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

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

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The atmospheric Ar/N2 ratio is expected to be useful Gun Cases 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 ZERO PWD AUTO DISHWASHING 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.