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National-level governments are directing and funding climate adaptation research, which is essential to informing effective and equitable adaptation practices. We sought to understand how United States (US) federal agencies prioritize, direct, and fund research related to climate adaptation and climate resilience through analyzing climate action plans created in 2021 by 13 agencies who are members of the US Global Change Research Program. We examine: (1) agencies' stated climate adaptation research priorities; (2) how agencies address collaboration, outreach, accessibility, and usability of research outcomes; and (3) agencies' adaptation research funding opportunities. We argue that certain research needs, justice and equity considerations, and interdisciplinary research should be emphasized to a greater degree. While adaptation research capacity and funding opportunities are expanding, they remain inadequate for the scale of research needed. US federal agencies vary in their integration of research as a core component of their climate adaptation plans, but most prioritize research that is relevant and accessible to stakeholders and decision-makers. While all agencies addressed environmental justice, some could more substantially incorporate justice considerations into their climate adaptation research. Adaptation research and strategies should ensure that collaborations are inclusive and sustainable and would benefit from meaningful and respectful collaboration with tribes and Indigenous Peoples, as well as marginalized and under-represented groups. Multidisciplinary research is key to climate adaptation and should be enhanced through increasing funding support for crosscutting programmes. [ABSTRACT FROM AUTHOR]

Coastal communities are among the most vulnerable to climate risks. Despite the negligence of climate policy at the federal level in the United States, subnational governments have taken action to adapt to climate change impacts. Using national-level data on subnational government climate activities, this research examines three aspects of coastal community adaptation actions. First, it examines whether there are differences in climate adaptation activity between coastal and non-coastal communities. It then tests the relative importance of political partisanship, population, perception of climate risk, and awareness of state-level climate planning effort. Lastly, it examines the impact of participation within climate policy networks on the likelihood of a subnational government taking a climate adaptation action. Three types of network partners are examined: those focused on sea-level rise and coastal communities, climate change mitigation, and general environmental organizations. Concern about severe storms, awareness of state plans, and having a network partner focused either on climate mitigation or the environment were found to be statistically significant indicators of climate adaptation action. The paper discusses the importance of understanding the localized context of adaptation within nested governance structures, and how informal policy networks can facilitate learning and innovation across coastal communities. [ABSTRACT FROM AUTHOR]