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暴雨、洪水和热浪等极端天气事件被称为中国的“新常态”。

今年四月的暴雨和洪水导致中国损失近120亿元人民币(16.5亿美元),灾害损失“为近10年同期最重”。六月,中国约有33条河流“超过警戒水位”,数十人丧生。广西桂林遭遇自1998年以来最大洪水。

不到一年前,北京气象部门在2023年7月的短短五天内记录了745毫米的降雨量,几乎是该市往年整月的降雨量。

北京周边的河北省在同一时间也出现了强降雨。2023年7月,临城县的降雨量超过1米,是其年平均降雨量的两倍。

2021年7月,河北的邻省河南出现了“千年一遇”的暴雨。

虽然中国已经出台了更多政策来改善其应急系统和基础设施,但日益增多的极端天气事件仍继续带来挑战。

在本篇Q&A中,Carbon Brief将探讨中国近期洪灾的原因、中国如何适应洪灾,以及是否需要未雨绸缪、重新审视其防洪系统。

近期洪灾背后的原因是什么?

近年来频繁发生的暴雨和洪水背后有各种因素。

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英国布里斯托尔大学地理科学学院名誉研究员奥利弗·温(Oliver Wing)博士告诉Carbon Brief:“总体而言,由于克劳修斯-克拉佩龙方程,我们预计气候变暖的世界将更加湿润。”

根据该方程,气温每升高1°C,空气中的湿度通常会增加约7%,这意味着气候变暖时降雨量可能会更大。

奥利弗·温指出,“对于日以下降雨量,我们看到的比例关系比该方程所显示的还要大。这使得地表水(更有可能)由于短时和高强度的局部降雨增加而在城市形成洪水”。

此外,他表示,“气候变暖正导致大多数地方的海平面上升,这意味着风暴潮造成破坏的基线更高”。

据《中国日报》引述中国气象局国家气候中心首席预报员郑志海称,自四月份以来,中国广东和广西等南部沿海省份频繁出现强降雨,其原因是“高于正常水平的温度”。

郑志海补充说,厄尔尼诺/南方涛动(在2023年中期进入厄尔尼诺升温阶段的自然气候周期)是部分原因,因为其提高了海面温度,并将大量水蒸气从南中国海和孟加拉湾引向中国南部。

宁波诺丁汉大学地理科学系系主任陈加信博士告诉Carbon Brief,今年4月广东的降雨模式与2023年9月6日至8日台风“海葵”过后的强降雨十分相似。

具体而言,强降雨是由来自东南亚和南亚季风模态中的低压湿气流,与来自菲律宾和西太平洋的另一个低压雨带碰撞产生的。

台风“海葵”给香港带来了140年来最严重的暴风雨,并在广东和福建两省造成了最严重的降雨。

陈加信表示,虽然在气象学意义上这些强烈暴风雨并不罕见,但由于全球变暖,其发生的频率越来越高。

四月是季风季的开始。大范围的暴风雨通常在四月平均发生三次。但是,今年中国仅在该月就遭受了至少八次区域性极端降雨事件侵袭,而且都是接连发生的。

在重庆和湖南等受影响地区,河流洪水的现象十分普遍。对于一般的河流洪水来说,确定原因可能更为复杂。

“有很多调节因素。在气候变暖的情况下,较干燥的土壤可能会使土地吸收更多降雨,从而减轻洪水带来的危害。许多洪水不是由强降雨造成,而是由融雪或落在饱和土壤上的低强度、长时间降雨造成的。 因此,单凭气候变暖导致降雨量增加不能合理推断出河流洪水也会增加。”奥利弗·温说。

陈加信表示,自然原因“当然”增加了湿度,“但人类引起的气候变化导致温室效应,造成海水温度上升,从而引起更多的风暴和低压雨带。这是事实。”

奥利弗·温同意,人类导致的气候变化的“热力学影响”增加了与风暴相关的降雨量。

但他补充道:“我们不甚了解的是,人为气候变化如何改变了气候系统的动态,以及这种变化在哪里和如何加剧或抑制了热力学响应。”

人类导致的气候变化起了什么作用?

许多研究发现,海面温度升高正在加剧高强度的连续极端降雨。

联合国政府间气候变化专门委员会(IPCC)的第六次评估报告(AR6)也指出,温室气体排放造成的人为气候变化导致海洋变暖,这也“很可能是已观测到的全球陆地强降水加剧的主要驱动因素”。

根据第六次评估报告,在全球相比工业化前升温1.5°C的情况下,东亚和中亚极端年最大日降雨量(Rx1)和五日累积降雨量(Rx5)预计将比1971年至2000年分别增加28%和15%。

该报告还指出,与之类似的是,在中国的城市群中,“全球从升温1.5°C增加到2°C可能会使非常潮湿日子的总降水强度增加1.8倍,最大五日降水量增加一倍”。

中国气象局中国气象科学研究院的陈阳教授告诉Carbon Brief,中国人为造成的强降雨的强度甚至超过预期。

“由于气候变暖导致大气湿度增加,潜热释放与潮湿风暴中的上升运动之间的反馈作用更强,因此人为造成的中国季风区强降水的加剧程度明显大于预期。”他解释说。

他补充说,与纬度相似的其他地区相比,这种反馈在中国东部尤为明显。

最近发表在《自然》上的一项研究还预计,由于气候变暖,中国的风暴活动将变得更加频繁和剧烈。研究显示,到21世纪末,中国东部沿海热带气旋的年平均发生频率预计将比现在增加16%。

A woman wearing a traditional costume during a hot day in Beijing, China.
在中国北京炙热的天气里,一名女子身着汉服。图片来源:Associated Press / Alamy Stock Photo

除了人类活动引发的气候变化之外,城市设计和建造不当,以及地下水开采、城市发展导致的建筑物重量、城市交通系统和采矿活动造成的沉降,也会加剧洪灾。

美国路易斯安那州立大学社会学系助理教授凯文·斯迈利(Kevin Smiley)博士告诉Carbon Brief:“气候变化正在加剧极端天气的严重程度和频率。由气候变化引起的额外降雨可能会导致原本只是建筑物的停车场在下雨天出现水坑,而现在洪水会漫过建筑物大门,造成数千美元的损失。”

“重要的是要记住:气候变化是人为的,所以这种风险的增加也有人为的根源。”

中国如何适应日益频繁的洪水?

中国修建了许多大型水利工程来防止洪涝灾害,例如2002年启动的从长江取水的南水北调工程。

在中国国务院最新公布的《国家水网建设规划纲要》中,在2035年前建成“国家水网”是未来防洪的“骨干”措施之一。

文件中的“骨干”工程还包括主要河流上的大型硬工程结构,如堤防、防洪闸和河道泄洪网络,以减轻洪水风险。

与此同时,发表在《海洋与海岸管理》(Ocean & Coastal Management)杂志上的一项研究发现,“基于自然的解决方案”在中国也变得流行起来。

沿海岸线和河口恢复和保护淡水沼泽、红树林和湿地,正在被用来为潮汐和风暴潮提供缓冲。它们包括上海的崇明岛湿地(长江三角洲)和深圳湾的福田和米埔湿地(珠江三角洲)。

规划文件中提出的另一个概念是“加快智慧发展”,利用互联网、数据和技术来监测和预防洪水。

首都北京已整合高清摄像机、望远镜、雷达图和卫星云图的数据,以提供实时灾害更新,从而改善应急响应时间。

中国东部港口城市宁波与电信公司合作,分析大数据并发布信息。

应急管理部表示,这些措施使2018年至2022年因自然灾害造成的死亡和失踪人数与2013年至2017年相比减少了54%。2023年,死亡人数继续下降,但与2018年至2022年水平相比,被毁建筑物数量和直接经济损失分别上升了97%和13%。

2015年,海绵城市的概念被写入住房和城乡建设部的政策文件。该计划在全国推广,武汉(1100万人口)、郑州(1000万人口)等30个主要城市被选为试点城市。

Aerial photo of Huangtaihu Lake, Qian'an City, China.
中国迁安市黄台湖。图片来源:Xinhua / Alamy Stock Photo

这些海绵城市旨在通过城市地区的“绿蓝设施”,如绿色屋顶、透水路面和雨水公园,收集、净化和再利用至少70%的洪水。整个系统旨在一次性解决城市供暖、淡水匮乏和洪水泛滥等问题。

中国也改进了其恢复过程。例如,在2021年台风“烟花”期间,宁波的洪灾受害者通过改进的在线文件系统,在一小时内就能获得经济补偿。

这些措施效果如何?

陈加信告诉 Carbon Brief,中国“在洪水和干旱灾害的准备、应对和恢复方面做得非常好”,这是两种最具破坏性的自然灾害。

“作为一个全球南方国家,”他将中国称为发展中国家,“中国用海绵城市和增强生态的解决方案应对气候变化,做得相当不错”。

然而,温认为,基于自然的解决方案,如海绵城市,可能会“很快饱和”,因此“它们的作用可能会被夸大”。他继续说:

“这些类型的干预措施对于相对频繁的低强度降雨最有效。在非常强烈、罕见的降雨(其概率在全球变暖的情况下迅速变化)期间,它们将很快不堪重负,造成最大的破坏和痛苦。”

2021 年,一场“历史罕见”的暴雨和洪水影响了海绵城市郑州 1400 多万人,造成 398 人死亡,凸显了海绵城市在气候变化面前的局限性。

《自然》杂志的研究称,海绵城市的设计只能承受 30 年一遇的降雨事件。陈加信说,除此之外,它还会造成一种虚假的安全感。它鼓励更多人迁往高风险地区,导致这些地区的人口和资产增加,而这些聚集地的保护需求也应声而涨,形成一种被称为“堤坝效应”的循环。

堤坝效应是一种悖论:修建防洪堤坝会导致人们对洪水风险的认知降低,业主更有可能投资于自己的房产,从而增加堤坝决口时的潜在损失。

根据《自然》杂志的论文,洪水的影响是人口稠密的黄河三角洲和珠江流域面临的一个关键挑战,这两个地区都面临着很高的洪水风险。

斯迈利说:“当社会的脆弱性与灾害交织在一起时,风险就会显现出来。脆弱性是社会性的,社会脆弱性越大,洪水的影响就越大……社会的脆弱性还是不公平的。一个有一定财富和良好保险的家庭,比一个靠薪水度日的家庭能更快、更成功地从洪水中恢复过来。”

中国政府通过特别政府债券拨款超过一万亿元人民币(1380 亿美元),用于支持弱势公民和今年 3 月遭受自然灾害的地区重建。据官方媒体《环球时报》报道,超过一半的资金将用于“防洪等水利工程建设”。

但过去,财政支持的提供一直受到质疑。全球再保险公司慕尼黑再保险(Munich Re)称,2023 年台风杜苏芮袭击中国时,在总计约 250 亿美元的损失中,只有 20 亿美元得到了承保。

此外,2015 年至 2018 年间,这些海绵城市的建设已经花费了中国 15-18 亿元人民币(2.1-2.5 亿美元)。维护费用将使这笔费用更高。

《自然》杂志的作者建议政府应致力于将分散的“灰色基础设施”(排水沟、管道和泵站等建筑结构)整合到现有的绿色蓝色设施中,但不应仅仅依赖工程基础设施。

中国科学院西北生态环境资源研究所研究员舒乐乐博士告诉《知识分子》杂志:“仅靠传统的工程方法无法减轻目前强降雨的影响”。

“每次下大雨,它造成的损失都会成为头条新闻,主要是因为城市里住着太多人,”舒补充道。

洪水易发地区的政府部门合作不当也导致灾害管理缺乏统一调配。

《自然》杂志的研究补充说,就长江和珠江三角洲而言,其缺乏一个覆盖全区的、且可以“把地划分土和投资融合起来的水文系统”。

中国社会科学院生态文明研究所研究员郑艳博士在 2023 年北京洪水过后指出,政府机构往往只顾自己的管辖范围,只想着转移问题,迅速疏导洪水,这给下游地区的城市带来了压力。

斯迈利说:“洪水不会在意人为划定的市、区或省的边界。一个地方有效的城市设计可能会减轻那里的洪水风险,但会间接增加其他地方的风险。以正义为中心、集体思考(统一筹划)可以提供一个本地化的解决方案来帮助所有人有效恢复,而不是加剧不平等。”

中国可以从其他城市学到什么?

洪水是世界各地城市都面临的挑战,中国因此可以借鉴大量的想法和技术。

《自然》杂志的论文建议,长江三角洲和珠江三角洲可以向恒河-布拉马普特拉河-梅格纳河三角洲和湄公河三角洲学习,“通过利用和调整因气候变化和人类活动而迅速变化的三角洲潜在动态,改善其对沉降和侵蚀等区域挑战的应对”。

该论文还提倡建设一个“积极主动、具有前瞻性、具有足够能力限制洪水破坏性影响并及时恢复灾前状态”的弹性社会。

鹿特丹是一座四面环水、人口 60 万的荷兰三角洲城市。鹿特丹建造了蓄水设施,例如具有蓄水功能、面积相当于四个奥林匹克游泳池的地下停车场, 且安装了绿色屋顶和外墙来吸收雨水。

日本在东京郊区埼玉县在地下建造了一个复杂的混凝土隧道和拱顶网络。这个网络位于大约地下 14 层,可容纳的雨水可以装满 1,000 多个奥运会标准泳池。

这两个城市的地下洪水转移设施经常被用作气候变化前沿城市可行的防洪系统的典范。

香港在跑马地马场的下方也有一个类似的地下雨水储存系统,旨在抵御 50 年一遇的洪水事件。

然而,陈加信表示,防洪措施的有效性难以横向比较,因为每个城市的地理、人口、密度和地形都非常不同。

他告诉 Carbon Brief:“在我看来,中国的特大城市应该考虑利用地下空间来储存超强暴雨突然排放的极端雨水……东京和鹿特丹利用地下空间的做法就相当明智。”

The post Q&A:中国如何适应日益频繁的洪灾 appeared first on Carbon Brief.

https://www.carbonbrief.org/qa%ef%bc%9a%e4%b8%ad%e5%9b%bd%e5%a6%82%e4%bd%95%e9%80%82%e5%ba%94%e6%97%a5%e7%9b%8a%e9%a2%91%e7%b9%81%e7%9a%84%e6%b4%aa%e7%81%be/

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Climate Change

The 2026 budget test: Will Australia break free from fossil fuels?

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In 2026, the dangers of fossil fuel dependence have been laid bare like never before. The illegal invasion of Iran has brought pain and destruction to millions across the Middle East and triggered a global energy crisis impacting us all. Communities in the Pacific have been hit especially hard by rising fuel prices, and Australians have seen their cost-of-living woes deepen.

Such moments of crisis and upheaval can lead to positive transformation. But only when leaders act with courage and foresight.

There is no clearer statement of a government’s plans and priorities for the nation than its budget — how it plans to raise money, and what services, communities, and industries it will invest in.

As we count down the days to the 2026-27 Federal Budget, will the Albanese Government deliver a budget for our times? One that starts breaking the shackles of fossil fuels, accelerates the shift to clean energy, protects nature, and sees us work together with other countries towards a safer future for all? Or one that doubles down on coal and gas, locks in more climate chaos, and keeps us beholden to the whims of tyrants and billionaires.

Here’s what we think the moment demands, and what we’ll be looking out for when Treasurer Jim Chalmers steps up to the dispatch box on 12 May.

1. Stop fuelling the fire
2. Make big polluters pay
3. Support everyone to be part of the solution
4. Build the industries of the future
5. Build community resilience
6. Be a better neighbour
7. Protect nature

1. Stop fuelling the fire

Action Calls for a Transition Away From Fossil Fuels in Vanuatu. © Greenpeace
The community in Mele, Vanuatu sent a positive message ahead of the First Conference on Transitioning Away from Fossil Fuels. © Greenpeace

In mid-April, Pacific governments and civil society met to redouble their efforts towards a Fossil Fuel Free Pacific. Moving beyond coal, oil and gas is fundamental to limiting warming to 1.5°C — a survival line for vulnerable communities and ecosystems. And as our Head of Pacific, Shiva Gounden, explained, it is “also a path of liberation that frees us from expensive, extractive and polluting fossil fuel imports and uplifts our communities”.

Pacific countries are at the forefront of growing global momentum towards a just transition away from fossil fuels, and it is way past time for Australia to get with the program. It is no longer a question of whether fossil fuel extraction will end, but whether that end will be appropriately managed and see communities supported through the transition, or whether it will be chaotic and disruptive.

So will this budget support the transition away from fossil fuels, or will it continue to prop up coal and gas?

When it comes to sensible moves the government can make right now, one stands out as a genuine low hanging fruit. Mining companies get a full rebate of the excise (or tax) that the rest of us pay on diesel fuel. This lowers their operating costs and acts as a large, ongoing subsidy on fossil fuel production — to the tune of $11 billion a year!

Greenpeace has long called for coal and gas companies to be removed from this outdated scheme, and for the billions in savings to be used to support the clean energy transition and to assist communities with adapting to the impacts of climate change. Will we see the government finally make this long overdue change, or will it once again cave to the fossil fuel lobby?

2. Make big polluters pay

Activists Disrupt Major Gas Conference in Sydney. © Greenpeace
Greenpeace Australia Pacific activists disrupted the Australian Domestic Gas Outlook conference in Sydney with the message ‘Gas execs profit, we pay the price’. © Greenpeace

While our communities continue to suffer the escalating costs of climate-fuelled disasters, our Government continues to support a massive expansion of Australia’s export gas industry. Gas is a dangerous fossil fuel, with every tonne of Australian gas adding to the global heating that endangers us all.

Moreover, companies like Santos and Woodside pay very little tax for the privilege of digging up and selling Australians’ natural endowment of fossil gas. Remarkably, the Government currently raises more tax from beer than from the Petroleum Resource Rent Tax (PRRT) — the main tax on gas profits.

Momentum has been building to replace or supplement the PRRT with a 25% tax on gas exports. This could raise up to $17 billion a year — funds that, like savings from removing the diesel tax rebate for coal and gas companies, could be spent on supporting the clean energy transition and assisting communities with adapting to worsening fires, floods, heatwaves and other impacts of climate change.

As politicians arrive in Canberra for budget week, they will be confronted by billboards calling for a fair tax on gas exports. The push now has the support of dozens of organisations and a growing number of politicians. Let’s hope the Treasurer seizes this rare window for reform.

3. Support everyone to be part of the solution

As the price of petrol and diesel rises, electric vehicles (EVs) are helping people cut fuel use and save money. However, while EV sales have jumped since the invasion of Iran sent fuel prices rising, they still only make up a fraction of total new car sales. This budget should help more Australians switch to electric vehicles and, even more importantly, enable more Australians to get around by bike, on foot, and on public transport. This means maintaining the EV discount, investing in public and active transport, and removing tax breaks for fuel-hungry utes and vans.

Millions of Australians already enjoy the cost-saving benefits of rooftop solar, batteries, and getting off gas. This budget should enable more households, and in particular those on lower incomes, to access these benefits. This means maintaining the Cheaper Home Batteries Program, and building on the Household Energy Upgrades Fund.

4. Build the industries of the future

Protest of Woodside and Drill Rig Valaris at Scarborough Gas Field in Western Australia. © Greenpeace / Jimmy Emms
Crew aboard Greenpeace Australia Pacific’s campaigning vessel the Oceania conducted a peaceful banner protest at the site of the Valaris DPS-1, the drill rig commissioned to build Woodside’s destructive Burrup Hub. © Greenpeace / Jimmy Emms

If we’re to transition away from fossil fuels, we need to be building the clean industries of the future.

No state is more pivotal to Australia’s energy and industrial transformation than Western Australia. The state has unrivaled potential for renewable energy development and for replacing fossil fuel exports with clean exports like green iron. Such industries offer Western Australia the promise of a vibrant economic future, and for Australia to play an outsized positive role in the world’s efforts to reduce emissions.

However, realising this potential will require focussed support from the Federal Government. Among other measures, Greenpeace has recommended establishing the Australasian Green Iron Corporation as a joint venture between the Australian and Western Australian governments, a key trading partner, a major iron ore miner and steel makers. This would unite these central players around the complex task of building a large-scale green iron industry, and unleash Western Australia’s potential as a green industrial powerhouse.

5. Build community resilience

Believe it or not, our Government continues to spend far more on subsidising fossil fuel production — and on clearing up after climate-fuelled disasters — than it does on helping communities and industries reduce disaster costs through practical, proven methods for building their resilience.

Last year, the Government estimated that the cost of recovery from disasters like the devastating 2022 east coast floods on 2019-20 fires will rise to $13.5 billion. For contrast, the Government’s Disaster Ready Fund – the main national source of funding for disaster resilience – invests just $200 million a year in grants to support disaster preparedness and resilience building. This is despite the Government’s own National Emergency Management Agency (NEMA) estimating that for every dollar spent on disaster risk reduction, there is a $9.60 return on investment.

By redirecting funds currently spent on subsidising fossil fuel production, the Government can both stop incentivising climate destruction in the first place, and ensure that Australian communities and industries are better protected from worsening climate extremes.

No communities have more to lose from climate damage, or carry more knowledge of practical solutions, than Aboriginal and Torres Strait Islander peoples. The budget should include a dedicated First Nations climate adaptation fund, ensuring First Nations communities can develop solutions on their own terms, and access the support they need with adapting to extreme heat, coastal erosion and other escalating challenges.

6. Be a better neighbour

The global response to climate change depends on the adequate flow of support from developed economies like Australia to lower income nations with shifting to clean energy, adapting to the impacts of climate change, and addressing loss and damage.

Such support is vital to building trust and cooperation, reducing global emissions, and supporting regional and global security by enabling countries to transition away from fossil fuels and build greater resilience.

Despite its central leadership role in this year’s global climate negotiations, our Government is yet to announce its contribution to international climate finance for 2025-2030. Greenpeace recommends a commitment of $11 billion for this five year period, which is aligned with the global goal under the Paris Agreement to triple international climate finance from current levels.
This new commitment should include additional funding to address loss and damage from climate change and a substantial contribution to the Pacific Resilience Facility, ensuring support is accessible to countries and communities that need it most. It should also see Australia get firmly behind the vision of a Fossil Fuel Free Pacific.

7. Protect nature

Rainforest in Tasmania. © Markus Mauthe / Greenpeace
Rainforest of north west Tasmania in the Takayna (Tarkine) region. © Markus Mauthe / Greenpeace

There is no safe planet without protection of the ecosystems and biodiversity that sustain us and regulate our climate.

Last year the Parliament passed important and long overdue reforms to our national environment laws to ensure better protection for our forests and other critical ecosystems. However, the Government will need to provide sufficient funding to ensure the effective implementation of these reforms.

Greenpeace has recommended $500 million over four years to establish the National Environment Agency — the body responsible for enforcing and monitoring the new laws — and a further $50 million to Environment Information Australia for providing critical information and tools.

Further resourcing will also be required to fulfil the crucial goal of fully protecting 30% of Australian land and seas by 2030. This should include $1 billion towards ending deforestation by enabling farmers and loggers to retool away from destructive practices, $2 billion a year for restoring degraded lands, $5 billion for purchasing and creating new protected areas, and $200 million for expanding domestic and international marine protected areas.

Conclusion

This is not the first time that conflict overseas has triggered an energy crisis, or that a budget has been preceded by a summer of extreme weather disasters, highlighting the urgent need to phase out fossil fuels. What’s different in 2026 is the availability of solutions. Renewable energy is now cheaper and more accessible than ever before. Global momentum is firmly behind the transition away from fossil fuels. The Albanese Government, with its overwhelming majority, has the chance to set our nation up for the future, or keep us stranded in the past. Let’s hope it makes some smart choices.

The 2026 budget test: Will Australia break free from fossil fuels?

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Climate Change

What fossil fuels really cost us in a world at war

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Anne Jellema is Executive Director of 350.org.

The war on Iran and Lebanon is a deeply unjust and devastating conflict, killing civilians at home, destroying lives, and at the same time sending shockwaves through the global economy. We, at 350.org, have calculated, drawing on price forecasts from the International Monetary Fund (IMF) and Goldman Sachs, just how much that volatility is costing us. 

Even under the IMF’s baseline scenario – a de facto “best case” scenario with a near-term end to the war and related supply chain disruptions – oil and gas price spikes are projected to cost households and businesses globally more than $600 billion by the end of the year. Under the IMF’s “adverse scenario”, with prolonged conflict and sustained price pressures, we estimate those additional costs could exceed $1 trillion, even after accounting for reduced demand.

Which is why we urgently need a power shift. Governments are under growing pressure to respond to rising fuel and food costs and deepening energy poverty. And it’s becoming clearer to both voters and elected officials that fossil dependence is not only expensive and risky, but unnecessary. 

People who can are voting with their wallets: sales of solar panels and electric vehicles are increasing sharply in many countries. But the working people who have nothing to spare, ironically, are the ones stuck with using oil and gas that is either exorbitantly expensive or simply impossible to get.

Drain on households and economies

In India, street food vendors can’t get cooking gas and in the Philippines, fishermen can’t afford to take their boats to sea. A quarter of British people say that rising energy tariffs will leave them completely unable to pay their bills. This is the moment for a global push to bring abundant and affordable clean energy to all.

In April, we released Out of Pocket, our new research report on how fossil fuels are draining households and economies. We were surprised by the scale of what we found. For decades, governments have reassured people that energy price spikes are unfortunate but unavoidable – the result of distant conflicts, market forces or geopolitical shocks beyond anyone’s control. But the numbers tell a different story. 

    What we are living through today is not an energy crisis. It is a fossil fuel crisis. In just the first 50 days of the Middle East conflict, soaring oil and gas prices have siphoned an estimated $158 billion–$166 billion from households and businesses worldwide. That is money extracted directly from people’s pockets and transferred, almost instantly, into fossil fuel company balance sheets. And this figure only captures the immediate impact of price spikes, not the permanent economic drain of fossil dependence. Fossil fuels don’t just cost us once, they cost us over and over again.

    First, through our bills. Every time there is a war, an embargo or a supply disruption, fossil fuel prices surge. For ordinary people, this means higher costs for energy, transport and food. Many Global South countries have little or no fiscal space to buffer the shock; instead, workers and families pay the price.

    Second, through our taxes. Governments around the world continue to pour vast sums of public money into fossil fuel subsidies. These are often justified as a way to protect the most vulnerable at the petrol pump or in their homes. But in reality, the benefits are overwhelmingly captured by wealthier households and corporations. The poorest 20% receive just a fraction of this support, while public finances are drained.

    Third, through climate impacts. New research across more than 24,000 global locations gives a granular account of the true costs of extreme heat, sea level rise and falling agricultural yields. Using this data to update IMF modelling of the social cost of carbon, we found that fossil fuel impacts on health and livelihoods amount to over $9 trillion a year. This is the biggest subsidy of all, because these massive and mounting costs are not charged to Big Oil – they are paid for by governments and households, with the poorest shouldering the lion’s share. 

    Massive transfer of wealth to fossil fuel industry

    Adding up direct subsidies, tax breaks and the unpaid bill for climate damages, the total transfer of wealth from the public to the fossil fuel industry amounts to $12 trillion even in a “normal” year without a global oil shock. That’s more than 50% higher than the IMF has previously estimated, and equivalent to a staggering $23 million a minute.

    The fossil fuel industry has become extraordinarily adept at profiting from instability. When conflict drives up prices, companies do not lose, they gain. In the current crisis, oil producers and commodity traders are on track to secure tens of billions of dollars in additional windfall profits, even as households face rising bills and governments struggle to manage the fallout.

    Fossil fuel crisis offers chance to speed up energy transition, ministers say

    This growing disconnect is impossible to ignore. Investors are advised to buy into fossil fuel firms precisely because of their ability to generate profits in times of crisis. Meanwhile, ordinary people are told to tighten their belts.

    In 2026, unlike during the oil shocks of the 1970s, clean energy is no longer a distant alternative. Now, even more than when gas prices spiked due to Russia’s invasion of Ukraine in 2022, renewables are often the cheapest option available. Solar and wind can be deployed quickly, at scale, and without the volatility that defines fossil fuel markets.

    How to transition from dirty to clean energy

    The solutions are clear. Governments must implement permanent windfall taxes on fossil fuel companies to ensure that extraordinary profits generated during crises are redirected to support households. These revenues can be used to reduce energy bills, invest in public services, and accelerate the rollout of clean energy.

    Second, we must shift subsidies away from fossil fuels and towards renewable solutions, particularly those that can be deployed quickly and equitably, such as rooftop and community solar. This is not just about cutting emissions. It is about building a more stable, fair and resilient energy system.

    Finally, we need binding plans to phase out fossil fuels altogether, replacing them with homegrown renewable energy that can shield economies from future shocks. Because what the current crisis has made clear is this: as long as we remain dependent on fossil fuels, we remain vulnerable – to conflict, to price volatility and to the escalating impacts of climate change.

    The true price of fossil fuels is no longer hidden. It is visible in rising bills, strained public finances and communities pushed to the brink. And it is being paid, every day, by ordinary people around the world.

    It’s time for the great power shift

    Full details on the methodology used for this report are available here.

    The Great Power Shift is a new campaign by 350.org global campaign to pressure governments to bring down energy bills for good by ending fossil fuel dependence and investing in clean, affordable energy for all

    Logo of 350.org campaign on “The Great Power Shift”

    Logo of 350.org campaign on “The Great Power Shift”

    The post What fossil fuels really cost us in a world at war appeared first on Climate Home News.

    What fossil fuels really cost us in a world at war

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    Climate Change

    Traditional models still ‘outperform AI’ for extreme weather forecasts

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    Computer models that use artificial intelligence (AI) cannot forecast record-breaking weather as well as traditional climate models, according to a new study.

    It is well established that AI climate models have surpassed traditional, physics-based climate models for some aspects of weather forecasting.

    However, new research published in Science Advances finds that AI models still “underperform” in forecasting record-breaking extreme weather events.

    The authors tested how well both AI and traditional weather models could simulate thousands of record-breaking hot, cold and windy events that were recorded in 2018 and 2020.

    They find that AI models underestimate both the frequency and intensity of record-breaking events.

    A study author tells Carbon Brief that the analysis is a “warning shot” against replacing traditional models with AI models for weather forecasting “too quickly”.

    AI weather forecasts

    Extreme weather events, such as floods, heatwaves and storms, drive hundreds of billions of dollars in damages every year through the destruction of cropland, impacts on infrastructure and the loss of human life.

    Many governments have developed early warning systems to prepare the general public and mobilise disaster response teams for imminent extreme weather events. These systems have been shown to minimise damages and save lives.

    For decades, scientists have used numerical weather prediction models to simulate the weather days, or weeks, in advance.

    These models rely on a series of complex equations that reproduce processes in the atmosphere and ocean. The equations are rooted in fundamental laws of physics, based on decades of research by climate scientists. As a result, these models are referred to as “physics-based” models.

    However, AI-based climate models are gaining popularity as an alternative for weather forecasting.

    Instead of using physics, these models use a statistical approach. Scientists present AI models with a large batch of historical weather data, known as training data, which teaches the model to recognise patterns and make predictions.

    To produce a new forecast, the AI model draws on this bank of knowledge and follows the patterns that it knows.

    There are many advantages to AI weather forecasts. For example, they use less computing power than physics-based models, because they do not have to run thousands of mathematical equations.

    Furthermore, many AI models have been found to perform better than traditional physics-based models at weather forecasts.

    However, these models also have drawbacks.

    Study author Prof Sebastian Engelke, a professor at the research institute for statistics and information science at the University of Geneva, tells Carbon Brief that AI models “depend strongly on the training data” and are “relatively constrained to the range of this dataset”.

    In other words, AI models struggle to simulate brand new weather patterns, instead tending forecast events of a similar strength to those seen before. As a result, it is unclear whether AI models can simulate unprecedented, record-breaking extreme events that, by definition, have never been seen before.

    Record-breaking extremes

    Extreme weather events are becoming more intense and frequent as the climate warms. Record-shattering extremes – those that break existing records by large margins – are also becoming more regular.

    For example, during a 2021 heatwave in north-western US and Canada, local temperature records were broken by up to 5C. According to one study, the heatwave would have been “impossible” without human-caused climate change.

    The new study explores how accurately AI and physics-based models can forecast such record-breaking extremes.

    First, the authors identified every heat, cold and wind event in 2018 and 2020 that broke a record previously set between 1979 and 2017. (They chose these years due to data availability.) The authors use ERA5 reanalysis data to identify these records.

    This produced a large sample size of record-breaking events. For the year 2020, the authors identified around 160,000 heat, 33,000 cold and 53,000 wind records, spread across different seasons and world regions.

    For their traditional, physics-based model, the authors selected the High RESolution forecast model from the Integrated Forecasting System of the European Centre for Medium-­Range Weather Forecasts. This is “widely considered as the leading physics-­based numerical weather prediction model”, according to the paper.

    They also selected three “leading” AI weather models – the GraphCast model from Google Deepmind, Pangu-­Weather developed by Huawei Cloud and the Fuxi model, developed by a team from Shanghai.

    The authors then assessed how accurately each model could forecast the extremes observed in the year 2020.

    Dr Zhongwei Zhang is the lead author on the study and a researcher at Karlsruhe Institute of Technology. He tells Carbon Brief that many AI weather forecast models were built for “general weather conditions”, as they use all historical weather data to train the models. Meanwhile, forecasting extremes is considered a “secondary task” by the models.

    The authors explored a range of different “lead times” – in other words, how far into the future the model is forecasting. For example, a lead time of two days could mean the model uses the weather conditions at midnight on 1 January to simulate weather conditions at midnight on 3 January.

    The plot below shows how accurately the models forecasted all extreme events (left) and heat extremes (right) under different lead times. This is measured using “root mean square error” – a metric of how accurate a model is, where a lower value indicates lower error and higher accuracy.

    The chart on the left shows how two of the AI models (blue and green) performed better than the physics-based model (black) when forecasting all weather across the year 2020.

    However, the chart on the right illustrates how the physics-based model (black) performed better than all three AI models (blue, red and green) when it came to forecasting heat extremes.

    Accuracy of the AI models
    Accuracy of the AI models (blue, red and green) and the physics-based model (black) at forecasting all weather over 2020 (left) and heat extremes (right) over a range of lead times. This is measured using “root mean square error” (RMSE) – a metric of how accurate a model is, where a lower value indicates lower error and higher accuracy. Source: Zhang et al (2026).

    The authors note that the performance gap between AI and physics-based models is widest for lower lead times, indicating that AI models have greater difficulty making predictions in the near future.

    They find similar results for cold and wind records.

    In addition, the authors find that AI models generally “underpredict” temperature during heat records and “overpredict” during cold records.

    The study finds that the larger the margin that the record is broken by, the less well the AI model predicts the intensity of the event.

    ‘Warning shot’

    Study author Prof Erich Fischer is a climate scientist at ETH Zurich and a Carbon Brief contributing editor. He tells Carbon Brief that the result is “not unexpected”.

    He adds that the analysis is a “warning shot” against replacing traditional models with AI models for weather forecasting “too quickly”.

    The analysis, he continues, is a “warning shot” against replacing traditional models with AI models for weather forecasting “too quickly”.

    AI models are likely to continue to improve, but scientists should “not yet” fully replace traditional forecasting models with AI ones, according to Fischer.

    He explains that accurate forecasts are “most needed” in the runup to potential record-breaking extremes, because they are the trigger for early warning systems that help minimise damages caused by extreme weather.

    Leonardo Olivetti is a PhD student at Uppsala University, who has published work on AI weather forecasting and was not involved in the study.

    He tells Carbon Brief that “many other studies” have identified issues with using AI models for “extremes”, but this paper is novel for its specific focus on extremes.

    Olivetti notes that AI models are already used alongside physics-based models at “some of the major weather forecasting centres around the world”. However, the study results suggest “caution against relying too heavily on these [AI] models”, he says.

    Prof Martin Schultz, a professor in computational earth system science at the University of Cologne who was not involved in the study, tells Carbon Brief that the results of the analysis are “very interesting, but not too surprising”.

    He adds that the study “justifies the continued use of classical numerical weather models in operational forecasts, in spite of their tremendous computational costs”.

    Advances in forecasting

    The field of AI weather forecasting is evolving rapidly.

    Olivetti notes that the three AI models tested in the study are an “older generation” of AI models. In the last two years, newer “probabilistic” forecast models have emerged that “claim to better capture extremes”, he explains.

    The three AI models used in the analysis are “deterministic”, meaning that they only simulate one possible future outcome.

    In contrast, study author Engelke tells Carbon Brief that probabilistic models “create several possible future states of the weather” and are therefore more likely to capture record-breaking extremes.

    Engelke says it is “important” to evaluate the newer generation of models for their ability to forecast weather extremes.

    He adds that this paper has set out a “protocol” for testing the ability of AI models to predict unprecedented extreme events, which he hopes other researchers will go on to use.

    The study says that another “promising direction” for future research is to develop models that combine aspects of traditional, physics-based weather forecasts with AI models.

    Engelke says this approach would be “best of both worlds”, as it would combine the ability of physics-based models to simulate record-breaking weather with the computational efficiency of AI models.

    Dr Kyle Hilburn, a research scientist at Colorado State University, notes that the study does not address extreme rainfall, which he says “presents challenges for both modelling and observing”. This, he says, is an “important” area for future research.

    The post Traditional models still ‘outperform AI’ for extreme weather forecasts appeared first on Carbon Brief.

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