Moisture contribution of the Atlantic Warm Pool to precipitation: a Lagrangian analysis
In this work we use a Lagrangian model (FLEXPART) to investigate the contribution of moisture from the Atlantic Warm Pool (AWP) to the atmospheric hydrological budget during the period from 1982 to 1999, and to identify which regions are affected by the moisture transport from this source. FLEXPART...
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ftdoajarticles:oai:doaj.org/article:d7f727e9cb2b4e2a8ca636cac46289e8 2023-05-15T17:31:35+02:00 Moisture contribution of the Atlantic Warm Pool to precipitation: a Lagrangian analysis Rogert eSorí Gómez Anita eDrumond Raquel eNieto 2015-03-01T00:00:00Z https://doi.org/10.3389/fenvs.2015.00022 https://doaj.org/article/d7f727e9cb2b4e2a8ca636cac46289e8 EN eng Frontiers Media S.A. http://journal.frontiersin.org/Journal/10.3389/fenvs.2015.00022/full https://doaj.org/toc/2296-665X 2296-665X doi:10.3389/fenvs.2015.00022 https://doaj.org/article/d7f727e9cb2b4e2a8ca636cac46289e8 Frontiers in Environmental Science, Vol 3 (2015) sea surface temperature moisture transport Lagrangian approaches moisture sinks warm pool Environmental sciences GE1-350 article 2015 ftdoajarticles https://doi.org/10.3389/fenvs.2015.00022 2022-12-31T01:40:55Z In this work we use a Lagrangian model (FLEXPART) to investigate the contribution of moisture from the Atlantic Warm Pool (AWP) to the atmospheric hydrological budget during the period from 1982 to 1999, and to identify which regions are affected by the moisture transport from this source. FLEXPART computes budgets of evaporation minus precipitation by calculating changes in the specific humidity along 10-day forward trajectories. A monthly analysis was made for May-October, the typical development period of the AWP. Climatologically, the moisture transported from the AWP to North and Central America increases from June onwards. Humidity is also transported towards western Europe from July to October, probably favoured by the positioning of the North Atlantic Subtropical High and its associated flows. The largest moisture sinks associated with transport from the AWP were found from August to October, when the warm pool can extend to the north-western coast of Africa. The technique of composites was used to analyse how the interannual variability of moisture contribution from the AWP depends on changes in the pool’s areal extension, and on the El Niño Southern Oscillation (ENSO). The results indicate that during episodes when the AWP is at its maximum extent, its moisture contribution increased to the Caribbean, to the region of the Inter-tropical Convergence Zone (ITCZ), and to the North Atlantic. By contrast, less moisture was transported to southeastern North America during July and August, or to central North America during September and October. The differences in moisture sink regions for extreme ENSO episodes suggest that there are favoured sinks in the Caribbean and in the ITCZ region during La Niña events. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Frontiers in Environmental Science 3 |
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language |
English |
topic |
sea surface temperature moisture transport Lagrangian approaches moisture sinks warm pool Environmental sciences GE1-350 |
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sea surface temperature moisture transport Lagrangian approaches moisture sinks warm pool Environmental sciences GE1-350 Rogert eSorí Gómez Anita eDrumond Raquel eNieto Moisture contribution of the Atlantic Warm Pool to precipitation: a Lagrangian analysis |
topic_facet |
sea surface temperature moisture transport Lagrangian approaches moisture sinks warm pool Environmental sciences GE1-350 |
description |
In this work we use a Lagrangian model (FLEXPART) to investigate the contribution of moisture from the Atlantic Warm Pool (AWP) to the atmospheric hydrological budget during the period from 1982 to 1999, and to identify which regions are affected by the moisture transport from this source. FLEXPART computes budgets of evaporation minus precipitation by calculating changes in the specific humidity along 10-day forward trajectories. A monthly analysis was made for May-October, the typical development period of the AWP. Climatologically, the moisture transported from the AWP to North and Central America increases from June onwards. Humidity is also transported towards western Europe from July to October, probably favoured by the positioning of the North Atlantic Subtropical High and its associated flows. The largest moisture sinks associated with transport from the AWP were found from August to October, when the warm pool can extend to the north-western coast of Africa. The technique of composites was used to analyse how the interannual variability of moisture contribution from the AWP depends on changes in the pool’s areal extension, and on the El Niño Southern Oscillation (ENSO). The results indicate that during episodes when the AWP is at its maximum extent, its moisture contribution increased to the Caribbean, to the region of the Inter-tropical Convergence Zone (ITCZ), and to the North Atlantic. By contrast, less moisture was transported to southeastern North America during July and August, or to central North America during September and October. The differences in moisture sink regions for extreme ENSO episodes suggest that there are favoured sinks in the Caribbean and in the ITCZ region during La Niña events. |
format |
Article in Journal/Newspaper |
author |
Rogert eSorí Gómez Anita eDrumond Raquel eNieto |
author_facet |
Rogert eSorí Gómez Anita eDrumond Raquel eNieto |
author_sort |
Rogert eSorí Gómez |
title |
Moisture contribution of the Atlantic Warm Pool to precipitation: a Lagrangian analysis |
title_short |
Moisture contribution of the Atlantic Warm Pool to precipitation: a Lagrangian analysis |
title_full |
Moisture contribution of the Atlantic Warm Pool to precipitation: a Lagrangian analysis |
title_fullStr |
Moisture contribution of the Atlantic Warm Pool to precipitation: a Lagrangian analysis |
title_full_unstemmed |
Moisture contribution of the Atlantic Warm Pool to precipitation: a Lagrangian analysis |
title_sort |
moisture contribution of the atlantic warm pool to precipitation: a lagrangian analysis |
publisher |
Frontiers Media S.A. |
publishDate |
2015 |
url |
https://doi.org/10.3389/fenvs.2015.00022 https://doaj.org/article/d7f727e9cb2b4e2a8ca636cac46289e8 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Frontiers in Environmental Science, Vol 3 (2015) |
op_relation |
http://journal.frontiersin.org/Journal/10.3389/fenvs.2015.00022/full https://doaj.org/toc/2296-665X 2296-665X doi:10.3389/fenvs.2015.00022 https://doaj.org/article/d7f727e9cb2b4e2a8ca636cac46289e8 |
op_doi |
https://doi.org/10.3389/fenvs.2015.00022 |
container_title |
Frontiers in Environmental Science |
container_volume |
3 |
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1766129233112858624 |