This article has been reviewed according to Science X's editorial process and policies. Editors have highlighted the following attributes while ensuring the content's credibility: As climate impacts such as heat waves, floods and fires intensify worldwide, there is an urgent demand for information on how to respond. IIASA researchers and partners have developed a new tool that meets that need, integrating climate drivers, risks and adaptation options in one framework grounded in IPCC science.
It turns authoritative global climate assessments into guidance practitioners can use. The new climate impact taxonomy, developed as part of research published in Nature Climate Change, can help translate the scientific findings of the Intergovernmental Panel on Climate Change (IPCC) into practical information for policymakers, adaptation planners, climate service providers and other decision-makers. The IPCC assessment reports provide a wealth of scientific information, but there has been limited integration between the physical science of climate change and the assessment of its impacts and adaptation options.
Practitioner-oriented products that translate IPCC concepts into actionable information have also been missing. The new taxonomy was created to bridge that gap by providing a shared framework that links measurable climate changes with the risks arising from them and examples of how those risks can be addressed. The tool systematically connects all 35 climatic impact drivers identified by the IPCC, including physical climate conditions such as coastal flooding, drought or extreme heat, with the eight representative key risks, which describe the major climate-related risks to ecosystems, infrastructure, food security, water resources, cities and human well-being.
Each connection is enriched with practical information, including the scale at which impacts occur, the systems affected, examples of adaptation responses, links to mitigation options and references to the relevant IPCC chapters. "This work is less about producing new climate science and more about making existing information actionable. Navigating the IPCC reports can be challenging due to their scope and complexity.
Our taxonomy provides an easier entry point by directly linking measurable climatic impact drivers to specific risks and adaptation responses," explains lead author Michaela Werning, a researcher in the IIASA Energy, Climate, and Environment Program. The researchers highlight several important patterns in the information compiled within the taxonomy. More than half of the combinations of climate hazards and the risks they create primarily play out at regional scales, underscoring that many climate impacts are determined by unique regional conditions.
The analysis also found an almost even split between gradual changes in the climate and extreme events, showing that it is important to build capacity not only to deal with such events but also to plan on longer time scales. In addition, just under half of the climate driver-risk combinations are expected to reach high levels of risk at around 1.5°C of global warming, while a similar proportion reaches high levels of risk beyond 2°C, emphasizing the need for both mitigation and adaptation. The taxonomy also highlights where scientific evidence is still limited, helping identify priorities for future research.
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