Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/8266
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dc.contributor.authorallMiyakoda, K.; Princeton Universityen
dc.contributor.authorallCherchi, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.authorallNavarra, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.authorallMasina, S.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.authorallPloshay, J.; GFDL, NJ, USAen
dc.date.accessioned2012-10-18T07:29:31Zen
dc.date.available2012-10-18T07:29:31Zen
dc.date.issued2012-02-29en
dc.identifier.urihttp://hdl.handle.net/2122/8266en
dc.description.abstractEl Nino-Southern Oscillation (ENSO) is an important air-sea coupled phenomenon that plays a dominant role in the variability of the tropical regions. Observations, atmospheric and oceanic reanalysis datasets are used to classify ENSO and non-ENSO years to investigate the typical features of its periodicity and atmospheric circulation patterns. Among non-ENSO years, we have analyzed a group, called type-II years, with very small SST anomalies in summer that tend to weaken the correlation between ENSO and precipitation in the equatorial regions. A unique character of ENSO is studied in terms of the quasi-biennial periodicity of SST and heat content (HC) fields over the Pacific-Indian Oceans. While the SST tends to have higher biennial frequency along the Equator, the HC maximizes it into two centers in the western Pacific sector. The north-western center, located east of Mindanao, is strongly correlated with SST in the NINO3 region. The classification of El Nino and La Nina years, based on NINO3 SST and north-western Pacific HC respectively, has been used to identify and describe temperature and wind patterns over an extended-ENSO region that includes the tropical Pacific and Indian Oceans. The description of the spatial patterns within the atmospheric ENSO circulation has been extended to tropospheric moisture fields and low-level moisture divergence during November–December–January, differentiating the role of El Nino, when large amounts of condensational heat are concentrated in the central Pacific, from La Nina that tends to mainly redistribute heat to Maritime Continents and higher latitudes. The influence of the described mechanisms on equatorial convection in the context of the variability of ENSO on longer timescales for the end of the 20th century is questioned. However, the inaccuracy of the atmospheric reanalysis products in terms of precipitation and the shorter time length of more reliable datasets hamper a final conclusion on this issue.en
dc.language.isoEnglishen
dc.publisher.nameMeteorological Society of Japanen
dc.relation.ispartofJournal of the Meteorological Society of Japanen
dc.relation.ispartofseries1/90(2012)en
dc.subjectENSOen
dc.subjectatmospheric heatingen
dc.subjectbiennial variabilityen
dc.titleENSO and its effects on the atmospheric heating processesen
dc.typearticleen
dc.description.statusPublisheden
dc.type.QualityControlPeer-revieweden
dc.description.pagenumber35-57en
dc.identifier.URLhttps://www.jstage.jst.go.jp/article/jmsj/90/1/90_1_35/_pdfen
dc.subject.INGV01. Atmosphere::01.01. Atmosphere::01.01.02. Climateen
dc.subject.INGV01. Atmosphere::01.01. Atmosphere::01.01.04. Processes and Dynamicsen
dc.identifier.doi10.2151/jmsj.2012-103en
dc.description.obiettivoSpecifico3.7. Dinamica del clima e dell'oceanoen
dc.description.journalTypeJCR Journalen
dc.description.fulltextopenen
dc.contributor.authorMiyakoda, K.en
dc.contributor.authorCherchi, A.en
dc.contributor.authorNavarra, A.en
dc.contributor.authorMasina, S.en
dc.contributor.authorPloshay, J.en
dc.contributor.departmentPrinceton Universityen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.departmentIstituto Nazionale di Geofisica e Vulcanologia, Sezione Bologna, Bologna, Italiaen
dc.contributor.departmentGFDL, NJ, USAen
item.openairetypearticle-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
crisitem.author.deptPrinceton University-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia-
crisitem.author.deptCMCC, Italy-
crisitem.author.deptIstituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione Bologna, Bologna, Italia-
crisitem.author.deptGFDL, NJ, USA-
crisitem.author.orcid0000-0002-0178-9264-
crisitem.author.orcid0000-0001-6273-7065-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.author.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.classification.parent01. Atmosphere-
crisitem.classification.parent01. Atmosphere-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
crisitem.department.parentorgIstituto Nazionale di Geofisica e Vulcanologia-
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