Long-Term Observations of Stratospheric Species at the A. M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences: Analysis of Trends and Interannual Variations in the Total Contents of O3 and NO2.

Autor: Gruzdev, A. N., Arabov, A. Ya., Elokhov, A. S., Savinykh, V. V., Senik, I. A., Borovskii, A. N., Elanskii, N. F.
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Zdroj: Izvestiya, Atmospheric & Oceanic Physics; Jun2022, Vol. 58 Issue 3, p270-283, 14p
Abstrakt: Results of long-term measurements and an analysis of the temporal variability of the total contents (TC) of O3 and NO2 at the Kislovodsk High-Altitude Scientific Station (KHASS) and the Zvenigorod Scientific Station (ZSS) of the A. M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, are presented. At the KHASS, ozone measurements have been conducted since 1989 by direct and zenith-scattered ultraviolet solar radiation. The total content of NO2 was measured at the KHASS by direct solar radiation in the visible wavelength range in the morning and evening from 1981 to 2008. At the ZSS, NO2 measurements have been conducted since 1990 by zenith-scattered visible solar radiation during morning and evening twilights. The long-term variability of measurement data are analyzed using the multivariate linear regression method. Annual and seasonally dependent estimates of the linear trends of O3 and NO2 have been obtained. A common feature of the long-term trends in the TCs of O3 at the KHASS and NO2 at the ZSS and KHASS is the significant trends in the winter–spring season. The NO2 trends at the two stations are negative, and the trend at the KHASS is stronger than at the ZSS. The O3 trend at the KHASS changes its sign from positive to negative around the 2000s. For both species, estimates have been obtained for variations in their total contents associated with external (solar activity) and circulation factors. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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