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          Institute: MPI für Chemie     Collection: Publikationen MPI für Chemie     Display Documents



ID: 675646.0, MPI für Chemie / Publikationen MPI für Chemie
Estimation of nocturnal 222Rn soil fluxes over Russia from TROICA measurements
Authors:Berezina, E. V.; Elansky, N. F.; Moiseenko, K. B.; Belikov, I. B.; Shumsky, R. A.; Safronov, A. N.; Brenninkmeijer, C. A. M.
Language:English
Date of Publication (YYYY-MM-DD):2013
Title of Journal:Atmospheric Chemistry and Physics
Volume:13
Issue / Number:23
Start Page:11695
End Page:11708
Review Status:Internal review
Audience:Experts Only
Abstract / Description:In TROICA (TRanscontinental Observations Into the Chemistry of the Atmosphere) campaigns (1999-2008), the simultaneous observations of near surface Rn-222 concentrations and atmospheric boundary layer thermal structure were performed along the Trans-Siberian Railway across northern Eurasia from Moscow to Vladivostok, including central, southern and far eastern parts of Russia. The data on Rn-222 and temperature vertical distribution are used to estimate Rn-222 regional scale soil fluxes based on calculations of nocturnal Rn-222 accumulation rates in the surface layer under inversion conditions. An effect of seasonal soil thawing on 2-4 times surface Rn-222 concentration increase from summer 1999 to autumn 2005 is observed. The estimated Rn-222 regional averaged fluxes vary over Russia from 29 +/- 8 mBq m(-2) s(-1) in its so-called European territory to 95 +/- 51 mBq m(-2) s(-1) in the southern area of Siberia. The highest Rn-222 fluxes are derived in the regions of high tectonic activity and orogenic belts of central and eastern Siberia and in far eastern Russia. The observed high Rn-222 flux variations in specific events show a strong effect of both soil and atmospheric conditions on Rn-222 near-surface abundance and the derived seasonal patterns over the continent.
External Publication Status:published
Document Type:Article
Version Comment:Automatic journal name synchronization
Communicated by:N. N.
Affiliations:MPI für Chemie
Identifiers:ISI:000328616800006 [ID No:1]
ISSN:1680-7316 [ID No:2]
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