@InProceedings{BarrosOyam:2008:CaPrSi,
               author = "Barros, Sheila Santana de and Oyama, Marcos Daisuke",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE/CPTEC)} and 
                         Divis{\~a}o de Ci{\^e}ncias Atmosf{\'e}ricas, Instituto de 
                         Aeron{\'a}utica e Espa{\c{c}}o, S{\~a}o Jos{\'e} dos Campos, 
                         SP, Bra.",
                title = "Caracteriza{\c{c}}{\~a}o preliminar dos sistemas 
                         meteorol{\'o}gicos associados {\`a} precipita{\c{c}}{\~a}o no 
                         centro de lan{\c{c}}amento de Alc{\^a}ntara",
            booktitle = "Anais...",
                 year = "2008",
         organization = "Congresso Brasileiro de Meteorologia, 15.",
             keywords = "precipita{\c{c}}{\~a}o, sistemas meteorol{\'o}gicos, TIR, 
                         nebulosidade, precipitation, meteorological systems, brightness 
                         temperature, cloudiness.",
             abstract = "Neste trabalho foi feita uma caracteriza{\c{c}}{\~a}o preliminar 
                         dos sistemas meteorol{\'o}gicos associados a eventos de 
                         precipita{\c{c}}{\~a}o em Alc{\^a}ntara-MA, sede do Centro de 
                         Lan{\c{c}}amento de Alc{\^a}ntara (CLA), situada na costa norte 
                         do Brasil. A caracteriza{\c{c}}{\~a}o foi feita para os eventos 
                         de chuva ocorridos no ano de 2005 e 2006. Foram utilizados dados 
                         de temperatura de brilho (TIR) do canal 4 do sat{\'e}lite GOES-12 
                         e dados de rean{\'a}lises do NCEP/NCAR para identificar os 
                         sistemas meteorol{\'o}gicos, dados de radia{\c{c}}{\~a}o de 
                         onda longa emergente (ROLE) do NCAR para auxiliar na 
                         identifica{\c{c}}{\~a}o da Zona de Converg{\^e}ncia 
                         Intertropical e totais hor{\'a}rios de precipita{\c{c}}{\~a}o 
                         no CLA para identificar os eventos de precipita{\c{c}}{\~a}o. A 
                         porcentagem maior do total de precipita{\c{c}}{\~a}o do CLA 
                         esteve associada a sistemas de grande escala. A nebulosidade 
                         estratiforme (convectiva) {\'e} respons{\'a}vel por cerca da 
                         metade (um ter{\c{c}}o) dos eventos de precipita{\c{c}}{\~a}o; 
                         para o restante dos casos, n{\~a}o foi poss{\'{\i}}vel realizar 
                         essa caracteriza{\c{c}}{\~a}o por falta de imagens. Os 
                         resultados ainda mostram que dificilmente os sistemas atuam 
                         individualmente para ocasionar a chuva. Eles se combinam entre si, 
                         organizando-se em v{\'a}rias escalas e gerando 
                         condi{\c{c}}{\~o}es prop{\'{\i}}cias de umidade e 
                         convec{\c{c}}{\~a}o para a forma{\c{c}}{\~a}o da chuva. 
                         ABSTRACT: In this work a preliminary characterization of the 
                         meteorological systems associated to rainfall events in 
                         Alc{\^a}ntara-MA, a location in the northern coast of Brazil and 
                         where the Alc{\^a}ntara Rocket Launching Centre (CLA) is found, 
                         was made. The rainfall events occurred in 2005 at 2006 were 
                         studied. The brightness temperature from GOES-12 satellite and 
                         Reanalysis data from NCEP/NCAR were used to identify the 
                         meteorological systems, outgoing long wave radiation data from 
                         NCAR was used to aid the identification of the Intertropical 
                         Convergence Zone (ITCZ), and hourly rainfall data collected at CLA 
                         was used to identify the rainfall events. The majority of rainfall 
                         events in CLA was related to large-scale systems. The stratiform 
                         (convective) cloudiness is responsible for about half (one third) 
                         of all rainfall events; for the remainder, it was not possible to 
                         do this characterization due to missing images. Moreover, the 
                         results show that systems hardly act individually to produce 
                         rainfall. They join themselves, organizing in several scales to 
                         produce favorable conditions of moisture and convection for 
                         rainfall occurrence.",
  conference-location = "S{\~a}o Paulo",
      conference-year = "24-29 ago",
           copyholder = "SID/SCD",
             language = "pt",
         organisation = "SBMET",
           targetfile = "barros_e_oyama_2008_xv_cbmet_vfinal.pdf",
        urlaccessdate = "15 jun. 2024"
}