Abstract
The (variable) transparency of our atmosphere regulates the amount of solar energy reaching the ground. Also known as clearness index or transmissivity, it has been related linearly to relative sunshine hours ever since the seminal work of Angstr5m, whose regression model was Iater modified and generalized, to become a classic too! in the statistical assessment of the global radiation at the surface of the Earth. In this paper we submit a physicometeorological rationale for the polynomial regression between clearness index and relative sunshine duration.
References
Akinoglu, B.G.1 2008: Recent advances in the relations between bright sunshine hours and solar irradiation. In: Badescu, V.(&!.), Modeling Solar Radiation at the Earth Surface, Springer, Berlín, pp. 115-143.
ÁngstrOm, A., 1924: Solar and terrestrial radiation. Q.J. Roy. Meteor. Soc., 50,121-126.
Badescu, V. (Ed.), 2008: Modeling Solar Radiation at the Earth Surface, Springer, Berlin, 517 pp.
Bohren, C. F., 1987: Multiple scattering of light and sorne of its obseroable consequences. American Journal of Physics, Vol. (55) 6, 524--533.
Cheva.llier, L., Pelkowski, J., Rutily, B. 2007: Exact results in modeling planetary atmospheres-l. Gray atmospheres. J. Quant. Spectr. Rad. Transf. (JQSRT), 104357-376.
Guyot, G., 1998: Physics of the Environment and Climate. John Wiley & Sons (Praxis Publishing) Chichester, 632 pp.
Ianetz, A., Kudish, A., 2008: A method for determining the solar global and defining the diffuse and beam irradiation on a clear day. In: Bad.escu (Ed.), Modeling Solar Radiation at the Earth Surface, Springer, Berlin, pp. 93-113. Boland, J., Ridley, B., 2008: Models of diffuse solar fraction. In: Badescu (Ed.), Modeling Solar Radiation at the Earth Surface, Springer, Berlin, pp. 193-219.
IDEAM & UPME, 2005: Atlas de Radiación Solar de Colombia. Ministerio de Minas y Energía, Ministerio de Ambiente, Vivienda y Desarrollo Territorial, República de Colombia, Bogotá, 176 pp.
Kambezidis, B.O., Psiloglou, B.E., 2008: The meteorological mdiation model ( M RM}: advancement.s and applications. In: Badescu (Ed.), Modeling Solar Radiation at the Earth Surface, Springer, Berlin, pp. 357-392. Kokhanovsky, A.A., 2006: Cloud Optics. Springer, Dordrecht, 276 pp.
Kondratyev, K.Ya., 1969: Radiation in the Atmosphere. Academic Press (Elsevier Inc.), New York, p. 312. Pelkowski, J,, 2007: El albedo terrestre. Rev. Acad. Colomb. Cienc., 31 (121), 499-520.
Petty, G.W., 2006: A First Course in Atmospheric Radiation. Second Edition. Sundog Publishing, Madison, 458 pp. Prescott, J.A., 1940: Evaporation from water surface in relation to solar radiation. Trans. Royal Society Australia, 40, 114-116.
Rohinson, N. (Ed.), 1966. Solar Radiation. Elsevier Publishing Company, Amsterdam, 347 pp.
Rutily, B., Chevallier, L., Pelkowski, J., Bergeat, J., 2008: Exact results in modeling planetary atmospheres-II. Semi-gray atmospheres. J. Quant. Spectr. Rad. Transf. (JQSRT), 104, 28--42.
Sahin, A. D., §en, Z., 2008: Solar irrodiation estimation methods from sunshine and cloud cover data. In: Badescu (Ed.), Modeling Solar Radiation at the Earth Surface, Springer, Berlín, pp. 145-173.
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright (c) 2023 Revista de la Academia Colombiana de Ciencias Exactas, Físicas y Naturales