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| Titel |
Late spring ultraviolet levels over the United Kingdom and the link to ozone |
| VerfasserIn |
J. Austin, C. M. H. Driscoll, S. F. G. Farmer, M. J. Molyneux |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 17, no. 9 ; Nr. 17, no. 9, S.1199-1209 |
| Datensatznummer |
250013812
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| Publikation (Nr.) |
 copernicus.org/angeo-17-1199-1999.pdf |
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| Zusammenfassung |
Erythemally-weighted ultraviolet (UVery)
levels measured over southern England, during anticyclonic weather between 30
April and 2 May, 1997, were almost 50 higher than normally expected for clear
skies and were similar to mid-summer values for the first time since
measurements began in 1990. Investigation of this episode suggests that a
combination of both meteorological and chemical effects were responsible for
generating record low ozone amounts for the time of year. Further, comparisons
between the A band ultraviolet (315 to 400 nm wavelength) amounts, and radiative
calculations confirm that the high UVery was primarily due to
the reduction in total ozone. These results are contrasted with a similar period
for 1998, in which near climatological ozone amounts were measured. The
prospects for enhanced UVery levels in future years are
briefly reviewed in the light of expected increases in stratospheric halogen
levels and greenhouse gases.
Key words. Atmospheric composition and structure
(middle atmosphere · composition and chemistry) · Meterology and atmospheric
dynamics (middle atmosphere dynamics; radiative processes) |
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