Estimation of nocturnal222Rn soil fluxes over Russia from TROICA measurements
Item
Title (Dublin Core)
Estimation of nocturnal222Rn soil fluxes over Russia from TROICA measurements
Description (Dublin Core)
In TROICA (TRanscontinental Observations Into the Chemistry of the Atmosphere) campaigns (1999–2008), the simultaneous observations of near surface <sup>222</sup>Rn 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 <sup>222</sup>Rn and temperature vertical distribution are used to estimate <sup>222</sup>Rn regional scale soil fluxes based on calculations of nocturnal <sup>222</sup>Rn accumulation rates in the surface layer under inversion conditions. An effect of seasonal soil thawing on 2–4 times surface <sup>222</sup>Rn concentration increase from summer 1999 to autumn 2005 is observed. The estimated <sup>222</sup>Rn regional averaged fluxes vary over Russia from 29 ± 8 mBq m<sup>−2</sup> s<sup>−1</sup> in its so-called European territory to 95 ± 51 mBq m<sup>−2</sup> s<sup>−1</sup> in the southern area of Siberia. The highest <sup>222</sup>Rn 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 <sup>222</sup>Rn flux variations in specific events show a strong effect of both soil and atmospheric conditions on <sup>222</sup>Rn near-surface abundance and the derived seasonal patterns over the continent.
Creator (Dublin Core)
Berezina, E. V.
Elansky, N. F.
Moiseenko, K. B.
Belikov, I. B.
Shumsky, R. A.
Safronov, A. N.
Brenninkmeijer, C. A. M
Date (Dublin Core)
2018-01-15
Type (Dublin Core)
Text
Format (Dublin Core)
application/pdf
Identifier (Dublin Core)
10.5194/acp-13-11695-2013
https://acp.copernicus.org/articles/13/11695/2013/
Source (Dublin Core)
eISSN: 1680-7324
Language (Dublin Core)
eng
