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13 Mar 2017
Status : this preprint was under review for the journal BG but the revision was not accepted.
Nitrous oxide variability at sub-kilometre resolution in the Atlantic sector of the Southern Ocean
Imke Grefe , Sophie Fielding , Karen J. Heywood , and Jan Kaiser
The Southern Ocean is an important region for global nitrous oxide (N2 O) cycling. The contribution of different source and sink mechanisms is, however, not very well constrained due to a scarcity of seawater data from the area. Here we present high-resolution surface N2 O measurements from the Atlantic sector of the Southern Ocean, taking advantage of a relatively new underway setup allowing for collection of data during transit across mesoscale features such as frontal systems and eddies. Covering a range of different environments and biogeochemical settings, N2 O saturations and sea-to-air flux were highly variable: Saturations ranged from 96.5 % at the sea ice edge in the Weddell Sea to 126.1 % across the Polar Frontal Zone during transit to South Georgia. Negative sea-to-air fluxes of up to −1.3 µmol m−2 d−1 were observed in the Subantarctic Zone and highest positive fluxes of 14.5 µmol m−2 d−1 in Stromness Bay, coastal South Georgia.
Received: 02 Mar 2017 – Discussion started: 13 Mar 2017
Publisher's note : Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Imke Grefe , Sophie Fielding , Karen J. Heywood , and Jan Kaiser
Status: closed
Status: closed
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
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Status: closed
Status: closed
AC : Author comment | RC : Referee comment | SC : Short comment | EC : Editor comment
- Printer-friendly version
- Supplement
Imke Grefe , Sophie Fielding , Karen J. Heywood , and Jan Kaiser
Imke Grefe , Sophie Fielding , Karen J. Heywood , and Jan Kaiser
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