A Look at Amazon Basin Seasonal Dynamics with the Biophysical ...
A Look at Amazon Basin Seasonal Dynamics with the Biophysical ... A Look at Amazon Basin Seasonal Dynamics with the Biophysical ...
Relationship between CAPE and Bolivian High during Wet-AMC-LBAMaria Aurora Santos da MotaUniversidade Federal do Pará/Instituto Nacional de Pesquisas EspaciaisCentro de Previsão de Tempo e Estudos ClimáticosRodovia Presidente Dutra, Km 40, SP-RJ- 12630-000, Cachoeira Paulista, SP, BrasilPhone: +55 12 5608562 - email: aurora@cptec.inpe.brABSTRACTRadiosonde date from the Wet Season Atmospheric Mesoscale Campaign of the LargeScale Biosphere Atmosphere Experiment in Amazônia (January and February 1999) heldin Rondônia-Brazil, rainfall date sets as well as the global analysis from CPTEC were usedin this study. Analysis of the transient variability of convective available potential energy(CAPE) and any possible relationship with Bolivian high and convective activity wascarried out. Results show that there is a direct relationship between CAPE and vorticityfield in 250 hPa, in the studied period. When CAPE increases, anticyclonic vorticity alsoincreases, if CAPE decreases cyclonic vorticity appears in the region. This means thatwhen CAPE is released for formation of the deep convection event, it will occurconvergence in the low levels with rising motion and divergence in the upper tropospherefavoring thus the formation of the Bolivian high.
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Rel<strong>at</strong>ionship between CAPE and Bolivian High during Wet-AMC-LBAMaria Aurora Santos da MotaUniversidade Federal do Pará/Instituto Nacional de Pesquisas EspaciaisCentro de Previsão de Tempo e Estudos ClimáticosRodovia Presidente Dutra, Km 40, SP-RJ- 12630-000, Cachoeira Paulista, SP, BrasilPhone: +55 12 5608562 - email: aurora@cptec.inpe.brABSTRACTRadiosonde d<strong>at</strong>e from <strong>the</strong> Wet Season Atmospheric Mesoscale Campaign of <strong>the</strong> LargeScale Biosphere Atmosphere Experiment in Amazônia (January and February 1999) heldin Rondônia-Brazil, rainfall d<strong>at</strong>e sets as well as <strong>the</strong> global analysis from CPTEC were usedin this study. Analysis of <strong>the</strong> transient variability of convective available potential energy(CAPE) and any possible rel<strong>at</strong>ionship <strong>with</strong> Bolivian high and convective activity wascarried out. Results show th<strong>at</strong> <strong>the</strong>re is a direct rel<strong>at</strong>ionship between CAPE and vorticityfield in 250 hPa, in <strong>the</strong> studied period. When CAPE increases, anticyclonic vorticity alsoincreases, if CAPE decreases cyclonic vorticity appears in <strong>the</strong> region. This means th<strong>at</strong>when CAPE is released for form<strong>at</strong>ion of <strong>the</strong> deep convection event, it will occurconvergence in <strong>the</strong> low levels <strong>with</strong> rising motion and divergence in <strong>the</strong> upper tropospherefavoring thus <strong>the</strong> form<strong>at</strong>ion of <strong>the</strong> Bolivian high.
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