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Climate change impacts will affect social and ecological systems in complex and broad-ranging ways as technological, economic, social and ecological changes take place across regions, groups and sectors. Many of these impacts, such as impacts on ecological systems, have cascading effects on social, economic and health outcomes. In order to respond to climate change, more vigorous actions are required to mitigate emissions of greenhouse gases (GHGs) and to adapt to unavoidable consequences that are increasing vulnerability around the world.

The Pacific islands region faces increasing environmental and socioeconomic pressures exacerbated by global climate change and climate variability.1 Adaptation to climate change and variability (CCV) is ultimately an issue of sustainable development. Even without climate change, Pacific island countries are already severely affected by climate variability and extremes, and they remain extremely vulnerable to future changes in the regional climate that could increase the risks. Countries in the Pacific have clearly recognized the need to (i) reduce their vulnerability to these increasing risks through adaptation, and (ii) strengthen their human and institutional capacities to assess, plan, and respond to these challenges.