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Multi-scale interactions in the atmosphere


The goal of this project is to study the dynamics of the resonant nonlinear wave interactions in a global, baroclinic, non-hydrostatic atmospheric model and to analyze the possible role of these interactions in generating low-frequency fluctuations in the atmospheric flow. These interactions will be analyzed in an idealized setting, with the waves being embedded in a motionless, hydrostatic, horizontally homogeneous and stably stratified background atmosphere. Further investigations can also be made, depending on the progress of the project, in order to analyze the dynamics of the resonant nonlinear wave interactions for the case of more complex and realistic background states. In this case, we will first consider the hydrostatic limit of the governing equations. We plan with this study to gain a further theoretical understanding on the multi-scale interaction processes in the atmosphere, given that both theoretical and modeling studies have pointed out the importance of the these multi-scale interactions in the generation of low-frequency anomalies in the atmospheric circulation. The importance of the present proposal can be inferred from the growing agreement by the scientific community in atmospheric sciences on the need of using high resolution atmospheric models in seasonal forecast as well as in even longer period climate simulations. (AU)

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Scientific publications (4)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
WAKATE TERUYA, ANDRE SEIJI; MENDONCA RAUPP, CARLOS FREDERICO. Nonlinear interaction of gravity and acoustic waves. TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY, v. 72, n. 1, p. 1-17, JAN 1 2020. Web of Science Citations: 0.
RAUPP, CARLOS F. M.; TERUYA, ANDRE S. W.; SILVA DIAS, PEDRO L. Linear and Weakly Nonlinear Energetics of Global Nonhydrostatic Normal Modes. JOURNAL OF THE ATMOSPHERIC SCIENCES, v. 76, n. 12, p. 3831-3846, DEC 2019. Web of Science Citations: 1.
RAMIREZ, ENVER; DIAS, PEDRO L. DA SILVA; RAUPP, CARLOS F. M. Multiscale Atmosphere-Ocean Interactions and the Low-Frequency Variability in the Equatorial Region. JOURNAL OF THE ATMOSPHERIC SCIENCES, v. 74, n. 8, p. 2503-2523, AUG 2017. Web of Science Citations: 2.
RAUPP, CARLOS F. M.; DIAS, PEDRO L. SILVA. Interaction of equatorial waves through resonance with the diurnal cycle of tropical heating. TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY, v. 62, n. 5, p. 706-718, OCT 2010. Web of Science Citations: 4.

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