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- Title Lena Delta
- Released 24/07/2008 9:56 am
- Copyright ESA
The largest delta in the Arctic, the Lena Delta, is highlighted in this Envisat multitemporal Advanced Synthetic Aperture Radar (ASAR) composite. In the image, red relates to an acquisition on 10 March 2008, green to one on Green 22 October 2007 and blue to one on 13 June 2008. Areas in grey represent the least amount of change between acquisitions.
The delta’s snow-covered tundra is frozen for approximately seven months a year before transforming into fertile wetlands. Tundra wetlands like the Lena Delta are considered major contributors to the global carbon balance and are believed to be highly sensitive to climate change.
Earth observation can assist with quantifying carbon budgets in the vast delta tundra wetlands by helping to validate tundra surface and vegetation unit classification.