Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime
Sea surface temperature (SST) anomalies over the tropical oceans are able to generate extratropical atmospheric circulation anomalies that can induce rainfall variability and changes in the sources of moisture. The work reported here evaluates the interdecadal changes in the moisture sources for sou...
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| Format: | article |
| Language: | English |
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2016
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| Online Access: | https://hdl.handle.net/20.500.12008/22104 |
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| _version_ | 1868890171807629312 |
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| author | Martín Gómez, Verónica |
| author2 | Hernández-García, Emilio Barreiro, Marcelo López, Cristóbal |
| author2_role | author author author |
| author_browse | Barreiro, Marcelo Hernández-García, Emilio López, Cristóbal Martín Gómez, Verónica |
| author_facet | Martín Gómez, Verónica Hernández-García, Emilio Barreiro, Marcelo López, Cristóbal |
| author_role | author |
| collection | COLIBRI |
| dc.contributor.none.fl_str_mv | Martín Gómez, Verónica. Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Física Barreiro, Marcelo. Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Física |
| dc.creator.none.fl_str_mv | Martín Gómez, Verónica Hernández-García, Emilio Barreiro, Marcelo López, Cristóbal |
| dc.date.none.fl_str_mv | 2016 2019-10-02T22:17:41Z 2019-10-02T22:17:41Z 20191001 |
| dc.format.none.fl_str_mv | application/pdf |
| dc.identifier.none.fl_str_mv | Martín Gómez, V., et al. Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime. Journal of Climate, 2016, 29 (18): 6751-6763. doi: 10.1175/JCLI-D-15-0803.1 0894-8755 https://hdl.handle.net/20.500.12008/22104 10.1175/JCLI-D-15-0803.1 |
| dc.language.none.fl_str_mv | en eng |
| dc.publisher.none.fl_str_mv | American Meteorological Society |
| dc.relation.none.fl_str_mv | Journal of Climate, 2016, 29(18): 6751-6763 |
| dc.rights.none.fl_str_mv | info:eu-repo/semantics/openAccess Licencia Creative Commons Atribución – No Comercial – Sin Derivadas (CC –BY-NC-ND 4.0) |
| dc.source.none.fl_str_mv | reponame:COLIBRI instname:Universidad de la República instacron:Universidad de la República |
| dc.subject.none.fl_str_mv | Climate variability Interdecadal variability Variability |
| dc.title.none.fl_str_mv | Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime |
| dc.type.none.fl_str_mv | Artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
| description | Sea surface temperature (SST) anomalies over the tropical oceans are able to generate extratropical atmospheric circulation anomalies that can induce rainfall variability and changes in the sources of moisture. The work reported here evaluates the interdecadal changes in the moisture sources for southeastern South America (SESA) during austral summer, and it is divided into two complementary parts. In the first part the authors construct a climate network to detect synchronization periods among the tropical oceans and the precipitation over SESA. Afterward, taking into account these results, the authors select two periods with different degrees of synchronization to compare the spatial distribution of the SESA moisture sources. Results show that during the last century there were three synchronization periods among the tropical oceans and the precipitation over SESA (during the 1930s, 1970s, and 1990s) and suggest that the main moisture sources of SESA are the recycling over the region, the central-eastern shore of Brazil together with the surrounding Atlantic Ocean, and the southwestern South Atlantic surrounding the SESA domain. Comparison of SESA moisture sources for the 1980s (a period of nonsignificant synchronization) and the 1990s (a synchronized period) shows that the principal differences are in the intensity of the recycling and in the strength of the central-eastern shore of Brazil. Moreover, the authors find that a region centered at (20°S, 300°E) is a moisture source for SESA only during the 1990s. These differences can be associated with the development of a low-level anticyclonic (cyclonic) anomaly circulation over central-eastern Brazil that favors the transport of moisture from central Brazil (central-eastern shore of Brazil) toward SESA in the 1990s (1980s) |
| eu_rights_str_mv | openAccess |
| format | article |
| id | anni_b4e3f006fc736d2ae5ac24fb256eea7a |
| identifier_str_mv | Martín Gómez, V., et al. Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime. Journal of Climate, 2016, 29 (18): 6751-6763. doi: 10.1175/JCLI-D-15-0803.1 0894-8755 10.1175/JCLI-D-15-0803.1 |
| instacron_str | Universidad de la República |
| institution | Universidad de la República |
| instname_str | Universidad de la República |
| language | eng |
| language_invalid_str_mv | en |
| network_acronym_str | anni |
| network_name_str | oai-lr-anni |
| oai_identifier_str | oai:colibri.udelar.edu.uy:20.500.12008/22104 |
| publishDate | 2016 |
| publishDateSort | 2016 |
| publisher.none.fl_str_mv | American Meteorological Society |
| reponame_str | COLIBRI |
| repository.mail.fl_str_mv | |
| repository.name.fl_str_mv | |
| repository_id_str | |
| rights_invalid_str_mv | Licencia Creative Commons Atribución – No Comercial – Sin Derivadas (CC –BY-NC-ND 4.0) |
| spelling | Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertimeMartín Gómez, VerónicaHernández-García, EmilioBarreiro, MarceloLópez, CristóbalClimate variabilityInterdecadal variabilityVariabilitySea surface temperature (SST) anomalies over the tropical oceans are able to generate extratropical atmospheric circulation anomalies that can induce rainfall variability and changes in the sources of moisture. The work reported here evaluates the interdecadal changes in the moisture sources for southeastern South America (SESA) during austral summer, and it is divided into two complementary parts. In the first part the authors construct a climate network to detect synchronization periods among the tropical oceans and the precipitation over SESA. Afterward, taking into account these results, the authors select two periods with different degrees of synchronization to compare the spatial distribution of the SESA moisture sources. Results show that during the last century there were three synchronization periods among the tropical oceans and the precipitation over SESA (during the 1930s, 1970s, and 1990s) and suggest that the main moisture sources of SESA are the recycling over the region, the central-eastern shore of Brazil together with the surrounding Atlantic Ocean, and the southwestern South Atlantic surrounding the SESA domain. Comparison of SESA moisture sources for the 1980s (a period of nonsignificant synchronization) and the 1990s (a synchronized period) shows that the principal differences are in the intensity of the recycling and in the strength of the central-eastern shore of Brazil. Moreover, the authors find that a region centered at (20°S, 300°E) is a moisture source for SESA only during the 1990s. These differences can be associated with the development of a low-level anticyclonic (cyclonic) anomaly circulation over central-eastern Brazil that favors the transport of moisture from central Brazil (central-eastern shore of Brazil) toward SESA in the 1990s (1980s)American Meteorological SocietyMartín Gómez, Verónica. Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de FísicaBarreiro, Marcelo. Universidad de la República (Uruguay). Facultad de Ciencias. Instituto de Física2019-10-02T22:17:41Z2019-10-02T22:17:41Z201620191001Artículoinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfMartín Gómez, V., et al. Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime. Journal of Climate, 2016, 29 (18): 6751-6763. doi: 10.1175/JCLI-D-15-0803.10894-8755https://hdl.handle.net/20.500.12008/2210410.1175/JCLI-D-15-0803.1reponame:COLIBRIinstname:Universidad de la Repúblicainstacron:Universidad de la RepúblicaenengJournal of Climate, 2016, 29(18): 6751-6763Las obras depositadas en el Repositorio se rigen por la Ordenanza de los Derechos de la Propiedad Intelectual de la Universidad De La República. (Res. Nº 91 de C.D.C. de 8/III/1994 – D.O. 7/IV/1994) y por la Ordenanza del Repositorio Abierto de la Universidad de la República (Res. Nº 16 de C.D.C. de 07/10/2014)info:eu-repo/semantics/openAccessLicencia Creative Commons Atribución – No Comercial – Sin Derivadas (CC –BY-NC-ND 4.0)oai:colibri.udelar.edu.uy:20.500.12008/221042026-04-14T10:09:21Z |
| spellingShingle | Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime Martín Gómez, Verónica Climate variability Interdecadal variability Variability |
| status_str | publishedVersion |
| title | Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime |
| title_full | Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime |
| title_fullStr | Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime |
| title_full_unstemmed | Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime |
| title_short | Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime |
| title_sort | Interdecadal variability of Southeastern South America rainfall and moisture sources during the austral summertime |
| topic | Climate variability Interdecadal variability Variability |
| url | https://hdl.handle.net/20.500.12008/22104 |