Episode of unusual high solar ultraviolet radiation in central Europe due to dynamical reduced stratospheric ozone in May 2005.

Stick, C., Krüger, Kirstin, Schade, Nils H., Sandmann, H. and Macke, Andreas (2006) Episode of unusual high solar ultraviolet radiation in central Europe due to dynamical reduced stratospheric ozone in May 2005. Open Access Atmospheric Chemistry and Physics, 6 . pp. 1771-1776. DOI 10.5194/acp-6-1771-2006.

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Abstract

In late May 2005 unusual high levels of solar ultraviolet radiation were observed over central Europe. In Northern Germany the measured irradiance of erythemally effective radiation exceeded the climatological mean by more than about 20%. An extreme low ozone event for the season coincided with high solar elevation angles and high pressure induced clear sky conditions leading to the highest value of erythemal UV-radiation ever observed over this location in May since 1994. This hereafter called "ozone mini-hole" was caused by an elevation of tropopause height accompanied with a poleward advection of ozone-poor air from the tropics. The resultant increase in UV-radiation is of particular significance for human health. Dynamically induced low ozone episodes that happen in late spring can considerably enhance the solar UV-radiation in mid latitudes and therefore contribute to the UV-burden of people living in these regions.

Document Type: Article
Keywords: UV, stratospheric ozone, ozone mini holes, transport
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-ME Maritime Meteorology
Refereed: Yes
Open Access Journal?: Yes
DOI etc.: 10.5194/acp-6-1771-2006
ISSN: 1680-7316
Date Deposited: 03 Dec 2008 16:52
Last Modified: 06 Sep 2016 09:39
URI: http://oceanrep.geomar.de/id/eprint/3544

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