[Ultraviolet radiation producing erythema in Valdivia. A comparison among satellite data, a radiative transfer model and ground-based observations].
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% on average in Summer, with an absolute uncertainty of 980 J/m2 at the 95% 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.
Lovengreen
Charlotte
C
Instituto de Fisica, Universidad Austral-de Chile Valdivia, Centro de Ciencias Básicas, Universidad Austral de Chile Puerto Montt y Departamento de Geofisica, Universidad de Chile, Santiago, Chile. clovengr@uach.cl
Alvarez
José Luis
JL
Fuenzalida
Humberto
H
Aritio
Miguel
M
D004781:Environmental Exposure / Q000009:adverse effects / Q000032:analysis; D004890:Erythema / Q000209:etiology*; D006801:Humans; D010083:Oxidants, Photochemical / Q000032:analysis; D010126:Ozone / Q000032:analysis; D011829:Radiation Dosage; D013056:Spectrophotometry, Ultraviolet; D014466:Ultraviolet Rays / Q000009:adverse effects*
D010083:Oxidants, Photochemical; D010126:Ozone