Age distribution of Arctic sea ice, 1987

Numéro d’image : 12991470
Age distribution of Arctic sea ice, 1987
Age distribution of Arctic sea ice, 1987. Map based on satellite data showing sea ice in the Arctic in August near its minimum level for 1987. The ice is shaded according to its age, which ranges from over four years (white) to less than a year (darker grey). Ice that is present for more than a year is known as multi-year ice or perennial ice. It starts off around 2 metres thick, but can reach a thickness of over nine metres. The decline in perennial ice in the Arctic is an indication of climate change. A key to the shading and the distribution by age is at top right. This data was obtained using a variety of satellite sensors, and is provided by the National Snow and Ice Data Center (NSIDC). For a map displaying the data for 2019, see image C048/5023.
Licence : Droits gérés
Crédit: Science Photo Library / NASA's Scientific Visualization Studio / NASA
Taille de l’image : 4323 px × 2432 px
Model Release : Non requis
Property Release : Non requis
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