%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3EUPEJL
%@nexthigherunit 8JMKD3MGPCW/43SKC35
%@archivingpolicy denypublisher denyfinaldraft12
%@issn 0177-7971
%@usergroup Simone
%@usergroup administrator
%@usergroup simone
%3 determination.sanches-ccoyllo.pdf
%B Meteorology and Atmospheric Physics
%@group DMD-INPE-MCT-BR
%@group CPT-INPE-MCT-BR
%@group
%@group DMD-INPE-MCT-BR
%@dissemination WEBSCI; PORTALCAPES; COMPENDEX.
%X This study is aimed to qualitatively analyze the impact of remote sources on air pollution in the Metropolitan Area of São Paulo (MASP). Air-mass back trajectories from June to August of 1999 were calculated using a three-dimensional kinematic trajectory model and grouped into trajectory clusters. Correlations of individual trajectory clusters with O3, CO and PM10 concentrations were determined. In this model, trajectories were obtained using the means of the three wind velocity components (U, V and W). The threedimensional wind field was derived from the Regional Atmospheric Modeling System, and downscaling was employed. Coarse and fine nested grids (64-km and 16-km horizontal resolution, respectively) were used. Every 12h (at 00 and 12 UTC), a back-trajectory ensemble, using the 64-km grid, was calculated for five defined endpoints at intervals of 0.5 N, S, E and Wof the MASP (¼23330S,¼46450W), that last endpoint being centered in the MASP. To analyze cluster trajectories, the five trajectory ensembles from each day were allocated into one of four clusters (northeast, southeast, southwest or northwest quadrant) based on the origin of the trajectory over 4 days. Days on which all five trajectories originated from the same quadrant were classified as core days. Core day concentrations of CO, O3 and PM10 during the study period were evaluated. The results show that, during the study period, air-mass back trajectories in the MASP originated from all four quadrants: northeast (32%), southeast (12%), southwest (19%) and northwest (37%). Our analysis of backtrajectory clusters in the MASP suggests a transport to ambient air of O3 precursors and O3 from the northeast region, which is associated with agricultural activities involving biomass burning.
%8 feb.
%N 01-02
%T Determination of 03-, CO- and PM10-  transport in the metropolitan área of São Paulo, Brazil trough synoptic- scale analysis of back trajectories
%@secondarytype PRE PI
%K synoptic-scale, pollution, three-dimensional.
%@e-mailaddress atus@cptec.inpe.br
%@secondarykey INPE-13814-PRE/9000
%@copyholder SID/SCD
%2 sid.inpe.br/iris@1915/2005/12.13.12.23.57
%@affiliation Instituto Nacional de Pesquias Espaciais (INPE), Centro de Previsão de Tempo e Estudos Climáticos(CPTEC).
%@affiliation Instituto Nacional de Pesquias Espaciais (INPE), Centro de Previsão de Tempo e Estudos Climáticos(CPTEC).
%@affiliation Institute of Astronomy, Geophysics and Atmospheric Sciences
%@affiliation Instituto Nacional de Pesquias Espaciais (INPE), Centro de Previsão de Tempo e Estudos Climáticos(CPTEC).
%P 83-93
%4 sid.inpe.br/iris@1915/2005/12.13.12.23
%@documentstage simone
%D 2006
%V 92
%A Sanches-Ccoyllo, O. R.,
%A Silva Dias, Pedro Leite,
%A Andrade, Maria de Fatima,
%A Freitas, Saulo Ribeiro,
%@area MET