%0 Journal Article
%@nexthigherunit 8JMKD3MGPCW/46JKC45
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@archivingpolicy denypublisher denyfinaldraft24
%@issn 0269-7491
%@resumeid
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JHR6
%@usergroup administrator
%3 Goncalves_Prelimnary stimation.pdf
%@dissemination WEBSCI; PORTALCAPES.
%X Numerical modeling of scavenging processes has been compared with data obtained for rainwater and aerosol chemistry at Serra do Navio, in the state of Amapa´ in the Brazilian Amazon region. Sulfate, nitrate and ammonium concentrations were determined in rainwater samples collected from May 1995 until June 1997. The levels of these same chemicals were also determined in aerosols for the same period and region. Scavenging processes have been evaluated on a rainfall event basis, via numerical modeling, in order to simulate the rainwater concentrations and compare them with the observed data. RAMS (Regional Atmospheric Modeling System) was used to simulate cloud structures. A model of below-cloud scavenging was evaluated, as well. The determinations made from the results of the scavenging model are the following: a) aerosol vertical profiles are quite important to rainwater concentrations; b) modeled sulfate in rainwater is a better fit to the observed data values than ammonium and nitrate; c) the obtained sulfate aerosol concentrations samples are similar to ones found in the literature, although the sulfate concentrations in rainwater are much lower than other studies in the literature; d) the in-cloud scavenging process dominates, e) our modeled results, using an input gas vertical profile extracted from the ABLE2B experimental data set, present a smaller ratio between gas and aerosol scavenging than found in other studies in the literature, other studies may have had larger rainfall times, which increase the importance of gas phase scavenging.
%N 1
%@secondarydate 20020402
%T Preliminary estimation of the rainfall chemical composition evaluated through the scavenging modeling for north-eastern Amazonian region (Amapa State, Brazil)
%K numerical modelling, rainfall, aerosol chemistry.
%@secondarytype PRE PI
%@group DMA-INPE-MCT-BR
%@e-mailaddress valdire@cptec.inpe.br
%@copyholder SID/SCD
%@secondarykey INPE-10147-PRE/5675
%2 cptec.inpe.br/walmeida/2003/12.02.10.14.29
%@affiliation Department of Atmospheric Sciences, IAG-USP, Rua do Mata˜o, 1226, Cidade Universita´ ria,
%@affiliation Centro de Previsao de Tempo e Estudos Climaticos - CPTEC/INPE
%@affiliation NUPEGEL, Nucleo de Pesquisa en GeoquImica e Geofisica da Litosfera, Escola Superior de Argricultura ‘‘Luiz de Queiroz’’, USP,
%B Environmental Pollution
%@language English
%P 63-73
%4 cptec.inpe.br/walmeida/2003/12.02.10.14
%D 2003
%V 121
%A Goncalves, F. L. T.,
%A Andrade, M. F.,
%A Forti, Maria Cristina,
%A Astolfo, R.,
%A Ramos, M. A.,
%A Massambani, O.,
%A Melfi, A. J.,
%@area MET