析中预测的结构性排放下降的开始。
电力行业碳排放下降的趋势很可能在2025年继续。
然而,未来的走势在很大程度上将取决于中国即将于明年公布的下一份五年规划中所设定的清洁能源与减排目标,以及中国对特朗普政府敌对贸易政策的应对策略。
中国碳排放因清洁能源而下降
过去十年来,尽管中国化石燃料和水泥行业的碳排放量有高低起伏,但总体上升了20%。
最新数据显示,该排放量可能已经接近达峰以及趋稳,甚至正步入结构性下降的阶段。
截至2025年第一季度的最新数据显示,中国的碳排放量已经连续一年多呈现稳定或下降趋势,如下图所示。
不过,由于该排放量仅比最近的峰值低1%,这意味着其仍有可能在短期内反弹并创下新高。

因此,中国未来的碳排放走向尚未确定,这取决于各经济部门的趋势,以及中国对特朗普关税政策的应对方式。
电力行业排放下降,其它行业却现反弹
2025年第一季度中国碳排放的下降主要源于电力行业排放下降了5.8%。尽管整体电力需求增长了2.5%,但火电(主要是燃煤和燃气发电)却减少了4.7%。
由于大量新建风电、太阳能和核电装机投入运行,发电量的增长足以弥补需求的增长。水电发电量也有所上升,虽然其受季节因素影响,但同样对化石能源的替代发挥了作用。
电力行业碳排放降幅超过化石能源发电量降幅,因为生物质和天然气的占比上升,同时燃煤电厂的平均能效也有所提升。
具体而言,燃煤电厂度电煤耗平均下降了0.9%。
下图底部显示了第一季度电力行业煤炭使用造成的碳排放量减少情况,该数据低于其他行业的碳排放量变化。

而在电力行业之外,碳排放量增长了3.5%,其中以金属和化工行业的煤炭使用增幅最大。
煤制化工产业正在快速扩张,背后的推动力包括对进口油气依赖的担忧。2025年第一季度,由于煤价走低而油价偏高,该产业的经济性更具吸引力。
粗钢产量同比增长了0.6%,金属制品增长6%,有色金属产量增长2%。这些增长主要集中在3月份,企业赶在关税生效前集中出口,带动金属需求激增,而高产出一直持续到4月。
房地产开工量同比下降24%,新房销售下降3%,反映出建筑行业对水泥、钢材和玻璃的需求持续疲软。
相比之下,汽车和机械制造的经济产出分别增长了12%和13%,表明对金属的需求正在上升。
水泥产量同比下降1.4%,降幅低于往年,可能是由于气温偏高使得依赖天气的施工活动提前启动。
由于燃气发电装机容量增长14%,尽管燃气发电的平均利用率下降,但电力行业的天然气消费量估计增长了6%。但在其他行业,天然气消费减少,总体上抵消了电力行业天然气需求量的增长。
石油制品消费略有上升,如图中最上方所示。由于天气偏暖,依赖天气的施工和农业活动与往年相比提前开工。
然而,从结构性角度来看,汽车电动化和货运行业改用液化天然气,预示着石油需求将持续走低。
中国是否已经碳达峰?
在2025年第一季度排放量同比下降1.6%之际,中国的碳排放自2024年3月以来已连续一年多保持平稳或下降态势。
然而,截至2025年3月底的12个月内,排放量仅比近期峰值下降了1%,这意味着只要出现短期反弹,排放量就可能再创新高。
继一季度大幅下降后,电力行业过去12个月的排放量同比也出现下滑。
在过去40年里,这种情况曾经发生过四次——分别是在2009年、2012年、2015年和2022年。但此次下降首次主要得益于清洁能源发电的增长。

2025年一季度清洁能源发电增速不仅超过整体用电需求增长,也高于过去15年电力需求的平均增长,如上图虚线所示。
此外,过去六个月水电发电量同比保持稳定,这意味着这轮清洁能源的增长是由太阳能、风能和核电装机容量的增长所推动的,而非水电的逐年波动所致。
除发电行业外,2024年12月到2025年3月期间,各行业碳排放均有所下降,但煤化工是个例外。
要使中国整体碳排放量达峰并开始下降,各下降行业的减排总量需超过仍在增长行业的排放增量。

电力和化工以外的煤炭使用量与水泥行业同时达峰,但此后一直在反弹,目前已接近之前的峰值水平。
中国煤炭工业协会预计,钢铁和建材行业的煤炭使用量将下降,而化工行业的煤炭消费量将继续增长。
对煤炭未来需求增长的预期主要集中在化工行业,这也代表着煤炭从单纯的燃料向燃料和原料双重角色的转变。
该协会还认为,燃煤发电将至少在短期内恢复增长,但他们已将2025年的预测下调,与2024年底的展望相比有所保守。
“关税战”可能影响了预期。有分析指出,如果中国GDP因关税下降0.5到1个百分点,可能导致主要用于发电站的燃煤需求也出现类似的下降。
疫情后经济反弹到2024年3月结束,石油产品的消费量自此下降,较峰值减少了2%。尽管化工和航空领域的需求在上升,但由于交通运输领域电气化趋势增强,预计其长期仍呈下降趋势。
天然气的使用量近几个月有所下降,但总体趋势仍可能保持上升。
下表列出了每个行业在12 个月周期内的最高排放量,以及自最新峰值以来的减排量。

除了水泥生产之外,其他行业目前还不能明确判断是否已达排放峰值。然而,有迹象表明,其他行业的峰值也可能已经过去。
诚然,对于石油产品消费和钢铁生产而言,行业预测表明未来排放趋势可能会下降。
对于电力行业而言,只要新增清洁能源装机容量维持在当前或更高水平,就有望带来结构性的排放峰值——因为清洁能源的增长足以覆盖新增的电力需求。
这些行业碳排放量合计占全国八成以上。若这些行业均进入结构性下降阶段,那么中国碳排放总量很可能将开启持续下降通道。
中国推动内需应对美国关税
特朗普政府实施的史无前例的贸易关税政策,以及中国的反制措施,将影响今年及未来中国的经济和碳排放前景。
关税措施实施后,首当其冲的是中国沿海出口大省的工厂减产,从而导致排放下降,同时也可能波及投资和消费支出。
但因双方随后达成90天休战协议,反而刺激美国订单短期内激增,以弥补短暂的贸易放缓,并在休战结束前囤积商品。
中国对关税的反应主要集中在通过刺激措施抵消其经济影响。
虽然暂时的休战会降低出台刺激政策的紧迫性,但当前美国对中国的平均关税税率仍高达40%,远高于特朗普上台前的水平,因此中国领导层也很可能在为未来再次加征关税做好准备。
中国的重点将是为那些原本出口至美国的产品开拓国内市场。这一转向或将助力中国实现长期以来所希望推动的经济向消费驱动型增长转型,而成功实现经济再平衡,有望带来更低能耗的经济增长。
中国的应对措施还包括加大对“新质生产力”的重视,该概念强调新兴科技的发展。
这一概念涵盖了清洁能源产业,该产业如今已成为中国经济的重要引擎,因此难以在刺激计划中被忽视。
中国发改委最新公布的低碳示范项目清单,明确了清洁能源投资的重点方向。绿氢、储能、“虚拟电厂”以及基于氢能的工业脱碳是新的增长领域。
从碳排放角度来看,中国对特朗普关税的反应最关键的问题在于:针对这些优先领域(包括新兴的低碳领域及其他清洁能源产业)的刺激措施,是否足够有力。
新风光电价政策加剧不确定性
中国碳排放面临的另一个不确定性来源,是即将于今年6月生效的新可再生能源电力电价政策。
新政策取消了与煤电价格挂钩的价格保障机制,要求新的风电和太阳能发电项目与购电方直接签订电力合同。这可能导致新建风电和太阳能发电项目的售电价格下降。
不过,政策也为满足中央政府能源目标所需的新增装机容量提供了更有利的价格机制——“差价结算”。
该政策的直接影响可能是大量项目争相在6月前完成投产,以确保能够按现行政策享有机制电价。
其效果已经体现在最新数据中:仅 3 月份中国就增加了 23 吉瓦 (GW) 的太阳能和13GW的风能,比该月之前的新增太阳能和新增风能的最高记录高出80%和110%。
下图根据不同的预测显示,预计2025年和2026年新增清洁能源发电量仍将高于去年创纪录的水平。

然而,这一政策也带来了更大的不确定性。一些行业,尤其是分布式光伏,将经历上半年装机量的激增而下半年放缓的艰难时期。
不确定性主要集中在两个方面。首先是地方如何执行这一政策,因为省级政府拥有相当大的回旋余地。考虑到清洁能源对许多省份经济的重要性,预计地方政府会力求以尽量不扰乱行业的方式来落实政策。
第二个不确定性来自中央政府的能源目标。新电价政策将更优惠的价格与中央政府的能源目标挂钩。而在过去几年中,清洁能源增长远远超过了官方设定的目标。
这凸显了即将出台的“十四五”规划中能源目标的关键作用。国家能源局设定的目标是“年均新增2亿千瓦(200吉瓦)以上新能源的合理消纳利用”,这一数字远低于去年实际新增的360吉瓦。
当然,电价政策的最终效果也取决于市场环境。当前中国煤电项目仍在快速上马,存在产能过剩风险。
中国与巴黎承诺之间的差距扩大
中国风电光伏发展面临的不确定性,也对该国履行《巴黎协定》下的国际气候承诺带来影响。
2020-2023年碳强度(即单位经济产出的排放量)下降进度明显滞后,中国已经明显偏离实现其2030年碳强度承诺的路径,几乎可以肯定将无法实现2025年的阶段性目标。2024年中国的碳强度下降了3.4%,未达到实现2025年和2030年目标所需的改善速度。
2025年政府工作计划中并未设定碳强度目标,仅包含单位国内生产总值能耗降幅超过3%(不包括原材料消耗)的目标。
这可以间接反映碳强度的改善幅度。2024年,中国的碳强度下降了3.4%,而化石能源使用强度下降了3.8%。如果2025年两者之间的比例相似,那么碳强度可能只能下降大约2.5%。在这种情况下,如果GDP增长达到5%的目标,碳排放量仍可能上升超过2%。
政府工作计划中没有设定碳强度目标,也没有特别强调碳强度的下降,显示出当局当前并未将实现这一目标作为优先事项。
政府工作报告中强调了“双碳”目标,即在2030年前实现碳达峰、2060年前实现碳中和。
然而,按照这些目标,2030年前碳排放仍可继续增长。这意味着到该年度,绝对排放量可能在2024年的水平上大幅增加。因此,即便“双碳”目标得以实现,也不能确保中国当前最核心的国际气候承诺——2030年碳强度目标——能够兑现。
即便今年碳排放有所下降,未来五年也需要大幅加快碳强度改善步伐,才能兑现中国2030年《巴黎协定》承诺。
如果中国仍然致力于兑现2030年承诺,那么该过程就需要体现在下一个五年规划设定的目标中。
2025年及未来展望
过去12个月可能标志着中国二氧化碳排放的一个重要转折点:清洁能源的增长首次超过电力需求增长,并在电力领域取代了化石燃料的使用。
尽管新的电价政策带来了一定的不确定性,但预计2025年仍将迎来创纪录的清洁能源新增装机容量,这表明这种趋势将在今年持续。
中国碳排放的未来长期走势将在很大程度上取决于即将出台的五年规划中设定的目标,以及北京应对美国关税和其他经济压力所采取的政策。
从短期看,美国加征关税将抑制能源需求增长和排放水平。为抵消特朗普关税影响而制定的经济政策,很可能会进一步推动清洁能源产业的发展,并可能促使经济重心转向国内消费,这意味着能源消费的增长将相对于GDP增长更少。
但另一方面,中国此前的经济刺激措施往往伴随着排放的急剧上升。中国若想转向消费和新技术驱动的刺激政策,而非高碳排的基建重工业,就必须突破传统发展模式。
电力行业的排放是否已经达峰,将取决于清洁能源供应增长与总体电力需求增长之间的竞赛。
按行业来看,除了电力行业,建筑材料、钢铁以及石油制品消费等领域的排放也可能已经达峰。
这些行业合计占中国与化石燃料相关碳排放的80%以上。然而,在所有这些行业中,都存在短期反弹的可能和不确定性。
目前仍有较大排放增长潜力的行业是煤化工。美国加征关税后国际油价的下跌将削弱该行业的盈利能力,可能导致即便新增产能增加,其工厂利用率也将下降。中国对自美国进口石化产品征收的报复性关税本可能本可能使煤化工行业受益,但这些关税据报已被豁免。
总体而言,这些因素可能推动中国未来五年排放持续下降,并有望在未来五年内实现大幅绝对减排。
然而,若政策出现转向,也同样可能导致碳排放在通往2030年的过程中继续上升。
The post 分析:清洁能源首次助力中国碳排放下降 appeared first on Carbon Brief.
https://www.carbonbrief.org/translations-analysis-clean-energy-just-put-chinas-co2-emissions-into-reverse-for-first-time/
Climate Change
Despite African walkout, fractious land COP ends without drought deal
The African continent’s hopes for a legally binding agreement to combat drought have been dashed again, as UN land restoration talks in Mongolia passed the issue onto the next set of talks in Egypt in two years’ time.
For over a decade, Africa has pushed for a UN protocol on drought risk management that would acknowledge drought as an issue requiring a regional and global – not just a national – response, potentially paving the way for more finance to help ensure water is available when drought hits.
A formal protocol would enable countries to transition from reacting to drought once it hits to “a proactive enabling mechanism to address drought and its effects such as migration”, said a Tunisian negotiator on behalf of the African Group of countries last week. Once land is regularly too dry and infertile to grow crops or graze animals, people often leave to seek a living elsewhere.
But this effort to adopt a protocol, led by Africa, has been resisted at successive land restoration COPs under the UN Convention to Combat Desertification (UNCCD), mainly by developed countries, which argue that a legally weaker alternative – a framework – would be faster and cheaper to set up.
Governments at the previous COP in Saudi Arabia in 2024 failed to reach agreement despite talks running past midnight, while this year’s saw African officials coordinate a walkout from negotiating rooms on Wednesday morning, according to two sources at the talks.
Drought deal delayed until 2028
The IISD’s Earth Negotiations Bulletin, a non-governmental organisation which unlike the media is allowed to watch and report on closed-door talks, said a call to suspend negotiations on Wednesday showed negotiations had reached “boiling point” and “made some jaws drop”.
Negotiations resumed after a lunchtime meeting with the Mongolian COP presidency although governments were only eventually able to agree that they could not find consensus in Ulaanbaatar and should resume talks on an instrument to deal with drought in 2028.
Christine Colvin, WWF’s head of freshwater policy, told Climate Home News that, with droughts hitting from Honduras to the English region of Hampshire, something concrete – whether a protocol or a framework – is needed urgently “rather than the can being kicked down the road for another two years as will now happen with the protocol procrastination”.

But, in a closing press conference on Friday, the Mongolian minister presiding over talks celebrated that governments had reached consensus on several “contentious” issues and that agenda items blocked at this year’s COP17 would be put on the agenda for COP18 in Egypt.
US blocks agenda items
Other agenda items that divided countries were on measuring land degradation’s effects on women, enhancing the involvement of civil society and women in land COPs, and the UNCCD working more closely and effectively with the UN’s climate and nature conventions.
On the COP’s opening day two weeks ago, the US representative said the Trump government objects to these agenda items “on their premise and no amount of negotiation will allow us to join consensus on these items. As such we request that they be struck from the agenda at which time we will then be able to approve it, saving us valuable negotiating time.”
A US State Department spokesperson later told Climate Home News that the US wants the UN “to get back to basics by refocusing on its core mandate, eliminating overlap, and reducing competition for scarce resources”.
The spokesperson added, “that means prioritising the concrete work member states created [the UN] to do – rather than diverting limited time, attention, and resources toward social and political agendas, including gender-related initiatives.”

On COP’s first day, the European Union and Brazil pushed back against the blocking of these agenda items, with a Brazilian negotiator saying his country attaches “great importance” to them. But the Mongolian presidency directed governments to adopt the rest of the agenda without the controversial items, which were discussed privately with countries throughout the two weeks.
An EU statement, read out later by Irish minister Timmy Dooley, accused “some parties” (meaning national governments) of having adopted a “less constructive approach” and preventing “discussions on important matters from even commencing”.
The agenda items the US refused to engage with were never discussed and were only placed onto the agenda for the next COP on the last day. Those talks will take place in Egypt in two years’ time, with Donald Trump due then to be in his last year as US president.
No restoration without women
The blocking of the gender agenda item has stymied attempts, agreed on by governments at the last COP, to develop gender-specific indicators for the UNCCD’s next overall framework and to facilitate more women delegates at COPs. Women made up only about a quarter of delegates to COP15 in 2022, UNCCD analysis with the latest data shows
Criticising the move to keep gender off the agenda, the EU said in a statement that it welcomes “the attention being given at COP17 to women pastoralists and herders, recognising their contribution to sustainable land management and resilient rural livelihoods”.
The head of the UNCCD, former Egyptian environment minister Yasmine Fouad, said on Friday that “regardless that the agenda item was blocked”, she was proud that she and COP17 President Batmunkh Battsetseg had led the COP as women and attended the gender caucus (a meeting of groups supporting women at the talks).

“Without the women,” she told the closing press conference on Friday, “we will not be able to restore land, restore hope, restore life or restore even our children and grandchildren. And we will keep on pushing that agenda.”
The civil society agenda item aimed to allow NGOs to attend land COP negotiations, as they do at climate COPs, and included terms of reference for an Indigenous Peoples Caucus.
A representative of Indigenous Peoples told the COP’s closing plenary meeting that the group had “deep disappointment that the agenda of this COP has removed the dedicated space for indigenous peoples”. “We cannot restore the land while removing the voices of those who care for it,” she said.
On Tuesday, the UNCCD’s deputy head Andrea Meza was asked about Indigenous Peoples’ participation. She said that the blocking of “one agenda item” is “generating uncertainty in the progress” towards creating caucuses for Indigenous Peoples and for Local Communities within the talks.
Because of the “complex geopolitical situation” making it hard to obtain consensus, coalitions of the willing have become more important, she added.
Mining out, money in
Outside the formal negotiations, the summit was marked by a focus on the strongly Mongolian issues of the role played by pastoralists and rangelands like grasslands, as well as mining, in both degrading and restoring land.
Part of the conference was sponsored by Australian mining company Rio Tinto and its local partner Oyu Tolgoi. Their presence was protested by campaigners wearing T-shirts calling on the companies to “stop wasting drinking water” and to “get out of Mongolia”.

The UNCDD and others praised the success of the summit in raising more finance for land restoration. The COP saw institutions like the Asian Development Bank and Global Environment Facility pledge money to combat land degradation, with the UNCCD estimating that $645 million of new commitments were made.
An estimated $355 billion a year is needed through 2030 to meet global land restoration commitments, compared with around $77 billion currently invested. Private finance accounts for only around 6% of global investment, according to the UNCCD.
UNCCD chief scientist Baron Orr told a press conference that many of the announcements were public-private partnerships that use government money to “even the playing field” for companies that want to protect land, in a bid to ensure they are not disadvantaged compared with those that do not.
Such partnerships are a “huge opportunity”, he said, especially as “we’re not in a moment of public finance – public finance is tight in every country.”
The post Despite African walkout, fractious land COP ends without drought deal appeared first on Climate Home News.
Despite African walkout, fractious land COP ends without drought deal
Climate Change
Pacific islands seek backing for new regional fund ahead of COP31
Burdened by rising fuel import costs and an “ocean crisis” of record-breaking heat, Pacific island nations are seeking to build support for a new regional fund ahead of COP31, intended to channel investment into renewable energy, community resilience and ocean protection, experts said.
Leaders from the 18-member Pacific Islands Forum (PIF), including Australia and New Zealand, are expected to issue a call for global pledges to the Pacific Resilience Facility (PRF) at a high-level meeting this coming week in Palau, seeking to build a new model for financing climate action.
The new regional fund was formally launched in May this year and is meant to “serve communities at a community level”, swiftly channelling investments for their projects on the ground, according to Fiji’s assistant minister for foreign affairs, Lenora Qereqeretabua.
“We are expecting pledges for the PRF, and these funds will go to communities that apply,” she told journalists at an online briefing. “We have organised it in such a way that it makes our application processes much, much easier than applying for global funding.”
Qereqeretabua added that she expects that PRF funds will be “utilised by communities to protect themselves from climate change and the effects of climate change.”
The Pacific Islands Forum meeting is expected to shape the region’s priorities ahead of this year’s pre-COP, hosted by Fiji and Tuvalu, and COP31, which will be co-led by Australia and Türkiye.
At COP31, a dedicated session on the climate finance needs of small island states will seek to drive pledges into the PRF. The fund has so far received about $172 million in capital – with about $67 million coming from Australia – and aims to close the year with $500 million.
Ocean heat and fossil fuel shocks
Leaders from the Pacific will meet in Palau from Sunday amid an “ocean crisis” of record-breaking ocean heat caused by this year’s “super El Niño”, according to Kevin Chand, Pacific ocean policy director at National Geographic’s Pristine Seas conservation project.
Leaders at the PIF are expected to put forward commitments towards new marine protected areas, which will be key for shielding ecosystems from future climate extremes, Chand said. The forum is expected to issue a statement on the need for ocean action at COP31, and announce commitments towards reaching the global goal of protecting 30% of the planet’s land and sea ecosystems by 2030.
Rising ocean heat could lead to food insecurity and lost government earnings in the region, as key fish stocks like tuna start migrating away from their coastline in search of colder waters, said Coral Pasisi, director of climate change and sustainability at the Pacific Community (SPC).
Climate shocks are deepening existing economic pressures, as Pacific nations have spent up to a quarter of their GDP on fossil fuel imports due to the war in Iran, according to a recent report by the University of New South Wales (UNSW) in Australia.
Wesley Morgan, one of the study’s authors, told journalists that partner nations “ought to be putting their money where their mouth is”, and should support the energy transition in the Pacific by covering the upfront costs of switching from polluting diesel to solar power, batteries and electricity grid upgrades.
China keeps Indonesia’s battery dream afloat but future less certain
Given the increase in climate-related shocks and sea-level rise, the PIF should also mention the need to phase out fossil fuel extraction and consumption, said Sindra Sharma, international policy lead at the Pacific Islands Climate Action Network (PICAN).
Last year’s COP30 failed to deliver a global roadmap on transitioning away from fossil fuels, which led to a group of countries – including several Pacific island nations – pursuing their own fossil fuel phase-out summit in Santa Marta, Colombia. Next year’s conference will be hosted by Tuvalu and co-chaired by Ireland, which should also receive backing from the PIF, Sharma said.
Both the chairs of the Santa Marta coalition and the Australian COP31 co-presidency have vowed to continue a push for this topic to be discussed at COP31.

New fund to test allies
As local communities in the Pacific struggle to access global climate funds, the PRF’s planned model for quick, direct disbursements has “very solid and good” intentions, Sharma said, but it will need political and financial backing from donor countries.
“The proof is going to be when the fund actually starts operating and delivering to communities,” she added. “If there is too much bureaucracy in being able to access the funds, for example. These things will have to be scrutinised.”
The facility aims to deliver funds in two categories: one for climate adaptation and “disaster resilience”, and another for social and community resilience that includes areas like community capacity-building, education, data analytics and financial management, among others. It will launch its first call for proposals at the PIF.
Morgan added that Australia will need to “leverage global interests” so that funding is directed to the Pacific Resilience Facility “or else the Pacific won’t be able to trust Australia as a partner”. The country ratified the PRF treaty in May, triggering its entry into force.
“The perception [of Australia] in the region is genuinely divided, and it’s worth being honest about it,” Sharma said, adding that the pre-COP31 in Fiji, which is usually limited to a technical space for negotiations, will determine how meaningful Australia’s advocacy for the Pacific can be.
This time, Pacific nations want to use the pre-COP in early October as an opportunity to demonstrate the challenges their largely low-lying islands face and to advocate for their political priorities, including a renewed global effort to limit global warming to 1.5C by cutting emissions faster and deeper. World leaders are due to visit Tuvalu to experience the frontline of rising sea levels, although Australia and Fiji have yet to confirm who will attend.
“In Bonn, Australia was largely missing on the negotiated outcomes that we so urgently need to see. It’s not enough to get Pacific priorities on the agenda. Agenda placement is not delivery,” Sharma added.
The post Pacific islands seek backing for new regional fund ahead of COP31 appeared first on Climate Home News.
Pacific islands seek backing for new regional fund ahead of COP31
Climate Change
Climate change exposes 580 million children to 20 extra ‘heat-stress days’ every year
More than 40% of children under the age of 10 globally are already experiencing at least 20 additional “heat-stress days” due to climate change.
This is according to a new attribution study, published in Science Advances, which combines climate models with demographic data to assess the age groups and regions that are exposed to the most hot, humid days.
The study finds that children up to the age of nine already face more additional heat-stress days globally as a result of climate change than any other age group.
It adds that south Asia and west Africa are recording the greatest childhood exposure to dangerous levels of humid heat – largely because these regions have a rapidly growing population with the highest proportion of young children.
As the climate warms, children will continue to be more exposed to heat stress than any other age group, the paper warns.
The lead author of the study tells Carbon Brief that the findings should inform discussions about climate justice, noting that children in developing countries “have contributed the least to historical greenhouse gas emissions”.
Humid heat
High temperatures can be deadly. For example, the heatwaves that swept across Europe in the summer of 2026 have been linked to tens of thousands of “excess deaths”.
A prominent 2021 study found that children born in the 21st century will be exposed to more extreme weather events in their lifetimes than their parents and grandparents.
Four years later, a study conducted by scientists from the same team found that more than half of children born in 2020 – around 62 million people – will experience “unprecedented lifetime exposure” to heatwaves, even if warming is limited to 1.5C.
Now, the latest research from the same team finds that children already face greater exposure to dangerous levels of humid heat than adults as a result of human-caused climate change.
Extreme heat is particularly dangerous when combined with high humidity. In hot weather, the human body produces sweat to cool itself down. However, as humidity increases, sweating becomes less effective.
The study uses wet-bulb globe temperature – a measure of temperature that takes humidity and wind into account – to calculate heat stress. It defines a “heat-stress day” as any day with a wet-bulb globe temperature above 28C, as this is considered the threshold for “moderate heat stress”
The authors then use climate models to simulate global temperature patterns in the present-day climate. (The authors use the climate of 2023, in which human activity has caused 1.3C of warming, to represent the “present-day”.)
They then count the number of heat-stress days that each country records on average, per year. The authors then repeat this exercise, simulating a pre-industrial climate without human-caused warming.
By comparing the number of heat-stress days in the present-day climate with the number in a pre-industrial climate, the authors can determine how many extra heat-stress days were driven by climate change. They refer to these as “extra” or “attributable” heat-stress days.
The authors find that “low-latitude” countries, located in the tropics, record the most extra heat-stress days.
For example, the paper finds that people living in Côte d’Ivoire currently face 112 heat-stress days every year. It adds that around half of these are due to human-caused climate change.
In contrast, Germany sees only 0.1 heat-stress days per year in today’s climate on average, which is largely attributable to human-caused climate change.
Rosa Pietroiusti, a PhD student at Vrije Universiteit Brussel and lead author on the study, explains why this number may seem lower than expected.
She tells Carbon Brief that the paper “really focuses on humid heat, at levels that are relatively rarely felt in Europe”. She adds:
“Our data also doesn’t capture the urban heat island effect, due to the resolution of the data we use, which also would lead to underestimations of heat stress locally, and lead to a mismatch with what people are experiencing at local scales, particularly in cities.”
Inequality
Extreme heat affects some people more severely than others. Children, people over 65 and those with pre-existing medical conditions or certain disabilities are among the most vulnerable. This is because their bodies are less able to regulate their temperature.
The authors use gridded demographic data to determine the age structure of each country. From this, they calculate how many people from each age cohort are exposed to extra heat days as a result of climate change.
The research finds that globally, 583 million children under the age of 10 already live through at least 20 attributable heat days every year. This accounts for 44% of all children in this age bracket.
In comparison, 190 million people aged 60-69 face at least 20 attributable heat days per year, accounting for 30% of this age cohort.
The authors find that children face the greatest exposure to humid heat for two main reasons.
First, there are more young people alive today than older people, with 1.3 billion children aged under 10 in the world, compared to 0.6 billion people aged 60-69.
Second, they find that countries in Africa and Asia typically have rapidly growing populations with more young children. In contrast, many countries in the northern hemisphere – which are typically cooler – have older populations.
The map below shows how many extra stress heat days each country currently faces as a result of human-caused climate change. Darker reds indicate a higher number of attributable heat days. The blue circles show the percentage of the population under the age of 10, with larger circles indicating a higher percentage.

Warming world
The authors also repeat their analysis for a 1.5C and 2C warmer world. They use population estimates from the SSP2 scenario, which projects that the world’s population will peak at more than nine billion in the second half of the 21st century, with most growth occurring in low-latitude regions – especially in sub-Saharan Africa.
The research finds that, in today’s climate, 11% of all under 10s currently experience 100 or more extra heat-stress days per year due to climate change. In worlds warmed by 1.5C and 2C, the percentage rises to 13% and 23%, respectively.
In contrast, only 6% of all people aged 60-69 currently face 100 or more extra heat-stress days each year due to climate change. This number rises to 9% and 17% for 1.5C and 2C worlds, respectively.
These results are shown in the plot below. The three rows represent the climates of 2023 (top), a 1.5C world (middle) and a 2C world (bottom). The columns show different age cohorts, from the oldest on the left to the youngest on the right.
Each circle contains 100 coloured dots, with each dot representing 1% of the age cohort.
The colour of the dot represents exposure to annual heat-stress day, with darker dots indicating more heat-stress days. Grey dots mean that people experience fewer than one extra heat-stress day per year due to human-caused climate change, while black dots mean more than 150 extra heat-stress days due to climate change.
The figure shows that higher warming levels expose more people to heat stress and that younger cohorts tend to be worst affected.
For example, the top-right circle represents heat stress for under 10s in the present-day climate. Three of these dots are coloured black, indicating that 3% faced at least 150 attributable heat-stress days in 2023.

Pietroiusti tells Carbon Brief the study uses wet-bulb temperature because it is a “well-established heat stress metric”. However, she notes that it was not “explicitly defined to focus on children”. She continues:
“A really important step forward in the research community would be to link up climate science and health science experts to do research on what metrics are really most representative of, for example, health impacts and educational impacts that children will be suffering.”
Vulnerability
Dr Qinqin Kong, a postdoctoral researcher at the departments of medicine and health policy at Stanford University, who was not involved in the study, praises its “robust” methodology.
He tells Carbon Brief that the research provides “a timely quantitative evidence for discussions of climate justice, children’s rights and intergenerational equity”.
However, Kong suggests that the paper “may overstate the contrast between children and the elderly and underestimate the relative burden of older adults”.
He says:
“The elderly may also be more vulnerable due to their social circumstances. Children often benefit from parental supervision and caregiving, whereas many older adults live alone, have limited mobility and face barriers to accessing cooling or emergency assistance during heat events.”
Kong also notes that “people and societies in the mid-latitudes [for example, across much of Europe and North America] are less adapted to heat”, which may make them vulnerable to its impacts.
For example, he says that Europe “shows substantially stronger relative risk of heat mortality likely due to less heat-acclimatised populations, lower air conditioning prevalence and urban designs that don’t favour heat dissipation”.
Similarly, Dr Daniel Vecellio – a researcher at the University of Nebraska, who was not involved in the study – tells Carbon Brief that children are an “understudied cohort”.
However, he says there is “reason for hope” because “children are typically pretty good behavioural adapters to extreme heat” and because people who are “chronically exposed to extreme heat” will “have a better chance at better acclimatisation”.
Pietroiusti tells Carbon Brief that global reporting on heatwaves is often skewed towards wealthier nations.
For example, she notes that large-scale databases of disasters, such as EM-DAT, often underrepresent heatwaves in Africa, due in part to a lack of news coverage and formal reporting. She adds:
“Studies like this, which start from the climate data, can start to fill some of these gaps.”
She adds that the paper should inform discussions about climate justice, noting that children in developing countries, who are most severely affected by the increase in heat-stress days, “have contributed the least to historical greenhouse gas emissions”.
Pietroiusti, R. et al. (2026) Age-specific exposure to human-induced increases in humid heat, Science Advances, doi:10.1126/sciadv.aeb3232
The post Climate change exposes 580 million children to 20 extra ‘heat-stress days’ every year appeared first on Carbon Brief.
Climate change exposes 580 million children to 20 extra ‘heat-stress days’ every year
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