Relations Among Duration of the El Niño Events, Tropical Atlantic Conditions and Rainfall Over Ceará
Abstract This paper investigates how El Niño events of different durations affect the atmospheric circulation over the Tropical North Atlantic (TNA) region, what are the consequences of these alterations in the sea surface temperature (SST) interannual variability and what are the responses, in term...
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Online Access: | https://dx.doi.org/10.6084/m9.figshare.7243625 https://scielo.figshare.com/articles/Relations_Among_Duration_of_the_El_Ni_o_Events_Tropical_Atlantic_Conditions_and_Rainfall_Over_Cear_/7243625 |
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ftdatacite:10.6084/m9.figshare.7243625 2023-05-15T17:33:11+02:00 Relations Among Duration of the El Niño Events, Tropical Atlantic Conditions and Rainfall Over Ceará Pinheiro, Enzo Júnior, Francisco Das Chagas Vasconcelos Martins, Eduardo Sávio Passos Rodrigues Diógenes Fontenele Passos Pereira, José Marcelo Rodrigues 2018 https://dx.doi.org/10.6084/m9.figshare.7243625 https://scielo.figshare.com/articles/Relations_Among_Duration_of_the_El_Ni_o_Events_Tropical_Atlantic_Conditions_and_Rainfall_Over_Cear_/7243625 unknown SciELO journals https://dx.doi.org/10.1590/0102-7786333009 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY 40107 Meteorology FOS Earth and related environmental sciences dataset Dataset 2018 ftdatacite https://doi.org/10.6084/m9.figshare.7243625 https://doi.org/10.1590/0102-7786333009 2021-11-05T12:55:41Z Abstract This paper investigates how El Niño events of different durations affect the atmospheric circulation over the Tropical North Atlantic (TNA) region, what are the consequences of these alterations in the sea surface temperature (SST) interannual variability and what are the responses, in terms of precipitation anomalies, over Ceará. Composite analyses of oceanographic and atmospheric variables were made for 18 El Niño years, divided between events of short and long duration. Events that lasted longer resulted in positive SST anomalies in the TNA region, leading to an interhemispheric gradient of SST anomalies in the Tropical Atlantic and below normal precipitation anomalies over Ceará. On the other hand, the alterations in the atmospheric circulation on TNA, during years of short duration El Niño, have not shown to be as intense as those in years of long duration El Niño. This resulted in SST anomalies on TNA close to zero and consequently, the interhemispheric gradient of SST anomalies was not observed. The near normal precipitation anomalies composites are consistent with the no formation of a SST anomalies gradient. Dataset North Atlantic DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
40107 Meteorology FOS Earth and related environmental sciences |
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40107 Meteorology FOS Earth and related environmental sciences Pinheiro, Enzo Júnior, Francisco Das Chagas Vasconcelos Martins, Eduardo Sávio Passos Rodrigues Diógenes Fontenele Passos Pereira, José Marcelo Rodrigues Relations Among Duration of the El Niño Events, Tropical Atlantic Conditions and Rainfall Over Ceará |
topic_facet |
40107 Meteorology FOS Earth and related environmental sciences |
description |
Abstract This paper investigates how El Niño events of different durations affect the atmospheric circulation over the Tropical North Atlantic (TNA) region, what are the consequences of these alterations in the sea surface temperature (SST) interannual variability and what are the responses, in terms of precipitation anomalies, over Ceará. Composite analyses of oceanographic and atmospheric variables were made for 18 El Niño years, divided between events of short and long duration. Events that lasted longer resulted in positive SST anomalies in the TNA region, leading to an interhemispheric gradient of SST anomalies in the Tropical Atlantic and below normal precipitation anomalies over Ceará. On the other hand, the alterations in the atmospheric circulation on TNA, during years of short duration El Niño, have not shown to be as intense as those in years of long duration El Niño. This resulted in SST anomalies on TNA close to zero and consequently, the interhemispheric gradient of SST anomalies was not observed. The near normal precipitation anomalies composites are consistent with the no formation of a SST anomalies gradient. |
format |
Dataset |
author |
Pinheiro, Enzo Júnior, Francisco Das Chagas Vasconcelos Martins, Eduardo Sávio Passos Rodrigues Diógenes Fontenele Passos Pereira, José Marcelo Rodrigues |
author_facet |
Pinheiro, Enzo Júnior, Francisco Das Chagas Vasconcelos Martins, Eduardo Sávio Passos Rodrigues Diógenes Fontenele Passos Pereira, José Marcelo Rodrigues |
author_sort |
Pinheiro, Enzo |
title |
Relations Among Duration of the El Niño Events, Tropical Atlantic Conditions and Rainfall Over Ceará |
title_short |
Relations Among Duration of the El Niño Events, Tropical Atlantic Conditions and Rainfall Over Ceará |
title_full |
Relations Among Duration of the El Niño Events, Tropical Atlantic Conditions and Rainfall Over Ceará |
title_fullStr |
Relations Among Duration of the El Niño Events, Tropical Atlantic Conditions and Rainfall Over Ceará |
title_full_unstemmed |
Relations Among Duration of the El Niño Events, Tropical Atlantic Conditions and Rainfall Over Ceará |
title_sort |
relations among duration of the el niño events, tropical atlantic conditions and rainfall over ceará |
publisher |
SciELO journals |
publishDate |
2018 |
url |
https://dx.doi.org/10.6084/m9.figshare.7243625 https://scielo.figshare.com/articles/Relations_Among_Duration_of_the_El_Ni_o_Events_Tropical_Atlantic_Conditions_and_Rainfall_Over_Cear_/7243625 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1590/0102-7786333009 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.7243625 https://doi.org/10.1590/0102-7786333009 |
_version_ |
1766131610719092736 |