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| Titel |
Seasonal variability of the radon-222 flux density from the Southern Ocean derived from atmospheric radon-222 measurements at the Cape Grim baseline station in Tasmania |
| VerfasserIn |
Wlodek Zahorowski, Scott Chambers, Alan Griffiths, Jagoda Crawford, Alastair Williams |
| Konferenz |
EGU General Assembly 2010
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250034836
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| Zusammenfassung |
| We present and discuss an estimate of the radon-222 (radon) flux density from
the Southern Ocean and its seasonal variability. The flux estimate was based on
selected hourly atmospheric radon concentration measurements in the Baseline wind
sector of the Cape Grim station in Tasmania (40o41’S, 144o41’22”E) from 2001 to
2008.
The aim of the selection process was to define a subset of hourly radon observations
corresponding to oceanic air parcels that were least perturbed by land emissions and
exhibiting minimal exchange with the free troposphere, so that an equilibrium could be
assumed between the measured radon concentrations and their oceanic source. The initial
dataset included all events in the Cape Grim Baseline sector, defined solely by local wind
direction (190º< θ |
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