%0 Journal Article
%@nexthigherunit 8JMKD3MGPCW/43SKC35
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@archivingpolicy denypublisher denyfinaldraft12
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JHST
%@usergroup administrator
%@usergroup deicy
%3 determination.pdf
%X The present work provides a new methodology to determine onset dates of the rainy season (ONR) in central Amazon (CAM) using the antisymmetric in relation to the equator outgoing longwave radiation (OLR) (AOLR) data, for the 19792006 period. Spatial averages of the AOLR () over the CAM for the ONR periods are obtained. These periods correspond to 25 pentads centered on the mean pentad for the ONR. The sign changes from positive to negative of the  for the ONR periods indicate the transition from dry to wet season. Composites of several variables are done for pentads before and after the ONR dates. These composites show physically consistent features. The potential of the  time series as an index for monitoring tasks is analyzed. The results here show that the  for the ONR period captures the transition from dry to wet conditions in the CAM area during 2006. The advantages of this method are discussed. The new simple method proposed here seems to be efficient in determining the ONR in the CAM.
%@mirrorrepository sid.inpe.br/mtc-m18@80/2008/03.17.15.17.24
%8 Aug
%N 3-4
%T Determination of the onset dates of the rainy season in central Amazon with equatorialy antisymetric outgoing longwave radiation
%@electronicmailaddress samia.garcia@cptec.inpe.br
%@electronicmailaddress mary.kayano@cptec.inpe.br
%@secondarytype PRE PI
%K Monsoon, precipitation, circulation, hemiosphere, South America.
%@group DMD-CPT-INPE-MCT-BR
%@group DMD-CPT-INPE-MCT-BR
%@e-mailaddress deicy@cptec.inpe.br
%@secondarykey INPE--PRE/
%@secondarymark A2_CIÊNCIAS_AGRÁRIAS A2_GEOCIÊNCIAS A2_GEOGRAFIA A2_INTERDISCIPLINAR
%@issn 0177-798X
%2 sid.inpe.br/mtc-m18@80/2009/08.05.16.36.45
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%B Theoretical and Applied Climatology
%P 361-372
%4 sid.inpe.br/mtc-m18@80/2009/08.05.16.36
%D 2009
%V 97
%@doi 10.1007/s00704-008-0080-y
%A Garcia, Sâmia R.,
%A Kayano, Mary Toshie,
%@dissemination WEBSCI; PORTALCAPES; MGA.
%@area MET