UV variability in Moscow according to long-term UV measurements and reconstruction model N. Y. Chubarova Faculty of Geography, Moscow State University, Moscow, Russia
Abstract. Long-term measurements of erythemally weighted UV irradiance (Qer) have
been analyzed for the 1999–2006 period as well as UV variability according
to a reconstruction model since 1968. The estimates of different atmospheric
parameters effects, including NO2 content, on Qer have been
obtained on seasonal and interannual scales. It has been shown that NO2
content in conditions of large megalopolis provides average Qer
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 Qer since 1980
due to changes 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 change in Qer over the longer 1968–2006
period due to significant decrease in effective cloud amount transmission
(−11% per decade) in 1968–1980.
Citation: Chubarova, N. Y.: UV variability in Moscow according to long-term UV measurements and reconstruction model, Atmos. Chem. Phys., 8, 3025-3031, doi:10.5194/acp-8-3025-2008, 2008.