Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem
Snow cover is one of the key factors controlling Arctic ecosystem functioning and productivity. In this study we assess the impact of strong variability in snow accumulation during 2 subsequent years (2013–2014) on the land–atmosphere interactions and surface energy exchange in two high-Arctic tundr...
Published in: | The Cryosphere |
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Language: | English |
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2016
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Online Access: | https://doi.org/10.5194/tc-10-1395-2016 http://www.the-cryosphere.net/10/1395/2016/tc-10-1395-2016.pdf https://doaj.org/article/92daf98ef3b544f08e04b214b160ba60 |
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fttriple:oai:gotriple.eu:oai:doaj.org/article:92daf98ef3b544f08e04b214b160ba60 2023-05-15T14:49:20+02:00 Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem C. Stiegler M. Lund T. R. Christensen M. Mastepanov A. Lindroth 2016-07-01 https://doi.org/10.5194/tc-10-1395-2016 http://www.the-cryosphere.net/10/1395/2016/tc-10-1395-2016.pdf https://doaj.org/article/92daf98ef3b544f08e04b214b160ba60 en eng Copernicus Publications 1994-0416 1994-0424 doi:10.5194/tc-10-1395-2016 http://www.the-cryosphere.net/10/1395/2016/tc-10-1395-2016.pdf https://doaj.org/article/92daf98ef3b544f08e04b214b160ba60 undefined The Cryosphere, Vol 10, Iss 4, Pp 1395-1413 (2016) envir geo Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2016 fttriple https://doi.org/10.5194/tc-10-1395-2016 2023-01-22T17:51:21Z Snow cover is one of the key factors controlling Arctic ecosystem functioning and productivity. In this study we assess the impact of strong variability in snow accumulation during 2 subsequent years (2013–2014) on the land–atmosphere interactions and surface energy exchange in two high-Arctic tundra ecosystems (wet fen and dry heath) in Zackenberg, Northeast Greenland. We observed that record-low snow cover during the winter 2012/2013 resulted in a strong response of the heath ecosystem towards low evaporative capacity and substantial surface heat loss by sensible heat fluxes (H) during the subsequent snowmelt period and growing season. Above-average snow accumulation during the winter 2013/2014 promoted summertime ground heat fluxes (G) and latent heat fluxes (LE) at the cost of H. At the fen ecosystem a more muted response of LE, H and G was observed in response to the variability in snow accumulation. Overall, the differences in flux partitioning and in the length of the snowmelt periods and growing seasons during the 2 years had a strong impact on the total accumulation of the surface energy balance components. We suggest that in a changing climate with higher temperature and more precipitation the surface energy balance of this high-Arctic tundra ecosystem may experience a further increase in the variability of energy accumulation, partitioning and redistribution. Article in Journal/Newspaper Arctic Greenland The Cryosphere Tundra Zackenberg Unknown Arctic Greenland The Cryosphere 10 4 1395 1413 |
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English |
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envir geo C. Stiegler M. Lund T. R. Christensen M. Mastepanov A. Lindroth Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem |
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envir geo |
description |
Snow cover is one of the key factors controlling Arctic ecosystem functioning and productivity. In this study we assess the impact of strong variability in snow accumulation during 2 subsequent years (2013–2014) on the land–atmosphere interactions and surface energy exchange in two high-Arctic tundra ecosystems (wet fen and dry heath) in Zackenberg, Northeast Greenland. We observed that record-low snow cover during the winter 2012/2013 resulted in a strong response of the heath ecosystem towards low evaporative capacity and substantial surface heat loss by sensible heat fluxes (H) during the subsequent snowmelt period and growing season. Above-average snow accumulation during the winter 2013/2014 promoted summertime ground heat fluxes (G) and latent heat fluxes (LE) at the cost of H. At the fen ecosystem a more muted response of LE, H and G was observed in response to the variability in snow accumulation. Overall, the differences in flux partitioning and in the length of the snowmelt periods and growing seasons during the 2 years had a strong impact on the total accumulation of the surface energy balance components. We suggest that in a changing climate with higher temperature and more precipitation the surface energy balance of this high-Arctic tundra ecosystem may experience a further increase in the variability of energy accumulation, partitioning and redistribution. |
format |
Article in Journal/Newspaper |
author |
C. Stiegler M. Lund T. R. Christensen M. Mastepanov A. Lindroth |
author_facet |
C. Stiegler M. Lund T. R. Christensen M. Mastepanov A. Lindroth |
author_sort |
C. Stiegler |
title |
Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem |
title_short |
Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem |
title_full |
Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem |
title_fullStr |
Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem |
title_full_unstemmed |
Two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-Arctic tundra ecosystem |
title_sort |
two years with extreme and little snowfall: effects on energy partitioning and surface energy exchange in a high-arctic tundra ecosystem |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/tc-10-1395-2016 http://www.the-cryosphere.net/10/1395/2016/tc-10-1395-2016.pdf https://doaj.org/article/92daf98ef3b544f08e04b214b160ba60 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Greenland The Cryosphere Tundra Zackenberg |
genre_facet |
Arctic Greenland The Cryosphere Tundra Zackenberg |
op_source |
The Cryosphere, Vol 10, Iss 4, Pp 1395-1413 (2016) |
op_relation |
1994-0416 1994-0424 doi:10.5194/tc-10-1395-2016 http://www.the-cryosphere.net/10/1395/2016/tc-10-1395-2016.pdf https://doaj.org/article/92daf98ef3b544f08e04b214b160ba60 |
op_rights |
undefined |
op_doi |
https://doi.org/10.5194/tc-10-1395-2016 |
container_title |
The Cryosphere |
container_volume |
10 |
container_issue |
4 |
container_start_page |
1395 |
op_container_end_page |
1413 |
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1766320390699745280 |