EPSCoR - Alaska Adapting to Changing Environments

EPSCoR - Alaska Adapting to Changing Environments

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Evapotranspiration Cycles in a High Latitude Agroecosystem: Potential Warming Role

As the acreages of agricultural lands increase, changes in surface energetics and evapotranspiration (ET) rates may arise consequently affecting regional climate regimes. The objective of this study was to evaluate summertime ET dynamics and surface energy processes in a subarctic agricultural farm in Interior Alaska. The study includes micrometeorological and hydrological data. Results covering the period from June to September 2012 and 2013 indicated consistent energy fractions: LE/Rnet (67%), G/Rnet (6%), H/Rnet (27%) where LE is latent heat flux, Rnet is the surface net radiation, G is ground heat flux and H is the sensible heat flux. Additionally actual surface evapotranspiration from potential evaporation was found to be in the range of 59 to 66%. After comparing these rates with those of most prominent high latitude ecosystems it is argued here that if agroecosystem in high latitudes become an emerging feature in the land-use, the regional surface energy balance will significantly shift in comparison to existing Arctic natural ecosystems.

Data and Resources

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Status: Complete
Type: Project
Data Types: Report
Primary Contact
Sparrow, Elena
Email: ebsparrow@alaska.edu
Primary Agency
EPSCoR - Alaska Adapting to Changing Environments

Funding Agency
EPSCoR - Alaska Adapting to Changing Environments

Other Agencies
National Science Foundation

ISO Topics


Education, Outreach, and Diversity (EOD)

Direct Record Link
  • 01c8ceef3d596f40f05bf496ca00d929
    Published by Lisa
    2016-09-15 13:16:32 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    Updated by Lisa
    2016-09-15 13:16:23 -0800
  • 01c8ceef3d596f40f05bf496ca00d929
    New record created
    2016-09-15 13:15:23 -0800