ERYTHEMAL UV-B IRRADIANCE (ROBERTSON-BERGER SUNBURN METER DATA) UNDER OZONE DEFICIENCIES IN WINTER/SPRING 1993 |
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Authors: | Mario Blumthaler Walter Ambach Roland Silbernagl Johannes Staehelin |
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Institution: | Institute of Medical Physics, University of Innsbruck, 6020 Innsbruck, Austria;Institute for Atmospheric Physics, ETH-Hénggerberg, 8093 Zurich, Switzerland |
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Abstract: | Abstract –Robertson-Berger sunburn meter data recorded from August 1992 to May 1993 (Innsbruck, 577 m above sea level, Austria) were compared with measurements taken in previous years. In February and March 1993 instantaneous values on clear days were found to be higher by up to 37% than those registered in previous years (1986–1988). However, in winter/spring 1993 daily totals for all days, averaged over 7 days, were within the range of standard deviation of the previous years (1981–1988). Therefore the cumulative UV-B exposure of the ecosystem is within the general range of variability even under the record low ozone values in winter/spring 1993, while single peak doses were enhanced significantly. |
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