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Balance of longwave radiation employing the rate of solar radiation for Santa Maria, Rio Grande do Sul, Brazil1 Rev. Ciênc. Agron.
Righi,Evandro Zanini; Heldwein,Arno Bernardo; Maldaner,Ivan Carlos; Lucas,Dionéia Daiane Pittol; Stüker,Paulo Ervin.
New coefficients were determined for the weighting term for cloudiness in the Brunt-Penman equation using the rate of solar radiation (RK) in place of the rate of sunshine duration (n/N). The coefficients in the Brutsaert method proposed for daytime in southern Brazil were also tested and adjusted, and the method was selected which gave the more accurate daily results in relation to the original Brunt-Penman equation, for Santa Maria in the state of Rio Grande do Sul, Brazil (RS). Meteorological data covering 2,472 days obtained from the automatic and conventional weather stations in Santa Maria were used. The coefficients were adjusted by linear and nonlinear regression methods depending on the model, using 2/3 of the data. The adjusted equations were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Solar radiation; Atmospheric transmissivity; Brunt-Penman equation; Emissivity of the atmosphere.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000100029
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