Water vapor effect on low frequency variability and storm-tracks
International audience Storm tracks are an important component of the climate system, particularly for winter at mid-latitudes when they determine the daily weather and supply most of the precipitation. Recently, the way synoptic waves break along the storm-tracks (cyclonically or anticyclonically)...
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ftinsu:oai:HAL:hal-04113632v1 2024-01-14T10:09:02+01:00 Water vapor effect on low frequency variability and storm-tracks Laîné, A. Lapeyre, G. Rivière, G. 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) à renseigner, Unknown Region 2009 https://hal.science/hal-04113632 en eng HAL CCSD hal-04113632 https://hal.science/hal-04113632 BIBCODE: 2009EGUGA.1112018L EGU General Assembly 2009 https://hal.science/hal-04113632 EGU General Assembly 2009, 2009, à renseigner, Unknown Region. pp.12018 [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/conferenceObject Conference papers 2009 ftinsu 2023-12-20T17:23:37Z International audience Storm tracks are an important component of the climate system, particularly for winter at mid-latitudes when they determine the daily weather and supply most of the precipitation. Recently, the way synoptic waves break along the storm-tracks (cyclonically or anticyclonically) in the eastern part of the oceanic basins was shown to influence the latitudinal displacement of the jet and the low frequency variability like the North Atlantic Oscillation (NAO). The characteristics of the coupling between low frequency variability and the dynamics of weather systems still need to be better assessed. We use a quasi-geostrophic model on the sphere to study the interaction between low frequency variability and synoptic systems for the northern mid-latitude climate. A dry and a moist version of the model are used to study the effect of humidity on synoptic activity and especially the type of wave breaking, cyclonic or anticyclonic. Different forcing climatologies are used to assess the sensitivity of the storm track and the influence of water vapor. Conference Object North Atlantic North Atlantic oscillation Institut national des sciences de l'Univers: HAL-INSU |
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Open Polar |
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Institut national des sciences de l'Univers: HAL-INSU |
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language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
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[SDU]Sciences of the Universe [physics] Laîné, A. Lapeyre, G. Rivière, G. Water vapor effect on low frequency variability and storm-tracks |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Storm tracks are an important component of the climate system, particularly for winter at mid-latitudes when they determine the daily weather and supply most of the precipitation. Recently, the way synoptic waves break along the storm-tracks (cyclonically or anticyclonically) in the eastern part of the oceanic basins was shown to influence the latitudinal displacement of the jet and the low frequency variability like the North Atlantic Oscillation (NAO). The characteristics of the coupling between low frequency variability and the dynamics of weather systems still need to be better assessed. We use a quasi-geostrophic model on the sphere to study the interaction between low frequency variability and synoptic systems for the northern mid-latitude climate. A dry and a moist version of the model are used to study the effect of humidity on synoptic activity and especially the type of wave breaking, cyclonic or anticyclonic. Different forcing climatologies are used to assess the sensitivity of the storm track and the influence of water vapor. |
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 |
Conference Object |
author |
Laîné, A. Lapeyre, G. Rivière, G. |
author_facet |
Laîné, A. Lapeyre, G. Rivière, G. |
author_sort |
Laîné, A. |
title |
Water vapor effect on low frequency variability and storm-tracks |
title_short |
Water vapor effect on low frequency variability and storm-tracks |
title_full |
Water vapor effect on low frequency variability and storm-tracks |
title_fullStr |
Water vapor effect on low frequency variability and storm-tracks |
title_full_unstemmed |
Water vapor effect on low frequency variability and storm-tracks |
title_sort |
water vapor effect on low frequency variability and storm-tracks |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.science/hal-04113632 |
op_coverage |
à renseigner, Unknown Region |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
EGU General Assembly 2009 https://hal.science/hal-04113632 EGU General Assembly 2009, 2009, à renseigner, Unknown Region. pp.12018 |
op_relation |
hal-04113632 https://hal.science/hal-04113632 BIBCODE: 2009EGUGA.1112018L |
_version_ |
1788063483962589184 |