%0 Journal Article
%@nexthigherunit 8JMKD3MGPCW/43SKC35
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JJ4J
%@resumeid 8JMKD3MGP5W/3C9JHKJ
%@archivingpolicy denypublisher denyfinaldraft12
%@usergroup administrator
%@usergroup deicy
%@usergroup lattes
%3 Lima_Large.pdf
%X Heavy rainfall events in austral summer are responsible for almost all the natural disasters in Southeast Brazil. They are mostly associated with two types of atmospheric perturbations: Cold Front (53%) and the South Atlantic Convergence Zone (47%). The important question of what synoptic characteristics distinguish a heavy rainfall event (HRE) from a normal rainfall event (NRE) is addressed in this study. Here, the evolutions of such characteristics are identified through the anomalies with respect to climatology of the composite fields of atmospheric variables. The anomalies associated with HRE are significantly more intense than those associated with NRE in all fundamental atmospheric variables such as outgoing long-wave radiation, sea-level pressure, 500- hPa geopotential, lower and upper tropospheric winds. The moisture flux convergence over Southeast Brazil in the HRE composites is 60% larger than in the NRE composites. The energetics calculations for the HRE that occurred in the beginning of February 1988 strongly suggest that the barotropic instability played an important role in the intensification of the perturbation. These results, especially the intensities of the wind, pressure anomalies, and the moisture convergence are useful for the meteorologists of the Southeast Brazil for forecasting heavy precipitation.
%T Large-scale atmospheric conditions associated with heavy rainfall episodes in Southeast Brazil
%@electronicmailaddress kellen.lima@cptec.inpe.br
%@electronicmailaddress saty@cptec.inpe.br
%@electronicmailaddress pablo.reyes@cptec.inpe.br
%@secondarytype PRE PI
%K rainfall, atmospheric, climatology.
%@group DMD-CPT-INPE-MCT-BR
%@group DMD-CPT-INPE-MCT-BR
%@group DMD-CPT-INPE-MCT-BR
%@e-mailaddress pablo.reyes@cptec.inpe.br
%@secondarykey INPE--PRE/
%@secondarymark A2_CIÊNCIAS_AGRÁRIAS A2_GEOCIÊNCIAS A2_GEOGRAFIA A2_INTERDISCIPLINAR
%F lattes: 0873439630646612 3 LimaSatyFern:2009:LaAtCo
%@issn 0177-798X
%2 dpi.inpe.br/plutao@80/2009/12.01.11.28.48
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%B Theoretical and Applied Climatology
%P 1434-4483
%4 dpi.inpe.br/plutao@80/2009/12.01.11.28
%D 2009
%V 0177-7
%@doi 10.1007/s00704-009-0207-9
%A Lima, Kellen Carla,
%A Satyamurty, Prakki,
%A Fernandez, Julio Pablo Reyes,
%@dissemination WEBSCI; PORTALCAPES; MGA.
%@area MET