Articles | Volume 21, issue 2
Atmos. Chem. Phys., 21, 1357–1373, 2021
https://doi.org/10.5194/acp-21-1357-2021
Atmos. Chem. Phys., 21, 1357–1373, 2021
https://doi.org/10.5194/acp-21-1357-2021

Research article 01 Feb 2021

Research article | 01 Feb 2021

Secular change in atmospheric Ar∕N2 and its implications for ocean heat uptake and Brewer–Dobson circulation

Shigeyuki Ishidoya et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Shigeyuki Ishidoya on behalf of the Authors (05 Oct 2020)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (06 Oct 2020) by Peter Haynes
RR by Anonymous Referee #1 (21 Oct 2020)
RR by Anonymous Referee #2 (02 Nov 2020)
ED: Publish subject to minor revisions (review by editor) (17 Nov 2020) by Peter Haynes
AR by Shigeyuki Ishidoya on behalf of the Authors (04 Dec 2020)  Author's response    Manuscript
ED: Publish subject to technical corrections (13 Dec 2020) by Peter Haynes
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Short summary
The surface Ar / N2 ratio showed not only secular increasing trends, but also interannual variations in phase with the global ocean heat content (OHC). Sensitivity test by using a two-dimensional model indicated that the secular trend in the Ar / N2 ratio is modified by the gravitational separation in the stratosphere. The analytical results imply that the surface Ar/N2 ratio is an important tracer for detecting spatiotemporally integrated changes in OHC and stratospheric circulation.
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