Interannual and intra-annual variability of rainfall in Haiti (1905–2005)
International audience The interannual variability of annual and monthly rainfall in Haiti is examined from a database of 78 rain gauges in 1905-2005. The spatial coherence of annual rainfall is rather low, which is partly due to Haiti's rugged landscape, complex shoreline, and surrounding warm...
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ftinsu:oai:HAL:hal-02638211v1 2023-12-17T10:47:03+01:00 Interannual and intra-annual variability of rainfall in Haiti (1905–2005) Moron, Vincent Frelat, Romain Jean-Jeune, Pierre Karly Gaucherel, Cedric Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut Français de Pondichéry (IFP) Ministère de l'Europe et des Affaires étrangères (MEAE)-Centre National de la Recherche Scientifique (CNRS) Ministry of Agriculture Agencia Espanola de Cooperacion Internacional para el Desarrollo (AECID) Haitian Comite inter-ministeriel de l'Amenagement du Territoire (CIAT) 2015 https://hal.inrae.fr/hal-02638211 https://doi.org/10.1007/s00382-014-2326-y en eng HAL CCSD Springer Verlag info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-014-2326-y hal-02638211 https://hal.inrae.fr/hal-02638211 doi:10.1007/s00382-014-2326-y PRODINRA: 368264 WOS: 000356807800024 ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.inrae.fr/hal-02638211 Climate Dynamics, 2015, 45 (3-4), pp.915-932. ⟨10.1007/s00382-014-2326-y⟩ http://link.springer.com/journal/382 Ocean-atmosphere coupling Precipitation regime Rainfall variability Caribbean basin Haiti [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2015 ftinsu https://doi.org/10.1007/s00382-014-2326-y 2023-11-22T17:41:47Z International audience The interannual variability of annual and monthly rainfall in Haiti is examined from a database of 78 rain gauges in 1905-2005. The spatial coherence of annual rainfall is rather low, which is partly due to Haiti's rugged landscape, complex shoreline, and surrounding warm waters (mean sea surface temperatures > 27 degrees C from May to December). The interannual variation of monthly rainfall is mostly shaped by the intensity of the low-level winds across the Caribbean Sea, leading to a drier-(or wetter-) than-average rainy season associated with easterly (or westerly) anomalies, increasing (or decreasing) winds. The varying speed of low-level easterlies across the Caribbean basin may reflect at least four different processes during the year: (1) an anomalous trough/ridge over the western edge of the Azores high from December to February, peaking in January; (2) a zonal pressure gradient between Eastern Pacific and the tropical Northern Atlantic from May/June to September, with a peak in August (i. e. lower-than-average rainfall in Haiti is associated with positive sea level pressure anomalies over the tropical North Atlantic and negative sea level pressure anomalies over the Eastern Pacific); (3) a local ocean-atmosphere coupling between the speed of the Caribbean Low Level Jet and the meridional sea surface temperature (SST) gradient across the Caribbean basin (i.e. colder-than-average SST in the southern Caribbean sea is associated with increased easterlies and below-average rainfall in Haiti). This coupling is triggered when the warmest Caribbean waters move northward toward the Gulf of Mexico; (4) in October/November, a drier-(or wetter-) than-usual rainy season is related to an almost closed anticyclonic (or cyclonic) anomaly located ENE of Haiti on the SW edge of the Azores high. This suggests a main control of the interannual variations of rainfall by intensity, track and/or recurrence of tropical depressions traveling northeast of Haiti. During this period, the teleconnection ... Article in Journal/Newspaper North Atlantic Institut national des sciences de l'Univers: HAL-INSU Pacific Climate Dynamics 45 3-4 915 932 |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Ocean-atmosphere coupling Precipitation regime Rainfall variability Caribbean basin Haiti [SDV]Life Sciences [q-bio] |
spellingShingle |
Ocean-atmosphere coupling Precipitation regime Rainfall variability Caribbean basin Haiti [SDV]Life Sciences [q-bio] Moron, Vincent Frelat, Romain Jean-Jeune, Pierre Karly Gaucherel, Cedric Interannual and intra-annual variability of rainfall in Haiti (1905–2005) |
topic_facet |
Ocean-atmosphere coupling Precipitation regime Rainfall variability Caribbean basin Haiti [SDV]Life Sciences [q-bio] |
description |
International audience The interannual variability of annual and monthly rainfall in Haiti is examined from a database of 78 rain gauges in 1905-2005. The spatial coherence of annual rainfall is rather low, which is partly due to Haiti's rugged landscape, complex shoreline, and surrounding warm waters (mean sea surface temperatures > 27 degrees C from May to December). The interannual variation of monthly rainfall is mostly shaped by the intensity of the low-level winds across the Caribbean Sea, leading to a drier-(or wetter-) than-average rainy season associated with easterly (or westerly) anomalies, increasing (or decreasing) winds. The varying speed of low-level easterlies across the Caribbean basin may reflect at least four different processes during the year: (1) an anomalous trough/ridge over the western edge of the Azores high from December to February, peaking in January; (2) a zonal pressure gradient between Eastern Pacific and the tropical Northern Atlantic from May/June to September, with a peak in August (i. e. lower-than-average rainfall in Haiti is associated with positive sea level pressure anomalies over the tropical North Atlantic and negative sea level pressure anomalies over the Eastern Pacific); (3) a local ocean-atmosphere coupling between the speed of the Caribbean Low Level Jet and the meridional sea surface temperature (SST) gradient across the Caribbean basin (i.e. colder-than-average SST in the southern Caribbean sea is associated with increased easterlies and below-average rainfall in Haiti). This coupling is triggered when the warmest Caribbean waters move northward toward the Gulf of Mexico; (4) in October/November, a drier-(or wetter-) than-usual rainy season is related to an almost closed anticyclonic (or cyclonic) anomaly located ENE of Haiti on the SW edge of the Azores high. This suggests a main control of the interannual variations of rainfall by intensity, track and/or recurrence of tropical depressions traveling northeast of Haiti. During this period, the teleconnection ... |
author2 |
Centre européen de recherche et d'enseignement des géosciences de l'environnement (CEREGE) Institut de Recherche pour le Développement (IRD)-Institut National de la Recherche Agronomique (INRA)-Aix Marseille Université (AMU)-Collège de France (CdF (institution))-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Institut Français de Pondichéry (IFP) Ministère de l'Europe et des Affaires étrangères (MEAE)-Centre National de la Recherche Scientifique (CNRS) Ministry of Agriculture Agencia Espanola de Cooperacion Internacional para el Desarrollo (AECID) Haitian Comite inter-ministeriel de l'Amenagement du Territoire (CIAT) |
format |
Article in Journal/Newspaper |
author |
Moron, Vincent Frelat, Romain Jean-Jeune, Pierre Karly Gaucherel, Cedric |
author_facet |
Moron, Vincent Frelat, Romain Jean-Jeune, Pierre Karly Gaucherel, Cedric |
author_sort |
Moron, Vincent |
title |
Interannual and intra-annual variability of rainfall in Haiti (1905–2005) |
title_short |
Interannual and intra-annual variability of rainfall in Haiti (1905–2005) |
title_full |
Interannual and intra-annual variability of rainfall in Haiti (1905–2005) |
title_fullStr |
Interannual and intra-annual variability of rainfall in Haiti (1905–2005) |
title_full_unstemmed |
Interannual and intra-annual variability of rainfall in Haiti (1905–2005) |
title_sort |
interannual and intra-annual variability of rainfall in haiti (1905–2005) |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.inrae.fr/hal-02638211 https://doi.org/10.1007/s00382-014-2326-y |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0930-7575 EISSN: 1432-0894 Climate Dynamics https://hal.inrae.fr/hal-02638211 Climate Dynamics, 2015, 45 (3-4), pp.915-932. ⟨10.1007/s00382-014-2326-y⟩ http://link.springer.com/journal/382 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00382-014-2326-y hal-02638211 https://hal.inrae.fr/hal-02638211 doi:10.1007/s00382-014-2326-y PRODINRA: 368264 WOS: 000356807800024 |
op_doi |
https://doi.org/10.1007/s00382-014-2326-y |
container_title |
Climate Dynamics |
container_volume |
45 |
container_issue |
3-4 |
container_start_page |
915 |
op_container_end_page |
932 |
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1785570772960411648 |