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| Titel |
An improved inlet for precisely measuring the atmospheric Ar/N2 ratio |
| VerfasserIn |
T. W. Blaine, R. F. Keeling, W. J. Paplawsky |
| 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. 5 ; Nr. 6, no. 5 (2006-04-18), S.1181-1184 |
| Datensatznummer |
250003722
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| Publikation (Nr.) |
 copernicus.org/acp-6-1181-2006.pdf |
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| Zusammenfassung |
| The atmospheric Ar/N2 ratio is expected to be useful as a tracer of
air-sea heat exchange, but this application has been hindered in part due to
sampling artifacts. Here we show that the variability in δ(Ar/N2)
due to thermal fractionation at the inlet can be on the order
of 40-80 per meg, and we introduce the use of an aspirated solar shield that
successfully minimizes such fractionation. The data collected using this new
inlet have a mean diurnal cycle of 1.0 per meg or less, suggesting that any
residual thermal fractionation effect is reduced to this level. |
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