Quantifying the effects of a low-ozone event and shallow stratocumulus clouds on ultraviolet erythemal radiation exposure

Meteorological and dosimetric ultraviolet (UV) erythemal radiation (UVER) measurements were performed in Didcot, England, on 6 and 7 April 2017. Both days were characterized by clear-sky conditions in the morning and the afternoon with development of shallow stratocumulus clouds (SSC) around noon. I...

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Vydané v:International journal of biometeorology Ročník 63; číslo 3; s. 359 - 369
Hlavní autori: Kelbch, A., Wittlich, M., Bott, A.
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Berlin/Heidelberg Springer Berlin Heidelberg 01.03.2019
Springer Nature B.V
Predmet:
Amplification
Animal Physiology
bioclimatology
Biological and Medical Physics
Biophysics
Clouds
Dosage
Dosimetry
Earth and Environmental Science
England
Environment
Environmental Health
Erythema
Global radiation
Innovations
Meteorology
Original Paper
Ozone
Plant Physiology
Radiation
Radiation effects
Radiation measurement
Sky
Stratocumulus clouds
stratosphere
Ultraviolet radiation
Weight
England
Shallow stratocumulus clouds
Low-ozone event
GENESIS-UV
UV erythemal radiation
ISSN:0020-7128, 1432-1254, 1432-1254
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Popis
Shrnutí:Meteorological and dosimetric ultraviolet (UV) erythemal radiation (UVER) measurements were performed in Didcot, England, on 6 and 7 April 2017. Both days were characterized by clear-sky conditions in the morning and the afternoon with development of shallow stratocumulus clouds (SSC) around noon. In addition, a low-ozone event occurred on 7 April characterized by a 34 DU (Dobson Unit) drop in total stratospheric ozone content. Compared to 6 April, the ozone mini-hole caused UVER increases of 2.67 standard erythema dose (SED) for diffuse and 4.32 SED for global radiation characterized by radiation amplification factors ( RAF ) of 1.62 and 1.52, respectively. The total global UVER dose reductions due to SSC coverage amount to 2.33 SED (6 April) and 2.81 SED (7 April). As innovation the RAF is decomposed into two parts, named cloud ozone factor ( C O F ) and radiation amplification factor based on measured data ( R A F m ), to quantify the low-ozone event’s effect and the SSC influence in independently modifying the UVER doses. Hereby, the weight of each of these two effects acting during the same low-ozone event is expressed by the new COF . In this case, the C O F values range between −0.13 and −0.11 for diffuse UVER and −0.03 to −0.07 for the global UV and UV-B parts. A positive C O F value (0.18) results for the global UV-A range.
Bibliografia:ObjectType-Article-1
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ISSN:0020-7128
1432-1254
1432-1254
DOI:10.1007/s00484-018-01669-8