Dry to Wet Transition Simulation with Dynamic Vegetation
Demerval
Soares
Moreira, Department of Atmospheric Sciences, Institute of Astronomy and Geophysics, University of São Paulo, demerval@master.iag.usp.br
(Presenting)
Pedro
Leite
Silva Dias, Department of Atmospheric Sciences, Institute of Astronomy and Geophysics, University of São Paulo, pldsdias@master.iag.usp.br
Adriana
Beltran, Department of Atmospheric Sciences, Colorado State Universit, abeltran@dragon.atmos.colostate.edu
Roger
Pielke, Department of Atmospheric Sciences, Colorado State Universit, pielke@atmos.colostate.edu
A downscaling with the Regional Atmospheric Modeling System (RAMS) coupled with the General Energy and Mass Transport Model (GEMTM) will be performed for the RaCCI period (September and October, 2002). This period represents the transition between the dry to the rainy season in Rondonia, located in the South-western Amazon Basin. The vegetation parameters (leaf area index, albedo, CO2 flux, etc.) change significantly from September to October, and affect directly the latent and sensible flux. Therefore, in a long period simulation, these changes must be considered. The GEMTM model was developed to forecast the dynamic interactions between land surfaces and the atmosphere. Thus in the coupling GEMTM provides to RAMS these new parameters. The results will be compared with data from METAR, SYNOP and RaCCI campaign, as well as with the downscaling results from RAMS without GEMTM.