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Artist's view of the Arctic Weather Satellite (AWS) mini constellation. The Arctic Weather Satellite mission will provide frequent coverage of Earth for improved nowcasting and numerical weather prediction. By providing global measurements of atmospheric temperature and humidity with frequent revisit times, the polar-orbiting Arctic Weather Satellite mission will complement MetOp and its counterpart US NOAA Joint Polar Satellite System. This will improve weather forecasts specifically in the Arctic, which has so far been lacking the data needed for short-term forecasts.