The Impact of the Physical Initialization in the Global Analysis and Short Range Forecast Over South America Using the GPSAS-CPTEC/INPE Initial Conditions

HR: 0800h
AN: H51D-04 [Abstracts]
TI: The Impact of the Physical Initialization in the Global Analysis and Short Range Forecast Over South America Using the GPSAS-CPTEC/INPE Initial Conditions
AU: * Mendonca, R W
EM: renataw@cptec.inpe.br
AF: CPTEC/INPE, Rodovia Presidente Dutra km 39, Cachoeira Paulista, SP 12630-000, Brazil
AU: Bonatti, J P
EM: bonatti@cptec.inpe.br
AF: CPTEC/INPE, Rodovia Presidente Dutra km 39, Cachoeira Paulista, SP 12630-000, Brazil
AU: Mendonca, A M
EM: mendonca@cptec.inpe.br
AF: CPTEC/INPE, Rodovia Presidente Dutra km 39, Cachoeira Paulista, SP 12630-000, Brazil
AU: Souza, R V
EM: rita@cptec.inpe.br
AF: CPTEC/INPE, Rodovia Presidente Dutra km 39, Cachoeira Paulista, SP 12630-000, Brazil
AU: Sapucci, L F
EM: lsapucci@cptec.inpe.br
AF: CPTEC/INPE, Rodovia Presidente Dutra km 39, Cachoeira Paulista, SP 12630-000, Brazil
AU: Herdies, D L
EM: dirceu@cptec.inpe.br
AF: CPTEC/INPE, Rodovia Presidente Dutra km 39, Cachoeira Paulista, SP 12630-000, Brazil
AU: Aravequia, J A
EM: araveq@cptec.inpe.br
AF: CPTEC/INPE, Rodovia Presidente Dutra km 39, Cachoeira Paulista, SP 12630-000, Brazil
AB: The Brazilian Center for Weather Prediction and Climate Studies (CPTEC/INPE) seeks to improve its global analysis as well as the short range forecast over South America by assimilating precipitation. The Tropical Rainfall Measuring Mission (TRMM) merged high quality (HQ)/infrared (IR) precipitation estimates were assimilated in the atmospheric general circulation model as an initial test. The experiments were performed using the initial conditions generated by Global Physical-space Statistical Analysis System (GPSAS- CPTEC/INPE), for March 2004. Two experiments were carried out: (i) with physical initialization (PI), where the precipitation was assimilated in the region between -40oS to 40oN; and (ii) without physical initialization (no-PI). Evaluations of the impact on the prognostic variables, such as air temperature, specific humidity, and horizontal wind are provided based on comparisons with the control experiment, global analyses, and observations.
DE: 1840 Hydrometeorology
DE: 1847 Modeling
DE: 3314 Convective processes
DE: 3315 Data assimilation
DE: 3354 Precipitation (1854)
SC: Hydrology [H]
MN: 2007 Joint Assembly