Reconstruction of Brazil Current mesoscale dynamics from sea surface temperature

• Grant number: 10/13629-6
• Support Opportunities: Scholarships in Brazil - Master
• Start date: March 01, 2011
• End date: June 30, 2013
• Field of knowledge: Physical Sciences and Mathematics - Oceanography - Physical Oceanography
• Principal Investigator: Ilson Carlos Almeida da SIlveira
• Grantee: César Barbedo Rocha
• Host Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated scholarship(s): 12/02119-2 - Reconstruction of Brazil current mesoscale dynamics from sea surface temperature, BE.EP.MS

Abstract

In this project, we propose to evaluate a method to recover the Brazil Current (BC) mesoscaledynamics from sea surface temperature (SST) imagery. To do that, we will use a model basedon the Surface quasi-geostrophic (SQG) theory [Held et al., 1995]. Our hypothesis is that theBC has a potential vorticity structure essentialy trapped to the surface/subsurface (0-200 m), sothat it is possible to use a SQG approach in its domain. We propose to evaluate this method intrhee different locations (22, 25 e 28oS), whithin which the BC has different dynamical characteristics. The validation/verification will be done by comparing the modeled velocity againsttime series in-situ measurements. These method is a dynamical way to estimate surface andsubsurface velocity fields. So that, we can use it in BC dynamical studies and as a dynami-cally consistent method for assimilating SST in numerical models for ocean prediction, whichis important for the oil industry activities in this region.

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)

ROCHA, CESAR B.; DA SILVEIRA, ILSON C. A.; CASTRO, BELMIRO M.; LIMA, JOSE ANTONIO M.. Vertical structure, energetics, and dynamics of the Brazil Current System at 22 degrees S-28 degrees S. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, v. 119, n. 1, p. 52-69, JAN 2014. (10/13629-6, 08/58101-9, 12/02119-2)

ROCHA, CESAR B.; TANDON, AMIT; DA SILVEIRA, ILSON C. A.; LIMA, JOSE ANTONIO M.. Traditional quasi-geostrophic modes and surface quasi-geostrophic solutions in the Southwestern Atlantic. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, v. 118, n. 5, p. 2734-2745, MAY 2013. (10/13629-6, 12/02119-2)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

ROCHA, César Barbedo. Energetics, baroclinic instability and models of vertical structure in the Brazil Current region (22S-28S). 2013. Master's Dissertation - Universidade de São Paulo (USP). Instituto Oceanográfico (IO/DIDC) São Paulo.