Total column amounts (TCAs) of various climate important atmospheric gases were determined in Peterhof forthe period between 2009 and 2018. These measurements were performed using ground-based IR Fourier transform spectrometer Bruker 125HR, which registered the spectra of direct solar radiances. For the first time inRussia, we estimated the trends for TCAs of 13 climate important gases. For 9 of them, these estimates are reli-able. Trends of the main greenhouse gases CO2, CH4, and N2O, determined with high accuracy (~0.02%), arepositive and equal to 0.52, 0.42, and 0.28% per year, respectively. The comparison of methane trend estimateswith earlier ones demonstrates that in recent years the trend of methane TCAs near St. Petersburg has been in-creased. Moreover, we observe the negative trends in TCAs of tropospheric ozone (–0.75 ± 0.56%/yr),CFC-11 and CFC-12 (~–0.5–1.0%/yr), and ClONO2 (–2%/yr). Trends for HF and HCFC-22 TCAs nearSt. Petersburg are positive, giving ~1–2%/yr.
|Translated title of the contribution||The Estimates of Climate Important Atmospheric Gases Trends near St. Petersburg|
|Journal||ИЗВЕСТИЯ РОССИЙСКОЙ АКАДЕМИИ НАУК. ФИЗИКА АТМОСФЕРЫ И ОКЕАНА|
|Publication status||Published - Jan 2020|