An improved inlet for precisely measuring the atmospheric Ar/N2 ratio

نویسنده

  • T. W. Blaine
چکیده

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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An improved inlet for measuring the atmospheric Ar/N2 ratio

An improved inlet for precisely measuring the atmospheric Ar/N2 ratio T. W. Blaine, R. F. Keeling, and W. J. Paplawsky Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093-0244, USA Received: 19 September 2005 – Accepted: 7 November 2005 – Published: 21 November 2005 Correspondence to: T. W. Blaine ([email protected]) © 2005 Author(s). This work is license...

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تاریخ انتشار 2006