Researchers collecting data on vegetation and biophysical characteristics at a study site in Northwest Territories of Canada that was burned by wildfires in 2014-2015.
Total burned area (a), total carbon emissions (b), mean combustion (c), and mean burn depth (d) between 2001-2019 aggregated to a 70 km grid. Note that burned area (a) covers all of Alaska and Canada whereas all other metrics cover the ABoVE extended domain.
The wetland vegetation community classification for the Peace-Athabasca Delta, Alberta, Canada created from AVIRIS-NG derived features.
Schematic of FluoWat leaf clip operation for measuring leaf reflectance, transmittance, and upward and downward fluorescence (SIF). The leaf is placed in the clip and illuminated through the open port (A). Reflected and transmitted radiance are measured by attaching a fiber optic cable from the spectrometer to the top or bottom of the clip. To measure fluorescence spectra a low pass filter is placed across the illumination port (B). Two filters are applied in sequence, they block incident wavelengths above 650 nm and 700 nm, therefore any radiance measured in the longer wavelengths can come only from fluorescence.
Change in greenness of boreal forest across the northern hemisphere between 2000 to 2019, estimated from an ensemble of vegetation indices derived from Landsat imagery.
International Tundra EXperiment (ITEX) Barrow study site.
Changes in simulated permafrost dynamics. Simulated cumulative changes in (A and B) permafrost area for active layer thickness (ALT) less than 3 m from 2010-2299 and (C and D) the sensitivity of simulated changes in permafrost area to changes in mean annual air temperature for RCP4.5 (left column) and RCP8.5 (right column) model projections.
Locations of field sites in Alaska, U.S.
Classified wetland type maps for the Slave River Delta (SRD) and Peace-Athabasca Delta (PAD), Canada circa 2007 and circa 2017.
TVPRM net ecosystem exchange: Surface upward mass flux of carbon dioxide expressed as carbon due to emissions from natural sources for 2015-07-01 (left) and 2015-10-01 (right).