%0 Conference Proceedings
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3EU29DP 8JMKD3MGPCW/3F3T29H
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JJ2E
%@resumeid 8JMKD3MGP5W/3C9JHD4
%B International Conference on Atmospheric Electricity, 14.
%X A Cloud-to-Ground (CG) lightning data provided by Brazilian lightning detection network (BrasilDAT) for a ten years period (1999  2008) and Particulate Matter (PM) data from Environmental agency of Sao Paulo State (CETESB) for the same period, were examined in order to look for the influence of urban effect and weekly cycles in lightning activity over Metropolitan Region of São Paulo (MRSP). The results show that there is a significant weekly cycle in PM10 10  over the MRSP and lightning activity (CG lightning) on area involving the MRSP, Campinas and Sao Jose dos Campos regions, both with reduction on the weekend. Besides, was found a significant weekly cycle in number of day with lightning over MRSP. We also examined the average number of flash per storm and air temperature in three different ranges of PM  concentrations. For the first one, there is an increase of the average number of flash per storm from low to intermediate range and a trend to decrease from intermediate to high range. However, the air temperature tends to stay the same in all ranges. These results suggest that the pollution tends to saturate the intensification of storms and lightning activity in a specific level. After that, the increase of aerosols provided by pollution tends to decrease the lightning activity.
%@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
%T The influence of urban effect on lightning activity: Evidence of weekly cycle
%@electronicmailaddress wfarias@dge.inpe.br
%@electronicmailaddress osmar@dge.inpe.br
%@electronicmailaddress iara@dge.inpe.br
%@electronicmailaddress kleber.naccarato@inpe.br
%@secondarytype PRE CI
%K Lightning, Cloud-to-Ground (CG) lightning data.
%8 8-12 Aug
%@usergroup administrator
%@usergroup secretaria.cpa@dir.inpe.br
%@group DGE-CEA-INPE-MCT-BR
%@group DGE-CEA-INPE-MCT-BR
%@group DGE-CEA-INPE-MCT-BR
%@group CST-CST-INPE-MCT-BR
%@e-mailaddress secretaria.cpa@dir.inpe.br
%3 W. Farias - The influence of urban effect on lightning activity Evidence of weekly cycle.pdf
%@secondarykey INPE--PRE/
%2 sid.inpe.br/mtc-m19/2012/01.03.13.18.19
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@versiontype publisher
%4 sid.inpe.br/mtc-m19/2012/01.03.13.18
%@documentstage not transferred
%D 2011
%S Proceedings
%A Farias, Wendell Rondinelli Gomes,
%A Pinto Júnior, Osmar,
%A Pinto, Iara Regina Cardoso de Almeida,
%A Naccarato, Kleber Pinheiro,
%C Rio de Janeiro
%@area CEA