The ASSET intercomparison of ozone analyses: method and first results
International audience This paper examines 11 sets of ozone analyses from 7 different data assimilation systems. Two are numerical weather prediction (NWP) systems based on general circulation models (GCMs); the other five use chemistry transport models (CTMs). These systems contain either linearise...
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2006
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Online Access: | https://hal.science/hal-00327911 https://hal.science/hal-00327911/document https://hal.science/hal-00327911/file/acpd-6-4495-2006.pdf |
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Open Polar |
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Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Geer, A. J. Lahoz, W. A. Bekki, Slimane Bormann, N. Errera, Q. Eskes, H. J. Fonteyn, D. Jackson, D. R. Juckes, M. N. Massart, S. Peuch, V.-H. Rharmili, S. Segers, A. The ASSET intercomparison of ozone analyses: method and first results |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience This paper examines 11 sets of ozone analyses from 7 different data assimilation systems. Two are numerical weather prediction (NWP) systems based on general circulation models (GCMs); the other five use chemistry transport models (CTMs). These systems contain either linearised or detailed ozone chemistry, or no chemistry at all. In most analyses, MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) ozone data are assimilated. Two examples assimilate SCIAMACHY (Scanning Imaging Absorption Spectrometer for Atmospheric Chartography) observations. The analyses are compared to independent ozone observations covering the troposphere, stratosphere and lower mesosphere during the period July to November 2003. Through most of the stratosphere (50 hPa to 1 hPa), biases are usually within ±10% and standard deviations less than 10% compared to ozonesondes and HALOE (Halogen Occultation Experiment). Biases and standard deviations are larger in the upper-troposphere/lower-stratosphere, in the troposphere, the mesosphere, and the Antarctic ozone hole region. In these regions, some analyses do substantially better than others, and this is mostly due to differences in the models. At the tropical tropopause, many analyses show positive biases and excessive structure in the ozone fields, likely due to known deficiencies in assimilated tropical wind fields and a degradation in MIPAS data at these levels. In the southern hemisphere ozone hole, only the analyses which correctly model heterogeneous ozone depletion are able to reproduce the near-complete ozone destruction over the pole. In the upper-stratosphere and mesosphere (above 5 hPa), some ozone photochemistry schemes caused large but easily remedied biases. The diurnal cycle of ozone in the mesosphere is not captured, except by the one system that includes a detailed treatment of mesospheric chemistry. In general, similarly good results are obtained no matter what the assimilation method (Kalman filter, three or four dimensional ... |
author2 |
Data Assimilation Research Centre Reading (DARC) University of Reading (UOR) Service d'aéronomie (SA) 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) European Centre for Medium-Range Weather Forecasts (ECMWF) Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB) Royal Netherlands Meteorological Institute (KNMI) United Kingdom Met Office Exeter British Atmospheric Data Centre STFC Rutherford Appleton Laboratory (RAL) Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC) Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS) 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 de Toulouse (UT)-Université de Toulouse (UT)-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 de Toulouse (UT)-Université de Toulouse (UT)-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 |
Geer, A. J. Lahoz, W. A. Bekki, Slimane Bormann, N. Errera, Q. Eskes, H. J. Fonteyn, D. Jackson, D. R. Juckes, M. N. Massart, S. Peuch, V.-H. Rharmili, S. Segers, A. |
author_facet |
Geer, A. J. Lahoz, W. A. Bekki, Slimane Bormann, N. Errera, Q. Eskes, H. J. Fonteyn, D. Jackson, D. R. Juckes, M. N. Massart, S. Peuch, V.-H. Rharmili, S. Segers, A. |
author_sort |
Geer, A. J. |
title |
The ASSET intercomparison of ozone analyses: method and first results |
title_short |
The ASSET intercomparison of ozone analyses: method and first results |
title_full |
The ASSET intercomparison of ozone analyses: method and first results |
title_fullStr |
The ASSET intercomparison of ozone analyses: method and first results |
title_full_unstemmed |
The ASSET intercomparison of ozone analyses: method and first results |
title_sort |
asset intercomparison of ozone analyses: method and first results |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00327911 https://hal.science/hal-00327911/document https://hal.science/hal-00327911/file/acpd-6-4495-2006.pdf |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00327911 Atmospheric Chemistry and Physics Discussions, 2006, 6 (3), pp.4495-4577 |
op_relation |
hal-00327911 https://hal.science/hal-00327911 https://hal.science/hal-00327911/document https://hal.science/hal-00327911/file/acpd-6-4495-2006.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1785542416081616896 |
spelling |
ftuniversailles:oai:HAL:hal-00327911v1 2023-12-17T10:22:03+01:00 The ASSET intercomparison of ozone analyses: method and first results Geer, A. J. Lahoz, W. A. Bekki, Slimane Bormann, N. Errera, Q. Eskes, H. J. Fonteyn, D. Jackson, D. R. Juckes, M. N. Massart, S. Peuch, V.-H. Rharmili, S. Segers, A. Data Assimilation Research Centre Reading (DARC) University of Reading (UOR) Service d'aéronomie (SA) 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) European Centre for Medium-Range Weather Forecasts (ECMWF) Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB) Royal Netherlands Meteorological Institute (KNMI) United Kingdom Met Office Exeter British Atmospheric Data Centre STFC Rutherford Appleton Laboratory (RAL) Science and Technology Facilities Council (STFC)-Science and Technology Facilities Council (STFC) Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique (CERFACS) 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 de Toulouse (UT)-Université de Toulouse (UT)-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 de Toulouse (UT)-Université de Toulouse (UT)-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) 2006-06-07 https://hal.science/hal-00327911 https://hal.science/hal-00327911/document https://hal.science/hal-00327911/file/acpd-6-4495-2006.pdf en eng HAL CCSD European Geosciences Union hal-00327911 https://hal.science/hal-00327911 https://hal.science/hal-00327911/document https://hal.science/hal-00327911/file/acpd-6-4495-2006.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00327911 Atmospheric Chemistry and Physics Discussions, 2006, 6 (3), pp.4495-4577 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2006 ftuniversailles 2023-11-21T23:42:25Z International audience This paper examines 11 sets of ozone analyses from 7 different data assimilation systems. Two are numerical weather prediction (NWP) systems based on general circulation models (GCMs); the other five use chemistry transport models (CTMs). These systems contain either linearised or detailed ozone chemistry, or no chemistry at all. In most analyses, MIPAS (Michelson Interferometer for Passive Atmospheric Sounding) ozone data are assimilated. Two examples assimilate SCIAMACHY (Scanning Imaging Absorption Spectrometer for Atmospheric Chartography) observations. The analyses are compared to independent ozone observations covering the troposphere, stratosphere and lower mesosphere during the period July to November 2003. Through most of the stratosphere (50 hPa to 1 hPa), biases are usually within ±10% and standard deviations less than 10% compared to ozonesondes and HALOE (Halogen Occultation Experiment). Biases and standard deviations are larger in the upper-troposphere/lower-stratosphere, in the troposphere, the mesosphere, and the Antarctic ozone hole region. In these regions, some analyses do substantially better than others, and this is mostly due to differences in the models. At the tropical tropopause, many analyses show positive biases and excessive structure in the ozone fields, likely due to known deficiencies in assimilated tropical wind fields and a degradation in MIPAS data at these levels. In the southern hemisphere ozone hole, only the analyses which correctly model heterogeneous ozone depletion are able to reproduce the near-complete ozone destruction over the pole. In the upper-stratosphere and mesosphere (above 5 hPa), some ozone photochemistry schemes caused large but easily remedied biases. The diurnal cycle of ozone in the mesosphere is not captured, except by the one system that includes a detailed treatment of mesospheric chemistry. In general, similarly good results are obtained no matter what the assimilation method (Kalman filter, three or four dimensional ... Article in Journal/Newspaper Antarc* Antarctic Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ Antarctic The Antarctic |