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ABoVE

Climate and Dall Sheep Populations

Wrangell-St. Elias National Park & Preserve, Alaska, a study location for the ABoVE field campaign

A herd of Dall sheep ewes and lambs in Wrangell-St. Elias National Park & Preserve, Alaska, a study location for the ABoVE field campaign. (Photo credit: Laura Prugh)

A new dataset from NASA's ABoVE campaign estimates effects of climate on Dall sheep populations throughout Alaska and northwestern Canada.

Maximum NDVI from the ABoVE Campaign

Long-term maximum NDVI measured 2002-2017

Long-term maximum NDVI for the ABoVE study area covering the years 2002-2017.

Annual maximum NDVI estimates from 2002-2017 are available for most of Alaska and the Yukon Territory.

Explore the ABoVE Airborne Campaign from Land

A lake in Fairbanks, Alaska, where scientists planned the ABoVE campaign.

Scientists with the ABoVE campaign study the impacts of warming temperatures on northern lakes, like this one in Fairbanks, Alaska. (Image credit: NASA/Kate Ramsayer)

Field site locations that correspond to the flight tracks of the 2017 ABoVE Airborne Campaign have been published.

High-Resolution Permafrost Maps for Western Alaska

Map of permafrost presence and locations of elevation extremes.

High-resolution elevation maps, based on LiDAR, were used to model the distribution of permafrost across the Y-K Delta of Alaska. The map insets show detail for areas of relative high elevation (left) and low elevation (right).

Scientists with NASA's ABoVE field campaign modeled the distribution of permafrost across the Yukon-Kuskokwim Delta of Alaska.

Feedbacks Between Climate and Alaskan Wildlife

A researcher collects data on snowpack properties in Alaska.

Anne Nolin collects data on snowpack properties as part of a NASA ABoVE study examining how changing snow conditions affect Dall sheep in Wrangell St-Elias National Park, 20 March 2017. (Photo courtesy of Laura Prugh)

Scientists with NASA's ABoVE field campaign are studying links between snowpack properties and Dall sheep populations and movement.

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