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...
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Stockholm University Press
2014
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ftdoajarticles:oai:doaj.org/article:169d0a40be244543a2e414c01d00b69a 2023-05-15T14:38:15+02:00 Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000–2010 Magnus Lund Birger U. Hansen Stine H. Pedersen Christian Stiegler Mikkel P. Tamstorf 2014-07-01T00:00:00Z https://doi.org/10.3402/tellusb.v66.21631 https://doaj.org/article/169d0a40be244543a2e414c01d00b69a EN eng Stockholm University Press http://www.tellusb.net/index.php/tellusb/article/download/21631/pdf_1 https://doaj.org/toc/1600-0889 1600-0889 doi:10.3402/tellusb.v66.21631 https://doaj.org/article/169d0a40be244543a2e414c01d00b69a Tellus: Series B, Chemical and Physical Meteorology, Vol 66, Iss 0, Pp 1-14 (2014) energy budget energy balance Arctic sensible heat latent heat ground heat net radiation climate change global warming Meteorology. Climatology QC851-999 article 2014 ftdoajarticles https://doi.org/10.3402/tellusb.v66.21631 2022-12-31T00:16:51Z 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 (β=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 β, 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 Directory of Open Access Journals: DOAJ Articles Arctic Greenland Tellus B: Chemical and Physical Meteorology 66 1 21631 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
energy budget energy balance Arctic sensible heat latent heat ground heat net radiation climate change global warming Meteorology. Climatology QC851-999 |
spellingShingle |
energy budget energy balance Arctic sensible heat latent heat ground heat net radiation climate change global warming Meteorology. Climatology QC851-999 Magnus Lund Birger U. Hansen Stine H. Pedersen Christian Stiegler Mikkel P. Tamstorf Characteristics of summer-time energy exchange in a high Arctic tundra heath 2000–2010 |
topic_facet |
energy budget energy balance Arctic sensible heat latent heat ground heat net radiation climate change global warming Meteorology. Climatology QC851-999 |
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 (β=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 β, 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 |
Magnus Lund Birger U. Hansen Stine H. Pedersen Christian Stiegler Mikkel P. Tamstorf |
author_facet |
Magnus Lund Birger U. Hansen Stine H. Pedersen Christian Stiegler Mikkel P. Tamstorf |
author_sort |
Magnus Lund |
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 |
Stockholm University Press |
publishDate |
2014 |
url |
https://doi.org/10.3402/tellusb.v66.21631 https://doaj.org/article/169d0a40be244543a2e414c01d00b69a |
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, Vol 66, Iss 0, Pp 1-14 (2014) |
op_relation |
http://www.tellusb.net/index.php/tellusb/article/download/21631/pdf_1 https://doaj.org/toc/1600-0889 1600-0889 doi:10.3402/tellusb.v66.21631 https://doaj.org/article/169d0a40be244543a2e414c01d00b69a |
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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1766310367130025984 |