NASA - National Aeronautics and Space Administration

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Credit for images: NASA/DMSP

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August 15, 2003 - (date of web publication)

Earth's Night Lights

	Image 1

Unlike yesterday, the bustling U.S. East Coast is normally ablaze in nighttime light, with its cities growing closer and closer together. NASA researchers used these images of nighttime lights to study weather around urban areas. Weather stations were classified as urban, near-urban or rural depending on the brightness around them and their records adjusted to account for human influence. These images are actually a composite of hundreds of pictures made by U.S. Defense Meteorological Satellites Program (DMSP). The Nighttime Lights of the World is compiled from the October 1994 - March 1995. Data was collected when moonlight was low.

	Image 2

	Image 3

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