A modeling study of the seasonal oxygen budget of the global ocean

View/ Open
Date
2007-05-09Author
Jin, X.
Concept link
Najjar, Raymond G.
Concept link
Louanchi, F.
Concept link
Doney, Scott C.
Concept link
Metadata
Show full item recordCitable URI
https://hdl.handle.net/1912/3610As published
https://doi.org/10.1029/2006JC003731DOI
10.1029/2006JC003731Keyword
New production; Remineralization; Dissolved oxygenAbstract
An ecosystem model embedded in a global ocean general circulation model is used to quantify roles of biological and physical processes on seasonal oxygen variations. We find that the thermally induced seasonal net outgassing (SNO) of oxygen is overestimated by about 30% if gas phase equilibrium is assumed, and we find that seasonal variations in thermocline oxygen due to biology are approximated well using the oxygen anomaly. Outside the tropics and the north Indian Ocean, biological SNO is, on average, 56% of net community production (defined as net oxygen production above 76 m) during the outgassing period and 35% of annual net community production. In the same region the seasonal drawdown of the oxygen anomaly within the upper thermocline (76–500 m) is 76% of the remineralization during the drawdown and 48% of annual remineralization. Applying model-derived relationships to observed O2 climatologies and using independent estimates for tropical and monsoonal systems, we estimate global net community production to be 14.9 ± 2.5 Pg C yr−1.
Description
Author Posting. © American Geophysical Union, 2007. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 112 (2007): C05017, doi:10.1029/2006JC003731.
Collections
Suggested Citation
Journal of Geophysical Research 112 (2007): C05017Related items
Showing items related by title, author, creator and subject.
-
On the pulmonary toxicity of oxygen : III. The induction of oxygen dependency by oxygen use
Shanklin, D. Radford (2010-05)Oxygen is central to the development of neonatal lung injury. The increase in oxygen exposure of the neonatal lung during the onset of extrauterine air breathing is an order of magnitude, from a range of 10-12 to 110-120 ... -
New insights into the marine oxygen cycle from manganese oxide minerals and reactive oxygen species
Sutherland, Kevin M. (Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2020-02)The redox cycling of oxygen between O2, water, and intermediate redox states including hydrogen peroxide and superoxide, has profound impact on the availability and distribution of dissolved O2, the habitability of the ... -
On the pulmonary toxicity of oxygen. 5. Electronic structure and the paramagnetic property of oxygen
Shanklin, D. Radford (2012-06-01)Oxygen uptake by the pulmonary circulation is a chemical reaction. The physicochemical attributesof oxygen are critical when studying pulmonary oxygen toxicity. Extent of lung injury depends onthe percentage of oxygen in ...