Atmos. Chem. Phys. Discuss., 13, 14545-14579, 2013
www.atmos-chem-phys-discuss.net/13/14545/2013/
doi:10.5194/acpd-13-14545-2013
© Author(s) 2013. This work is distributed
under the Creative Commons Attribution 3.0 License.
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Estimation of nocturnal 222Rn soil fluxes over Russia from TROICA measurements
E. V. Berezina1, N. F. Elansky1, K. B. Moiseenko1, I. B. Belikov1, R. A. Shumsky1, A. N. Safronov1, and C. A. M. Brenninkmeijer2
1A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, Moscow, Russia
2Max-Planck-Institut für Chemie, Air Chemistry Division, Mainz, Germany

Abstract. In TROICA (TRanscontinental Observations Into the Chemistry of the Atmosphere) experiments (1999–2008) simultaneous observations of near surface 222Rn concentrations and atmospheric boundary layer thermal structure were performed across North Eurasia including the central part of Russia, South Siberia and the Far East. The data on 222Rn and temperature vertical distribution are used to estimate regional scale 222Rn soil fluxes basing on calculations of nocturnal 222Rn accumulation rates in the surface layer under inversion conditions. An effect of seasonal soil thawing on 2–4 times surface 222Rn concentration increase from summer 1999 to autumn 2005 is observed. The 222Rn flux estimated from our experiments varies over Russia from 0.01 to 0.15 Bq m−2 s−1 with the highest 222Rn fluxes being derived in the mountain regions of South Siberia and the Far East.

Citation: Berezina, E. V., Elansky, N. F., Moiseenko, K. B., Belikov, I. B., Shumsky, R. A., Safronov, A. N., and Brenninkmeijer, C. A. M.: Estimation of nocturnal 222Rn soil fluxes over Russia from TROICA measurements, Atmos. Chem. Phys. Discuss., 13, 14545-14579, doi:10.5194/acpd-13-14545-2013, 2013.
 
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