Arctic

Annual expansion of a thaw slump on the East Fork Chandalar River near the community of Venetie, Alaska, from 2008 through 2017. The erosion time series was created by digitizing data from ESRI base maps and Landsat 5, 7, and 8 images. The eroded area appears to be growing steadily, mostly to the east, with apparent limitation on growth to the north and south.

Ecosystem map for the Great Slave Lake area, Northwest Territories, Canada, for the period 1997-2011.

30-year annual average maximum temperature for Alaska at 60-m resolution for (a) the last glacial maximum period ~18,000 years ago and (b) the modern period 1975-2005.

Combined map of subsistence resource use areas of Interior Alaskan communities with (1) points marking harvest effort locations, (2) polygons indicating harvest effort areas, and (3) lines indicating linear harvesting activity.

AirMOSS radar swaths flown in 2014 and 2015 in Alaska. In situ soil moisture and temperature profile measurements were obtained at the CALM (Circumpolar Active Layer Monitoring) and the UAF GIPL (Geophysical Institute Permafrost Laboratory, University of Alaska Fairbanks) sites and used to validate AirMOSS data products.

A plot photo (#0656) taken at the largest study area 'Toolik' at elevation 765.7 m. The small white object was included in many of the photos as a color reference. The photographer's boots are also often visible, in this photo they are to the lower left of the white object.

Mean daily soil CO2 flux in each month of the non-growing season (NGS) during the baseline period (2003-2018). Gridded estimates are provided at 25-km resolution for the pan-Arctic and Boreal permafrost region.

Land cover (10-class product) for the year 2014 for ABoVE tile BH03V04. The pixel resolution is 30 m and a tile is 180 x 180 km.

Active layer thaw depth was recorded each year during the late summer from 2014 - 2018 at sites including the Farmer's Loop Transect 2 near Fairbanks. (Image Credit: Tom Douglas)

Vegetation communities for the Toolik footprint shown at 1:25,000 scale.