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		<citationkey>RossatoSouz:2018:MeDiPa</citationkey>
		<title>Medidas diretas e parametrizações bulk dos fluxos de calor entre o oceano e a atmosfera no atlântico equatorial</title>
		<year>2018</year>
		<secondarytype>PRE CN</secondarytype>
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		<author>Rossato, Fernando,</author>
		<author>Souza, Ronald Buss de,</author>
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		<group></group>
		<group>SEPAN-COCRE-INPE-MCTIC-GOV-BR</group>
		<affiliation></affiliation>
		<affiliation>Instituto Nacional de Pesquisas Espaciais (INPE)</affiliation>
		<electronicmailaddress>rossato.fernando@hotmail.com</electronicmailaddress>
		<electronicmailaddress>ronald.buss@inpe.br</electronicmailaddress>
		<conferencename>Congresso Brasileiro de Meteorologia (CBMET)</conferencename>
		<conferencelocation>Maceió, AL</conferencelocation>
		<date>27-30 nov.</date>
		<booktitle>Anais</booktitle>
		<transferableflag>1</transferableflag>
		<contenttype>External Contribution</contenttype>
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		<keywords>Fluxos de calor entre o oceano e a atmosfera, Oceano Atlântico Equatorial, Projeto PIRATA, Ocean-atmosphere heat fluxes, Equatorial Atlantic Ocean, PIRATA Project.</keywords>
		<abstract>Utilizando uma torre micrometeorológica, medidas diretas de fluxos de calor sensível (H) e latente (Le) foram feitas a bordo do Navio de Pesquisa Hidroceanográfico Vital de Oliveira, no período entre 14 de novembro e 6 de dezembro de 2017, em sua derrota ao longo do meridiano 38oW durante o cruzeiro XVII do projeto PIRATA Brasil (Prediction and Research Moored Array in the Tropical Atlantic). Usando dados meteorológicos e oceanográficos, os fluxos de calor também foram estimados a partir de parametrizações bulk. Este estudo descreve pela primeira vez as medidas diretas e as estimativas durante o período desse estudo, assim como as diferenças entre H e Le obtidos através do método Covariância dos Vórtices (CV) e pelas parametrizações bulk. As séries de tempo de fluxos de calor via CV e bulk apresentaram uma variabilidade bastante semelhante, especialmente para a magnitude de Le. O método bulk em geral subestimou H em relação ao método CV. O H médio foi 12 W/m² com o método CV e 5 W/m² com o bulk, e houve uma dependência das séries com a diferença entre a TSM e a temperatura do ar. Já para Le, as magnitudes apresentadas pelos métodos diferiram, com o método bulk, na média da série temporal, superestimando substancialmente Le em relação à CV (117 W/m² para bulk e 48 W/m² para CV). Para o ambos os fluxos, mas especialmente para Le, as maiores diferenças entre os dois métodos ocorreram sob condições de ventos fortes. ABSTRACT: Using a micrometeorololical tower, direct measurements of sensible (H) and latent (Le) heat fluxes were performed onboard the Brazilian Navy Research Ship Vital de Oliveira, during the period between 14 November and 6 December 2017, along her route on the 38 oW meridian during the 17th cruise of the PIRATA Brazil (Prediction and Research Moored Array in the Tropical Atlantic) project. Using conventional meteorological and oceanographic data, the heat fluxes were also estimated from bulk parameterizations. The present study describes for the first time the direct measurements and the estimates, as well as the differences between H and Le taken from the Eddy Covariance method (EC) and by the bulk parameterizations. Both the EC and bulk time series presented a very similar variability, especially for the Le magnitude. The bulk method, in general, sub estimated H in respect to the EC method. The mean sensible heat flux was 12 W/m² for the EC method whereas it was 5 W/m² for bulk, and there were a dependency of the series with the difference between the sea surface temperature and the air temperature. For Le, the magnitudes presented by both methods differed, with the bulk method, in the temporal mean of the time series, super estimating substantially Le in respect to the EC (117 W/m² for the bulk estimate and 48 W/m² for EC). For both heat fluxes but especially for Le, the major differences between the tow methods occurred on strong wind conditions.</abstract>
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