Credit: NASA/GODDARD SPACE FLIGHT CENTER SCIENTIFIC VISUALIZATION STUDIO/SCIENCE PHOTO LIBRARY

Caption: Arctic sea ice, 1979-2010. The extent of the sea ice varies over the course of a year, being largest just after the winter and smallest after the summer. Comparing the maxima and minima over several years allows trends in ice cover to be followed. Both the minimum and maximum extent of Arctic sea ice have reduced greatly since the middle of the 20th century, providing powerful evidence for global warming due to carbon emissions. Data from the Special Sensor Microwave Imager (SSMI) on a Defense Meteorological Support Program (DMSP) satellite

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Keywords: 1979, 2010, 20th century, 21st century, annual, arctic, arctic circle, climate change, climatological, climatology, coverage, dataset, defence, defense meteorological support program satellite, dmsp, earth, earth observation, environment, environmental science, extent, from space, glaciological, glaciology, global warming, ice cap, ice cover, ice sheet, maxima, maximum, melt, melting, minima, minimum, north pole, northern hemisphere, planet, polar, reduced, reducing, reduction, sea ice, shrinking, shrunk, special sensor microwave imager, ssmi, summer, winter, yearly

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Arctic sea ice, 1979-2010

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