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Title: Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach

Permafrost temperatures are increasing in Alaska due to climate change and in some cases permafrost is thawing and degrading. In areas where degradation has already occurred the effects can be dramatic, resulting in changing ecosystems, carbon release, and damage to infrastructure. However, in many areas we lack baseline data, such as subsurface temperatures, needed to assess future changes and potential risk areas. Besides climate, the physical properties of the vegetation cover and subsurface material have a major influence on the thermal state of permafrost. These properties are often directly related to the type of ecosystem overlaying permafrost. In this paper we demonstrate that classifying the landscape into general ecotypes is an effective way to scale up permafrost thermal data collected from field monitoring sites. Additionally, we find that within some ecotypes the absence of a moss layer is indicative of the absence of near-surface permafrost. As a proof of concept, we used the ground temperature data collected from the field sites to recode an ecotype land cover map into a map of mean annual ground temperature ranges at 1 m depth based on analysis and clustering of observed thermal regimes. In conclusion, the map should be useful for decision makingmore » with respect to land use and understanding how the landscape might change under future climate scenarios.« less
Authors:
 [1] ; ORCiD logo [2] ;  [3]
  1. Univ. of Alaska, Fairbanks, AK (United States)
  2. Univ. of Alaska, Fairbanks, AK (United States); Earth Cryosphere Institute, Tyumen (Russia)
  3. Alaska Ecoscience, Fairbanks, AK (United States)
Publication Date:
Type:
Accepted Manuscript
Journal Name:
The Cryosphere (Online)
Additional Journal Information:
Journal Name: The Cryosphere (Online); Journal Volume: 10; Journal Issue: 5; Journal ID: ISSN 1994-0424
Publisher:
European Geosciences Union
Research Org:
Office of Scientific and Technical Information, Oak Ridge, TN (United States)
Sponsoring Org:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES
OSTI Identifier:
1375913

Cable, William L., Romanovsky, Vladimir E., and Jorgenson, M. Torre. Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach. United States: N. p., Web. doi:10.5194/tc-10-2517-2016.
Cable, William L., Romanovsky, Vladimir E., & Jorgenson, M. Torre. Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach. United States. doi:10.5194/tc-10-2517-2016.
Cable, William L., Romanovsky, Vladimir E., and Jorgenson, M. Torre. 2016. "Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach". United States. doi:10.5194/tc-10-2517-2016. https://www.osti.gov/servlets/purl/1375913.
@article{osti_1375913,
title = {Scaling-up permafrost thermal measurements in western Alaska using an ecotype approach},
author = {Cable, William L. and Romanovsky, Vladimir E. and Jorgenson, M. Torre},
abstractNote = {Permafrost temperatures are increasing in Alaska due to climate change and in some cases permafrost is thawing and degrading. In areas where degradation has already occurred the effects can be dramatic, resulting in changing ecosystems, carbon release, and damage to infrastructure. However, in many areas we lack baseline data, such as subsurface temperatures, needed to assess future changes and potential risk areas. Besides climate, the physical properties of the vegetation cover and subsurface material have a major influence on the thermal state of permafrost. These properties are often directly related to the type of ecosystem overlaying permafrost. In this paper we demonstrate that classifying the landscape into general ecotypes is an effective way to scale up permafrost thermal data collected from field monitoring sites. Additionally, we find that within some ecotypes the absence of a moss layer is indicative of the absence of near-surface permafrost. As a proof of concept, we used the ground temperature data collected from the field sites to recode an ecotype land cover map into a map of mean annual ground temperature ranges at 1 m depth based on analysis and clustering of observed thermal regimes. In conclusion, the map should be useful for decision making with respect to land use and understanding how the landscape might change under future climate scenarios.},
doi = {10.5194/tc-10-2517-2016},
journal = {The Cryosphere (Online)},
number = 5,
volume = 10,
place = {United States},
year = {2016},
month = {10}
}