QBO effects manifesting in ozone, temperature, and wind profiles
International audience On the basis of ozonesonde records up to 1998 the responses on the equatorial quasi-biennial oscillation (QBO), manifesting in ozone, temperature, and wind (QBO effects) were isolated in the region from the ground to altitudes as high as 35km at 22 stations located in Europe (...
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ftinsu:oai:HAL:hal-00317325v1 2023-11-12T04:06:34+01:00 QBO effects manifesting in ozone, temperature, and wind profiles Sitnov, S. A. A.M.Obukhov Institute of Atmospheric Physics (IAP) Russian Academy of Sciences Moscow (RAS) 2004-04-08 https://hal.science/hal-00317325 https://hal.science/hal-00317325/document https://hal.science/hal-00317325/file/angeo-22-1495-2004.pdf en eng HAL CCSD European Geosciences Union hal-00317325 https://hal.science/hal-00317325 https://hal.science/hal-00317325/document https://hal.science/hal-00317325/file/angeo-22-1495-2004.pdf info:eu-repo/semantics/OpenAccess ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00317325 Annales Geophysicae, 2004, 22 (5), pp.1495-1512 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2004 ftinsu 2023-10-25T16:25:17Z International audience On the basis of ozonesonde records up to 1998 the responses on the equatorial quasi-biennial oscillation (QBO), manifesting in ozone, temperature, and wind (QBO effects) were isolated in the region from the ground to altitudes as high as 35km at 22 stations located in Europe (7), North America (7), Japan (4), Hawaii (1), Australia (2), and Antarctic (1). The vertical structures of the QBO effects of ozone are represented as an alternation of layers of well-developed quasi-biennial signals, whose phases gradually change with height and thin transitional layers of ill-developed signals, whose phases change abruptly with height. The amplitudes of the effects depend on height and reach the maxima of 3?6nbar in the lower stratosphere. At the majority of sites the effects are found to be approximately in phase between 20 and 23km. Two types of the vertical structures of the temperature QBO effects are found. At most of the sites located equatorward of about 50° the stratospheric temperature anomalies are characterized by downward propagation, whereas at sites situated poleward of about 50° they look as column-like structures. Near the tropopause the effects frequently reveal dipole-like structure, when the stratospheric and tropospheric anomalies are of opposite signs. The amplitudes of the effects are in the range of 0.5?1°C. The vertical structures of the QBO effects of horizontal wind components reveal a diversity of patterns. The amplitudes of the QBO effects of the meridional and zonal winds are comparable and lie in the range of 0.5?2m s ?1 . As a rule, the maxima of the effects are noticed slightly below the tropopause, as well as in the middle stratosphere. In general, a statistical assurance of the obtained QBO effects is rather poor. However, a considerable part of them reveal similarity, which can be hardly explained by chance. Furthermore, the results agree with possible physical mechanisms of off-equatorial influence of the QBO, as well as with results of other observational ... Article in Journal/Newspaper Antarc* Antarctic Institut national des sciences de l'Univers: HAL-INSU Antarctic |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Sitnov, S. A. QBO effects manifesting in ozone, temperature, and wind profiles |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience On the basis of ozonesonde records up to 1998 the responses on the equatorial quasi-biennial oscillation (QBO), manifesting in ozone, temperature, and wind (QBO effects) were isolated in the region from the ground to altitudes as high as 35km at 22 stations located in Europe (7), North America (7), Japan (4), Hawaii (1), Australia (2), and Antarctic (1). The vertical structures of the QBO effects of ozone are represented as an alternation of layers of well-developed quasi-biennial signals, whose phases gradually change with height and thin transitional layers of ill-developed signals, whose phases change abruptly with height. The amplitudes of the effects depend on height and reach the maxima of 3?6nbar in the lower stratosphere. At the majority of sites the effects are found to be approximately in phase between 20 and 23km. Two types of the vertical structures of the temperature QBO effects are found. At most of the sites located equatorward of about 50° the stratospheric temperature anomalies are characterized by downward propagation, whereas at sites situated poleward of about 50° they look as column-like structures. Near the tropopause the effects frequently reveal dipole-like structure, when the stratospheric and tropospheric anomalies are of opposite signs. The amplitudes of the effects are in the range of 0.5?1°C. The vertical structures of the QBO effects of horizontal wind components reveal a diversity of patterns. The amplitudes of the QBO effects of the meridional and zonal winds are comparable and lie in the range of 0.5?2m s ?1 . As a rule, the maxima of the effects are noticed slightly below the tropopause, as well as in the middle stratosphere. In general, a statistical assurance of the obtained QBO effects is rather poor. However, a considerable part of them reveal similarity, which can be hardly explained by chance. Furthermore, the results agree with possible physical mechanisms of off-equatorial influence of the QBO, as well as with results of other observational ... |
author2 |
A.M.Obukhov Institute of Atmospheric Physics (IAP) Russian Academy of Sciences Moscow (RAS) |
format |
Article in Journal/Newspaper |
author |
Sitnov, S. A. |
author_facet |
Sitnov, S. A. |
author_sort |
Sitnov, S. A. |
title |
QBO effects manifesting in ozone, temperature, and wind profiles |
title_short |
QBO effects manifesting in ozone, temperature, and wind profiles |
title_full |
QBO effects manifesting in ozone, temperature, and wind profiles |
title_fullStr |
QBO effects manifesting in ozone, temperature, and wind profiles |
title_full_unstemmed |
QBO effects manifesting in ozone, temperature, and wind profiles |
title_sort |
qbo effects manifesting in ozone, temperature, and wind profiles |
publisher |
HAL CCSD |
publishDate |
2004 |
url |
https://hal.science/hal-00317325 https://hal.science/hal-00317325/document https://hal.science/hal-00317325/file/angeo-22-1495-2004.pdf |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0992-7689 EISSN: 1432-0576 Annales Geophysicae https://hal.science/hal-00317325 Annales Geophysicae, 2004, 22 (5), pp.1495-1512 |
op_relation |
hal-00317325 https://hal.science/hal-00317325 https://hal.science/hal-00317325/document https://hal.science/hal-00317325/file/angeo-22-1495-2004.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782327663999844352 |