Monitoring of biologically effective UV irradiance at El Arenosillo (INTA), Andalucia, in Spain.
Biological UV (ultraviolet) dosimetry was applied using the biofilm-technique (DLR patent) to determine the UV levels weighted of biologically weighted UV radiation at the INTA Sounding Station of El Arenosillo at Huelva, Spain (37 degrees 06'N, 6 degrees 44'W, 50 m a s 1=above sea level) on 2 days in 1997 [correction of 1977] (April 1, and May 5). Exposure periods were calculated for clear sky days using a radiative transfer model for erythemal doses to reach 1.3 to 1.5 MED (minimal erythemal dose). Reliability of the radiative transfer model was demonstrated by the doses registered by a Yankee-UV biometer for the same exposure periods as used for the biosensor. This work presents the methodology employed (biofilm-technique utilized [correction of utiliced], calculation of exposing periods with radiative transfer model, etc) and the results obtained with the Yankee biometer and the biofilm. At noon, the ratio of biofilm measurements (Ieff, W/m2=biological effective irradiance, in W/m2) to the UV Biometer data (in MED/h) was 3-4.
de la Torre
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R
INTA, Div Space Sciences, Spanish Aerospace Research Establishment, Madrid, Spain.
Horneck
G
G
Rettberg
P
P
Luccini
E
E
Vilaplana
J M
JM
Gil
M
M
D001412:Bacillus subtilis / Q000528:radiation effects*; D018441:Biofilms; D004890:Erythema / Q000209:etiology; D006801:Humans; D008954:Models, Biological; D010507:Periodicity; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods*; D011853:Radiobiology / Q000379:methods*; D013030:Spain; D013171:Spores, Bacterial / Q000528:radiation effects; D014466:Ultraviolet Rays