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| Titel |
One year of ²²²Rn concentration in the atmospheric surface layer |
| VerfasserIn |
S. Galmarini |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1680-7316
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| Digitales Dokument |
URL |
| Erschienen |
In: Atmospheric Chemistry and Physics ; 6, no. 10 ; Nr. 6, no. 10 (2006-07-12), S.2865-2886 |
| Datensatznummer |
250004004
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| Publikation (Nr.) |
 copernicus.org/acp-6-2865-2006.pdf |
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| Zusammenfassung |
| A one-year time series of 222Rn measured in a rural area in the North
of Italy in 1997 is analyzed. The scope of the investigation is to better
understand the behavior of this common atmospheric tracer in relation to the
meteorological conditions at the release site. Wavelet analysis is used as
one of the investigation tools of the time series. The measurements and
scalograms of 222Rn are compared to those of wind-speed, pressure,
relative humidity, temperature and NOx. The use of wavelet analysis
allows the identification of the various scales controlling the influence of
the meteorological variables on 222Rn dispersion in the surface layer
that are not visible through classical Fourier analysis or direct time
series inspection. The analysis of the time series has identified specific
periods during which the usual diurnal variation of radon is superimposed to
a linear growth thus indicating the build up of concentration at the
measurement level. From these specific cases an estimate of the surface flux
of 222Rn is made. By means of a simple model these special cases are
reproduced. |
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