Terrestrial Condition Assessment (TCA) Alaska Drought (Map Service)

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TCA AK drought data represent areas of recent drought stress based on the U.S. Drought Monitor data (https://droughtmonitor.unl.edu/) for two time periods: January 6, 2015 - December 26, 2017 and September 20, 2016 � September 24th, 2019. Using a 30 km grid as a framework over Alaska, the number of drought polygons are intersected for each grid cell, in each drought category, for each time period. This information is then summarized for each time period using the following weighting scheme: (D0 * 1) + (D1 *2) + (D2 * 3) + (D3 * 4) + (D4 * 5). Higher values indicate higher drought intensity and duration.

Terrestrial Condition Assessment (TCA) Recent Drought Impacts (Image Service)

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Terrestrial Condition Assessment (TCA) Alaska Fire Deficit (Image Service)

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Terrestrial Condition Assessment (TCA) Alaska Wildfire Hazard Potential High (Image Service)

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Terrestrial Condition Assessment (TCA) Alaska Road Density (Image Service)

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Terrestrial Condition Assessment (TCA) Climate Exposure Precipitation Percent (Image Service)

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Terrestrial Condition Assessment (TCA) Climate Exposure Temperature (Image Service)

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Terrestrial Condition Assessment (TCA) Climate Exposure Precipitation (Image Service)

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Terrestrial Condition Assessment (TCA) Alaska Climate Exposure Temperature Spring (Map Service)

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The difference in Spring temperature (F) between the reference time period of 1980-2014 and the current time period 2015-2019. Winter months include March, April, and May. Data used are sourced from DAYMET, Daily Surface Weather and Climatological Summaries, Oak Ridge National Laboratory. Data were summarized at the Subsection scale of the USFS National Hierarchy of Ecological Units and applied to the corresponding LTA.

Terrestrial Condition Assessment (TCA) Alaska Uncharacteristic Fire Severity Moderate (Image Service)

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