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NORTH AMERICA AT NIGHT, 1993-2003 CHANGES
North America 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 USA and Canada show increases in brightness, and Mexico shows many new lights, reflecting its urbanisation. (KEYSTONE/SCIENCE PHOTO LIBRARY/NOAA)
Instruktionen
COPYRIGHTPFLICHTIG THIS PICTURE MAY NOT BE USED TO STATE OR IMPLY NOAA ENDORSEMENT OF ANY COMPANY OR PRODUCT This image may not be used to state or imply NOAA endorsement of any company or product
Lizenz
Rights Managed
Erstellungsdatum
20060322
Ort
Credit
KEYSTONE
Source
SCIENCE PHOTO LIBRARY SPL
Byline
NOAA
Grösse
3000 x 3000 px
Dateityp
JPEG