Arctic ice minimum extent,2012

Numéro d’image : 11639426
Arctic ice minimum extent,2012
Arctic ice minimum extent. Satellite image showing the Arctic polar ice cap at its annual minimum extent on 16th September 2012. The Arctic sea ice (white with blue tint) reaches a minimum in September,at the end of the Arctic summer. This minimal ice area is called the perennial ice cover. The perennial ice has been steadily decreasing since satellites began observing it in 1979,at a rate of about 10 percent per decade. This was the lowest recorded minimum,at just over 3.4 million square kilometres. This decrease is attributed to global warming. Data from the Special Sensor Microwave Imager (SSMI) instrument on the US Air Force's Defense Meteorological Satellite Program (DMSP)
Licence : Droits gérés
Crédit: Science Photo Library / NASA
Taille de l’image : 5760 px × 3831 px
Model Release : Non requis
Property Release : Non requis
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