A global ocean carbon climatology: Results from Global Data Analysis Project (GLODAP)
Tóm tắt
During the 1990s, ocean sampling expeditions were carried out as part of the World Ocean Circulation Experiment (WOCE), the Joint Global Ocean Flux Study (JGOFS), and the Ocean Atmosphere Carbon Exchange Study (OACES). Subsequently, a group of U.S. scientists synthesized the data into easily usable and readily available products. This collaboration is known as the Global Ocean Data Analysis Project (GLODAP). Results were merged into a common format data set, segregated by ocean. For comparison purposes, each ocean data set includes a small number of high‐quality historical cruises. The data were subjected to rigorous quality control procedures to eliminate systematic data measurement biases. The calibrated 1990s data were used to estimate anthropogenic CO2, potential alkalinity, CFC watermass ages, CFC partial pressure, bomb‐produced radiocarbon, and natural radiocarbon. These quantities were merged into the measured data files. The data were used to produce objectively gridded property maps at a 1° resolution on 33 depth surfaces chosen to match existing climatologies for temperature, salinity, oxygen, and nutrients. The mapped fields are interpreted as an annual mean distribution in spite of the inaccuracy in that assumption. Both the calibrated data and the gridded products are available from the Carbon Dioxide Information Analysis Center. Here we describe the important details of the data treatment and the mapping procedure, and present summary quantities and integrals for the various parameters.
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Tài liệu tham khảo
Broecker W. S., 2003, Treatise on Geochemistry, 1
M. E. Conkright S. Levitus 2002 Natl. Oceanic and Atmos. Admin. Silver Spring Md.
Department of Energy A. G. Dickson C. Goyet 1994 Carbon Dioxide Inf. and Anal. Cent. Oak Ridge Natl. Lab. Oak Ridge Tenn.
Dickson A. G., 2001, Reference materials for oceanic CO2 measurements, Oceanography, 14, 21
Fiadiero M. E., 1982, Three‐dimensional modeling of tracers in the deep Pacific Ocean: Radiocarbon and the circulation, J. Mar. Res., 40, 537
L. S. Gandin 1963 Hydrometeoizdat St. Petersburg Russia.
Goyet C. R.Healy andJ.Ryan(2000) Global distribution of total inorganic carbon and total alkalinity below the deepest winter mixed layer depths ORNL/CDIAC‐127 28 pp. Carbon Dioxide Inf. Anal. Cent. Oak Ridge Natl. Lab. Oak Ridge Tenn.
Joyce T. andC.Corry(Eds.) (1994) Requirements for WOCE Hydrographic Programme Data Reporting WHPO Pub. 90‐1 Rev. 2 145 pp. WOCE Hydrogr. Programme Off. La Jolla Calif.
Key R. M.(1997) Changes in the Pacific Ocean distribution of radiocarbon since GEOSECS 1997 U.S. WOCE Implement. Rep. 9 U.S. World Ocean Circ. Exp. Off. College Station Texas.
S. Levitus T. P. Boyer 1994 Natl. Oceanic and Atmos. Admin. Silver Spring Md.
S. Levitus T. P. Boyer 1994 Natl. Oceanic and Atmos. Admin. Silver Spring Md.
S. Levitus R. Burgett T. P. Boyer 1994 Natl. Oceanic and Atmos. Admin. Silver Spring Md.
Lewis E. andD. W. R.Wallace(1998) Program developed for CO2system calculations ORNL/CDIAC‐105 21 pp. Carbon Dioxide Inf. Anal. Cent. Oak Ridge Natl. Lab. Oak Ridge Tenn.
Matsumoto K., 2004, Global Environmental Change in the Ocean and on Land, 45
Sarmiento J. L. J.Willebrand andS.Hellerman(1982) Objective analysis of tritium observations in the Atlantic Ocean during 1971–1974 Tech. Rep. 1 19 pp. Ocean Tracer Lab. Princeton N. J.
Stuiver M., 1996, Large volume WOCE radiocarbon sampling in the Pacific Ocean, Radiocarbon, 38, 519, 10.1017/S0033822200030083
U.N. Educational, Scientific, and Cultural Organization, 1981, Tenth report of the joint panel on oceanographic tables and standards, UNESCO Tech. Pap. Mar. Sci., 36, 13
Wanninkhof R. T.‐H.Peng B.Huss C. L.Sabine andK.Lee(2003) Comparison of inorganic carbon system parameters measured in the Atlantic Ocean from 1990 to 1998 and recommended adjustments ORNL/CDIAC‐140 43 pp. Carbon Dioxide Inf. Anal. Cent. Oak Ridge Natl. Lab. Oak Ridge Tenn.