Joint Global Ocean Flux Study

A major opportunity to test the use of " Th as a proxy for POC flux arose with the Joint Global Ocean Flux Study (JGOFS). JGOFS had as a central goal a better understanding of the ocean carbon cycle, including the flux of POC leaving the euphotic zone. Process studies were carried out in the Atlantic Ocean, Pacific Ocean, Arabian Sea and Southern Ocean. " Th profiles were obtained as a part of each process study. 

An early attempt to resolve the discrepancy between the high values of Sugimura and Suzuki (1988) and more traditional analyses failed to reach a definitive conclusion (Williams, 1992). The start of the Joint Global Ocean Flux Study (JGOFS) field program with the North Atlantic Bloom Experiment in 1989 put additional pressure on the various groups to resolve this issue quickly. The National Science Foundation (NSF) and the National Oceanic and Atmospheric Administration (NOAA) funded a workshop held in Seattle in July 1991 to resolve the issue. 

The urgent need for nutrient standards was demonstrated during the recently completed World Ocean Circulation Experiment (WOCE) and Joint Global Ocean Flux Study (JGOFS) measurements which were made by different laboratories. The internal consistency of the nutrient data was evaluated by comparing measurements made in deep water (depth over 3500 m) at nearby stations on different cruises. If one assumes that nutrient concentrations in deep water at the same location should not... 

JGOFS Joint Global Ocean Flux Study... 

International Water Management Institute Japan Aerospace exploration Agency Japanese Earth Resources Satellite Joint Global Ocean Flux Study European Union s Joint Research Center Kansk-Achinsk s Fossil-Energy Complex Kara Bogaz Gol Kyoto Protocol... 

Uher G, Schebeske G, Barlow RG, Cummings DG, Mantoura RFC, Rapsomanikis SR, Andreae MO (2000) Distribution and air-sea gas exchange of dimethyl sulphide at the European western continental margin. Mar Chem 69 277-300 UNESCO (1994) Protocols for the Joint Global Ocean Flux Study (JGOFS). Core Measurements, Scientific committee on Oceanic Research Manual and Guides 29 170... 

Based on data from the World Ocean Circulation Experiment, average profile. Estimated uncertainty about 20%. Average profile from 4 process studies of the Joint Global Ocean Flux Study data, see also Fig. 1.3. Estimated uncertainty about 20%. 

JGOFS. (1996). JGOFS Report 19. Protocols for the Joint Global Ocean Flux Study QGOFS) Core Measurements. Intergovernmental Oceanographic Commission. 

Christian, J. R., and Karl, D. M. (1994). Microbial community structure at the United-States Joint Global Ocean Flux Study Station Aloha—Inverse methods for estimating biochemical indicator ratios. /. Geophys. Res.-Oceans 99, 14269—14276. 

Knap, A. H., Michaels, A. P., Steinberg, D., Bahr, P., Bates, N., Bell, S., Countway, P., Close, A. R., Doyle, A. P., Dow, R. L., Howse, P. A., Gundersen, K., et al. (1997). U.S. Joint Global Ocean Flux Study. Bermuda Atlantic Time-Series Study. Bermuda Adantic Time-Series Study/U.S. JGOFS Planning Office, Woods Hole, MA. 

Knap, A., Michaels, A., Close, A., Ducklow, H., and Dickson, A. (1996). Protocols for the Joint Global Ocean Flux Study (JGOFS) core measurements. UNESCO, Paris. JGOFS Report No. 19,... 

Joint Global Ocean Flux Study) time-series stations. The results in Figure 9 compare from the TOPEX satellite with the predictive parame-... 

Boehm A. B. and Grant S. B. (2002) A steady state model of particulate organic carbon flux below the mixed layer and application to the Joint Global Ocean Flux Study. J. Geophys. Res. Oceans 106(C12), 31227-31237. 

Martin W. R. and Sayles F. L. (2003) Metabolically driven calcite dissolution in deep-sea sediments. Abstracts of the Joint Global Ocean Flux Study Open Science Conference, May 4-8, 2003, Washington, DC. 

Fasham, M.I.R., Balino, B.M. and Bowles, M.C. (eds) (2001) A New Vision of Ocean Biogeochemistry After a Decade of the Joint Global Ocean Flux Study (JGOFS), Ambio, Special Report No. 10, The Royal Swedish Academy of Sciences, Uddevalla. 

---