Estimation of surface energy fluxes in the Arctic tundra using the remote sensing thermal-based Two-Source Energy Balance model
The Arctic has become generally a warmer place over the past decades leading to earlier snow melt, permafrost degradation and changing plant communities. Increases in precipitation and local evaporation in the Arctic, known as the acceleration components of the hydrologic cycle, coupled with land co...
Published in: | Hydrology and Earth System Sciences |
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Copernicus Publications
2017
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00010575 2023-05-15T14:38:44+02:00 Estimation of surface energy fluxes in the Arctic tundra using the remote sensing thermal-based Two-Source Energy Balance model Cristóbal, Jordi Prakash, Anupma Anderson, Martha C. Kustas, William P. Euskirchen, Eugénie S. Kane, Douglas L. 2017-03 electronic https://doi.org/10.5194/hess-21-1339-2017 https://noa.gwlb.de/receive/cop_mods_00010575 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010532/hess-21-1339-2017.pdf https://hess.copernicus.org/articles/21/1339/2017/hess-21-1339-2017.pdf eng eng Copernicus Publications Hydrology and Earth System Sciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2100610 -- http://www.hydrol-earth-syst-sci.net/volumes_and_issues.html -- 1607-7938 https://doi.org/10.5194/hess-21-1339-2017 https://noa.gwlb.de/receive/cop_mods_00010575 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010532/hess-21-1339-2017.pdf https://hess.copernicus.org/articles/21/1339/2017/hess-21-1339-2017.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2017 ftnonlinearchiv https://doi.org/10.5194/hess-21-1339-2017 2022-02-08T22:57:00Z The Arctic has become generally a warmer place over the past decades leading to earlier snow melt, permafrost degradation and changing plant communities. Increases in precipitation and local evaporation in the Arctic, known as the acceleration components of the hydrologic cycle, coupled with land cover changes, have resulted in significant changes in the regional surface energy budget. Quantifying spatiotemporal trends in surface energy flux partitioning is key to forecasting ecological responses to changing climate conditions in the Arctic. An extensive local evaluation of the Two-Source Energy Balance model (TSEB) – a remote-sensing-based model using thermal infrared retrievals of land surface temperature – was performed using tower measurements collected over different tundra types in Alaska in all sky conditions over the full growing season from 2008 to 2012. Based on comparisons with flux tower observations, refinements in the original TSEB net radiation, soil heat flux and canopy transpiration parameterizations were identified for Arctic tundra. In particular, a revised method for estimating soil heat flux based on relationships with soil temperature was developed, resulting in significantly improved performance. These refinements result in mean turbulent flux errors generally less than 50 W m−2 at half-hourly time steps, similar to errors typically reported in surface energy balance modeling studies conducted in more temperate climatic regimes. The MODIS leaf area index (LAI) remote sensing product proved to be useful for estimating energy fluxes in Arctic tundra in the absence of field data on the local biomass amount. Model refinements found in this work at the local scale build toward a regional implementation of the TSEB model over Arctic tundra ecosystems, using thermal satellite remote sensing to assess response of surface fluxes to changing vegetation and climate conditions. Article in Journal/Newspaper Arctic permafrost Tundra Alaska Niedersächsisches Online-Archiv NOA Arctic Hydrology and Earth System Sciences 21 3 1339 1358 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Cristóbal, Jordi Prakash, Anupma Anderson, Martha C. Kustas, William P. Euskirchen, Eugénie S. Kane, Douglas L. Estimation of surface energy fluxes in the Arctic tundra using the remote sensing thermal-based Two-Source Energy Balance model |
topic_facet |
article Verlagsveröffentlichung |
description |
The Arctic has become generally a warmer place over the past decades leading to earlier snow melt, permafrost degradation and changing plant communities. Increases in precipitation and local evaporation in the Arctic, known as the acceleration components of the hydrologic cycle, coupled with land cover changes, have resulted in significant changes in the regional surface energy budget. Quantifying spatiotemporal trends in surface energy flux partitioning is key to forecasting ecological responses to changing climate conditions in the Arctic. An extensive local evaluation of the Two-Source Energy Balance model (TSEB) – a remote-sensing-based model using thermal infrared retrievals of land surface temperature – was performed using tower measurements collected over different tundra types in Alaska in all sky conditions over the full growing season from 2008 to 2012. Based on comparisons with flux tower observations, refinements in the original TSEB net radiation, soil heat flux and canopy transpiration parameterizations were identified for Arctic tundra. In particular, a revised method for estimating soil heat flux based on relationships with soil temperature was developed, resulting in significantly improved performance. These refinements result in mean turbulent flux errors generally less than 50 W m−2 at half-hourly time steps, similar to errors typically reported in surface energy balance modeling studies conducted in more temperate climatic regimes. The MODIS leaf area index (LAI) remote sensing product proved to be useful for estimating energy fluxes in Arctic tundra in the absence of field data on the local biomass amount. Model refinements found in this work at the local scale build toward a regional implementation of the TSEB model over Arctic tundra ecosystems, using thermal satellite remote sensing to assess response of surface fluxes to changing vegetation and climate conditions. |
format |
Article in Journal/Newspaper |
author |
Cristóbal, Jordi Prakash, Anupma Anderson, Martha C. Kustas, William P. Euskirchen, Eugénie S. Kane, Douglas L. |
author_facet |
Cristóbal, Jordi Prakash, Anupma Anderson, Martha C. Kustas, William P. Euskirchen, Eugénie S. Kane, Douglas L. |
author_sort |
Cristóbal, Jordi |
title |
Estimation of surface energy fluxes in the Arctic tundra using the remote sensing thermal-based Two-Source Energy Balance model |
title_short |
Estimation of surface energy fluxes in the Arctic tundra using the remote sensing thermal-based Two-Source Energy Balance model |
title_full |
Estimation of surface energy fluxes in the Arctic tundra using the remote sensing thermal-based Two-Source Energy Balance model |
title_fullStr |
Estimation of surface energy fluxes in the Arctic tundra using the remote sensing thermal-based Two-Source Energy Balance model |
title_full_unstemmed |
Estimation of surface energy fluxes in the Arctic tundra using the remote sensing thermal-based Two-Source Energy Balance model |
title_sort |
estimation of surface energy fluxes in the arctic tundra using the remote sensing thermal-based two-source energy balance model |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
https://doi.org/10.5194/hess-21-1339-2017 https://noa.gwlb.de/receive/cop_mods_00010575 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010532/hess-21-1339-2017.pdf https://hess.copernicus.org/articles/21/1339/2017/hess-21-1339-2017.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Tundra Alaska |
genre_facet |
Arctic permafrost Tundra Alaska |
op_relation |
Hydrology and Earth System Sciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2100610 -- http://www.hydrol-earth-syst-sci.net/volumes_and_issues.html -- 1607-7938 https://doi.org/10.5194/hess-21-1339-2017 https://noa.gwlb.de/receive/cop_mods_00010575 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00010532/hess-21-1339-2017.pdf https://hess.copernicus.org/articles/21/1339/2017/hess-21-1339-2017.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/hess-21-1339-2017 |
container_title |
Hydrology and Earth System Sciences |
container_volume |
21 |
container_issue |
3 |
container_start_page |
1339 |
op_container_end_page |
1358 |
_version_ |
1766310768441032704 |