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Arctic

Snowoff Date from 1988-2016

Maps showing snowoff date statistics.

Summary statistics for the snowoff date from 1988-2016 across the study domain: mean (left), standard deviation (middle), and coefficient of variation (right).

Snowoff dates, detected by passive microwave, are available across Alaska, northwestern Canada, and the Russian Far East.

Thaw Slump Expansion in Alaska

Map showing thaw slump in Alaska.

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.

A time series of Landsat-derived maps shows the expansion of a thaw slump in Alaska.

Pre-Fire Ecosystem Classifications in Burned Area

Great Slave Lake

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

ABoVE researchers compiled a map of ecosystem states prior to the 2014 & 2015 fires in the Northwest Territories, Canada.

Long-term Climate Normals for Alaska

Annual Average Maximum Temperature for Alaska

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.

A new dataset provides 30-year climate 'normals' for the last glacial maximum (~18,000 years ago) and the present day in Alaska.

Subsistence Use Areas in Alaska

Subsistence Resource Use Areas

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.

Maps of the search and harvest areas used by residents of Interior Alaska are available.

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