| Texto completo | |
| Autor(es): |
Santos, Daniel M. C.
;
Bernardo, Piero S.
;
Polito, Paulo S.
;
Sato, Olga T.
Número total de Autores: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS; v. 203, p. 10-pg., 2024-01-06. |
| Resumo | |
The South Atlantic subtropical mode water (SASTMW) is a conspicuous volume of water formed during winter and early spring that occupies the mid -latitudes of the South Atlantic. Here, we aim to investigate the interannual variability of the SASTMW's volume in response to remote processes influenced by atmospheric teleconnection. We utilized the Simple Ocean Data Assimilation (SODA) ocean reanalysis to identify this particular mode water. The SASTMW's volume time series underwent a shift during the early aughts, with the frequency spectrum changing from broad and sparse interannual peaks during 1980-2001 to narrow and frequent peaks during 2002-2018, following the interdecadal shift of El Nin similar to o-Southern Oscillation (ENSO) that occurred in 1999. Hence, the influence of ENSO on SASTMW was evaluated for each of the two periods. From 1980 to 2001, in the western side of the basin, SASTMW's volume reached its peak 21 months after the occurrence of an El Nin similar to o, and after 43 months it became thinner. The opposite pattern occurred after a La Nin similar to a event, with stronger events having a greater impact on the SASTMW. In the 2002-2018 period, the largest correlations were observed in the eastern part of the basin, with significantly shorter lags of 6-20 months. (AU) | |
| Processo FAPESP: | 17/23133-7 - Variabilidade interanual da água modal subtropical do Atlântico Sul associada à padrões climáticos remotos |
| Beneficiário: | Daniel Melo Costa Santos |
| Modalidade de apoio: | Bolsas no Brasil - Iniciação Científica |
| Processo FAPESP: | 15/26450-8 - Investigando a formação e manutenção da Água Modal Subtropical do Atlântico Sul (SAMOWA) |
| Beneficiário: | Olga Tiemi Sato |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |