Interannual relations between South American rainfall and tropical sea surface temperature anomalies before and after 1976
Abstract The differences between 1948–1976 and 1977–2002 periods in the interannual relationships of South American precipitation with sea surface temperature (SST) indices in selected oceanic sectors are documented using correlation analyses. For the total correlation between the eastern equatorial...
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crwiley:10.1002/joc.1824 2024-06-23T07:55:09+00:00 Interannual relations between South American rainfall and tropical sea surface temperature anomalies before and after 1976 Kayano, Mary Toshie de Oliveira, Cristiano Prestrelo Andreoli, Rita Valéria Conselho Nacional de Desenvolvimento Científico e Tecnológico of Brazil Coordenaçäo de Aperfeiçoamento de Pessoal de Nível Superior of Brazil 2008 http://dx.doi.org/10.1002/joc.1824 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1824 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1824 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor International Journal of Climatology volume 29, issue 10, page 1439-1448 ISSN 0899-8418 1097-0088 journal-article 2008 crwiley https://doi.org/10.1002/joc.1824 2024-06-13T04:22:58Z Abstract The differences between 1948–1976 and 1977–2002 periods in the interannual relationships of South American precipitation with sea surface temperature (SST) indices in selected oceanic sectors are documented using correlation analyses. For the total correlation between the eastern equatorial Pacific (EEP) and tropical South Atlantic (TSA) indices and the precipitation, the differences between the two periods reflect, in part, the El Niño‐Southern Oscillation (ENSO) teleconnections over South America, with the Pacific decadal oscillation (PDO) background acting to enhance (weaken) the correlations when ENSO and PDO are in the same (opposite) phase. For the total correlation between the tropical North Atlantic (TNA) and southwest South Atlantic (SWA) indices and precipitation, the results here suggest that the differences between the two periods might be reflected as variations in the Bolivian high‐pressure system. Both the TNA and TSA indices may act to weaken the positive ENSO relations with precipitation over central and eastern Brazil during the cold PDO phase. These analyses provide indications that the ENSO relationship with the TSA shows differences between the two analysed periods. Copyright © 2008 Royal Meteorological Society Article in Journal/Newspaper North Atlantic Wiley Online Library Pacific International Journal of Climatology 29 10 1439 1448 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The differences between 1948–1976 and 1977–2002 periods in the interannual relationships of South American precipitation with sea surface temperature (SST) indices in selected oceanic sectors are documented using correlation analyses. For the total correlation between the eastern equatorial Pacific (EEP) and tropical South Atlantic (TSA) indices and the precipitation, the differences between the two periods reflect, in part, the El Niño‐Southern Oscillation (ENSO) teleconnections over South America, with the Pacific decadal oscillation (PDO) background acting to enhance (weaken) the correlations when ENSO and PDO are in the same (opposite) phase. For the total correlation between the tropical North Atlantic (TNA) and southwest South Atlantic (SWA) indices and precipitation, the results here suggest that the differences between the two periods might be reflected as variations in the Bolivian high‐pressure system. Both the TNA and TSA indices may act to weaken the positive ENSO relations with precipitation over central and eastern Brazil during the cold PDO phase. These analyses provide indications that the ENSO relationship with the TSA shows differences between the two analysed periods. Copyright © 2008 Royal Meteorological Society |
author2 |
Conselho Nacional de Desenvolvimento Científico e Tecnológico of Brazil Coordenaçäo de Aperfeiçoamento de Pessoal de Nível Superior of Brazil |
format |
Article in Journal/Newspaper |
author |
Kayano, Mary Toshie de Oliveira, Cristiano Prestrelo Andreoli, Rita Valéria |
spellingShingle |
Kayano, Mary Toshie de Oliveira, Cristiano Prestrelo Andreoli, Rita Valéria Interannual relations between South American rainfall and tropical sea surface temperature anomalies before and after 1976 |
author_facet |
Kayano, Mary Toshie de Oliveira, Cristiano Prestrelo Andreoli, Rita Valéria |
author_sort |
Kayano, Mary Toshie |
title |
Interannual relations between South American rainfall and tropical sea surface temperature anomalies before and after 1976 |
title_short |
Interannual relations between South American rainfall and tropical sea surface temperature anomalies before and after 1976 |
title_full |
Interannual relations between South American rainfall and tropical sea surface temperature anomalies before and after 1976 |
title_fullStr |
Interannual relations between South American rainfall and tropical sea surface temperature anomalies before and after 1976 |
title_full_unstemmed |
Interannual relations between South American rainfall and tropical sea surface temperature anomalies before and after 1976 |
title_sort |
interannual relations between south american rainfall and tropical sea surface temperature anomalies before and after 1976 |
publisher |
Wiley |
publishDate |
2008 |
url |
http://dx.doi.org/10.1002/joc.1824 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fjoc.1824 https://rmets.onlinelibrary.wiley.com/doi/pdf/10.1002/joc.1824 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
International Journal of Climatology volume 29, issue 10, page 1439-1448 ISSN 0899-8418 1097-0088 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/joc.1824 |
container_title |
International Journal of Climatology |
container_volume |
29 |
container_issue |
10 |
container_start_page |
1439 |
op_container_end_page |
1448 |
_version_ |
1802647596035997696 |