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Regional Methane Flux Estimates Over Alaska

Submitted by ORNL DAAC Staff on 2018-04-16
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Monthly mean CH4 flux estimates for Alaska. Values are centered on the mean measurement date for a given month and the shaded regions are the standard error of the mean (figure from Hartery et al. 2018).

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A new dataset from NASA's Carbon in Arctic Reservoirs Vulnerability Experiment (CARVE) provides gridded methane flux estimates from 2012-2014.

Mapping Shrub Biomass in the Arctic

Submitted by ORNL DAAC Staff on 2018-04-16
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Location of Toolik Lake study area in northern Alaska. Detail view shows three LiDAR collection footprints in pale green. Red crosses indicate locations of shrub harvest areas within the Toolik LiDAR footprint (figure from Greaves et al., 2016).

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LiDAR and orthophotography were used to estimate aboveground shrub biomass near Toolik Lake, AK.

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Mapping wildfires across Alaska and Canada

Submitted by ORNL DAAC Staff on 2017-12-14
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Date of Burning (DoB) was estimated for areas within each fire scar across Alaska and Canada. In this figure, red areas are fire scar locations across central Canada in 2015.

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New data from NASA's ABoVE project provide maps of the date of burning within fire scars across Alaska and Canada from 2001-2015.

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Spring Snowmelt Across Alaska

Submitted by ORNL DAAC Staff on 2017-11-13
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Date of last spring snow cover for portions of Alaska and the Yukon Territory in 2000. Data spatial extent is based on the MODIS sinusoidal projection.

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Data from NASA's ABoVE campaign tracks the last day of spring snow cover for parts of Alaska and the Yukon Territory annually from 2000 through 2016.

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