Processes controlling the mean tropical Pacific precipitation pattern. Part II: The SPCZ and the southeast Pacific dry zone

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dc.contributor.authorTakahashi, Ken
dc.contributor.authorBattisti, David S.
dc.coverage.spatialOceano Pacífico Sur
dc.date.accessioned2018-07-30T18:05:13Z
dc.date.available2018-07-30T18:05:13Z
dc.date.issued2007-12-01
dc.description.abstractThe nature of the South Pacific convergence zone (SPCZ) is addressed by focusing on the dry (and cool) zone bounded by it and the coast of South America through numerical experiments. As shown in a companion paper, this dry zone is due, to a large extent, to orographically forced subsidence. Here it is shown that the northwestward expansion of this dry zone can be explained by advection of low moist static energy by the trade winds. These results provide an explanation of the geometry of the western edge of the dry zone and, therefore, of the eastern edge of the adjacent SPCZ. Sea surface temperature underneath the SPCZ is enhanced by relatively high near-surface humidity through evaporative processes, which feeds back into its organization. However, in this model, this feedback is not critical for the existence of the SPCZ. The subsidence associated with the ITCZ in the North Hemisphere negatively affects the precipitation rate in the SPCZ. It was also found that the sensitivity of the forced response is largest for peak orographic heights below 3000 m, which indicates that the exact representation of the Andes in numerical models might not be as critical as that of lower orography such as that in southern Africa.es_ES
dc.description.peer-reviewPor pareses_ES
dc.formatapplication/pdfes_ES
dc.identifier.citationTakahashi, K., & Battisti, D. S. (2007). Processes controlling the mean tropical Pacific precipitation pattern. Part II: The SPCZ and the southeast Pacific dry zone. ==$Journal of Climate, 20,$==5696-5706. https://doi.org/10.1175/2007JCLI1656.1es_ES
dc.identifier.doihttps://doi.org/10.1175/2007JCLI1656.1es_ES
dc.identifier.journalJournal of Climatees_ES
dc.identifier.urihttp://hdl.handle.net/20.500.12816/2117
dc.language.isoenges_ES
dc.publisherAmerican Meteorological Societyes_ES
dc.relation.ispartofurn:issn:0894-8755
dc.rightsinfo:eu-repo/semantics/openAccesses_ES
dc.rights.urihttps://creativecommons.org/licences/by/4.0/es_ES
dc.subjectSouth pacific oceanes_ES
dc.subjectSea surface temperaturees_ES
dc.subjectIntertropical convergence zonees_ES
dc.subjectPrecipitationes_ES
dc.subjectSubsidencees_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.00es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.09es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.10es_ES
dc.subject.ocdehttp://purl.org/pe-repo/ocde/ford#1.05.11es_ES
dc.titleProcesses controlling the mean tropical Pacific precipitation pattern. Part II: The SPCZ and the southeast Pacific dry zonees_ES
dc.typeinfo:eu-repo/semantics/articlees_ES

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