%0 Journal Article
%@nexthigherunit 8JMKD3MGPCW/3EUPEJL
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%3 284503.pdf
%@mirrorrepository sid.inpe.br/mtc-m19@80/2009/08.21.17.02.53
%D 2010
%4 sid.inpe.br/mtc-m19@80/2010/05.07.17.42
%T Tropical Atlantic Hurricanes, Easterly Waves, and West African Mesoscale Convective Systems
%@usergroup administrator
%@usergroup banon
%@usergroup deicy
%@usergroup marciana
%V 2010
%@affiliation
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JHMS
%@versiontype publisher
%X The relationship between tropical Atlantic hurricanes (Hs), atmospheric easterly waves (AEWs), and West African mesoscale convective systems (MCSs) is investigated. It points out atmospheric conditions over West Africa before hurricane formation. The analysis was performed for two periods, JuneNovember in 2004 and 2005, during which 12 hurricanes (seven in 2004, five in 2005) were selected. Using the AEW signature in the 700 hPa vorticity, a backward trajectory was performed to the African coast, starting from the date and position of each hurricane, when and where it was catalogued as a tropical depression. At this step, using the Meteosat-7 satellite dataset, we selected all the MCSs around this time and region, and tracked them from their initiation until their dissipation. This procedure allowed us to relate each of the selected Hs with AEWs and a succession of MCSs that occurred a few times over West Africa before initiation of the hurricane. Finally, a dipole in sea surface temperature (SST) was observed with a positive SST anomaly within the region of H generation and a negative SST anomaly within the Gulf of Guinea. This SST anomaly dipole could contribute to enhance the continental convergence associated with the monsoon that impacts on the West African MCSs formation.
%8 fev
%@area MET
%@secondarykey INPE--PRE/
%@documentstage not transferred
%@e-mailaddress deicy.farabello@cpec.inpe.br
%K hurricanes, tropical Atlantic.
%@archivingpolicy denypublisher allowfinaldraft
%@doi 10.1155/2010/284503
%@issn 1687-9309
%@group
%@group CPT-CPT-INPE-MCT-BR
%N 284503
%@dissemination WEBSCI; PORTALCAPES.
%A Kouadio, Yves K.,
%A Machado,  Luiz Augusto Toledo,
%A Servain, Jacques,
%B Advances in Meteorology
%2 sid.inpe.br/mtc-m19@80/2010/05.07.17.42.53
%@secondarytype PRE PI