@article{dfd318d9bffd495fb858de532ddbbf5b,
title = "Physical Controls on Oxygen Distribution and Denitrification Potential in the North West Arabian Sea",
abstract = "At suboxic oxygen concentrations, key biogeochemical cycles change and denitrification becomes the dominant remineralization pathway. Earth system models predict oxygen loss across most ocean basins in the next century; oxygen minimum zones near suboxia may become suboxic and therefore denitrifying. Using an ocean glider survey and historical data, we show oxygen loss in the Gulf of Oman (from 6–12 to <2 μmol kg−1) not represented in climatologies. Because of the nonlinearity between denitrification and oxygen concentration, resolutions of current Earth system models are too coarse to accurately estimate denitrification. We develop a novel physical proxy for oxygen from the glider data and use a high-resolution physical model to show eddy stirring of oxygen across the Gulf of Oman. We use the model to investigate spatial and seasonal differences in the ratio of oxic and suboxic water across the Gulf of Oman and waters exported to the wider Arabian Sea.",
keywords = "Arabian sea, Oman, denitrifcation, deoxygenation, eddies, glider",
author = "Queste, {Bastien Y.} and Cl{\'e}ment Vic and Heywood, {Karen J.} and Piontkovski, {Sergey A.}",
note = "Funding Information: This work was supported by the ONR GLOBAL grants N62909–14-1-N224/ SQU, Sultan Qaboos University grants EG/AGR/FISH/14/01 and IG/AGR/FISH/ 17/01, and UK NERC grants NE/M005801/1 and NE/N012658/1. We thank Benjamin G. M. Webber for his insightful comments during the writing of this manuscript, and we thank Burton Jones and the other reviewers for taking the time to review the manuscript. We are grateful to the UEA Seaglider Facility and Sultan Qaboos University technical staff for their technical help with instruments and deployments. We also extend our thanks to the Five Oceans Environmental Services consultancy, who saved a struggling glider at the drop of a hat. The glider data are available on request from the UEA Seaglider Facility and from the British Oceanographic Data Centre (doi:10.5285/697eb954-f60c-603b e053-6c86abc00062). Funding Information: This work was supported by the ONR GLOBAL grants N62909–14-1-N224/SQU, Sultan Qaboos University grants EG/AGR/FISH/14/01 and IG/AGR/FISH/17/01, and UK NERC grants NE/M005801/1 and NE/N012658/1. We thank Benjamin G. M. Webber for his insightful comments during the writing of this manuscript, and we thank Burton Jones and the other reviewers for taking the time to review the manuscript. We are grateful to the UEA Seaglider Facility and Sultan Qaboos University technical staff for their technical help with instruments and deployments. We also extend our thanks to the Five Oceans Environmental Services consultancy, who saved a struggling glider at the drop of a hat. The glider data are available on request from the UEA Seaglider Facility and from the British Oceanographic Data Centre (doi:10.5285/697eb954-f60c-603b-e053-6c86abc00062). Publisher Copyright: {\textcopyright}2018. The Authors.",
year = "2018",
month = may,
day = "16",
doi = "10.1029/2017GL076666",
language = "English",
volume = "45",
pages = "4143--4152",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "American Geophysical Union",
number = "9",
}