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.
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.
Plot of the 0.1 degree gridded STILT footprint model output for August 15, 1982 near the receptor location at Barrow, Alaska. This variable provides 24 hours of surface influence representing the response of the receptor to a unit surface emission (ppm/umol m-2 s-1) of CO2 in each grid cell within a small region close to the measurement location. (From the data file foot1982x08x15x06x00x71.3230Nx156.6114Wx00016.nc)
Land surface influence on atmospheric CO2 and CH4 concentrations in Barrow, Alaska was simulated for 12 selected years from 1982 to 2011 as part of the ABoVE campaign.
Measurement of snowpack characteristics and track sink depths at a Dall sheep (Ovis dalli dalli) track site in March 2017 on Jaeger Mesa, Wrangell St. Elias National Park and Preserve, Alaska (from Sivy et al., 2018).
Research from NASA's ABoVE campaign examines how snow characteristics may affect populations of Dall sheep.