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| Titel |
Comparison of one- and two-filter detectors for atmospheric ²²²Rn measurements under various meteorological conditions |
| VerfasserIn |
Y. Xia, H. Sartorius, C. Schlosser, U. Stöhlker, F. Conen, W. Zahorowski |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1867-1381
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Measurement Techniques ; 3, no. 3 ; Nr. 3, no. 3 (2010-06-28), S.723-731 |
| Datensatznummer |
250001117
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| Publikation (Nr.) |
 copernicus.org/amt-3-723-2010.pdf |
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| Zusammenfassung |
| Parallel monitoring of 222Rn and its short-lived progeny (218Po
and 214Pb) were carried out from November 2007 to April 2008 close to
the top of the Schauinsland mountain, partly covered with forest, in
South-West Germany. Samples were aspired from the same location at 2.5 m
above ground level. We measured 222Rn with a dual flow loop, two-filter
detector and its short-lived progeny with a one-filter detector. A reference
sector for events, facing a steep valley and dominated by pasture, was used
to minimize differences between 222Rn and progeny-derived 222Rn
activity concentrations. In the two major wind sectors covered by forest to
a distance between 60 m and 80 m towards the station progeny-derived
222Rn activity concentration was on average equal to 87% (without
precipitation) and 74% (with precipitation) of 222Rn activity
concentration. The observations show that most of the time both detector
types follow the same pattern. Still, there is no single disequilibrium
factor that could be used to exactly transform short-lived progeny to
222Rn activity concentration under all meteorological conditions. |
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