Radiación ultravioleta productora de eritema en Valdivia: comparación entre inferencias satelitales, modelo de transferencia radiativa y mediciones desde tierra / Erythemal ultraviolet radiation in Valdivia: a comparison among satellite data, a radiative transfer model and ground based observations
Rev. méd. Chile
; 130(1): 17-25, ene. 2002. tab, graf
Article
em Es
| LILACS
| ID: lil-310248
Biblioteca responsável:
CL1.1
ABSTRACT
To evaluate dose rates and daily doses (DDE) at Valdivia in Southern Chile, ultraviolet irradiances recorded every 15 min from 1998 to 2000 with a high resolution spectroradiometer were weighted with an erythemal action spectrum. Exposure times to get one MED (210 J/m2) in Summer are 10, 12, 18 and 24 min for skin types I trough IV respectively. DDE estimations included in NASA Web products overestimate measurements by 16 percent on average in Summer, with an absolute uncertainty of 980 J/m2 at the 95 percent level. Observed dose rates for clear days are in fair agreement with the numerical output from a numerical model, suggesting that acute episodes can be predicted if total ozone can be forecasted and the population is instructed on corrections for cloud effects
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Raios Ultravioleta
/
Eritema
Tipo de estudo:
Prognostic_studies
Limite:
Humans
Idioma:
Es
Revista:
Rev. méd. Chile
Assunto da revista:
MEDICINA
Ano de publicação:
2002
Tipo de documento:
Article
/
Project document
País de afiliação:
Chile
País de publicação:
Chile