Location of the study area northwest of Fairbanks, AK, USA. The map shows (a) yedoma permafrost distribution and (b) yedoma lakes and terrain of the Goldstream Valley. Data sources include Strauss et al. (2016), Alaska LiDAR Dataset (USGS, 2018), Elevation Datasets of Alaska (DGGS Staff, 2013), and Walter Anthony et al. (2020).
Orthophotographs of lakes near of Fairbanks, AK, identify open holes in lake ice that indicate the location of releases of CH4 from thawing permafrost.
Location of 15 lakes surveyed for methane ebullition hotspots (green points) north of Fairbanks, AK, on October 8, 2014. Inset shows detail of Eagle Lake with locations of 43 hotspots (red points) detected by openings in lake ice.
Locations and number of methane ebullition hotspots in frozen lakes in the southern portion of the Goldstream Valley and surroundings near Fairbanks, Alaska.
Spatial distribution of predicted aboveground biomass (AGB) density averaged over 1984-2014 for the ABoVE Core Study Domain. Ecoregions represent the EPA Level 2 Ecoregion boundaries. Source: Wang et al. (2021)
Estimated annual AGB density for live woody species in the ABoVE Core Study Domain from 1984-2014.
Spatial distribution of eight wolf study populations used in an assessment (from 2000-2017) of denning phenology in response to climate signals. The base map shows the day of the year representing the NDVI-derived start of the growing season in 2010.
Eighteen years of annual gray wolf (Canis lupus) denning spatial information and timing across within the NASA ABoVE Core Domain recently published.