The effect of misleading surface temperature estimations on the sensible heat fluxes at a high Arctic site – the Arctic Turbulence Experiment 2006 on Svalbard (ARCTEX-2006)
The observed rapid climate warming in the Arctic requires improvements in permafrost and carbon cycle monitoring, accomplished by setting up long-term observation sites with high-quality in-situ measurements of turbulent heat, water and carbon fluxes as well as soil physical parameters in Arctic lan...
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Online Access: | https://doi.org/10.5194/acp-10-157-2010 https://www.atmos-chem-phys.net/10/157/2010/ |
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ftcopernicus:oai:publications.copernicus.org:acp1044 2023-05-15T14:40:06+02:00 The effect of misleading surface temperature estimations on the sensible heat fluxes at a high Arctic site – the Arctic Turbulence Experiment 2006 on Svalbard (ARCTEX-2006) Lüers, J. Bareiss, J. 2018-01-15 application/pdf https://doi.org/10.5194/acp-10-157-2010 https://www.atmos-chem-phys.net/10/157/2010/ eng eng doi:10.5194/acp-10-157-2010 https://www.atmos-chem-phys.net/10/157/2010/ eISSN: 1680-7324 Text 2018 ftcopernicus https://doi.org/10.5194/acp-10-157-2010 2019-12-24T09:57:34Z The observed rapid climate warming in the Arctic requires improvements in permafrost and carbon cycle monitoring, accomplished by setting up long-term observation sites with high-quality in-situ measurements of turbulent heat, water and carbon fluxes as well as soil physical parameters in Arctic landscapes. But accurate quantification and well adapted parameterizations of turbulent fluxes in polar environments presents fundamental problems in soil-snow-ice-vegetation-atmosphere interaction studies. One of these problems is the accurate estimation of the surface or aerodynamic temperature T (0) required to force most of the bulk aerodynamic formulae currently used. Results from the Arctic-Turbulence-Experiment (ARCTEX-2006) performed on Svalbard during the winter/spring transition 2006 helped to better understand the physical exchange and transport processes of energy. The existence of an atypical temperature profile close to the surface in the Arctic spring at Svalbard could be proven to be one of the major issues hindering estimation of the appropriate surface temperature. Thus, it is essential to adjust the set-up of measurement systems carefully when applying flux-gradient methods that are commonly used to force atmosphere-ocean/land-ice models. The results of a comparison of different sensible heat-flux parameterizations with direct measurements indicate that the use of a hydrodynamic three-layer temperature-profile model achieves the best fit and reproduces the temporal variability of the surface temperature better than other approaches. Text Arctic Ice permafrost Svalbard Copernicus Publications: E-Journals Arctic Svalbard Atmospheric Chemistry and Physics 10 1 157 168 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
The observed rapid climate warming in the Arctic requires improvements in permafrost and carbon cycle monitoring, accomplished by setting up long-term observation sites with high-quality in-situ measurements of turbulent heat, water and carbon fluxes as well as soil physical parameters in Arctic landscapes. But accurate quantification and well adapted parameterizations of turbulent fluxes in polar environments presents fundamental problems in soil-snow-ice-vegetation-atmosphere interaction studies. One of these problems is the accurate estimation of the surface or aerodynamic temperature T (0) required to force most of the bulk aerodynamic formulae currently used. Results from the Arctic-Turbulence-Experiment (ARCTEX-2006) performed on Svalbard during the winter/spring transition 2006 helped to better understand the physical exchange and transport processes of energy. The existence of an atypical temperature profile close to the surface in the Arctic spring at Svalbard could be proven to be one of the major issues hindering estimation of the appropriate surface temperature. Thus, it is essential to adjust the set-up of measurement systems carefully when applying flux-gradient methods that are commonly used to force atmosphere-ocean/land-ice models. The results of a comparison of different sensible heat-flux parameterizations with direct measurements indicate that the use of a hydrodynamic three-layer temperature-profile model achieves the best fit and reproduces the temporal variability of the surface temperature better than other approaches. |
format |
Text |
author |
Lüers, J. Bareiss, J. |
spellingShingle |
Lüers, J. Bareiss, J. The effect of misleading surface temperature estimations on the sensible heat fluxes at a high Arctic site – the Arctic Turbulence Experiment 2006 on Svalbard (ARCTEX-2006) |
author_facet |
Lüers, J. Bareiss, J. |
author_sort |
Lüers, J. |
title |
The effect of misleading surface temperature estimations on the sensible heat fluxes at a high Arctic site – the Arctic Turbulence Experiment 2006 on Svalbard (ARCTEX-2006) |
title_short |
The effect of misleading surface temperature estimations on the sensible heat fluxes at a high Arctic site – the Arctic Turbulence Experiment 2006 on Svalbard (ARCTEX-2006) |
title_full |
The effect of misleading surface temperature estimations on the sensible heat fluxes at a high Arctic site – the Arctic Turbulence Experiment 2006 on Svalbard (ARCTEX-2006) |
title_fullStr |
The effect of misleading surface temperature estimations on the sensible heat fluxes at a high Arctic site – the Arctic Turbulence Experiment 2006 on Svalbard (ARCTEX-2006) |
title_full_unstemmed |
The effect of misleading surface temperature estimations on the sensible heat fluxes at a high Arctic site – the Arctic Turbulence Experiment 2006 on Svalbard (ARCTEX-2006) |
title_sort |
effect of misleading surface temperature estimations on the sensible heat fluxes at a high arctic site – the arctic turbulence experiment 2006 on svalbard (arctex-2006) |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-10-157-2010 https://www.atmos-chem-phys.net/10/157/2010/ |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Ice permafrost Svalbard |
genre_facet |
Arctic Ice permafrost Svalbard |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-10-157-2010 https://www.atmos-chem-phys.net/10/157/2010/ |
op_doi |
https://doi.org/10.5194/acp-10-157-2010 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
10 |
container_issue |
1 |
container_start_page |
157 |
op_container_end_page |
168 |
_version_ |
1766312013269565440 |