5. Studies of temporal variations of climate-influencing gases

Continuous measurements of atmospheric gaseous composition by various devices performed in SPbSU give a possibility to study daily, seasonal, annual and long-time (trends) variations of ozone, water vapor, methane, nitrogen oxides, etc.

As some examples, average daily variations of near-surface methane concentration at Peterhof and Voeikovo in September 2013 and ozone seasonal variations in various atmospheric layers are given in Fig. 5.1 and in Fig. 5.2, respectively. Fig. 5.3 demonstrates the comparison of the mean daily values of HF total columns for three observation stations for 2009–2013.

Long-time measurements of the temporal variability of atmospheric gaseous composition at Peterhof allow also to estimating trends of contents of atmospheric gaseous components. Estimates of the methane total columns at Peterhof in 2009-2013 and 2009-2014 are represented in Fig. 5.4.

Principal papers

1. Virolainen Ya.A., Yu.M. Timofeev, A.V. Poberovskii, O. Kirner, M. Hoepfer, 2015: Chlorine Nitrate in the Atmosphere over St. Petersburg. Izvestiya, Atmospheric and Oceanic Physics, 51, 1, 49–56.
2. Virolainen Ya.A., Yu.M. Timofeev, A.V. Polyakov, D.V. Ionov, O. Kirner, A.V. Poberovskii, Kh. Imkhasin, 2016: Comparing Data Obtained from GroundBased Measurements of the Total Contents of O3, HNO3, HCl, and NO2 and from Their Numerical Simulation. Izvestiya, Atmospheric and Oceanic Physics, 52, 1, 57–65.
3. Makarova M.V., O. Kirner, Yu.M. Timofeev, A.V. Poberovskii, Kh.Fh. Imkhasin, S.I. Osipov, B.K. Makarov, 2015: Analysis of methane total column variations in the atmosphere near St. Petersburg using ground-based measurements and simulations. Izvestiya, Atmospheric and Oceanic Physics, 51, 2, 177–185.
4. Makarova M.V., O. Kirner, Yu.M. Timofeev, A.V. Poberovskii, Kh.Kh. Imkhasin, S.I. Osipov, B.K. Makarov, 2015: Annual cycle and long-term trend of the methane total column in the atmosphere over the St. Petersburg region. Izvestiya, Atmospheric and Oceanic Physics, 51, 4, 431–438.
5. Arabagjan D.K., N.N. Paramonova, M.V. Makarova, A.V. Poberovskii, 2015: The analysis of temporal variability of the methane concentration in the atmosphere from data of ground-based measurements. Vestnik SPbSU, ser. 4, 2 (60), issue 3, 204–215 (in Russian).
6. Polyakov A.V., Yu.M. Timofeev, Ya.A. Virolainen, A.V. Poberovskii, 2014: Ground-based measurements of HF total column abundances in the stratosphere near St. Petersburg (2009–2013). Izvestiya, Atmospheric and Oceanic Physics, 50, 6, 675–682.
7. Polyakov A.V., Yu.M. Timofeev, A.V. Poberovskii, 2013: Ground-based measurements of total column of hydrogen chloride in the atmosphere near St. Petersburg. Izvestiya, Atmospheric and Oceanic Physics, 49, 4, 411–419.