This updated one-hour lesson explores the types of atmospheric and surface features that can be observed at night. It describes recent technical improvements in nighttime visible imaging with the VIIRS Day/Night Band on board the Suomi NPP and JPSS satellites, and the lunar phases and other conditions necessary for effective nighttime visible imaging. This lays the foundation for the rest of the lesson, which explores operational uses of nighttime visible observations. These include the detection and monitoring of city lights, tropical cyclones, fog and stratus, polar nights, auroras, fires and smoke, volcanic eruptions, dust storms, air pollution, moon glint, lightning, gas flares, ships and boats, and population/economic geography. The lesson is intended for weather forecasters and other environmental scientists who use nighttime environmental data. Other users, such as those in the transportation industry and economists, may benefit from it as well.
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