Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF and NCEP operational models
International audience Radiosonde temperature profiles from Belgrano (78° S) and other Antarctic stations have been compared with European Centre for Medium-Range Weather Forecasting (ECMWF) and National Centers for Environmental Prediction (NCEP) operational analyses during the winter of 2003. Resu...
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ftccsdartic:oai:HAL:hal-00296124v1 2024-02-11T09:56:38+01:00 Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF and NCEP operational models Parrondo, M. C. Yela, M. Gil, M. von Der Gathen, P. Ochoa, H. Instituto Nacional de Técnica Aeroespacial (INTA) Department of Bentho-pelagic processes Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association-Helmholtz-Gemeinschaft = Helmholtz Association Dirección Nacional de Antártico 2007-01-24 https://hal.science/hal-00296124 https://hal.science/hal-00296124/document https://hal.science/hal-00296124/file/acp-7-435-2007.pdf en eng HAL CCSD European Geosciences Union hal-00296124 https://hal.science/hal-00296124 https://hal.science/hal-00296124/document https://hal.science/hal-00296124/file/acp-7-435-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00296124 Atmospheric Chemistry and Physics, 2007, 7 (2), pp.435-441 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2007 ftccsdartic 2024-01-21T01:00:56Z International audience Radiosonde temperature profiles from Belgrano (78° S) and other Antarctic stations have been compared with European Centre for Medium-Range Weather Forecasting (ECMWF) and National Centers for Environmental Prediction (NCEP) operational analyses during the winter of 2003. Results show good agreement between radiosondes and NCEP and a bias in the ECMWF model which is height and temperature dependent, being up to 3°C too cold at 80 and 25?30 hPa, and hence resulting in an overestimation of the predicted potential PSC areas. Here we show the results of the comparison and discuss the potential implications that this bias might have on the ozone depletion computed by Chemical Transport Models based on ECMWF temperature fields, after rejecting the possibility of a bias in the sondes at extreme low temperatures. Article in Journal/Newspaper Antarc* Antarctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Belgrano ENVELOPE(-64.967,-64.967,-65.150,-65.150) The Antarctic |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Parrondo, M. C. Yela, M. Gil, M. von Der Gathen, P. Ochoa, H. Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF and NCEP operational models |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Radiosonde temperature profiles from Belgrano (78° S) and other Antarctic stations have been compared with European Centre for Medium-Range Weather Forecasting (ECMWF) and National Centers for Environmental Prediction (NCEP) operational analyses during the winter of 2003. Results show good agreement between radiosondes and NCEP and a bias in the ECMWF model which is height and temperature dependent, being up to 3°C too cold at 80 and 25?30 hPa, and hence resulting in an overestimation of the predicted potential PSC areas. Here we show the results of the comparison and discuss the potential implications that this bias might have on the ozone depletion computed by Chemical Transport Models based on ECMWF temperature fields, after rejecting the possibility of a bias in the sondes at extreme low temperatures. |
author2 |
Instituto Nacional de Técnica Aeroespacial (INTA) Department of Bentho-pelagic processes Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung = Alfred Wegener Institute for Polar and Marine Research = Institut Alfred-Wegener pour la recherche polaire et marine (AWI) Helmholtz-Gemeinschaft = Helmholtz Association-Helmholtz-Gemeinschaft = Helmholtz Association Dirección Nacional de Antártico |
format |
Article in Journal/Newspaper |
author |
Parrondo, M. C. Yela, M. Gil, M. von Der Gathen, P. Ochoa, H. |
author_facet |
Parrondo, M. C. Yela, M. Gil, M. von Der Gathen, P. Ochoa, H. |
author_sort |
Parrondo, M. C. |
title |
Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF and NCEP operational models |
title_short |
Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF and NCEP operational models |
title_full |
Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF and NCEP operational models |
title_fullStr |
Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF and NCEP operational models |
title_full_unstemmed |
Mid-winter lower stratosphere temperatures in the Antarctic vortex: comparison between observations and ECMWF and NCEP operational models |
title_sort |
mid-winter lower stratosphere temperatures in the antarctic vortex: comparison between observations and ecmwf and ncep operational models |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00296124 https://hal.science/hal-00296124/document https://hal.science/hal-00296124/file/acp-7-435-2007.pdf |
long_lat |
ENVELOPE(-64.967,-64.967,-65.150,-65.150) |
geographic |
Antarctic Belgrano The Antarctic |
geographic_facet |
Antarctic Belgrano The Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00296124 Atmospheric Chemistry and Physics, 2007, 7 (2), pp.435-441 |
op_relation |
hal-00296124 https://hal.science/hal-00296124 https://hal.science/hal-00296124/document https://hal.science/hal-00296124/file/acp-7-435-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1790604654290141184 |