Daily microwave derived surface temperature over Canada/Alaska.
International audience The land surface temperature variation over northern high latitudes in response to the increase in greenhouse gases is challenging because of the lack of meteorological stations. A new method to derive the surface temperature from satellite microwave measurements that improves...
Published in: | Journal of Applied Meteorology and Climatology |
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Main Authors: | , , , |
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2007
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Online Access: | https://hal.science/hal-00297819 https://hal.science/hal-00297819/document https://hal.science/hal-00297819/file/%5B15588432%20-%20Journal%20of%20Applied%20Meteorology%20and%20Climatology%5D%20Daily%20Microwave-Derived%20Surface%20Temperature%20over%20Canada_Alaska.pdf https://doi.org/10.1175/JAM2485.1 |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
passive microwave remote sensing data (SSM/I) surface temperature high latitudes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
spellingShingle |
passive microwave remote sensing data (SSM/I) surface temperature high latitudes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Mialon, Arnaud Royer, Alain Fily, M. Picard, Ghislain Daily microwave derived surface temperature over Canada/Alaska. |
topic_facet |
passive microwave remote sensing data (SSM/I) surface temperature high latitudes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience The land surface temperature variation over northern high latitudes in response to the increase in greenhouse gases is challenging because of the lack of meteorological stations. A new method to derive the surface temperature from satellite microwave measurements that improves the frequency of measurements relative to that of infrared data is presented. The daily Special Sensor Microwave Imager 25 km × 25 km Equal-Area Scalable Earth Grid (EASE-Grid) dataset provided by the National Snow and Ice Data Center in Boulder, Colorado, is processed to derive the surface temperature using the method proposed by Fily et al. A normalization approach based on the 40-yr ECMWF reanalysis (ERA-40; 2.5°) temperature diurnal cycle fitted for each pixel is applied to overcome the time acquisition variation of measurements as well as to interpolate missing data. An adaptive mask for discriminating between ice-free pixels and snow-free pixels is also applied. The resulting database is thus a new consistent hourly series of near-surface air temperatures during the summer (without snow). The mean accuracy is on the order of 2.5–3 K when compared with the synchronous in situ air temperature and different gridded datasets over Canada and Alaska. The trend over the last 10 yr confirms observed climate evolution: an increase in summer surface temperature of +0.09° ± 0.04°C yr−1, at the 90% confidence level, for Canada between 1992 and 2002, whereas a decrease of −0.15° ± 0.05°C yr−1, at the 95% confidence level, is observed for Alaska. Spatial and temporal anomalies show regional impacts of meteorological phenomena such as the El Niño extreme warm summer episode of 1998, the decrease in temperatures in 1992 in Canada following the volcanic eruption of Mount Pinatubo in June 1991, and the strong drought in the prairies in 2001. The annual sum of positive degree-days (thawing index) has been related to the permafrost distribution. The lower values of the derived thawing index (<1400 degree-days) are related ... |
author2 |
Centre d'Applications et de Recherches en TELédétection Sherbrooke (CARTEL) Département de géomatique appliquée Sherbrooke (UdeS) Université de Sherbrooke (UdeS)-Université de Sherbrooke (UdeS) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Mialon, Arnaud Royer, Alain Fily, M. Picard, Ghislain |
author_facet |
Mialon, Arnaud Royer, Alain Fily, M. Picard, Ghislain |
author_sort |
Mialon, Arnaud |
title |
Daily microwave derived surface temperature over Canada/Alaska. |
title_short |
Daily microwave derived surface temperature over Canada/Alaska. |
title_full |
Daily microwave derived surface temperature over Canada/Alaska. |
title_fullStr |
Daily microwave derived surface temperature over Canada/Alaska. |
title_full_unstemmed |
Daily microwave derived surface temperature over Canada/Alaska. |
title_sort |
daily microwave derived surface temperature over canada/alaska. |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00297819 https://hal.science/hal-00297819/document https://hal.science/hal-00297819/file/%5B15588432%20-%20Journal%20of%20Applied%20Meteorology%20and%20Climatology%5D%20Daily%20Microwave-Derived%20Surface%20Temperature%20over%20Canada_Alaska.pdf https://doi.org/10.1175/JAM2485.1 |
genre |
Ice National Snow and Ice Data Center permafrost Alaska |
genre_facet |
Ice National Snow and Ice Data Center permafrost Alaska |
op_source |
ISSN: 1558-8424 EISSN: 1558-8432 Journal of Applied Meteorology and Climatology https://hal.science/hal-00297819 Journal of Applied Meteorology and Climatology, 2007, 46 (5), pp.591-604. ⟨10.1175/JAM2485.1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1175/JAM2485.1 hal-00297819 https://hal.science/hal-00297819 https://hal.science/hal-00297819/document https://hal.science/hal-00297819/file/%5B15588432%20-%20Journal%20of%20Applied%20Meteorology%20and%20Climatology%5D%20Daily%20Microwave-Derived%20Surface%20Temperature%20over%20Canada_Alaska.pdf doi:10.1175/JAM2485.1 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1175/JAM2485.1 |
container_title |
Journal of Applied Meteorology and Climatology |
container_volume |
46 |
container_issue |
5 |
container_start_page |
591 |
op_container_end_page |
604 |
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spelling |
ftinsu:oai:HAL:hal-00297819v1 2024-04-28T08:23:53+00:00 Daily microwave derived surface temperature over Canada/Alaska. Mialon, Arnaud Royer, Alain Fily, M. Picard, Ghislain Centre d'Applications et de Recherches en TELédétection Sherbrooke (CARTEL) Département de géomatique appliquée Sherbrooke (UdeS) Université de Sherbrooke (UdeS)-Université de Sherbrooke (UdeS) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2007-05 https://hal.science/hal-00297819 https://hal.science/hal-00297819/document https://hal.science/hal-00297819/file/%5B15588432%20-%20Journal%20of%20Applied%20Meteorology%20and%20Climatology%5D%20Daily%20Microwave-Derived%20Surface%20Temperature%20over%20Canada_Alaska.pdf https://doi.org/10.1175/JAM2485.1 en eng HAL CCSD American Meteorological Society info:eu-repo/semantics/altIdentifier/doi/10.1175/JAM2485.1 hal-00297819 https://hal.science/hal-00297819 https://hal.science/hal-00297819/document https://hal.science/hal-00297819/file/%5B15588432%20-%20Journal%20of%20Applied%20Meteorology%20and%20Climatology%5D%20Daily%20Microwave-Derived%20Surface%20Temperature%20over%20Canada_Alaska.pdf doi:10.1175/JAM2485.1 info:eu-repo/semantics/OpenAccess ISSN: 1558-8424 EISSN: 1558-8432 Journal of Applied Meteorology and Climatology https://hal.science/hal-00297819 Journal of Applied Meteorology and Climatology, 2007, 46 (5), pp.591-604. ⟨10.1175/JAM2485.1⟩ passive microwave remote sensing data (SSM/I) surface temperature high latitudes [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2007 ftinsu https://doi.org/10.1175/JAM2485.1 2024-04-05T00:38:11Z International audience The land surface temperature variation over northern high latitudes in response to the increase in greenhouse gases is challenging because of the lack of meteorological stations. A new method to derive the surface temperature from satellite microwave measurements that improves the frequency of measurements relative to that of infrared data is presented. The daily Special Sensor Microwave Imager 25 km × 25 km Equal-Area Scalable Earth Grid (EASE-Grid) dataset provided by the National Snow and Ice Data Center in Boulder, Colorado, is processed to derive the surface temperature using the method proposed by Fily et al. A normalization approach based on the 40-yr ECMWF reanalysis (ERA-40; 2.5°) temperature diurnal cycle fitted for each pixel is applied to overcome the time acquisition variation of measurements as well as to interpolate missing data. An adaptive mask for discriminating between ice-free pixels and snow-free pixels is also applied. The resulting database is thus a new consistent hourly series of near-surface air temperatures during the summer (without snow). The mean accuracy is on the order of 2.5–3 K when compared with the synchronous in situ air temperature and different gridded datasets over Canada and Alaska. The trend over the last 10 yr confirms observed climate evolution: an increase in summer surface temperature of +0.09° ± 0.04°C yr−1, at the 90% confidence level, for Canada between 1992 and 2002, whereas a decrease of −0.15° ± 0.05°C yr−1, at the 95% confidence level, is observed for Alaska. Spatial and temporal anomalies show regional impacts of meteorological phenomena such as the El Niño extreme warm summer episode of 1998, the decrease in temperatures in 1992 in Canada following the volcanic eruption of Mount Pinatubo in June 1991, and the strong drought in the prairies in 2001. The annual sum of positive degree-days (thawing index) has been related to the permafrost distribution. The lower values of the derived thawing index (<1400 degree-days) are related ... Article in Journal/Newspaper Ice National Snow and Ice Data Center permafrost Alaska Institut national des sciences de l'Univers: HAL-INSU Journal of Applied Meteorology and Climatology 46 5 591 604 |