Published online in Wiley InterScience (www.interscience.wiley.com). DOI
Observations of land surface and snowpack energetics and mass fluxes were made over arctic shrub tundra of varying canopy height and density using radiometers, eddy covariance flux measurements, and snow mass changes from snow surveys of depth and density. Over several years, snow accumulation in th...
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Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.619.2351 http://www.webpages.uidaho.edu/watershed2/Papers/Pomeroy_etal_2006_HP.pdf |
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.619.2351 2023-05-15T15:10:14+02:00 Published online in Wiley InterScience (www.interscience.wiley.com). DOI The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.619.2351 http://www.webpages.uidaho.edu/watershed2/Papers/Pomeroy_etal_2006_HP.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.619.2351 http://www.webpages.uidaho.edu/watershed2/Papers/Pomeroy_etal_2006_HP.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.webpages.uidaho.edu/watershed2/Papers/Pomeroy_etal_2006_HP.pdf text ftciteseerx 2016-01-08T14:53:18Z Observations of land surface and snowpack energetics and mass fluxes were made over arctic shrub tundra of varying canopy height and density using radiometers, eddy covariance flux measurements, and snow mass changes from snow surveys of depth and density. Over several years, snow accumulation in the shrubs was found to be consistently higher than in sparse tundra due to greater retention of snowfall by all shrubs and wind redistribution of snowfall to tall shrubs. Where snow accumulation was highest due to snow redistribution, shrubs often became buried by the end of winter. Three classes of shrub-snow interactions were observed: tall shrubs that were exposed over snow, tall shrubs that were bent over and buried by snow, and short shrubs buried by snow. Tall shrubs buried by snow underwent ‘spring-up ’ during melt. Though spring-up was episodic for a single shrub, over an area it was a progressive emergence from early to mid melt of vegetation that dramatically altered the radiative and aerodynamic properties of the surface. Short shrubs were exposed more rapidly once snow depth declined below shrub height, usually near the end of melt. Net radiation increased with increasing shrub due to the decreased reflectance of shortwave radiation overwhelming the increased longwave emission from relatively warm and dark shrubs. Net radiation to snow under shrubs was much smaller than that over shrubs, but was greater than that to snow with minimal shrub exposure, in this case the difference was due to downward longwave radiation from the canopy exceeding the effect of attenuated Text Arctic Tundra Unknown Arctic |
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ftciteseerx |
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English |
description |
Observations of land surface and snowpack energetics and mass fluxes were made over arctic shrub tundra of varying canopy height and density using radiometers, eddy covariance flux measurements, and snow mass changes from snow surveys of depth and density. Over several years, snow accumulation in the shrubs was found to be consistently higher than in sparse tundra due to greater retention of snowfall by all shrubs and wind redistribution of snowfall to tall shrubs. Where snow accumulation was highest due to snow redistribution, shrubs often became buried by the end of winter. Three classes of shrub-snow interactions were observed: tall shrubs that were exposed over snow, tall shrubs that were bent over and buried by snow, and short shrubs buried by snow. Tall shrubs buried by snow underwent ‘spring-up ’ during melt. Though spring-up was episodic for a single shrub, over an area it was a progressive emergence from early to mid melt of vegetation that dramatically altered the radiative and aerodynamic properties of the surface. Short shrubs were exposed more rapidly once snow depth declined below shrub height, usually near the end of melt. Net radiation increased with increasing shrub due to the decreased reflectance of shortwave radiation overwhelming the increased longwave emission from relatively warm and dark shrubs. Net radiation to snow under shrubs was much smaller than that over shrubs, but was greater than that to snow with minimal shrub exposure, in this case the difference was due to downward longwave radiation from the canopy exceeding the effect of attenuated |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
title |
Published online in Wiley InterScience (www.interscience.wiley.com). DOI |
spellingShingle |
Published online in Wiley InterScience (www.interscience.wiley.com). DOI |
title_short |
Published online in Wiley InterScience (www.interscience.wiley.com). DOI |
title_full |
Published online in Wiley InterScience (www.interscience.wiley.com). DOI |
title_fullStr |
Published online in Wiley InterScience (www.interscience.wiley.com). DOI |
title_full_unstemmed |
Published online in Wiley InterScience (www.interscience.wiley.com). DOI |
title_sort |
published online in wiley interscience (www.interscience.wiley.com). doi |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.619.2351 http://www.webpages.uidaho.edu/watershed2/Papers/Pomeroy_etal_2006_HP.pdf |
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Arctic |
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Arctic |
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Arctic Tundra |
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Arctic Tundra |
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http://www.webpages.uidaho.edu/watershed2/Papers/Pomeroy_etal_2006_HP.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.619.2351 http://www.webpages.uidaho.edu/watershed2/Papers/Pomeroy_etal_2006_HP.pdf |
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