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Modeled WRF-STILT Footprints for Barrow, Alaska

Plot of the footnearfield1 variable for 0.1 degree gridded STILT footprint model output for August 15,1982 near the receptor location at Barrow, Alaska.

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.

ACT-America Flight Data

Flight Altitude and Heading for the B-200 aircraft flight flown on July 11, 2016

Aircraft altitude and heading for the B-200 aircraft during a flight on July 11, 2016 as shown by the ORNL DAAC Airborne Data Visualization.

Conditions recorded by ACT-America flights over Eastern North America are presented in a new dataset.

Peak Greenness in the Canadian Boreal Forest

The Canadian boreal forest study area and the 46 sites used in the analysis mapped on top of AVHRR NDVI trends from Beck and Goetz (2011)

Sites used in this study are shown with AVHRR NDVI trends from Beck and Goetz (2011). Figure from Sulla-Menashe et al. (2018)

A new ABoVE dataset provides a 28-year time series of peak greenness data derived from Landsat 5 TM imagery over the Boreal forest region of Canada.

Impact of Snow Cover on Dall Sheep

Measurement of snowpack characteristics and track sink depths at a Dall sheep (Ovis dalli dalli) track site in March 2017

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.

Permafrost Thaw Depth in Alaska

Locations of thaw depth measurement sites.

Locations of thaw depth measurement sites. Three of the locations are paired unburned-burned sites.

New data from ABoVE provide thaw depth at burned and unburned sites across Alaska.

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