Atmospheric Chemistry and Physics Discussions
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2008
10.5194/acpd-8-893-2008
http://www.atmos-chem-phys-discuss.net/8/893/2008/
http://www.atmos-chem-phys-discuss.net/8/893/2008/acpd-8-893-2008.html
http://www.atmos-chem-phys-discuss.net/8/893/2008/acpd-8-893-2008.pdf
893
906
2008-01-18
UV variability in Moscow according to long-term UV measurements and reconstruction model
N. Y. Chubarova
chubarova@imp.kiae.ru
Faculty of Geography, Moscow State University, Moscow, Russia
Long-term measurements of erythemally weighted UV irradiance (<i>Q</i><sub>er</sub>) have
been analyzed for the 1999–2006 period as well as UV variability according
to reconstruction model since 1968. The estimates of different atmospheric
parameters effects, including NO<sub>2</sub> content, on <i>Q</i><sub>er</sub>) have been
obtained on seasonal and interannual scales. It has been shown that NO<sub>2</sub>
content in conditions of large megalopolis provides average <i>Q</i><sub>er</sub>
decrease of about 1.5–2%. The seasonal variations of the observed UV
indices are discussed from the point of view of the impact on health. Using
the reconstruction model we showed a distinct growth in <i>Q</i><sub>er</sub> since 1980
due to decrease in total ozone (+2.5% per decade), effective cloud amount
transmission (+2.1% per decade) and aerosol loading (+1.1% per
decade). However, there is no changes in <i>Q</i><sub>er</sub> over larger 1968–2006
period due to significant decrease in effective cloud amount transmission
(−11% per decade) in 1968–1980.
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