Energetics of the normal modes of the Nonhydrostatic atmospheric dynamics
| Grant number: | 09/11643-4 |
| Support type: | Research Grants - Young Investigators Grants |
| Duration: | January 01, 2010 - December 31, 2013 |
| Field of knowledge: | Physical Sciences and Mathematics - Geosciences |
| Principal Investigator: | Carlos Frederico Mendonça Raupp |
| Grantee: | Carlos Frederico Mendonça Raupp |
| Home Institution: | Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil |
| Associated grant(s): | 13/50204-1 - Long-short wave interactions in the atmospheric dynamics, AP.R |
| Associated scholarship(s): | 12/06388-8 - Energetics of the normal modes of the Nonhydrostatic atmospheric dynamics, BP.MS |
Abstract
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)