Methodology for deriving key risks and developing impact chains for climate risk assessment based on the Korea Climate Crisis Adaptation Information Taxonomy (KADT)

As the impacts of climate change increase, their analysis has become essential. In South Korea, efforts are underway to establish national climate risk assessments and adaptation measures. However, there is a lack of comprehensive analysis of the causal relationships behind these risks and their impacts on other sectors and risks. This study proposes a methodology based on the Korea Climate Crisis Adaptation Information Taxonomy, KADT, to derive impacts, aiming to enhance systematic management of national climate risks and their integration with adaptation policies. Using the methodology from the Climate Risk Sourcebook, the study derives key risks and impact chains for four sectors (water environment; agriculture, livestock and food; forestry; marine and fisheries) based on KADT. Key risks are selected through analysis of extreme climate projections and climate disaster impact scales, while subsystems are established using KADT components to develop the impact chains. Finally, impact chains are created for both intra-sectoral and inter-sectoral key risks. These impact chains (i) provide a systematic basis for deriving the data required for quantitative risk assessment, (ii) facilitate the identification of entry points for adaptation options, making it easier to integrate risk management with adaptation plans, and (iii) enable the development of comprehensive policies that address multiple risks simultaneously. Future research utilizing KADT, involving diverse experts and stakeholders to identify additional factors such as vulnerabilities, is expected to further enhance the utility of KADT.