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ABoVE

Vegetation Changes Along Alaskan Rivers

Yukon River riverbank erosion and vegetation colonization

Riverbank erosion and vegetation colonization at the Yukon River 1 study area, located along the Middle Yukon River between Circle and Fort Yukon, Alaska, from 1985-2017.

Research from NASA's ABoVE campaign provides a record of riverbank erosion and vegetation colonization along major Alaskan rivers from 1984 to 2017.

Climate and Productivity of Arctic Tundra

Arctic tudra MaxNDVI biweekly mean

Arctic biweekly NDVI (green bars) and trend (grey bars) for full tundra for 1999-2015. Biweekly trends statistically significant at the 95% level or greater are marked with an asterisk on the x-axis. From Figure 9 (c) Bhatt et al. (2017) (see dataset documentation).

NASA's ABoVE provides standardized data on potential climate drivers for productivity of Arctic tundra vegetation.

Tracking Rain-On-Snow Events Across Alaska

Alaska rain-on-snow frequency and distribution

Annual time series of days with rain-on-snow summed for each 6-km pixel in Alaska.

Researchers with NASA's ABoVE campaign mapped rain-on-snow events across Alaska from 2003 to 2016.

Mapping Surface Waters from ABoVE

Open surface waters for a location in Canada

Orthomosaic imagery taken from a Beechcraft Super King Air B200 aircraft traveling north of the Mackenzie River in the Dehcho Region of Canada.

NASA's 2017 ABoVE airborne campaign provides high-resolution, georeferenced, three-band orthomosaics of digital imagery to validate maps of Arctic surface water extent.

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.

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