Nitrous oxide variability at sub-kilometre resolution in the Atlantic sector of the Southern Ocean

Grefe, Imke, Fielding, Sophie, Heywood, Karen J. and Kaiser, Jan (2017) Nitrous oxide variability at sub-kilometre resolution in the Atlantic sector of the Southern Ocean.

Full text not available from this repository. (Request a copy)

Abstract

The Southern Ocean is an important region for global nitrous oxide (N2O) 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 N2O 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, N2O 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.

Item Type: Article
Additional Information: This discussion paper is a preprint. It has been under review for the journal Biogeosciences (BG). The revised manuscript was not accepted.
Faculty \ School: Faculty of Science > School of Environmental Sciences
Related URLs:
Depositing User: Pure Connector
Date Deposited: 08 Jan 2018 12:28
Last Modified: 08 Jan 2019 00:55
URI: https://ueaeprints.uea.ac.uk/id/eprint/65887
DOI: 10.5194/bg-2017-73

Actions (login required)

View Item