Intercomparison of meteorological analyses and trajectories in the Antarctic lower stratosphere with Concordiasi superpressure balloon observations
International audience In this study we compared temperatures and horizontal winds of meteorological analyses in the Antarctic lower stratosphere, a region of the atmosphere that is of major interest regarding chemistry and dynamics of the polar vortex. The study covers the European Centre for Mediu...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , |
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2017
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Online Access: | https://insu.hal.science/insu-03727060 https://insu.hal.science/insu-03727060/document https://insu.hal.science/insu-03727060/file/acp-17-8045-2017.pdf https://doi.org/10.5194/acp-17-8045-2017 |
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ftecoleponts:oai:HAL:insu-03727060v1 |
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Open Polar |
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École des Ponts ParisTech: HAL |
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language |
English |
topic |
[SDU]Sciences of the Universe [physics] [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
spellingShingle |
[SDU]Sciences of the Universe [physics] [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology Hoffmann, Lars Hertzog, Albert Rößler, Thomas Stein, Olaf Wu, Xue Intercomparison of meteorological analyses and trajectories in the Antarctic lower stratosphere with Concordiasi superpressure balloon observations |
topic_facet |
[SDU]Sciences of the Universe [physics] [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology |
description |
International audience In this study we compared temperatures and horizontal winds of meteorological analyses in the Antarctic lower stratosphere, a region of the atmosphere that is of major interest regarding chemistry and dynamics of the polar vortex. The study covers the European Centre for Medium-Range Weather Forecasts (ECMWF) operational analysis, the ERA-Interim reanalysis, the Modern-Era Retrospective analysis for Research and Applications version 1 and 2 (MERRA and MERRA-2), and the National Centers for Environmental Prediction and National Center for Atmospheric Research (NCEP/NCAR) reanalysis. The comparison was performed with respect to long-duration observations from 19 superpressure balloon flights during the Concordiasi field campaign in September 2010 to January 2011. Most of the balloon measurements were conducted at altitudes of 17-18.5 km and latitudes of 60-85° S. We found that large-scale state temperatures of the analyses have a mean precision of 0.5-1.4 K and a warm bias of 0.4-2.1 K with respect to the balloon data. Zonal and meridional winds have a mean precision of 0.9-2.3 m s -1 and a bias below ±0.5 m s -1 . Standard deviations related to small-scale fluctuations due to gravity waves are reproduced at levels of 15-60 % for temperature and 30-60 % for the horizontal winds. Considering the fact that the balloon observations have been assimilated into all analyses, except for NCEP/NCAR, notable differences found here indicate that other observations, the forecast models, and the data assimilation procedures have a significant impact on the analyses as well. We also used the balloon observations to evaluate trajectory calculations with our new Lagrangian transport model Massive-Parallel Trajectory Calculations (MPTRAC), where vertical motions of simulated trajectories were nudged to pressure measurements of the balloons. We found relative horizontal transport deviations of 4-12 % and error growth rates of 60-170 km day -1 for 15-day trajectories. Dispersion simulations revealed some ... |
author2 |
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) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-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) |
format |
Article in Journal/Newspaper |
author |
Hoffmann, Lars Hertzog, Albert Rößler, Thomas Stein, Olaf Wu, Xue |
author_facet |
Hoffmann, Lars Hertzog, Albert Rößler, Thomas Stein, Olaf Wu, Xue |
author_sort |
Hoffmann, Lars |
title |
Intercomparison of meteorological analyses and trajectories in the Antarctic lower stratosphere with Concordiasi superpressure balloon observations |
title_short |
Intercomparison of meteorological analyses and trajectories in the Antarctic lower stratosphere with Concordiasi superpressure balloon observations |
title_full |
Intercomparison of meteorological analyses and trajectories in the Antarctic lower stratosphere with Concordiasi superpressure balloon observations |
title_fullStr |
Intercomparison of meteorological analyses and trajectories in the Antarctic lower stratosphere with Concordiasi superpressure balloon observations |
title_full_unstemmed |
Intercomparison of meteorological analyses and trajectories in the Antarctic lower stratosphere with Concordiasi superpressure balloon observations |
title_sort |
intercomparison of meteorological analyses and trajectories in the antarctic lower stratosphere with concordiasi superpressure balloon observations |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://insu.hal.science/insu-03727060 https://insu.hal.science/insu-03727060/document https://insu.hal.science/insu-03727060/file/acp-17-8045-2017.pdf https://doi.org/10.5194/acp-17-8045-2017 |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-03727060 Atmospheric Chemistry and Physics, 2017, 17, pp.8045-8061. ⟨10.5194/acp-17-8045-2017⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-17-8045-2017 insu-03727060 https://insu.hal.science/insu-03727060 https://insu.hal.science/insu-03727060/document https://insu.hal.science/insu-03727060/file/acp-17-8045-2017.pdf BIBCODE: 2017ACP.17.8045H doi:10.5194/acp-17-8045-2017 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-17-8045-2017 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
17 |
container_issue |
13 |
container_start_page |
8045 |
op_container_end_page |
8061 |
_version_ |
1810492219250966528 |
spelling |
ftecoleponts:oai:HAL:insu-03727060v1 2024-09-15T17:44:35+00:00 Intercomparison of meteorological analyses and trajectories in the Antarctic lower stratosphere with Concordiasi superpressure balloon observations Hoffmann, Lars Hertzog, Albert Rößler, Thomas Stein, Olaf Wu, Xue 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) Institut Polytechnique de Paris (IP Paris)-Institut Polytechnique de Paris (IP Paris)-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) 2017 https://insu.hal.science/insu-03727060 https://insu.hal.science/insu-03727060/document https://insu.hal.science/insu-03727060/file/acp-17-8045-2017.pdf https://doi.org/10.5194/acp-17-8045-2017 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-17-8045-2017 insu-03727060 https://insu.hal.science/insu-03727060 https://insu.hal.science/insu-03727060/document https://insu.hal.science/insu-03727060/file/acp-17-8045-2017.pdf BIBCODE: 2017ACP.17.8045H doi:10.5194/acp-17-8045-2017 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-03727060 Atmospheric Chemistry and Physics, 2017, 17, pp.8045-8061. ⟨10.5194/acp-17-8045-2017⟩ [SDU]Sciences of the Universe [physics] [SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology info:eu-repo/semantics/article Journal articles 2017 ftecoleponts https://doi.org/10.5194/acp-17-8045-2017 2024-08-13T23:47:27Z International audience In this study we compared temperatures and horizontal winds of meteorological analyses in the Antarctic lower stratosphere, a region of the atmosphere that is of major interest regarding chemistry and dynamics of the polar vortex. The study covers the European Centre for Medium-Range Weather Forecasts (ECMWF) operational analysis, the ERA-Interim reanalysis, the Modern-Era Retrospective analysis for Research and Applications version 1 and 2 (MERRA and MERRA-2), and the National Centers for Environmental Prediction and National Center for Atmospheric Research (NCEP/NCAR) reanalysis. The comparison was performed with respect to long-duration observations from 19 superpressure balloon flights during the Concordiasi field campaign in September 2010 to January 2011. Most of the balloon measurements were conducted at altitudes of 17-18.5 km and latitudes of 60-85° S. We found that large-scale state temperatures of the analyses have a mean precision of 0.5-1.4 K and a warm bias of 0.4-2.1 K with respect to the balloon data. Zonal and meridional winds have a mean precision of 0.9-2.3 m s -1 and a bias below ±0.5 m s -1 . Standard deviations related to small-scale fluctuations due to gravity waves are reproduced at levels of 15-60 % for temperature and 30-60 % for the horizontal winds. Considering the fact that the balloon observations have been assimilated into all analyses, except for NCEP/NCAR, notable differences found here indicate that other observations, the forecast models, and the data assimilation procedures have a significant impact on the analyses as well. We also used the balloon observations to evaluate trajectory calculations with our new Lagrangian transport model Massive-Parallel Trajectory Calculations (MPTRAC), where vertical motions of simulated trajectories were nudged to pressure measurements of the balloons. We found relative horizontal transport deviations of 4-12 % and error growth rates of 60-170 km day -1 for 15-day trajectories. Dispersion simulations revealed some ... Article in Journal/Newspaper Antarc* Antarctic École des Ponts ParisTech: HAL Atmospheric Chemistry and Physics 17 13 8045 8061 |