Arctic

Years of research show that climate change signals are amplified in the Arctic, and that sea ice in this region is sensitive to increases in Arctic warming. Sea ice greatly modifies the exchanges of heat, momentum and mass between the atmosphere and the ocean. So, the timings of the sea ice melt and freeze onsets, ...

A team of researchers led by the University of Minnesota Twin Cities has released four more years of high-resolution imagery data, which has been added to eight years of previous data, to create the most detailed polar region terrain maps ever created. The maps use high-resolution satellite data to show the polar regions in stunning ...

Monitoring vegetation shifts in the Arctic can help scientists understand how the area is changing as the world warms. Already, researchers have documented expansion of boreal forests into the tundra. And at many sites in the region, the tundra is greening up, according to recent satellite observations. NASA postdoctoral fellow Andy Maguire says these vegetation ...