Cross-validation of IASI/MetOp derived tropospheric δD with TES and ground-based FTIR observations
International audience The Infrared Atmospheric Sounding Interferometer (IASI) flying on-board MetOpA and MetOpB is able to capture fine isotopic variations of the HDO to H2O ratio (δD) in the troposphere. Such observations at the high spatio temporal resolution of the sounder are of great interest...
Published in: | Atmospheric Measurement Techniques |
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Main Authors: | , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2015
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Online Access: | https://hal.archives-ouvertes.fr/hal-01082620 https://hal.archives-ouvertes.fr/hal-01082620/document https://hal.archives-ouvertes.fr/hal-01082620/file/amt-8-1447-2015.pdf https://doi.org/10.5194/amt-8-1447-2015 |
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Université de Nantes: HAL-UNIV-NANTES |
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English |
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
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[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] Lacour, Jean-Lionel Clarisse, L. Worden, J. Schneider, M. Barthlott, S. Hase, F. Risi, C. Clerbaux, Cathy Hurtmans, Daniel Coheur, Pierre-François Cross-validation of IASI/MetOp derived tropospheric δD with TES and ground-based FTIR observations |
topic_facet |
[PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
International audience The Infrared Atmospheric Sounding Interferometer (IASI) flying on-board MetOpA and MetOpB is able to capture fine isotopic variations of the HDO to H2O ratio (δD) in the troposphere. Such observations at the high spatio temporal resolution of the sounder are of great interest to improve our understanding of the mechanisms controlling humidity in the troposphere. In this study we aim to empirically assess the validity of our error estimation previously evaluated theoretically. To achieve this, we compare IASI δD retrieved profiles with other available profiles of δD, from the TES infrared sounder onboard AURA and from three ground-based FTIR stations produced within the MUSICA project: the NDACC (Network for the Detection of Atmospheric Composition Change) sites Kiruna and Izana, and the TCCON site Karlsruhe, which in addition to near-infrared TCCON spectra also records mid-infrared spectra. We describe the achievable level of agreement between the different retrievals and show that these theoretical errors are in good agreement with empirical differences. The comparisons are made at different locations from tropical to Arctic latitudes, above sea and above land. Generally IASI and TES are similarly sensitive to δD in the free troposphere which allows to compare their measurements directly. At tropical latitudes where IASI's sensitivity is lower than that of TES, we show that the agreement improves when taking into account the sensitivity of IASI in the TES retrieval. For the comparison IASI-FTIR only direct comparisons are performed because of similar sensitivities. We identify a quasi negligible bias in the free troposphere (−3‰) between IASI retrieved δD with the TES one, which are bias corrected, but an important with the ground-based FTIR reaching −47‰. We also suggest that model-satellite observations comparisons could be optimized with IASI thanks to its high spatial and temporal sampling. |
author2 |
Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique Université libre de Bruxelles (ULB) Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) Institute for Meteorology and Climate Research (IMK) Karlsruhe Institute of Technology (KIT) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Lacour, Jean-Lionel Clarisse, L. Worden, J. Schneider, M. Barthlott, S. Hase, F. Risi, C. Clerbaux, Cathy Hurtmans, Daniel Coheur, Pierre-François |
author_facet |
Lacour, Jean-Lionel Clarisse, L. Worden, J. Schneider, M. Barthlott, S. Hase, F. Risi, C. Clerbaux, Cathy Hurtmans, Daniel Coheur, Pierre-François |
author_sort |
Lacour, Jean-Lionel |
title |
Cross-validation of IASI/MetOp derived tropospheric δD with TES and ground-based FTIR observations |
title_short |
Cross-validation of IASI/MetOp derived tropospheric δD with TES and ground-based FTIR observations |
title_full |
Cross-validation of IASI/MetOp derived tropospheric δD with TES and ground-based FTIR observations |
title_fullStr |
Cross-validation of IASI/MetOp derived tropospheric δD with TES and ground-based FTIR observations |
title_full_unstemmed |
Cross-validation of IASI/MetOp derived tropospheric δD with TES and ground-based FTIR observations |
title_sort |
cross-validation of iasi/metop derived tropospheric δd with tes and ground-based ftir observations |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.archives-ouvertes.fr/hal-01082620 https://hal.archives-ouvertes.fr/hal-01082620/document https://hal.archives-ouvertes.fr/hal-01082620/file/amt-8-1447-2015.pdf https://doi.org/10.5194/amt-8-1447-2015 |
geographic |
Arctic Kiruna |
geographic_facet |
Arctic Kiruna |
genre |
Arctic Kiruna |
genre_facet |
Arctic Kiruna |
op_source |
ISSN: 1867-1381 EISSN: 1867-8548 Atmospheric Measurement Techniques https://hal.archives-ouvertes.fr/hal-01082620 Atmospheric Measurement Techniques, European Geosciences Union, 2015, 8, pp.1447-1466. ⟨10.5194/amt-8-1447-2015⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/amt-8-1447-2015 hal-01082620 https://hal.archives-ouvertes.fr/hal-01082620 https://hal.archives-ouvertes.fr/hal-01082620/document https://hal.archives-ouvertes.fr/hal-01082620/file/amt-8-1447-2015.pdf doi:10.5194/amt-8-1447-2015 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/amt-8-1447-2015 |
container_title |
Atmospheric Measurement Techniques |
container_volume |
8 |
container_issue |
3 |
container_start_page |
1447 |
op_container_end_page |
1466 |
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1766345809116266496 |
spelling |
ftunivnantes:oai:HAL:hal-01082620v1 2023-05-15T15:15:26+02:00 Cross-validation of IASI/MetOp derived tropospheric δD with TES and ground-based FTIR observations Lacour, Jean-Lionel Clarisse, L. Worden, J. Schneider, M. Barthlott, S. Hase, F. Risi, C. Clerbaux, Cathy Hurtmans, Daniel Coheur, Pierre-François Spectroscopie de l'atmosphère, Service de Chimie Quantique et Photophysique Université libre de Bruxelles (ULB) Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) Institute for Meteorology and Climate Research (IMK) Karlsruhe Institute of Technology (KIT) Laboratoire de Météorologie Dynamique (UMR 8539) (LMD) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL) TROPO - LATMOS Laboratoire Atmosphères, Milieux, Observations Spatiales (LATMOS) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) 2015 https://hal.archives-ouvertes.fr/hal-01082620 https://hal.archives-ouvertes.fr/hal-01082620/document https://hal.archives-ouvertes.fr/hal-01082620/file/amt-8-1447-2015.pdf https://doi.org/10.5194/amt-8-1447-2015 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/amt-8-1447-2015 hal-01082620 https://hal.archives-ouvertes.fr/hal-01082620 https://hal.archives-ouvertes.fr/hal-01082620/document https://hal.archives-ouvertes.fr/hal-01082620/file/amt-8-1447-2015.pdf doi:10.5194/amt-8-1447-2015 info:eu-repo/semantics/OpenAccess ISSN: 1867-1381 EISSN: 1867-8548 Atmospheric Measurement Techniques https://hal.archives-ouvertes.fr/hal-01082620 Atmospheric Measurement Techniques, European Geosciences Union, 2015, 8, pp.1447-1466. ⟨10.5194/amt-8-1447-2015⟩ [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2015 ftunivnantes https://doi.org/10.5194/amt-8-1447-2015 2022-10-19T00:21:52Z International audience The Infrared Atmospheric Sounding Interferometer (IASI) flying on-board MetOpA and MetOpB is able to capture fine isotopic variations of the HDO to H2O ratio (δD) in the troposphere. Such observations at the high spatio temporal resolution of the sounder are of great interest to improve our understanding of the mechanisms controlling humidity in the troposphere. In this study we aim to empirically assess the validity of our error estimation previously evaluated theoretically. To achieve this, we compare IASI δD retrieved profiles with other available profiles of δD, from the TES infrared sounder onboard AURA and from three ground-based FTIR stations produced within the MUSICA project: the NDACC (Network for the Detection of Atmospheric Composition Change) sites Kiruna and Izana, and the TCCON site Karlsruhe, which in addition to near-infrared TCCON spectra also records mid-infrared spectra. We describe the achievable level of agreement between the different retrievals and show that these theoretical errors are in good agreement with empirical differences. The comparisons are made at different locations from tropical to Arctic latitudes, above sea and above land. Generally IASI and TES are similarly sensitive to δD in the free troposphere which allows to compare their measurements directly. At tropical latitudes where IASI's sensitivity is lower than that of TES, we show that the agreement improves when taking into account the sensitivity of IASI in the TES retrieval. For the comparison IASI-FTIR only direct comparisons are performed because of similar sensitivities. We identify a quasi negligible bias in the free troposphere (−3‰) between IASI retrieved δD with the TES one, which are bias corrected, but an important with the ground-based FTIR reaching −47‰. We also suggest that model-satellite observations comparisons could be optimized with IASI thanks to its high spatial and temporal sampling. Article in Journal/Newspaper Arctic Kiruna Université de Nantes: HAL-UNIV-NANTES Arctic Kiruna Atmospheric Measurement Techniques 8 3 1447 1466 |