Optimal configuration of a far-infrared radiometer to the study the Arctic winter atmosphere
International audience Several FIR satellite missions are planned for the next decade, with a special interest for the Arctic region. A theoretical study is performed to help about the design of a FIR radiometer, whose configuration in terms of channels number and frequencies is optimized based on i...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | https://hal.science/hal-03080133 https://hal.science/hal-03080133/document https://hal.science/hal-03080133/file/Preprint_Final.pdf https://doi.org/10.1029/2019JD031773 |
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ftunivnantes:oai:HAL:hal-03080133v1 2023-05-15T14:46:34+02:00 Optimal configuration of a far-infrared radiometer to the study the Arctic winter atmosphere Coursol, Laurence Libois, Quentin Gauthier, Pierre Blanchet, Jean-Pierre Centre ESCER Université du Québec à Montréal = University of Québec in Montréal (UQAM) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) 2020-07-27 https://hal.science/hal-03080133 https://hal.science/hal-03080133/document https://hal.science/hal-03080133/file/Preprint_Final.pdf https://doi.org/10.1029/2019JD031773 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2019JD031773 hal-03080133 https://hal.science/hal-03080133 https://hal.science/hal-03080133/document https://hal.science/hal-03080133/file/Preprint_Final.pdf doi:10.1029/2019JD031773 info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-03080133 Journal of Geophysical Research: Atmospheres, 2020, 125 (14), ⟨10.1029/2019JD031773⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.1029/2019JD031773 2023-02-22T04:14:05Z International audience Several FIR satellite missions are planned for the next decade, with a special interest for the Arctic region. A theoretical study is performed to help about the design of a FIR radiometer, whose configuration in terms of channels number and frequencies is optimized based on information content analysis. The problem is cast in a context of vertical column experiments (1D) to determine the optimal configuration of a FIR radiometer to study the Arctic polar night. If only observations of the FIR radiometer were assimilated, the results show that for humidity, 90 % of the total information content is obtained with 4 bands whereas for temperature 10 bands are needed. When the FIR measurements are assimilated on top of those from the Advanced Infrared Sounder (AIRS), the former bring in additional information between the surface and 850 hPa and from 550 hPa to 250 hPa for humidity. Moreover, between 400 hPa and 200 hPa, the FIR radiometer is better than AIRS at reducing the analysis error variance for humidity. This indicates the potential of FIR observations for improving water vapor analysis in the Arctic. Article in Journal/Newspaper Arctic polar night Université de Nantes: HAL-UNIV-NANTES Arctic Journal of Geophysical Research: Atmospheres 125 14 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology Coursol, Laurence Libois, Quentin Gauthier, Pierre Blanchet, Jean-Pierre Optimal configuration of a far-infrared radiometer to the study the Arctic winter atmosphere |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
description |
International audience Several FIR satellite missions are planned for the next decade, with a special interest for the Arctic region. A theoretical study is performed to help about the design of a FIR radiometer, whose configuration in terms of channels number and frequencies is optimized based on information content analysis. The problem is cast in a context of vertical column experiments (1D) to determine the optimal configuration of a FIR radiometer to study the Arctic polar night. If only observations of the FIR radiometer were assimilated, the results show that for humidity, 90 % of the total information content is obtained with 4 bands whereas for temperature 10 bands are needed. When the FIR measurements are assimilated on top of those from the Advanced Infrared Sounder (AIRS), the former bring in additional information between the surface and 850 hPa and from 550 hPa to 250 hPa for humidity. Moreover, between 400 hPa and 200 hPa, the FIR radiometer is better than AIRS at reducing the analysis error variance for humidity. This indicates the potential of FIR observations for improving water vapor analysis in the Arctic. |
author2 |
Centre ESCER Université du Québec à Montréal = University of Québec in Montréal (UQAM) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Coursol, Laurence Libois, Quentin Gauthier, Pierre Blanchet, Jean-Pierre |
author_facet |
Coursol, Laurence Libois, Quentin Gauthier, Pierre Blanchet, Jean-Pierre |
author_sort |
Coursol, Laurence |
title |
Optimal configuration of a far-infrared radiometer to the study the Arctic winter atmosphere |
title_short |
Optimal configuration of a far-infrared radiometer to the study the Arctic winter atmosphere |
title_full |
Optimal configuration of a far-infrared radiometer to the study the Arctic winter atmosphere |
title_fullStr |
Optimal configuration of a far-infrared radiometer to the study the Arctic winter atmosphere |
title_full_unstemmed |
Optimal configuration of a far-infrared radiometer to the study the Arctic winter atmosphere |
title_sort |
optimal configuration of a far-infrared radiometer to the study the arctic winter atmosphere |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-03080133 https://hal.science/hal-03080133/document https://hal.science/hal-03080133/file/Preprint_Final.pdf https://doi.org/10.1029/2019JD031773 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic polar night |
genre_facet |
Arctic polar night |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-03080133 Journal of Geophysical Research: Atmospheres, 2020, 125 (14), ⟨10.1029/2019JD031773⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2019JD031773 hal-03080133 https://hal.science/hal-03080133 https://hal.science/hal-03080133/document https://hal.science/hal-03080133/file/Preprint_Final.pdf doi:10.1029/2019JD031773 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2019JD031773 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
125 |
container_issue |
14 |
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1766317776849338368 |