DAAC Home > Resources > News

News

ABoVE

High-Resolution Permafrost Maps for Western Alaska

Submitted by ORNL DAAC Staff on 2018-09-27
Image Media
Image Media
Caption

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).

Body

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

Tags

Feedbacks Between Climate and Alaskan Wildlife

Submitted by ORNL DAAC Staff on 2018-08-16
Image Media
Image Media
Caption

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)

Body

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

Tags

Wildfire Burn Severity Across Alaska and Canada

Submitted by ORNL DAAC Staff on 2018-07-18
Image Media
Image Media
Caption

The differenced Normalized Burned Ratio (dNBR) for a burn scar from fires in 2015 within ABoVE grid tile Bh05Bv03. A higher dNBR indicates a higher fire severity.

Body

New data from NASA's ABoVE campaign provides a high-resolution record of differenced Normalized Burned Ratio (dNBR) for fires from 1985-2015.

Year-round Data from Alaskan Flux Towers

Submitted by ORNL DAAC Staff on 2018-05-29
Image Media
Image Media
Caption

Three tower sites at Barrow, Alaska: Barrow Environmental Observatory (BEO) tower, Biocomplexity Experiment, South (BES) tower, and the Climate Monitoring and Diagnostics Laboratory (CMDL) tower.

Body

NASA's ABoVE campaign provides year-round CO2, CH4, and meteorology at five sites on Alaska's North Slope.

Tags

Modeled WRF-STILT Footprints for Barrow, Alaska

Submitted by ORNL DAAC Staff on 2018-05-15
Image Media
Image Media
Caption

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)

Body
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.
Tags

Impact of Snow Cover on Dall Sheep

Submitted by ORNL DAAC Staff on 2018-04-18
Image Media
Image Media
Caption

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).

Body

Research from NASA's ABoVE campaign examines how snow characteristics may affect populations of Dall sheep.

Tags