World at night, 1993-2003 changes

World at night, 1993-2003 changes

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Credit: NOAA/SCIENCE PHOTO LIBRARY

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Caption: World at night, showing the change in illumination from 1993-2003. This data is based on satellite observations. Lights are colour-coded. Red lights appeared during that period. Orange and yellow areas are regions of high and low intensity lighting respectively that increased in brightness over the ten years. Grey areas are unchanged. Pale blue and dark blue areas are of low and high intensity lighting that decreased in brightness. Very dark blue areas were present in 1993 and had disappeared by 2003. The abundance of red and yellow on the map shows that nights are getting brighter in many areas, especially in the developing world.

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Keywords: 1993, 2003, 21st century, africa, asia, asian, australasia, brightening, change, changes, cities, city, continent, decade, developing, difference, differences, earth, earth observation, earth science, europe, european, from space, global, illuminating, illumination, industrialisation, light, light pollution, lights, many, multiple, new, night, night time, night-time, nighttime, north america, north american, old, satellite image, sciences, south america, south american, time, urbanisation, world, worldwide

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