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Wave-mean flow interaction and atmospheric superrotation in terrestrial planets

Grant number: 12/13202-8
Support Opportunities:Scholarships abroad - Research Internship - Doctorate
Effective date (Start): September 20, 2012
Effective date (End): June 19, 2013
Field of knowledge:Physical Sciences and Mathematics - Geosciences - Meteorology
Principal Investigator:Tercio Ambrizzi
Grantee:João Rafael Dias Pinto
Supervisor: Jonathan L. Mitchell
Host Institution: Instituto de Astronomia, Geofísica e Ciências Atmosféricas (IAG). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: University of California, Los Angeles (UCLA), United States  
Associated to the scholarship:10/15174-6 - General Circulation and the atmospheric superotation of Titã, BP.DR

Abstract

The general circulation of slowly-rotating planets, such as Venus and Titan, differs from that observed in other planets. This regime is characterized by a prograde superrotating zonal flow which has a larger angular momentum than the underlying solid surface. It is required from transient eddies the convergence of angular momentum in the equatorial region in order to maintain such winds. However, the physical processes present in this phenomenon are still unclear. Therefore, this project aims to understand the main equatorial mechanisms in wave-mean flow interaction processes that drive the atmospheric superrotation. These analyses will asses the mechanism behind this phenomenon and will also enable an improvement of its simulation in numerical models. (AU)

Matéria(s) publicada(s) na Revista Pesquisa FAPESP sobre a bolsa::
Atmósfera revuelta 
Perturbed atmosphere 
Perturbed atmosphere 
Perturbed atmosphere 
Atmósfera revuelta 
News published in Agência FAPESP Newsletter about the scholarship:
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VEICULO: TITULO (DATA)
VEICULO: TITULO (DATA)

Scientific publications
(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)
DIAS PINTO, JOAO RAFAEL; MITCHELL, JONATHAN LLOYD. Atmospheric superrotation in an idealized GCM: Parameter dependence of the eddy response. ICARUS, v. 238, p. 93-109, . (10/15174-6, 12/13202-8)
DIAS PINTO, JOAO RAFAEL; MITCHELL, JONATHAN LLOYD. Wave-Mean Flow Interactions and the Maintenance of Superrotation in a Terrestrial Atmosphere. JOURNAL OF THE ATMOSPHERIC SCIENCES, v. 73, n. 8, p. 3181-3196, . (10/15174-6, 12/13202-8)

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