Le Moigne, Frédéric A C (2013): Global database of surface ocean particulate organic carbon export fluxes diagnosed from the 234Th technique [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.809717, Supplement to: Le Moigne, Frédéric A C; Henson, Stephanie A; Sanders, Richard J; Madsen, Esben (2013): Global database of surface ocean particulate organic carbon export fluxes diagnosed from the 234Th technique. Earth System Science Data, 5, 295-304, https://doi.org/10.5194/essd-5-295-2013
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Abstract:
Through the processes of the biological pump, carbon is exported to the deep ocean in the form of dissolved and particulate organic matter. There are several ways by which downward export fluxes can be estimated. The great attraction of the 234Th technique is that its fundamental operation allows a downward flux rate to be determined from a single water column profile of thorium coupled to an estimate of POC/234Th ratio in sinking matter. We present a database of 723 estimates of organic carbon export from the surface ocean derived from the 234Th technique. Data were collected from tables in papers published between 1985 and 2013 only. We also present sampling dates, publication dates and sampling areas. Most of the open ocean Longhurst provinces are represented by several measurements. However, the Western Pacific, the Atlantic Arctic, South Pacific and the South Indian Ocean are not well represented. There is a variety of integration depths ranging from surface to 220m. Globally the fluxes ranged from -22 to 125 mmol of C/m**2/d. We believe that this database is important for providing new global estimate of the magnitude of the biological carbon pump.
Related to:
Amiel, David; Cochran, J Kirk; Hirschberg, David J (2002): 234Th/238U disequilibrium as an indicator of the seasonal export flux of particulate organic carbon in the North Water. Deep Sea Research Part II: Topical Studies in Oceanography, 49(22-23), 5191-5209, https://doi.org/10.1016/S0967-0645(02)00185-6
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Coverage:
Median Latitude: 3.006074 * Median Longitude: -23.526377 * South-bound Latitude: -76.500000 * West-bound Longitude: -175.600000 * North-bound Latitude: 88.160000 * East-bound Longitude: 178.810000
Date/Time Start: 1987-06-06T00:00:00 * Date/Time End: 2010-08-07T00:00:00
Minimum DEPTH, water: 75 m * Maximum DEPTH, water: 210 m
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Identification | ID | Le Moigne, Frédéric A C | |||
| 2 | LATITUDE | Latitude | Geocode | |||
| 3 | LONGITUDE | Longitude | Geocode | |||
| 4 | DATE/TIME | Date/Time | Geocode | |||
| 5 | Date/time end | Date/time end | Le Moigne, Frédéric A C | |||
| 6 | Day of the year | DOY | day | Le Moigne, Frédéric A C | ||
| 7 | Thorium-234, flux | 234Th flux | dpm/m2/day | Le Moigne, Frédéric A C | ||
| 8 | Carbon, organic, flux | TOC flux | mmol/m2/day | Le Moigne, Frédéric A C | ||
| 9 | Carbon, organic, flux | TOC flux | mg/m2/day | Le Moigne, Frédéric A C | ||
| 10 | - | - | Le Moigne, Frédéric A C | ThE ratio in situ, if reported | ||
| 11 | Primary production of carbon per area, daily | PP C area | g/m2/day | Le Moigne, Frédéric A C | in situ, if reported | |
| 12 | DEPTH, water | Depth water | m | Geocode | ||
| 13 | Comment | Comment | Le Moigne, Frédéric A C | |||
| 14 | Reference/source | Reference | Le Moigne, Frédéric A C |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
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4621 data points
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