Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000-2010
Global warming will bring about changes in surface energy balance of Arctic ecosystems, which will have implications for ecosystem structure and functioning, as well as for climate system feedback mechanisms. In this study, we present a unique, long-term (2000-2010) record of summer-time energy bala...
Published in: | Tellus B: Chemical and Physical Meteorology |
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2014
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Online Access: | https://lup.lub.lu.se/record/4591737 https://doi.org/10.3402/tellusb.v66.21631 |
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ftulundlup:oai:lup.lub.lu.se:0cadbc0e-2b72-4726-95a0-df6f84425f45 2023-05-15T14:38:16+02:00 Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000-2010 Lund, Magnus Hansen, Birger U. Pedersen, Stine H. Stiegler, Christian Tamstorf, Mikkel P. 2014 https://lup.lub.lu.se/record/4591737 https://doi.org/10.3402/tellusb.v66.21631 eng eng Taylor & Francis https://lup.lub.lu.se/record/4591737 http://dx.doi.org/10.3402/tellusb.v66.21631 wos:000339667300001 scopus:84922352748 Tellus. Series B: Chemical and Physical Meteorology; 66, no 21631 (2014) ISSN: 0280-6509 Physical Geography energy budget energy balance Arctic sensible heat latent heat ground heat net radiation climate change global warming contributiontojournal/article info:eu-repo/semantics/article text 2014 ftulundlup https://doi.org/10.3402/tellusb.v66.21631 2023-02-01T23:33:14Z Global warming will bring about changes in surface energy balance of Arctic ecosystems, which will have implications for ecosystem structure and functioning, as well as for climate system feedback mechanisms. In this study, we present a unique, long-term (2000-2010) record of summer-time energy balance components (net radiation, R-n; sensible heat flux, H; latent heat flux, LE; and soil heat flux, G) from a high Arctic tundra heath in Zackenberg, Northeast Greenland. This area has been subjected to strong summer-time warming with increasing active layer depths (ALD) during the last decades. We observe high energy partitioning into H, low partitioning into LE and high Bowen ratio (beta = H/LE) compared with other Arctic sites, associated with local climatic conditions dominated by onshore winds, slender vegetation with low transpiration activity and relatively dry soils. Surface saturation vapour pressure deficit (D-s) was found to be an important variable controlling within-year surface energy partitioning. Throughout the study period, we observe increasing H/R-n and LE/R-n and decreasing G/R-n and beta, related to increasing ALD and decreasing soil wetness. Thus, changes in summer-time surface energy balance partitioning in Arctic ecosystems may be of importance for the climate system. Article in Journal/Newspaper Arctic Climate change Global warming Greenland Tundra Zackenberg Lund University Publications (LUP) Arctic Greenland Tellus B: Chemical and Physical Meteorology 66 1 21631 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Physical Geography energy budget energy balance Arctic sensible heat latent heat ground heat net radiation climate change global warming |
spellingShingle |
Physical Geography energy budget energy balance Arctic sensible heat latent heat ground heat net radiation climate change global warming Lund, Magnus Hansen, Birger U. Pedersen, Stine H. Stiegler, Christian Tamstorf, Mikkel P. Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000-2010 |
topic_facet |
Physical Geography energy budget energy balance Arctic sensible heat latent heat ground heat net radiation climate change global warming |
description |
Global warming will bring about changes in surface energy balance of Arctic ecosystems, which will have implications for ecosystem structure and functioning, as well as for climate system feedback mechanisms. In this study, we present a unique, long-term (2000-2010) record of summer-time energy balance components (net radiation, R-n; sensible heat flux, H; latent heat flux, LE; and soil heat flux, G) from a high Arctic tundra heath in Zackenberg, Northeast Greenland. This area has been subjected to strong summer-time warming with increasing active layer depths (ALD) during the last decades. We observe high energy partitioning into H, low partitioning into LE and high Bowen ratio (beta = H/LE) compared with other Arctic sites, associated with local climatic conditions dominated by onshore winds, slender vegetation with low transpiration activity and relatively dry soils. Surface saturation vapour pressure deficit (D-s) was found to be an important variable controlling within-year surface energy partitioning. Throughout the study period, we observe increasing H/R-n and LE/R-n and decreasing G/R-n and beta, related to increasing ALD and decreasing soil wetness. Thus, changes in summer-time surface energy balance partitioning in Arctic ecosystems may be of importance for the climate system. |
format |
Article in Journal/Newspaper |
author |
Lund, Magnus Hansen, Birger U. Pedersen, Stine H. Stiegler, Christian Tamstorf, Mikkel P. |
author_facet |
Lund, Magnus Hansen, Birger U. Pedersen, Stine H. Stiegler, Christian Tamstorf, Mikkel P. |
author_sort |
Lund, Magnus |
title |
Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000-2010 |
title_short |
Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000-2010 |
title_full |
Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000-2010 |
title_fullStr |
Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000-2010 |
title_full_unstemmed |
Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000-2010 |
title_sort |
characteristics of summer-time energy exchange in a high arctic tundra heath 2000-2010 |
publisher |
Taylor & Francis |
publishDate |
2014 |
url |
https://lup.lub.lu.se/record/4591737 https://doi.org/10.3402/tellusb.v66.21631 |
geographic |
Arctic Greenland |
geographic_facet |
Arctic Greenland |
genre |
Arctic Climate change Global warming Greenland Tundra Zackenberg |
genre_facet |
Arctic Climate change Global warming Greenland Tundra Zackenberg |
op_source |
Tellus. Series B: Chemical and Physical Meteorology; 66, no 21631 (2014) ISSN: 0280-6509 |
op_relation |
https://lup.lub.lu.se/record/4591737 http://dx.doi.org/10.3402/tellusb.v66.21631 wos:000339667300001 scopus:84922352748 |
op_doi |
https://doi.org/10.3402/tellusb.v66.21631 |
container_title |
Tellus B: Chemical and Physical Meteorology |
container_volume |
66 |
container_issue |
1 |
container_start_page |
21631 |
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1766310384852008960 |