Intermittency in a stochastic parameterization of nonorographic gravity waves
International audience A multiwave stochastic parameterization of nonorographic gravity waves (GWs), representing GWs produced by convection and a background of GWs in the midlatitudes, is tuned and tested against momentum fluxes derived from long-duration balloon flights. The tests are done offline...
Published in: | Journal of Geophysical Research: Atmospheres |
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Online Access: | https://hal.science/hal-04114601 https://hal.science/hal-04114601/document https://hal.science/hal-04114601/file/JGR%20Atmospheres%20-%202014%20-%20C%20mara%20-%20Intermittency%20in%20a%20stochastic%20parameterization%20of%20nonorographic%20gravity%20waves.pdf https://doi.org/10.1002/2014JD022002 |
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ftinsu:oai:HAL:hal-04114601v1 2023-06-18T03:43:12+02:00 Intermittency in a stochastic parameterization of nonorographic gravity waves de la Cámara, A. Lott, F. Hertzog, A. 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)-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) 2014 https://hal.science/hal-04114601 https://hal.science/hal-04114601/document https://hal.science/hal-04114601/file/JGR%20Atmospheres%20-%202014%20-%20C%20mara%20-%20Intermittency%20in%20a%20stochastic%20parameterization%20of%20nonorographic%20gravity%20waves.pdf https://doi.org/10.1002/2014JD022002 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1002/2014JD022002 hal-04114601 https://hal.science/hal-04114601 https://hal.science/hal-04114601/document https://hal.science/hal-04114601/file/JGR%20Atmospheres%20-%202014%20-%20C%20mara%20-%20Intermittency%20in%20a%20stochastic%20parameterization%20of%20nonorographic%20gravity%20waves.pdf BIBCODE: 2014JGRD.11911905D doi:10.1002/2014JD022002 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess Journal of Geophysical Research: Atmospheres https://hal.science/hal-04114601 Journal of Geophysical Research: Atmospheres, 2014, 119, pp.11,905-11,919. ⟨10.1002/2014JD022002⟩ gravity waves parameterization intermittency stratospheric dynamics Earth Science [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2014 ftinsu https://doi.org/10.1002/2014JD022002 2023-06-07T16:21:07Z International audience A multiwave stochastic parameterization of nonorographic gravity waves (GWs), representing GWs produced by convection and a background of GWs in the midlatitudes, is tuned and tested against momentum fluxes derived from long-duration balloon flights. The tests are done offline using data sets corresponding to the Southern Ocean during the Concordiasi campaign in 2010. We also adopt the limiting constraint that the drag produced by the scheme resembles that produced by a highly tuned spectral GW parameterization, the so-called Hines scheme. Our results show that the parameterization can reproduce the momentum flux intermittency measured during the campaign, which is relevant since it strongly impacts on the vertical distribution of the GW drag. We also show that, at the altitude of the balloon flights, the momentum flux intermittency is in good part due to the GW sources: filtering by the background winds only becomes effective at much higher altitude. These results are based on bulk formulae for the GW momentum flux that could be used to replace our background GWs by GWs produced by fronts. Finally, the GW energy spectra built out of the stochastic scheme by averaging over a large ensemble of realizations are comparable to the classical vertical spectra of GWs, used today in globally spectral schemes. This indicates that multiwave and spectral schemes can be reconciled once a stochastic approach is used. Article in Journal/Newspaper Southern Ocean Institut national des sciences de l'Univers: HAL-INSU Hines ENVELOPE(13.035,13.035,66.243,66.243) Southern Ocean Journal of Geophysical Research: Atmospheres 119 21 11,905 11,919 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
gravity waves parameterization intermittency stratospheric dynamics Earth Science [SDU]Sciences of the Universe [physics] |
spellingShingle |
gravity waves parameterization intermittency stratospheric dynamics Earth Science [SDU]Sciences of the Universe [physics] de la Cámara, A. Lott, F. Hertzog, A. Intermittency in a stochastic parameterization of nonorographic gravity waves |
topic_facet |
gravity waves parameterization intermittency stratospheric dynamics Earth Science [SDU]Sciences of the Universe [physics] |
description |
International audience A multiwave stochastic parameterization of nonorographic gravity waves (GWs), representing GWs produced by convection and a background of GWs in the midlatitudes, is tuned and tested against momentum fluxes derived from long-duration balloon flights. The tests are done offline using data sets corresponding to the Southern Ocean during the Concordiasi campaign in 2010. We also adopt the limiting constraint that the drag produced by the scheme resembles that produced by a highly tuned spectral GW parameterization, the so-called Hines scheme. Our results show that the parameterization can reproduce the momentum flux intermittency measured during the campaign, which is relevant since it strongly impacts on the vertical distribution of the GW drag. We also show that, at the altitude of the balloon flights, the momentum flux intermittency is in good part due to the GW sources: filtering by the background winds only becomes effective at much higher altitude. These results are based on bulk formulae for the GW momentum flux that could be used to replace our background GWs by GWs produced by fronts. Finally, the GW energy spectra built out of the stochastic scheme by averaging over a large ensemble of realizations are comparable to the classical vertical spectra of GWs, used today in globally spectral schemes. This indicates that multiwave and spectral schemes can be reconciled once a stochastic approach is used. |
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)-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 |
de la Cámara, A. Lott, F. Hertzog, A. |
author_facet |
de la Cámara, A. Lott, F. Hertzog, A. |
author_sort |
de la Cámara, A. |
title |
Intermittency in a stochastic parameterization of nonorographic gravity waves |
title_short |
Intermittency in a stochastic parameterization of nonorographic gravity waves |
title_full |
Intermittency in a stochastic parameterization of nonorographic gravity waves |
title_fullStr |
Intermittency in a stochastic parameterization of nonorographic gravity waves |
title_full_unstemmed |
Intermittency in a stochastic parameterization of nonorographic gravity waves |
title_sort |
intermittency in a stochastic parameterization of nonorographic gravity waves |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.science/hal-04114601 https://hal.science/hal-04114601/document https://hal.science/hal-04114601/file/JGR%20Atmospheres%20-%202014%20-%20C%20mara%20-%20Intermittency%20in%20a%20stochastic%20parameterization%20of%20nonorographic%20gravity%20waves.pdf https://doi.org/10.1002/2014JD022002 |
long_lat |
ENVELOPE(13.035,13.035,66.243,66.243) |
geographic |
Hines Southern Ocean |
geographic_facet |
Hines Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Journal of Geophysical Research: Atmospheres https://hal.science/hal-04114601 Journal of Geophysical Research: Atmospheres, 2014, 119, pp.11,905-11,919. ⟨10.1002/2014JD022002⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2014JD022002 hal-04114601 https://hal.science/hal-04114601 https://hal.science/hal-04114601/document https://hal.science/hal-04114601/file/JGR%20Atmospheres%20-%202014%20-%20C%20mara%20-%20Intermittency%20in%20a%20stochastic%20parameterization%20of%20nonorographic%20gravity%20waves.pdf BIBCODE: 2014JGRD.11911905D doi:10.1002/2014JD022002 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2014JD022002 |
container_title |
Journal of Geophysical Research: Atmospheres |
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119 |
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21 |
container_start_page |
11,905 |
op_container_end_page |
11,919 |
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1769009485438779392 |