@Article{MacedoFisc:2018:VaTeRa,
               author = "Macedo, Alice dos Santos and Fisch, Gilberto",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         de Aeron{\'a}utica e Espa{\c{c}}o (IAE)}",
                title = "Variabilidade temporal da radia{\c{c}}{\~a}o solar durante o 
                         experimento GOAmazon 2014/15",
              journal = "Revista Brasileira de Meteorologia",
                 year = "2018",
               volume = "33",
               number = "1",
                pages = "353--365",
             keywords = "global, difusa, direta, cobertura de nuvens, medida direta, 
                         global, diffuse, direct, cloud cover, direct measurement.",
             abstract = "O presente trabalho estudou a variabilidade temporal das 3 
                         componentes da irradi{\^a}ncia solar (global, direta e difusa) na 
                         regi{\~a}o de Manacapuru, distante 66 km de Manaus-AM, dentro do 
                         {\^a}mbito do projeto GOAmazon 2014/15, analisando dados 
                         relativos aos anos de 2014 e 2015. Tamb{\'e}m foram analisados 
                         dados de cobertura de nuvens e precipita{\c{c}}{\~a}o do mesmo 
                         per{\'{\i}}odo. Observou-se, de modo geral, que os valores das 
                         fra{\c{c}}{\~o}es de nuvens foram semelhantes entre os dois anos 
                         analisados, situando-se entre valores t{\'{\i}}picos de 20-25% 
                         (esta{\c{c}}{\~a}o seca) e 35-40% (esta{\c{c}}{\~a}o chuvosa). 
                         S{\~a}o apresentados valores t{\'{\i}}picos das 
                         irradi{\^a}ncias solar global, direta e difusa para diferentes 
                         escalas de tempo (hor{\'a}rias e sazonal), bem como as 
                         varia{\c{c}}{\~o}es destes valores entre os anos 2014-2015 
                         (escala interanual). S{\~a}o tamb{\'e}m apresentados as 
                         interrela{\c{c}}{\~o}es destas 3 componentes para os valores 
                         m{\'e}dios hor{\'a}rios e mensais e observa-se que as 
                         irradi{\^a}ncias solar global e direta s{\~a}o diretamente 
                         relacionadas entre si e inversamente relacionadas com a 
                         contribui{\c{c}}{\~a}o difusa. Finalizando, {\'e} discutido 
                         como o evento EN 2015 impactou as medidas das 3 componentes da 
                         irradi{\^a}ncia solar a superf{\'{\i}}cie, associando com a 
                         menor ocorr{\^e}ncia de nuvens/chuva e da presen{\c{c}}a maior 
                         de aeross{\'o}is. ABSTRACT: The present work studied the temporal 
                         variability of the three components of solar irradiation (global, 
                         direct and diffuse) at the Manacapuru region, 66 km distant from 
                         Manaus-AM, within the scope of the GOAmazon 2014/15 project, 
                         analyzing data for the years of 2014 and 2015. Also it was 
                         analyzed the cloud cover data and precipitation. In general, the 
                         cloud cover for both years were similar and their typical values 
                         are 20-25% (dry season) and 35-40% (wet period). The typical 
                         values of global, direct and diffuse solar irradiance were 
                         presented for different time scale (hourly and seasonal) as well 
                         as variations for the years 2014 and 2015 (interannual scale). The 
                         interrelationships amongst the 3 components for hourly and monthly 
                         values were presented and it can be noticed that global and direct 
                         solar irradiances were directly related although both were 
                         inversely correlated with the diffuse solar irradiance. Finally, 
                         the ENSO 2015 event was discussed and how it was impacted, the 
                         measurements as it had lower cloud cover and rain the higher 
                         aerosol concentration. Keywords: global, diffuse, direct, cloud 
                         cover, direct measurement.",
                  doi = "10.1590/0102-7786332017",
                  url = "http://dx.doi.org/10.1590/0102-7786332017",
                 issn = "0102-7786",
             language = "pt",
           targetfile = "macedo_variabilidade.pdf",
        urlaccessdate = "23 set. 2024"
}