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		<citationkey>SouzaFHABGKSFM:2010:ImScDe</citationkey>
		<title>Impact of the scheme of deep convection in the global data assimilation system LETKF of the CPTEC/INPE</title>
		<format>On-line</format>
		<year>2010</year>
		<secondarytype>PRE CI</secondarytype>
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		<author>Souza, Solange Silva de,</author>
		<author>Figueroa, Silvio Nilo,</author>
		<author>Herdies, Dirceu Luis,</author>
		<author>Aravéquia, José Antônio,</author>
		<author>Bonatti, José Paulo,</author>
		<author>Gonçalves, Luis Gustavo,</author>
		<author>Kubota, Paulo Yoshio,</author>
		<author>Sapucci, Luis Fernando,</author>
		<author>Ferreira, Sérgio Henrique,</author>
		<author>Mattos, João Gerd,</author>
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		<group>DMD-CPT-INPE-MCT-BR</group>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>solange.souza@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>nilo.figueroa@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>dirceu.herdies@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>jose.aravequia@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>paulo.bonatti@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>gustavo.goncalves@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>pkubota@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>luiz.sapucci@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>sergio.ferreira@cptec.inpe.br</electronicmailaddress>
		<electronicmailaddress>jgerd@cptec.inpe.br</electronicmailaddress>
		<conferencename>The Meeting of the Americas.</conferencename>
		<conferencelocation>Foz do Iguaçu</conferencelocation>
		<date>8-12 aug. 2010</date>
		<publisher>AGU</publisher>
		<booktitle>Posters</booktitle>
		<tertiarytype>Poster Session</tertiarytype>
		<transferableflag>1</transferableflag>
		<contenttype>External Contribution</contenttype>
		<keywords>convective processes, data assimilation, global climate models.</keywords>
		<abstract>Data assimilation experiments with two different deep convection schemes were conducted at Center for Weather Forecasting and Climate Studies of the National Institute for Space Research (CPTEC/INPE). The objective of this work is to verify wether or not the deep convection parametrization scheme impact on data assimilation system of the Global Local Ensemble Transform Kalman Filter (GLETKF). The GLETKF is the Kalman Filter combined with Spectral Atmospheric Global Circulation Model (AGCM). The global model with T126L28 resolution and the convective schemes Kuo and Grell were used. The results are evaluated comparing with the analysis proceeding from the National Center for Environmental Prediction - NCEP. The results have shown that the choice of the scheme of deep convection in the CPTEC AGCM affects the analysis. The Grell scheme in comparison of Kuo scheme reduced significatively the quadratic average error in the geopotencial height fields over South America at medium and high levels (500 hPa and 250 hPa).</abstract>
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		<language>en</language>
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