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Burn Severity Index of Canadian Ecoregions

Submitted by ORNL DAAC Staff on 2020-02-17
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Study area included sites burned in 2014 and 2015 in the southeastern portion of the Northwest Territories and northern Alberta of Canada. The study area includes all 2014 and 2015 fires within a radius of approximately 300 km from Great Slave Lake.

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Pre- and post-fire Landsat images were used to classify burn severity of soil organic matter across portions of arctic Canada.

Alaskan Fire Fuel Components

Submitted by ORNL DAAC Staff on 2020-01-30
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Examples of fractional cover distribution in a tundra region near Lake Narvakrak in the Noatak River National Preserve: (a) very high-resolution imagery from Google Earth; (b) fractional cover of woody component; (b) fractional cover of herbaceous component; (d) fractional cover of nonvascular component.

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Maps of three major wildland fire fuel types are available from the Arctic-Boreal Vulnerability Experiment.

MODIS-Derived Snowmelt Timing Maps, Version 2

Submitted by ORNL DAAC Staff on 2020-01-30
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Mean snowmelt Day of Year (DOY) for the years 2001-2018 for North America. The DOY values for snowmelt timing were identified by observing the transition from snow-cover to no-snow for individual MODIS pixels throughout the annual melt period.

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The second version of snowmelt timing maps for North America is available for the period 2001 through 2018.

Arctic Whole Air Samples

Submitted by ORNL DAAC Staff on 2020-01-30
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Arctic-CAP flights consisted of vertical profile maneuvers from near the surface to 6 km altitude around the ABoVE domain each month. Profiles were flown at each of the 25 locations listed across the top of this figure.

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Atmospheric gas concentrations collected during the Arctic Carbon Aircraft Profile (Arctic-CAP) campaigns are now available.

High Latitude Blue Sky Albedo

Submitted by ORNL DAAC Staff on 2020-01-27
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Daily mean shortwave blue sky albedo for February 28, 2000. Blue sky refers to albedo calculated under real-world conditions with a combination of both diffuse and direct lighting based on atmospheric and view-geometry conditions.

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Daily “blue sky” shortwave albedo data were derived from the MODIS bi-directional reflectance distribution function.