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Performance of the REST2 model for 1-minute clear-sky solar irradiance with MERRA-2 atmospheric inputs.
(2022)
The broadband irradiances (GHI,DHI,DNI) and the photo synthetically active radiation (PAR) estimated by the REST2 clear skymodel are evaluated against1-minute high quality ground measurements for one site representative ...
Análise da frequência anual das condições de céu em Botucatu, São Paulo
(Departamento de Engenharia Agrícola - UFCG, 2012-09)
This paper presents an analysis of the frequency of the sky conditions in Botucatu. The classification of sky conditions was made based on the clearness index (K T), calculated from a database with 10 years of measured ...
A New Method to Estimate Cloud Cover Fraction over El Leoncito Observatory from an All- Sky Imager Designed for Upper Atmosphere Studies
(IOP Publishing, 2013-01)
A method for determining cloud cover fraction over El Leoncito Observatory (31.8°S, 69.3°W) is presented. Data from an all-sky imaging system, designed to measure nightglow originating from the mesosphere and thermosphere, ...
Análise da frequência anual das condições de céu em Botucatu, São Paulo
(Universidade Federal da Paraíba (UFPB) Ccsa, 2014)
Modeling hourly and daily fractions of UV, PAR and NIR to global solar radiation under various sky conditions at Botucatu, Brazil
(Elsevier B.V., 2009-03-01)
In this analysis, using available hourly and daily radiometric data performed at Botucatu, Brazil, several empirical models relating ultraviolet (UV), photosynthetically active (PAR) and near infrared (NIR) solar global ...
Modeling hourly and daily fractions of UV, PAR and NIR to global solar radiation under various sky conditions at Botucatu, Brazil
(Elsevier B.V., 2009-03-01)
In this analysis, using available hourly and daily radiometric data performed at Botucatu, Brazil, several empirical models relating ultraviolet (UV), photosynthetically active (PAR) and near infrared (NIR) solar global ...
Overcast sky condition prevails on and influences the biometeorology of the tropical Andean Páramos
(2023)
Clouds play a major role in modulating the biometeorological processes. We studied the influence
of cloudiness on four biometeorological variables: daily air temperature (Tair), relative humidity (RH),
reference ...
Distribuição de frequência das condições de céu em função das variações climáticas em Botucatu-SP
(Universidade Estadual Paulista (Unesp), 2010-06-18)
O estudo das condições médias de céu de um determinado local permite conhecer a dinâmica da variação dos níveis de energia solar, além de servir como parâmetro na estimativa de radiações a partir de modelos estatísticos, ...