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	<metadata ReferenceType="Thesis">
		<site>mtc-m16b.sid.inpe.br 802</site>
		<holdercode>{isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}</holdercode>
		<identifier>6qtX3pFwXQZGivnJSY/HcboD</identifier>
		<repository>sid.inpe.br/MTC-m13@80/2005/08.18.12.54</repository>
		<lastupdate>2023:04.24.18.36.38 cptec.inpe.br/walmeida/2003/04.25.17.12 simone</lastupdate>
		<metadatarepository>sid.inpe.br/MTC-m13@80/2005/08.18.12.54.56</metadatarepository>
		<metadatalastupdate>2023:04.24.18.37.36 cptec.inpe.br/walmeida/2003/04.25.17.12 simone {D 1990}</metadatalastupdate>
		<secondarykey>INPE-5222-TDL/437</secondarykey>
		<citationkey>Chan:1990:AnDiOn</citationkey>
		<title>Análise de distúrbios ondulatórios de leste sobre o Oceano Atlântico Equatorial Sul</title>
		<alternatetitle>Analysis of wave disturbances from east over equatorial South Atlantic Oceanic</alternatetitle>
		<course>MET-SPG-INPE-BR</course>
		<year>1990</year>
		<secondarydate>19921216</secondarydate>
		<date>1990-08-29</date>
		<thesistype>Dissertação (Mestrado em Meteorologia)</thesistype>
		<secondarytype>TDI</secondarytype>
		<numberofpages>134</numberofpages>
		<numberoffiles>2</numberoffiles>
		<size>1288 KiB</size>
		<author>Chan, Chou Sin,</author>
		<group>MET-SPG-INPE-BR</group>
		<committee>Rao, Vadlamudi Brahamananda (presidente),</committee>
		<committee>Ferreira, Nelson de Jesus (orientador),</committee>
		<committee>Prakki, Satyamurty (orientador),</committee>
		<committee>Kayano, Mary Toshie,</committee>
		<committee>Caetano Neto, Ernesto dos Santos,</committee>
		<e-mailaddress>chou.chan@inpe.br, chou.sinchan@gmail.com</e-mailaddress>
		<university>Instituto Nacional de Pesquisas Espaciais (INPE)</university>
		<city>São José dos Campos</city>
		<transferableflag>1</transferableflag>
		<keywords>meteorologia, climatologia, Oceano Atlântico Equatorial Sul, distúrbios equatoriais, meteorology, climatology, Atlantic Ocean, equatorial disturbance.</keywords>
		<abstract>Analisa-se as características ondulatórias básicas dos distúrbios equatoriais de leste sobre o Oceano Atlântico Equatorial Sul, próximo a costa da América do Sul, durante o First GARP (Global Atmospheric Research Program) Global Experiment (FGGE). Foram utilizados dados do National Meteorological Center (NMC) e dados de radiação de onda longa (ROL). Análises de diagramas tipo "Hovmoller" da componente meridional do vento revelam distúrbios ondulatórios se propagando para oeste com velocidade de fase entre 10 a 12m/s, período entre 5 a 6 dias, e comprimento de onde 4800 km a 6200 km. Há sinais de distúrbios durante todo o ano. No outono ocorrem as ondas mais curgas, enquanto no inverno ocorrem as ondss mais longas. As análises mostram distúrbios em ROL com períodos entre 10 a 30 e entre 30 a 60 dias. Os espectros de potência da componente meridional do vento apresentam picos no intervalo de 3 a 5 dias em 5 S. Estes picos se destacam mais nas estações de outono e inverno, em torno de 20 W e 25 W. Os espectros cruzados indicam ondas se propagando para oeste com a velocidade de 9,5 m/s e comprimento de onda de 3300 km durante o trimestre MAM, e velocidade de 15 m/s e comprimento de 5200 km durante o trimestre JJA. ABSTRACT: Using the National Meteorological Center (NMC) daily data and Outgoing Longwave Radiation data (OLR), this study focus on the main features of wave disturbances over the Fguatorial Atlantic Ocean, vicinity of South America, during the First GARI' Global Experiment (FGGE). Hovmoller diagrams and spectrum analysis of the meridional component of wind at 850 hPa are used to estimate the time scale and the propagation features of wave disturbances. Analysis of Hovmoller diagrams reveal, throughout the year, the existence of waves propagating westward with a period of 5-6 days, phase speed of 10-12 m/s, and wavelength  of  about 4800-6200 km. During the southern autumn, the waves are relatively short while during the southern winter the waves are relatively long. Also during these seasons the amplitude of the waves are relatively larger than during thec., ther seasons. These disturbances are only weakly observed in OLR data, while disturbances of 10-30 days and 30-60 days period were more evident. Power spectra of meridional wind component show peaks between  3-5  days over the  Atlantic Ocean at 5 °S. These peaks are more prominent during autumn and winter and at about 20°W and 25°W. Cross spectra indicate waves travelling westwards at speed of 9.5 m/s and wavelength of 3300 km during southern autumn, and at phase speed of 15 m/s and wavelength of about 5200 km during southern winter.</abstract>
		<area>MET</area>
		<language>pt</language>
		<targetfile>publicacao.pdf</targetfile>
		<usergroup>administrator</usergroup>
		<usergroup>fabia</usergroup>
		<usergroup>jefferson</usergroup>
		<usergroup>sergio</usergroup>
		<usergroup>sergio@sid.inpe.br</usergroup>
		<usergroup>simone</usergroup>
		<usergroup>tereza@sid.inpe.br</usergroup>
		<usergroup>viveca@sid.inpe.br</usergroup>
		<visibility>shown</visibility>
		<copyright>urlib.net/www/2012/11.12.15.10</copyright>
		<rightsholder>originalauthor yes</rightsholder>
		<copyholder>SID/SCD</copyholder>
		<readpermission>allow from all</readpermission>
		<documentstage>not transferred</documentstage>
		<nexthigherunit>8JMKD3MGPCW/3F35TRS</nexthigherunit>
		<hostcollection>cptec.inpe.br/walmeida/2003/04.25.17.12</hostcollection>
		<agreement>{termo de deposito sin chan chou.pdf} .htaccess .htaccess2</agreement>
		<lasthostcollection>cptec.inpe.br/walmeida/2003/04.25.17.12</lasthostcollection>
		<supervisor>Prakki, Satyamurty,</supervisor>
		<supervisor>Ferreira, Nelson de Jesus,</supervisor>
		<url>http://mtc-m16b.sid.inpe.br/rep-/sid.inpe.br/MTC-m13@80/2005/08.18.12.54</url>
	</metadata>
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