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Net Community Production in the Southern Ocean: Insights From Comparing Atmospheric Potential Oxygen to Satellite Ocean Color Algorithms and Ocean Models

Publication ,  Journal Article
Nevison, C; Munro, D; Lovenduski, N; Cassar, N; Keeling, R; Krummel, P; Tjiputra, J
Published in: Geophysical Research Letters
October 16, 2018

The contribution of oceanic net community production (NCP) to the observed seasonal cycle in atmospheric potential oxygen (APO) is estimated at Cape Grim, Tasmania. The resulting APONCP signal is compared to satellite and ocean model-based estimates of POC export and NCP across the Southern Ocean. The satellite products underestimate the amplitude of the observed APONCP seasonal cycle by more than a factor of 2. Ocean models suggest two reasons for this underestimate: (1) Current satellite products substantially underestimate the magnitude of NCP in early spring. (2) Seasonal O2 outgassing is supported in large part by storage of carbon in DOC and living biomass. More DOC observations are needed to help evaluate this latter model prediction. Satellite products could be improved by developing seasonally dependent relationships between remote sensing chlorophyll data and in situ NCP, recognizing that the former is a measure of mass, the latter of flux.

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Published In

Geophysical Research Letters

DOI

EISSN

1944-8007

ISSN

0094-8276

Publication Date

October 16, 2018

Volume

45

Issue

19

Start / End Page

10 / 559

Related Subject Headings

  • Meteorology & Atmospheric Sciences
 

Citation

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Nevison, C., Munro, D., Lovenduski, N., Cassar, N., Keeling, R., Krummel, P., & Tjiputra, J. (2018). Net Community Production in the Southern Ocean: Insights From Comparing Atmospheric Potential Oxygen to Satellite Ocean Color Algorithms and Ocean Models. Geophysical Research Letters, 45(19), 10–559. https://doi.org/10.1029/2018GL079575
Nevison, C., D. Munro, N. Lovenduski, N. Cassar, R. Keeling, P. Krummel, and J. Tjiputra. “Net Community Production in the Southern Ocean: Insights From Comparing Atmospheric Potential Oxygen to Satellite Ocean Color Algorithms and Ocean Models.” Geophysical Research Letters 45, no. 19 (October 16, 2018): 10–559. https://doi.org/10.1029/2018GL079575.
Nevison C, Munro D, Lovenduski N, Cassar N, Keeling R, Krummel P, et al. Net Community Production in the Southern Ocean: Insights From Comparing Atmospheric Potential Oxygen to Satellite Ocean Color Algorithms and Ocean Models. Geophysical Research Letters. 2018 Oct 16;45(19):10–559.
Nevison, C., et al. “Net Community Production in the Southern Ocean: Insights From Comparing Atmospheric Potential Oxygen to Satellite Ocean Color Algorithms and Ocean Models.” Geophysical Research Letters, vol. 45, no. 19, Oct. 2018, pp. 10–559. Scopus, doi:10.1029/2018GL079575.
Nevison C, Munro D, Lovenduski N, Cassar N, Keeling R, Krummel P, Tjiputra J. Net Community Production in the Southern Ocean: Insights From Comparing Atmospheric Potential Oxygen to Satellite Ocean Color Algorithms and Ocean Models. Geophysical Research Letters. 2018 Oct 16;45(19):10–559.
Journal cover image

Published In

Geophysical Research Letters

DOI

EISSN

1944-8007

ISSN

0094-8276

Publication Date

October 16, 2018

Volume

45

Issue

19

Start / End Page

10 / 559

Related Subject Headings

  • Meteorology & Atmospheric Sciences