2010
DOI: 10.1590/s0102-261x2010000300003
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Taxa de dose eritematosa sob céu encoberto por alto-estrato: estudo de caso

Abstract: ABSTRACT. The erythemal dose rate (EDR) on the Earth's surface depends mainly on the solar zenith angle, column ozone, clouds, aerosols and surface albedo.Clouds are the main atmospheric agent in the modulation of EDR. Therefore, an investigation into the effect of clouds on the ultraviolet radiation (UVR) incidence is an important matter due to the effects of UVR on the biosphere. In this work, a case study is reported where EDR incidences are presented for an overcast-sky scenario of Altostratus (As) in Belo… Show more

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“…The reflectionabsorption set is called cloud forcing (Paltridge & Platt, 1976;Wiscombe, 1980;Salby, 1995;Echer et al, 2001;Souza Echer et al, 2004, 2005. Clouds constitute a first order effect on the modulation of solar irradiance reaching the Earth surface (Souza Echer et al, 2006;Martins et al, 2008;Silva, 2010).…”
Section: Introductionmentioning
confidence: 99%
“…The reflectionabsorption set is called cloud forcing (Paltridge & Platt, 1976;Wiscombe, 1980;Salby, 1995;Echer et al, 2001;Souza Echer et al, 2004, 2005. Clouds constitute a first order effect on the modulation of solar irradiance reaching the Earth surface (Souza Echer et al, 2006;Martins et al, 2008;Silva, 2010).…”
Section: Introductionmentioning
confidence: 99%