Remote impact of North Atlantic hurricanes on the Mediterranean during episodes of intense rainfall in autumn 2012
International audience Autumn is the most favourable season for tropical cyclones to undergo extratropical transition and interact with the midlatitude flow over the North Atlantic. Autumn is also the season when intense rainfall over the Mediterranean is often triggered by Rossby wave breaking. The...
Published in: | Quarterly Journal of the Royal Meteorological Society |
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Online Access: | https://hal.science/hal-04254680 https://doi.org/10.1002/qj.2419 |
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ftccsdartic:oai:HAL:hal-04254680v1 2023-12-24T10:22:57+01:00 Remote impact of North Atlantic hurricanes on the Mediterranean during episodes of intense rainfall in autumn 2012 Pantillon, Florian Chaboureau, Jean‐pierre Richard, Evelyne Laboratoire d'aérologie (LAERO) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) 2015-04 https://hal.science/hal-04254680 https://doi.org/10.1002/qj.2419 en eng HAL CCSD Wiley info:eu-repo/semantics/altIdentifier/doi/10.1002/qj.2419 hal-04254680 https://hal.science/hal-04254680 doi:10.1002/qj.2419 http://hal.archives-ouvertes.fr/licences/copyright/ ISSN: 0035-9009 EISSN: 1477-870X Quarterly Journal of the Royal Meteorological Society https://hal.science/hal-04254680 Quarterly Journal of the Royal Meteorological Society, 2015, 141 (688), pp.967-978. ⟨10.1002/qj.2419⟩ Tropical cyclone Rossby wave breaking HyMeX downstream development Meso-NH model filtering [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2015 ftccsdartic https://doi.org/10.1002/qj.2419 2023-11-25T23:42:11Z International audience Autumn is the most favourable season for tropical cyclones to undergo extratropical transition and interact with the midlatitude flow over the North Atlantic. Autumn is also the season when intense rainfall over the Mediterranean is often triggered by Rossby wave breaking. The impact of tropical cyclones on downstream wave breaking is investigated here during three episodes of intense rainfall which were the target of HyMeX (Hydrological cycle in Mediterranean eXperiment) in autumn 2012. Five‐day simulations of hurricanes Leslie , Rafael and Sandy were performed with the Meso‐NH model in a domain encompassing the North Atlantic and the Mediterranean. Control simulations were compared to simulations in which the hurricanes were filtered out from the initial conditions. In each case, the hurricane locally impeded the forward progression of an upstream trough, then reintensified as an extratropical cyclone during the wrap‐up of the trough. The local impact of Leslie and Rafael on the midlatitude flow quickly propagated downstream along a polar jet and amplified Rossby wave breaking but decreased the intensity of the forecast precipitation over the Mediterranean. The local impact of Sandy propagated downstream along a subtropical jet in addition to the polar jet and resulted in a weak impact of the forecast precipitation on the Mediterranean. This study suggests that the interaction of tropical cyclones with the midlatitude flow over the western North Atlantic may be considered a perturbation to, rather than a source of, downstream wave breaking. Article in Journal/Newspaper North Atlantic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Quarterly Journal of the Royal Meteorological Society 141 688 967 978 |
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 |
Tropical cyclone Rossby wave breaking HyMeX downstream development Meso-NH model filtering [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
Tropical cyclone Rossby wave breaking HyMeX downstream development Meso-NH model filtering [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Pantillon, Florian Chaboureau, Jean‐pierre Richard, Evelyne Remote impact of North Atlantic hurricanes on the Mediterranean during episodes of intense rainfall in autumn 2012 |
topic_facet |
Tropical cyclone Rossby wave breaking HyMeX downstream development Meso-NH model filtering [SDU]Sciences of the Universe [physics] [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Autumn is the most favourable season for tropical cyclones to undergo extratropical transition and interact with the midlatitude flow over the North Atlantic. Autumn is also the season when intense rainfall over the Mediterranean is often triggered by Rossby wave breaking. The impact of tropical cyclones on downstream wave breaking is investigated here during three episodes of intense rainfall which were the target of HyMeX (Hydrological cycle in Mediterranean eXperiment) in autumn 2012. Five‐day simulations of hurricanes Leslie , Rafael and Sandy were performed with the Meso‐NH model in a domain encompassing the North Atlantic and the Mediterranean. Control simulations were compared to simulations in which the hurricanes were filtered out from the initial conditions. In each case, the hurricane locally impeded the forward progression of an upstream trough, then reintensified as an extratropical cyclone during the wrap‐up of the trough. The local impact of Leslie and Rafael on the midlatitude flow quickly propagated downstream along a polar jet and amplified Rossby wave breaking but decreased the intensity of the forecast precipitation over the Mediterranean. The local impact of Sandy propagated downstream along a subtropical jet in addition to the polar jet and resulted in a weak impact of the forecast precipitation on the Mediterranean. This study suggests that the interaction of tropical cyclones with the midlatitude flow over the western North Atlantic may be considered a perturbation to, rather than a source of, downstream wave breaking. |
author2 |
Laboratoire d'aérologie (LAERO) Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Pantillon, Florian Chaboureau, Jean‐pierre Richard, Evelyne |
author_facet |
Pantillon, Florian Chaboureau, Jean‐pierre Richard, Evelyne |
author_sort |
Pantillon, Florian |
title |
Remote impact of North Atlantic hurricanes on the Mediterranean during episodes of intense rainfall in autumn 2012 |
title_short |
Remote impact of North Atlantic hurricanes on the Mediterranean during episodes of intense rainfall in autumn 2012 |
title_full |
Remote impact of North Atlantic hurricanes on the Mediterranean during episodes of intense rainfall in autumn 2012 |
title_fullStr |
Remote impact of North Atlantic hurricanes on the Mediterranean during episodes of intense rainfall in autumn 2012 |
title_full_unstemmed |
Remote impact of North Atlantic hurricanes on the Mediterranean during episodes of intense rainfall in autumn 2012 |
title_sort |
remote impact of north atlantic hurricanes on the mediterranean during episodes of intense rainfall in autumn 2012 |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-04254680 https://doi.org/10.1002/qj.2419 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0035-9009 EISSN: 1477-870X Quarterly Journal of the Royal Meteorological Society https://hal.science/hal-04254680 Quarterly Journal of the Royal Meteorological Society, 2015, 141 (688), pp.967-978. ⟨10.1002/qj.2419⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/qj.2419 hal-04254680 https://hal.science/hal-04254680 doi:10.1002/qj.2419 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ |
op_doi |
https://doi.org/10.1002/qj.2419 |
container_title |
Quarterly Journal of the Royal Meteorological Society |
container_volume |
141 |
container_issue |
688 |
container_start_page |
967 |
op_container_end_page |
978 |
_version_ |
1786196568583438336 |