 |
| Titel |
Estimation of nocturnal ²²²Rn soil fluxes over Russia from TROICA measurements |
| VerfasserIn |
E. V. Berezina, N. F. Elansky, K. B. Moiseenko, I. B. Belikov, R. A. Shumsky, A. N. Safronov, C. A. M. Brenninkmeijer |
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| ISSN |
1680-7316
|
| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 13, no. 23 ; Nr. 13, no. 23 (2013-12-03), S.11695-11708 |
| Datensatznummer |
250085850
|
| Publikation (Nr.) |
 copernicus.org/acp-13-11695-2013.pdf |
|
|
|
|
|
| Zusammenfassung |
| In TROICA (TRanscontinental Observations Into the Chemistry of the
Atmosphere) campaigns (1999–2008), the simultaneous observations of near
surface 222Rn 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 222Rn and temperature
vertical distribution are used to estimate 222Rn regional scale soil
fluxes based 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 estimated 222Rn 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 222Rn 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 222Rn flux variations in specific
events show a strong effect of both soil and atmospheric conditions
on 222Rn near-surface abundance and the derived seasonal
patterns over the continent. |
| |
|
| Teil von |
|
|
|
|
|
|
|
|