Carbon dioxide characteristics of water masses in the northern North Atlantic Ocean
| Autor: | de Henricus Baar, M. Kraak, M.H.C. Stoll, H.M. van Aken |
|---|---|
| Přispěvatelé: | Ocean Ecosystems |
| Rok vydání: | 1996 |
| Předmět: |
Water mass
TCO2 North Atlantic Deep Water North Atlantic General Chemistry Oceanography chemistry.chemical_compound hydrography chemistry Circumpolar deep water Carbon dioxide Deep ocean water Environmental Chemistry Mode water Thermohaline circulation Hydrography Geology Water Science and Technology |
| Zdroj: | Marine Chemistry, 55(3), 217-232. ELSEVIER SCIENCE BV |
| ISSN: | 0304-4203 |
| DOI: | 10.1016/s0304-4203(96)00058-8 |
| Popis: | Accurate measurements of total dissolved carbon dioxide (TCO 2 ) together with other tracers (Θ, S , O 2 , and nutrients) have been carried out during a hydrographic survey of a zonal section between Ireland and Greenland and a number of sections in the Iceland Basin. The resulting data, with > 1300 TCO 2 data points, have allowed the determination of the TCO 2 signature of the water masses in the northern North Atlantic Ocean in terms of seven water types. The structure of TCO 2 and dissolved phosphate and nitrate appears to be well correlated with the apparent oxygen utilization. This indicates that ageing of the water types, by mineralization of organic matter, is more important for the observed TCO 2 structure than differences in the preformed TCO 2 when the water types were formed. The overturning of water in the “oceanic conveyor belt” will support meridional TCO 2 transport. This transport was estimated at 0.16 · 10 −1 mol s −1 (−0.06 Gt a −1 C) from the differences of TCO 2 content between the northward flowing Surface and Sub-Polar Mode water and the southward flowing deep Iceland-Scotland and Denmark Strait Overflow Waters. |
| Databáze: | OpenAIRE |
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