Measurements and models of the atmospheric Ar/N sub(2) ratio

The Ar/N sub(2) ratio of air measured at 6 globally distributed sites shows annual cycles with amplitudes of 12 to 37 parts in 10 super(6). Summertime maxima reflect the atmospheric Ar enrichment driven by seasonal warming and degassing of the oceans. Paired models of air-sea heat fluxes and atmosph...

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Bibliographic Details
Published in:Geophysical research letters 2003-08, Vol.30 (15)
Main Authors: Battle, M, Bender, M, Hendricks, M B, Ho, D T, Mika, R, McKinley, G, Fan, S-M, Blaine, T, Keeling, R F
Format: Article
Language:English
Online Access:Get full text
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Summary:The Ar/N sub(2) ratio of air measured at 6 globally distributed sites shows annual cycles with amplitudes of 12 to 37 parts in 10 super(6). Summertime maxima reflect the atmospheric Ar enrichment driven by seasonal warming and degassing of the oceans. Paired models of air-sea heat fluxes and atmospheric tracer transport predict seasonal cycles in the Ar/N sub(2) ratio that agree with observations, within uncertainties.
ISSN:0094-8276
DOI:10.1029/2003GL017411