In a recent statement, G7 foreign ministers acknowledged the urgent need to “scale up climate finance for adaptation in line with the Glasgow call to at least double the collective provision of adaptation finance from 2019 levels by 2025, in the context of achieving a balance between mitigation and adaptation in the provision of scaled-up financial resources, recalling Article 9, paragraph 4, of the Paris Agreement“.

It has been estimated that adaptation finance was roughly USD 20 billion per year in 2019. A doubling of efforts, as agreed in the Glasgow Climate Pact and reiterated by the G7 ministers, would bring adaptation finance into the vicinity of $40 billion.

At this rate we would fall woefully short of what the latest science from the IPCC and the 2021 Adaptation Gap Report tell us will be needed (Figure 1). Median values for cost estimates stand at USD 127 billion in 2030 and USD 295 billion in 2050. This may sound prohibitively large, but in comparison fossil fuel subsidies stood at USD 440 billion in 2021.

Adaptation finance figure — Comparison of recent studies that estimated developing country adaptation costs in billion USD (in 2005 prices) per year, for panel a) 2030 and panel b) 2050 based on Chapagain et al. (2020) and IPCC. Panel c) shows the currently tracked adaptation finance (2019 values) and pledged doubling by 2025 relative to the lower bounds of estimated adaptation costs from panel a).

Publications

Humid heat exceeds human tolerance limits and causes mass mortality

With critical physiological limits to human heat tolerance drawing ever closer, this Comment highlights the urgent need to limit further climate warming and emphasises the adaptation challenge ahead.

Adapting East and Southern Africa’s livestock to climate change

This paper presents a decision-making framework to help livestock farmers in Eastern and Southern Africa select context-specific adaptation strategies in response to climate change. The framework uses a decision tree to evaluate options based on different climate scenarios and systems, offering tailored guidance for various livestock types and regions.

Calculating the loss and damage finance gap: a scoping and feasibility exercise

At COP28, delegates agreed to operationalise a fund to compensate vulnerable countries coping with loss and damage caused by climate change. This report proposes a method for how to calculate how much finance the Global South needs for loss and damage.

Solar geoengineering: a note to inform discussions on physical climate impacts, risks and governance issues

With international efforts on climate action still not on track to limit warming to 1.5°C, technological fixes that aim to intentionally alter the Earth’s climate, such as solar geoengineering, might seem like appealing options for tackling global warming. But they come with questions in terms of feasibility, impacts and risks, governance and geopolitics, and who may or may not benefit.

Technical guide for the development of long-term low emission development strategies in Africa

This technical guide proposes concrete steps and actions to help African countries develop strong, high-performing Long-Term Low Emission and Climate Resilient Development Strategies that chart a low-emission development path, build resilience, encourage innovation, and create new opportunities for green growth.

How can event attribution science underpin financial decisions on Loss and Damage?

With climate extremes hitting nations across the globe, disproportionately burdening vulnerable developing countries, funding for loss and damage is an acute need. Attribution science can provide useful information for decision makers.

Using existing databases to report on loss and damage in Biennial Transparency Reports under the UNFCCC

Calculating financing needs to respond to loss and damage requires response activities to be costed. However, comprehensive assessments of current and future loss and damage costs are largely unavailable. This briefing proposes using existing databases as proxies in the interim.

Article 6.4 progress update: work of the Supervisory Body on the Paris Agreement Crediting Mechanism

The Article 6.4 mechanism, now known as the Paris Agreement Crediting Mechanism, allows countries to trade reductions in carbon emissions in a manner that goes beyond zero-sum offsetting, to achieve their commitments under the Paris Agreement. This briefing aims to update Small Island Developing States and Least Developed Countries on the standards and procedures that have been adopted by the supervising body (Article 6.4) to inform the design of projects.

A review of loss and damage in the Caribbean (1994 to 2024)

Loss and damage from climate change has been the lived reality of Caribbean small island developing states (SIDS) for decades. Despite efforts to adapt, it is reversing development gains, leaving lasting financial stress, and causing irreparable damage, including the loss of cultural heritage. This report is the first to provide a systematic overview of how Caribbean countries are framing and reporting on loss and damage.

Earth Virtualisation Engines (EVE)

The authors propose creating an international federation of research institutions that improve the quality and accessibility of Earth systems data. The purpose is to empower all people to respond to the immense and urgent challenges posed by climate change.

What good looks like: G7 climate policy 2024 update

This brief outlines seven key policy recommendations for this June’s G7 summit that, if adopted, would demonstrate the ambition and leadership needed to keep the Paris Agreement’s 1.5°C limit in sight.

The 1.5°C limit and risks of overshoot

This briefing looks at what the 1.5°C limit means in terms of adaptation and loss and damage for the most vulnerable countries and regions. It finds that slowing down warming is critical to buy us time to adapt and also to avoid irreversible loss and damage. Even if warming rises above 1.5°C (overshoot) we can bring it down again with ambitious emissions reductions.

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Decarbonisation targets and 1.5℃ pathways

Comment

Current and pledged adaptation finance scrapes the bottom of the barrel