Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.3/2229
Título: UV Index estimation from global radiation and total ozone observations in Azores.
Autor: Carvalho, Fernanda
Henriques, Diamantino
Fialho, Paulo
Palavras-chave: Ozone
Radiation
UV Index
Azores
Data: Set-2007
Citação: Carvalho, Fernanda; Henriques, Diamantino; Fialho, Paulo (2007). "UV Index estimation from global radiation and total ozone observations in Azores", «MCM9 UV Conference», COST726 activity, Davos, Switzerland, 17-20 September 2007 (Poster).
Resumo: The UV Index (UVI) is a public-oriented meteorological kind of information about the damaging ultraviolet radiation at the ground (Vaniceck et al., 1999). Its use begins to be so popular as temperatures highs, wind chill, fire risk index, air quality index and other meteorological indexes and parameters. A UVI scale was already defined by WHO (WHO, 2002) in order to provide a correspondence between UVI levels and protective measures to avoid damaging effects on humans. However, UVI is usually given in integer units, so the required precision for the public must be less or equal than 0.5 UVI units. While UV dependence on ozone is well understood and easily to model, clouds dependence is more difficult do model and its effect on daily variability is also important. In addition, atmospheric UV measurements are more expensive than global radiation measurements and therefore fewer. However, global radiation is much less dependent on ozone and its variability depends basically on clouds. Therefore, global radiation measurements can be used to correct a simple radioactive transfer model for clear sky conditions with respect to the actual cloudiness. The scope of this work is to find an approach to derive UVI from actual global radiation and ozone measurements with acceptable error for public awareness.
Descrição: MCM9 UV Conference. Davos, Switzerland, 17-20 September 2007.
URI: http://hdl.handle.net/10400.3/2229
Aparece nas colecções:DCA - Comunicações a Conferências / ConferenceItem

Ficheiros deste registo:
Ficheiro Descrição TamanhoFormato 
2007-COST726Davos-UV-Poster.pdf637,48 kBAdobe PDFVer/Abrir
UVConf059 - ABSTRACT.pdf153,65 kBAdobe PDFVer/Abrir


FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpace
Formato BibTex MendeleyEndnote Degois 

Todos os registos no repositório estão protegidos por leis de copyright, com todos os direitos reservados.