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The research identifies five key areas for ICT application in climate change: observation and monitoring, modeling and simulation, socio-economic analysis, policy analysis and planning, and capacity building. Based on a survey of 18 environmental economists from European countries, the study finds that internet-based services and statistical software are the most widely used and highly valued tools across most research areas. While scientific relevance—specifically increasing exchange in the scientific community—is ranked as the highest priority for ICT, political relevance (interfacing with policy-makers) is ranked higher than economic relevance (reducing research costs). The paper highlights significant barriers to the use of specialized tools, including high costs, data shortages, and complex coding, and calls for increased data accessibility and international collaboration to support developing countries.