The Arctic Sciences Section of the National Science Foundation solicits proposals for research to enhance our understanding of the Arctic, from advancing fundamental disciplinary understanding of important Arctic processes to complex interdisciplinary studies of couplings among social, biological, physical, and geochemical components of the Arctic system to the changing connections between the Arctic and lower latitudes. Of special interest is research focused on understanding processes relevant to social and environmental change. All proposals should discuss explicitly how their results would contribute to increasing our understanding of the Arctic region or its interaction with global systems. Proposals accepted anytime.