An improved inlet for precisely measuring the atmospheric Ar/N<sub>2</sub> ratio
The atmospheric Ar/N<sub>2</sub> 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/N<sub>2</sub>) due to thermal fractionation at t...
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| Format: | Article |
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Copernicus Publications
2006-01-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | http://www.atmos-chem-phys.net/6/1181/2006/acp-6-1181-2006.pdf |
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doaj-147a25fd4a614458937a718bce1678e52020-11-24T21:06:16ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242006-01-016511811184An improved inlet for precisely measuring the atmospheric Ar/N<sub>2</sub> ratioT. W. BlaineR. F. KeelingW. J. PaplawskyThe atmospheric Ar/N<sub>2</sub> 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/N<sub>2</sub>) 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.http://www.atmos-chem-phys.net/6/1181/2006/acp-6-1181-2006.pdf |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
T. W. Blaine R. F. Keeling W. J. Paplawsky |
| spellingShingle |
T. W. Blaine R. F. Keeling W. J. Paplawsky An improved inlet for precisely measuring the atmospheric Ar/N<sub>2</sub> ratio Atmospheric Chemistry and Physics |
| author_facet |
T. W. Blaine R. F. Keeling W. J. Paplawsky |
| author_sort |
T. W. Blaine |
| title |
An improved inlet for precisely measuring the atmospheric Ar/N<sub>2</sub> ratio |
| title_short |
An improved inlet for precisely measuring the atmospheric Ar/N<sub>2</sub> ratio |
| title_full |
An improved inlet for precisely measuring the atmospheric Ar/N<sub>2</sub> ratio |
| title_fullStr |
An improved inlet for precisely measuring the atmospheric Ar/N<sub>2</sub> ratio |
| title_full_unstemmed |
An improved inlet for precisely measuring the atmospheric Ar/N<sub>2</sub> ratio |
| title_sort |
improved inlet for precisely measuring the atmospheric ar/n<sub>2</sub> ratio |
| publisher |
Copernicus Publications |
| series |
Atmospheric Chemistry and Physics |
| issn |
1680-7316 1680-7324 |
| publishDate |
2006-01-01 |
| description |
The atmospheric Ar/N<sub>2</sub> 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/N<sub>2</sub>) 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. |
| url |
http://www.atmos-chem-phys.net/6/1181/2006/acp-6-1181-2006.pdf |
| work_keys_str_mv |
AT twblaine animprovedinletforpreciselymeasuringtheatmosphericarnsub2subratio AT rfkeeling animprovedinletforpreciselymeasuringtheatmosphericarnsub2subratio AT wjpaplawsky animprovedinletforpreciselymeasuringtheatmosphericarnsub2subratio AT twblaine improvedinletforpreciselymeasuringtheatmosphericarnsub2subratio AT rfkeeling improvedinletforpreciselymeasuringtheatmosphericarnsub2subratio AT wjpaplawsky improvedinletforpreciselymeasuringtheatmosphericarnsub2subratio |
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