AATSR: Product Development and Intercomparison
Abstract: Models and observations show that the Arctic is experiencing the most rapid changes in global near-surface air temperature. We developed novel EASE-grid Level 3 (L3) land surface temperature (LST) products from Level 2 (L2) AATSR and MODIS data to provide weekly, monthly and annual LST mea...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.296.2932 2023-05-15T14:50:22+02:00 AATSR: Product Development and Intercomparison Pan-arctic L Surface Temperature From Modis Aiman Soliman Claude Duguay William Saunders Sonia Hachem The Pennsylvania State University CiteSeerX Archives 2012 http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.296.2932 http://www.mdpi.com/2072-4292/4/12/3833/pdf/ en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.296.2932 http://www.mdpi.com/2072-4292/4/12/3833/pdf/ Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.mdpi.com/2072-4292/4/12/3833/pdf/ land surface temperature Arctic AATSR MODIS passive microwave atmospheric reanalysisRemote Sens. 2012 4 3834 text 2012 ftciteseerx 2016-01-07T21:48:23Z Abstract: Models and observations show that the Arctic is experiencing the most rapid changes in global near-surface air temperature. We developed novel EASE-grid Level 3 (L3) land surface temperature (LST) products from Level 2 (L2) AATSR and MODIS data to provide weekly, monthly and annual LST means over the pan-Arctic region at various grid resolutions (1–25 km) for the past decade (2000–2010). In this paper, we provide: (1) a review of previous validation of MODIS/AATSR L2; (2) a description of the processing chain of L3 products; (3) an assessment of the 25 km products uncertainty, and; (4) a quantification of the bias introduced by over-representing clear-sky days in MODIS L3 products. In addition, we generated uncertainty maps by comparing L3 products with LST from passive microwave sensors (AMSR-E and SSM/I) and the North American Regional Reanalysis (NARR). Results show a close correspondence between MODIS and AATSR monthly products with a mean-difference (MD) of −1.1 K. Comparing L3 products with NARR indicates a close agreement in summer and a systematic bias in winter, which is entirely negative with respect to MODIS L3 (MD: −3.6, Min: −6.8, Max: −1 K). Comparing monthly averaged MODIS L3 to NARR clear-sky to quantify over-representing clear-sky days indicates a decrease of winter and an increase of summer difference compared to NARR all-sky. Finally, we provide suggestions to improve LST retrieval over Arctic regions. Text Arctic Unknown Arctic |
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land surface temperature Arctic AATSR MODIS passive microwave atmospheric reanalysisRemote Sens. 2012 4 3834 |
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land surface temperature Arctic AATSR MODIS passive microwave atmospheric reanalysisRemote Sens. 2012 4 3834 Pan-arctic L Surface Temperature From Modis Aiman Soliman Claude Duguay William Saunders Sonia Hachem AATSR: Product Development and Intercomparison |
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land surface temperature Arctic AATSR MODIS passive microwave atmospheric reanalysisRemote Sens. 2012 4 3834 |
description |
Abstract: Models and observations show that the Arctic is experiencing the most rapid changes in global near-surface air temperature. We developed novel EASE-grid Level 3 (L3) land surface temperature (LST) products from Level 2 (L2) AATSR and MODIS data to provide weekly, monthly and annual LST means over the pan-Arctic region at various grid resolutions (1–25 km) for the past decade (2000–2010). In this paper, we provide: (1) a review of previous validation of MODIS/AATSR L2; (2) a description of the processing chain of L3 products; (3) an assessment of the 25 km products uncertainty, and; (4) a quantification of the bias introduced by over-representing clear-sky days in MODIS L3 products. In addition, we generated uncertainty maps by comparing L3 products with LST from passive microwave sensors (AMSR-E and SSM/I) and the North American Regional Reanalysis (NARR). Results show a close correspondence between MODIS and AATSR monthly products with a mean-difference (MD) of −1.1 K. Comparing L3 products with NARR indicates a close agreement in summer and a systematic bias in winter, which is entirely negative with respect to MODIS L3 (MD: −3.6, Min: −6.8, Max: −1 K). Comparing monthly averaged MODIS L3 to NARR clear-sky to quantify over-representing clear-sky days indicates a decrease of winter and an increase of summer difference compared to NARR all-sky. Finally, we provide suggestions to improve LST retrieval over Arctic regions. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Pan-arctic L Surface Temperature From Modis Aiman Soliman Claude Duguay William Saunders Sonia Hachem |
author_facet |
Pan-arctic L Surface Temperature From Modis Aiman Soliman Claude Duguay William Saunders Sonia Hachem |
author_sort |
Pan-arctic L |
title |
AATSR: Product Development and Intercomparison |
title_short |
AATSR: Product Development and Intercomparison |
title_full |
AATSR: Product Development and Intercomparison |
title_fullStr |
AATSR: Product Development and Intercomparison |
title_full_unstemmed |
AATSR: Product Development and Intercomparison |
title_sort |
aatsr: product development and intercomparison |
publishDate |
2012 |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.296.2932 http://www.mdpi.com/2072-4292/4/12/3833/pdf/ |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
http://www.mdpi.com/2072-4292/4/12/3833/pdf/ |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.296.2932 http://www.mdpi.com/2072-4292/4/12/3833/pdf/ |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766321405633232896 |