A importância da temperatura de superfície do Oceano Atlântico Sul na avaliação do impacto nas mudanças de regime do Sistema de Monção da América do Sul (SMAS) (2024)
- Authors:
- Autor USP: DAMASCENO, IVANA PEREIRA - IO
- Unidade: IO
- Sigla do Departamento: IOF
- Assunto: OCEANOGRAFIA FÍSICA
- Language: Português
- Abstract: Monsoons are climatic phenomena associated with seasonal changes in the direction of prevailing winds in a region, resulting in rainy and dry seasons in the tropics. In South America, precipitation follows a well-defined annual cycle, with dry winters and rainy summers, characterizing the South American Monsoon System (SAMS). Understanding monsoons, which influence rainfall distributions, is crucial due to their impact on the occurrence of extreme drought and flood events, as well as on water resource availability. The main objective of this project was to assess the ability of the atmospheric component (LMDZ - Laboratory of Dynamic Methods) of the Earth system model from the Pierre Simon Laplace Institute (IPSL) to reproduce SAMS variability, considering the possible influence of sea surface temperature (SST). To do so, the total precipitation and specific humidity climatology were calculated from simulated and observational data, which satisfactorily captured the region's climatic patterns. Additionally, by investigating the uncertainties associated with each of the 13 simulations, an irregular distribution was noted throughout the analyzed region in all considered variables (precipitation, specific humidity, and zonal and meridional wind stress). The calculated linear trends exhibited a behavior similar to previous studies. When analyzing the time series of the variables' simulations in the selected regions (north, northeast, and ZCAS), a greater dispersion among the simulations was observed in the ZCAS region in all variables, except for the meridional wind stress. In the analysis of Atlantic variability modes with precipitation, a positive correlation was identified between AZM and the north and northeast regions of Brazil, while an opposite relationship was observed in the AMM analysis, which showed a negative association with precipitation on the east coast of South America.
- Imprenta:
- Data da defesa: 29.05.2024
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ABNT
DAMASCENO, Ivana Pereira. A importância da temperatura de superfície do Oceano Atlântico Sul na avaliação do impacto nas mudanças de regime do Sistema de Monção da América do Sul (SMAS). 2024. Dissertação (Mestrado) – Universidade de São Paulo, São Paulo, 2024. Disponível em: https://doi.org/10.11606/D.21.2024.tde-29072024-145023. Acesso em: 04 mar. 2026. -
APA
Damasceno, I. P. (2024). A importância da temperatura de superfície do Oceano Atlântico Sul na avaliação do impacto nas mudanças de regime do Sistema de Monção da América do Sul (SMAS) (Dissertação (Mestrado). Universidade de São Paulo, São Paulo. Recuperado de https://doi.org/10.11606/D.21.2024.tde-29072024-145023 -
NLM
Damasceno IP. A importância da temperatura de superfície do Oceano Atlântico Sul na avaliação do impacto nas mudanças de regime do Sistema de Monção da América do Sul (SMAS) [Internet]. 2024 ;[citado 2026 mar. 04 ] Available from: https://doi.org/10.11606/D.21.2024.tde-29072024-145023 -
Vancouver
Damasceno IP. A importância da temperatura de superfície do Oceano Atlântico Sul na avaliação do impacto nas mudanças de regime do Sistema de Monção da América do Sul (SMAS) [Internet]. 2024 ;[citado 2026 mar. 04 ] Available from: https://doi.org/10.11606/D.21.2024.tde-29072024-145023
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