Global ocean carbon uptake

Metadata Label Value
Author(s) Wanninkhof, R., Park, G.-H., Takahashi, T., Sweeney, C., Feely, R., Nojiri, Y., Gruber, N., Doney, S. C., McKinley, G. A., Lenton, A., Le Quéré, C., Heinze, C., Schwinger, J., Graven, H., Khatiwala, S.
Publication Type Journal Items, Publication Status: Published
Full Text Search SFX for a Full-Text version of this document
Import to Mendeley Log in to provide feedback

Detailed Information

Metadata Field Content
Title Global ocean carbon uptake
Subtitle Magnitude, variability and trends
Author(s) Wanninkhof, R.
Park, G.-H.
Takahashi, T.
Sweeney, C.
Feely, R.
Nojiri, Y.
Gruber, N.
Doney, S. C.
McKinley, G. A.
Lenton, A.
Le Quéré, C.
Heinze, C.
Schwinger, J.
Graven, H.
Khatiwala, S.
Journal or Series Title Biogeosciences discussions
Volume Number 9
Issue Number 8
Start Page 10961
End Page 11012
ISSN 1810-6277
Publisher Katlenburg-Lindau
Publication Place European Geosciences Union
Publication Date 2012-08
Abstract Estimates of the anthropogenic global-integrated sea-air carbon dioxide (CO2) flux from 1990 to 2009, based on different models and measurements, range from –1.4 to –2.6 Pg C yr–1. The median values of anthropogenic CO2 for each method show better agreement and are: −1.9 for Pg C yr−1 for numerical ocean general circulation hind cast models (OGCMs) with parameterized biogeochemistry; –2.1 Pg C yr–1 for atmospheric inverse models; –1.9 Pg C yr–1 for global atmospheric constraints based on O2 / N2 ratios for 1990–2000; and –2.4 Pg C yr–1 for oceanic inverse models. An updated estimate of this anthropogenic CO2 flux based on a climatology of sea-air partial pressure of CO2 differences (ΔpCO2) (Takahashi et al., 2009) and a bulk formulation of gas transfer with wind speed for year 2000 is –2.0 Pg C yr–1. Using this ΔpCO2 climatology and empirical relationships of pCO2 with sea-surface temperature (SST) anomalies (Park et al., 2010a), the interannual variability of the contemporary CO2 flux is estimated to be 0.20 Pg C yr–1 (1σ) from 1990 through 2009. This is similar to the variability estimated by the OGCMs of 0.16 Pg C yr–1 but smaller than the interannual variability from atmospheric inverse estimates of 0.40 Pg C yr–1. The variability is largely driven by large-scale climate re-organizations. The decadal trends for different methods range from –0.13 (Pg C yr–1) decade–1 to –0.50 (Pg C yr−1) decade−1. The OGCMs and the data based sea-air CO2 flux estimates show smaller uptakes and appreciably smaller decadal trends than estimates based on changes in carbon inventory suggesting that methods capable of resolving shorter timescales are showing a slowing of the rate of ocean CO2 uptake. It is not clear if this large difference in trend is a methodological issue or a real natural feedback.
DOI 10.5194/bgd-9-10961-2012
Additional Notes Received 30 June 2012, Accepted 3 July 2012, Published 15 August 2012
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03731
Organisational Unit(s)
Source Database ID FORM-1359382570
Description File Name MIME Type Size
No details could be found
There are no links available for this record.
This record has not been viewed during this period

  author = "Wanninkhof, R. and Park, G.-H. and Takahashi, T. and Sweeney, C. and Feely, R. and Nojiri, Y. and Gruber, N. and Doney, S. C. and McKinley, G. A. and Lenton, A. and Le Qu{\'{e}}r{\'{e}}, C. and Heinze, C. and Schwinger, J. and Graven, H. and Khatiwala, S.",
  title = "{G}lobal ocean carbon uptake: {M}agnitude, variability and trends",
  journal = "Biogeosciences discussions",
  year = 2012,
  volume = "9",
  number = "8",
  pages = "10961--11012",
  month = aug,

E-Citations record created: Mon, 28 Jan 2013, 14:16:16 CET