Global distribution of C T 2 at altitudes 30–50 km from space-borne observations of stellar scintillation
Locally isotropic turbulence in the stratosphere consists of isolated sporadic patches with random values of temperature structure characteristic C T 2 . Stellar scintillations measured aboard GOMOS/ENVISAT through the Earth atmosphere provided the first global distribution of the effective characte...
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Online Access: | https://hal.science/hal-00201348 https://hal.science/hal-00201348/document https://hal.science/hal-00201348/file/Gurvich_et_al-2007-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2007GL031134 |
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ftsorbonneuniv:oai:HAL:hal-00201348v1 2023-06-11T04:16:11+02:00 Global distribution of C T 2 at altitudes 30–50 km from space-borne observations of stellar scintillation S. Gurvich, Alexandre Sofieva, Viktoria F. Dalaudier, Francis A.M.Obukhov Institute of Atmospheric Physics (IAP) Russian Academy of Sciences Moscow (RAS) Finnish Meteorological Institute (FMI) 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) 2007 https://hal.science/hal-00201348 https://hal.science/hal-00201348/document https://hal.science/hal-00201348/file/Gurvich_et_al-2007-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2007GL031134 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GL031134 hal-00201348 https://hal.science/hal-00201348 https://hal.science/hal-00201348/document https://hal.science/hal-00201348/file/Gurvich_et_al-2007-Geophysical_Research_Letters.pdf doi:10.1029/2007GL031134 info:eu-repo/semantics/OpenAccess ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00201348 Geophysical Research Letters, 2007, 34 (24), pp.L24813. ⟨10.1029/2007GL031134⟩ turbulence stellar scintillation GOMOS/Envisat [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] info:eu-repo/semantics/article Journal articles 2007 ftsorbonneuniv https://doi.org/10.1029/2007GL031134 2023-05-30T00:21:45Z Locally isotropic turbulence in the stratosphere consists of isolated sporadic patches with random values of temperature structure characteristic C T 2 . Stellar scintillations measured aboard GOMOS/ENVISAT through the Earth atmosphere provided the first global distribution of the effective characteristic C 2 averaged along sounding ray. For zonal mean, the largest values are achieved in winter polar regions. This observed intense turbulence is probably related to the polar night jet. Relatively weak turbulence is observed at low latitudes. Turbulence intensity map is shown for altitude 42 km in the latitude band ±35°, where the maxima follow the sub-solar latitude, with enhancements located mainly over continents. Turbulence enhancements are not related with orography. Despite a noticeable correlation with typical regions of deep convection, the overall distribution of C T,eft 2 displays a more complicated structure. Analyzed data suggest that the main turbulence sources, at altitudes 〜40 km, are instabilities of stratospheric circulation and gravity wave breaking. Article in Journal/Newspaper polar night HAL Sorbonne Université Geophysical Research Letters 34 24 |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
turbulence stellar scintillation GOMOS/Envisat [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
spellingShingle |
turbulence stellar scintillation GOMOS/Envisat [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] S. Gurvich, Alexandre Sofieva, Viktoria F. Dalaudier, Francis Global distribution of C T 2 at altitudes 30–50 km from space-borne observations of stellar scintillation |
topic_facet |
turbulence stellar scintillation GOMOS/Envisat [PHYS.PHYS.PHYS-AO-PH]Physics [physics]/Physics [physics]/Atmospheric and Oceanic Physics [physics.ao-ph] |
description |
Locally isotropic turbulence in the stratosphere consists of isolated sporadic patches with random values of temperature structure characteristic C T 2 . Stellar scintillations measured aboard GOMOS/ENVISAT through the Earth atmosphere provided the first global distribution of the effective characteristic C 2 averaged along sounding ray. For zonal mean, the largest values are achieved in winter polar regions. This observed intense turbulence is probably related to the polar night jet. Relatively weak turbulence is observed at low latitudes. Turbulence intensity map is shown for altitude 42 km in the latitude band ±35°, where the maxima follow the sub-solar latitude, with enhancements located mainly over continents. Turbulence enhancements are not related with orography. Despite a noticeable correlation with typical regions of deep convection, the overall distribution of C T,eft 2 displays a more complicated structure. Analyzed data suggest that the main turbulence sources, at altitudes 〜40 km, are instabilities of stratospheric circulation and gravity wave breaking. |
author2 |
A.M.Obukhov Institute of Atmospheric Physics (IAP) Russian Academy of Sciences Moscow (RAS) Finnish Meteorological Institute (FMI) 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) |
format |
Article in Journal/Newspaper |
author |
S. Gurvich, Alexandre Sofieva, Viktoria F. Dalaudier, Francis |
author_facet |
S. Gurvich, Alexandre Sofieva, Viktoria F. Dalaudier, Francis |
author_sort |
S. Gurvich, Alexandre |
title |
Global distribution of C T 2 at altitudes 30–50 km from space-borne observations of stellar scintillation |
title_short |
Global distribution of C T 2 at altitudes 30–50 km from space-borne observations of stellar scintillation |
title_full |
Global distribution of C T 2 at altitudes 30–50 km from space-borne observations of stellar scintillation |
title_fullStr |
Global distribution of C T 2 at altitudes 30–50 km from space-borne observations of stellar scintillation |
title_full_unstemmed |
Global distribution of C T 2 at altitudes 30–50 km from space-borne observations of stellar scintillation |
title_sort |
global distribution of c t 2 at altitudes 30–50 km from space-borne observations of stellar scintillation |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00201348 https://hal.science/hal-00201348/document https://hal.science/hal-00201348/file/Gurvich_et_al-2007-Geophysical_Research_Letters.pdf https://doi.org/10.1029/2007GL031134 |
genre |
polar night |
genre_facet |
polar night |
op_source |
ISSN: 0094-8276 EISSN: 1944-8007 Geophysical Research Letters https://hal.science/hal-00201348 Geophysical Research Letters, 2007, 34 (24), pp.L24813. ⟨10.1029/2007GL031134⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2007GL031134 hal-00201348 https://hal.science/hal-00201348 https://hal.science/hal-00201348/document https://hal.science/hal-00201348/file/Gurvich_et_al-2007-Geophysical_Research_Letters.pdf doi:10.1029/2007GL031134 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2007GL031134 |
container_title |
Geophysical Research Letters |
container_volume |
34 |
container_issue |
24 |
_version_ |
1768373674549706752 |