Impacts of el niño and la niña in the precipitation over Perú (1965-2007)

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  • The impacts of El Niño (EN) and La Niña (LN) in rainfall in Peru are evaluated using monthly data (1965-2007) of 155 stations distributed over the three hydrographic drainages of Peru: 85 in the Pacific (VP), 21 in the Lake Titicaca (VT) and 49 in the Amazon (VA). To classify El Niño and La Niña is...

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Main Author: Lavado-Casimiro, W.
Other Authors: Espinoza, J.C.
Format: Artículo
Language: eng
Published: 2014
Subjects:
Online Access: http://repositorio.senamhi.gob.pe/handle/20.500.12542/97
https://doi.org/10.1590/S0102-77862014000200003
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spelling Lavado-Casimiro, W.Espinoza, J.C.2019-07-28T00:04:45Z2019-07-28T00:04:45Z2014-060102-7786http://repositorio.senamhi.gob.pe/handle/20.500.12542/970000 0001 0746 0446https://doi.org/10.1590/S0102-77862014000200003The impacts of El Niño (EN) and La Niña (LN) in rainfall in Peru are evaluated using monthly data (1965-2007) of 155 stations distributed over the three hydrographic drainages of Peru: 85 in the Pacific (VP), 21 in the Lake Titicaca (VT) and 49 in the Amazon (VA). To classify El Niño and La Niña is used the Index Troup Southern Oscillation (SOI) based on hydrological years (September to August). Using these values was reclassified as strong El Niño (ENF) moderate El Niño (ENM), moderate La Niña (LNM) and strong La Niña (LNF). The results show that only during ENF and LNF events exhibit a high percentage of stations with significant anomalies of precipitation and mainly located in the VP and VT during the December to May period. Our analysis confirms that the northern part of the VP has an increased rainfall during ENF, while the southern Andean region of the VP has decreased (increased) rainfall during ENF (LNF). The VT presents a significant rainfall deficit during ENF. The precipitation variation in the VA is instead more sensitive to LNF events, during which major rainfall are observed than usually. In a second step, we analyze the main modes of interannual variability of rainfall in Peru using the technique of empirical orthogonal functions (EOF). The results are related to the variability of sea surface temperature and IOS, E and C indices of the equatorial Pacific. It was found that the main mode of rainfall variability (PC1, 37% of the total variance) is associated with two extraordinary events EN (1983 and 1998), which generated heavy rain in the north of the VP and droughts in the VT and VA. On the other hand, the second mode of variability of rainfall (PC2, 25%) correlates with anomalies of sea surface temperature in the central equatorial Pacific, cold conditions in this region (LN) causes more rainfall than normal in the Andean region of the VP, VT and in VA. In conclusion, it appears that the variability of the Pacific Ocean not explain the entire rainfall variability in Peru. Thus, perspectives are described considering other regions such as the Tropical Atlantic Ocean.Revisión por paresapplication/pdfengSociedade Brasileira de Meteorologiainfo:eu-repo/semantics/openAccessAttribution-NonCommercial-ShareAlike 3.0 United Stateshttp://creativecommons.org/licenses/by-nc-sa/3.0/us/Servicio Nacional de Meteorología e Hidrología del PerúRepositorio Institucional - SENAMHI292171182Revista Brasileira de Meteorologiareponame:SENAMHI-Institucionalinstname:Servicio Nacional de Meteorología e Hidrología del Perúinstacron:SENAMHIAmazoniaAndesEl Niño southern oscillation (ENSOPeruRainfall variabilityImpacts of el niño and la niña in the precipitation over Perú (1965-2007)Impactos de El Niño y La Niña en las lluvias del Perú (1965-2007)info:eu-repo/semantics/articleORIGINALLavado-casimiro-2014-Impactos-de-el-nino-y-la-nina-en-la.pdfLavado-casimiro-2014-Impactos-de-el-nino-y-la-nina-en-la.pdfapplication/pdf1001822http://repositorio.senamhi.gob.pe/bitstream/20.500.12542/97/1/Lavado-casimiro-2014-Impactos-de-el-nino-y-la-nina-en-la.pdfc98ea04fbb4615ea5e508f45a26b7056MD51CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-81037http://repositorio.senamhi.gob.pe/bitstream/20.500.12542/97/2/license_rdf80294ba9ff4c5b4f07812ee200fbc42fMD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://repositorio.senamhi.gob.pe/bitstream/20.500.12542/97/3/license.txt8a4605be74aa9ea9d79846c1fba20a33MD53TEXTLavado-casimiro-2014-Impactos-de-el-nino-y-la-nina-en-la.pdf.txtLavado-casimiro-2014-Impactos-de-el-nino-y-la-nina-en-la.pdf.txtExtracted texttext/plain45407http://repositorio.senamhi.gob.pe/bitstream/20.500.12542/97/4/Lavado-casimiro-2014-Impactos-de-el-nino-y-la-nina-en-la.pdf.txt2586159b423a33e4ae84c3c8902e1095MD54THUMBNAILLavado-casimiro-2014-Impactos-de-el-nino-y-la-nina-en-la.pdf.jpgLavado-casimiro-2014-Impactos-de-el-nino-y-la-nina-en-la.pdf.jpgGenerated Thumbnailimage/jpeg6758http://repositorio.senamhi.gob.pe/bitstream/20.500.12542/97/5/Lavado-casimiro-2014-Impactos-de-el-nino-y-la-nina-en-la.pdf.jpg9d90bb9a6026df9fdc406d396f80069cMD5520.500.12542/97oai:repositorio.senamhi.gob.pe:20.500.12542/972019-10-28 19:01:33.236Repositorio Institucional SENAMHIdspace-help@myu.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
dc.title.en_US.fl_str_mv Impacts of el niño and la niña in the precipitation over Perú (1965-2007)
dc.title.alternative.en_US.fl_str_mv Impactos de El Niño y La Niña en las lluvias del Perú (1965-2007)
title Impacts of el niño and la niña in the precipitation over Perú (1965-2007)
spellingShingle Impacts of el niño and la niña in the precipitation over Perú (1965-2007)
Lavado-Casimiro, W.
Amazonia
Andes
El Niño southern oscillation (ENSO
Peru
Rainfall variability
title_short Impacts of el niño and la niña in the precipitation over Perú (1965-2007)
title_full Impacts of el niño and la niña in the precipitation over Perú (1965-2007)
title_fullStr Impacts of el niño and la niña in the precipitation over Perú (1965-2007)
title_full_unstemmed Impacts of el niño and la niña in the precipitation over Perú (1965-2007)
title_sort Impacts of el niño and la niña in the precipitation over Perú (1965-2007)
author Lavado-Casimiro, W.
author_facet Lavado-Casimiro, W.
Espinoza, J.C.
author_role author
author2 Espinoza, J.C.
author2_role author
dc.contributor.author.fl_str_mv Lavado-Casimiro, W.
Espinoza, J.C.
dc.subject.en_US.fl_str_mv Amazonia
Andes
El Niño southern oscillation (ENSO
Peru
Rainfall variability
topic Amazonia
Andes
El Niño southern oscillation (ENSO
Peru
Rainfall variability
dc.description.abstract.en_US.fl_txt_mv The impacts of El Niño (EN) and La Niña (LN) in rainfall in Peru are evaluated using monthly data (1965-2007) of 155 stations distributed over the three hydrographic drainages of Peru: 85 in the Pacific (VP), 21 in the Lake Titicaca (VT) and 49 in the Amazon (VA). To classify El Niño and La Niña is used the Index Troup Southern Oscillation (SOI) based on hydrological years (September to August). Using these values was reclassified as strong El Niño (ENF) moderate El Niño (ENM), moderate La Niña (LNM) and strong La Niña (LNF). The results show that only during ENF and LNF events exhibit a high percentage of stations with significant anomalies of precipitation and mainly located in the VP and VT during the December to May period. Our analysis confirms that the northern part of the VP has an increased rainfall during ENF, while the southern Andean region of the VP has decreased (increased) rainfall during ENF (LNF). The VT presents a significant rainfall deficit during ENF. The precipitation variation in the VA is instead more sensitive to LNF events, during which major rainfall are observed than usually. In a second step, we analyze the main modes of interannual variability of rainfall in Peru using the technique of empirical orthogonal functions (EOF). The results are related to the variability of sea surface temperature and IOS, E and C indices of the equatorial Pacific. It was found that the main mode of rainfall variability (PC1, 37% of the total variance) is associated with two extraordinary events EN (1983 and 1998), which generated heavy rain in the north of the VP and droughts in the VT and VA. On the other hand, the second mode of variability of rainfall (PC2, 25%) correlates with anomalies of sea surface temperature in the central equatorial Pacific, cold conditions in this region (LN) causes more rainfall than normal in the Andean region of the VP, VT and in VA. In conclusion, it appears that the variability of the Pacific Ocean not explain the entire rainfall variability in Peru. Thus, perspectives are described considering other regions such as the Tropical Atlantic Ocean.
dc.description.peerreview.es_PE.fl_txt_mv Revisión por pares
description The impacts of El Niño (EN) and La Niña (LN) in rainfall in Peru are evaluated using monthly data (1965-2007) of 155 stations distributed over the three hydrographic drainages of Peru: 85 in the Pacific (VP), 21 in the Lake Titicaca (VT) and 49 in the Amazon (VA). To classify El Niño and La Niña is used the Index Troup Southern Oscillation (SOI) based on hydrological years (September to August). Using these values was reclassified as strong El Niño (ENF) moderate El Niño (ENM), moderate La Niña (LNM) and strong La Niña (LNF). The results show that only during ENF and LNF events exhibit a high percentage of stations with significant anomalies of precipitation and mainly located in the VP and VT during the December to May period. Our analysis confirms that the northern part of the VP has an increased rainfall during ENF, while the southern Andean region of the VP has decreased (increased) rainfall during ENF (LNF). The VT presents a significant rainfall deficit during ENF. The precipitation variation in the VA is instead more sensitive to LNF events, during which major rainfall are observed than usually. In a second step, we analyze the main modes of interannual variability of rainfall in Peru using the technique of empirical orthogonal functions (EOF). The results are related to the variability of sea surface temperature and IOS, E and C indices of the equatorial Pacific. It was found that the main mode of rainfall variability (PC1, 37% of the total variance) is associated with two extraordinary events EN (1983 and 1998), which generated heavy rain in the north of the VP and droughts in the VT and VA. On the other hand, the second mode of variability of rainfall (PC2, 25%) correlates with anomalies of sea surface temperature in the central equatorial Pacific, cold conditions in this region (LN) causes more rainfall than normal in the Andean region of the VP, VT and in VA. In conclusion, it appears that the variability of the Pacific Ocean not explain the entire rainfall variability in Peru. Thus, perspectives are described considering other regions such as the Tropical Atlantic Ocean.
publishDate 2014
dc.date.accessioned.none.fl_str_mv 2019-07-28T00:04:45Z
dc.date.available.none.fl_str_mv 2019-07-28T00:04:45Z
dc.date.issued.fl_str_mv 2014-06
dc.type.en_US.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.issn.none.fl_str_mv 0102-7786
dc.identifier.uri.none.fl_str_mv http://repositorio.senamhi.gob.pe/handle/20.500.12542/97
dc.identifier.isni.es_PE.fl_str_mv 0000 0001 0746 0446
dc.identifier.doi.es_PE.fl_str_mv https://doi.org/10.1590/S0102-77862014000200003
identifier_str_mv 0102-7786
0000 0001 0746 0446
url http://repositorio.senamhi.gob.pe/handle/20.500.12542/97
https://doi.org/10.1590/S0102-77862014000200003
dc.language.iso.en_US.fl_str_mv eng
language eng
dc.rights.es_PE.fl_str_mv info:eu-repo/semantics/openAccess
dc.rights.*.fl_str_mv Attribution-NonCommercial-ShareAlike 3.0 United States
dc.rights.uri.*.fl_str_mv http://creativecommons.org/licenses/by-nc-sa/3.0/us/
eu_rights_str_mv openAccess
rights_invalid_str_mv Attribution-NonCommercial-ShareAlike 3.0 United States
http://creativecommons.org/licenses/by-nc-sa/3.0/us/
dc.format.es_PE.fl_str_mv application/pdf
dc.publisher.en_US.fl_str_mv Sociedade Brasileira de Meteorologia
dc.source.es_PE.fl_str_mv Servicio Nacional de Meteorología e Hidrología del Perú
Repositorio Institucional - SENAMHI
dc.source.none.fl_str_mv reponame:SENAMHI-Institucional
instname:Servicio Nacional de Meteorología e Hidrología del Perú
instacron:SENAMHI
reponame_str SENAMHI-Institucional
collection SENAMHI-Institucional
instname_str Servicio Nacional de Meteorología e Hidrología del Perú
instacron_str SENAMHI
institution SENAMHI
dc.source.volume.es_PE.fl_str_mv 29
dc.source.issue.es_PE.fl_str_mv 2
dc.source.initialpage.es_PE.fl_str_mv 171
dc.source.endpage.es_PE.fl_str_mv 182
dc.source.journal.es_PE.fl_str_mv Revista Brasileira de Meteorologia
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