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Author |
Amon, RMW; Budéus, G; Meon, B |
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Title |
Dissolved organic carbon distribution and origin in the Nordic Seas: Exchanges with the Arctic Ocean and the North Atlantic |
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Journal Article |
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2003 |
Publication |
Journal of Geophysical Research |
Abbreviated Journal |
J Geophys Res |
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Volume |
108 |
Issue |
C7 |
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Keywords |
dissolved organic matter; dissolved organic carbon; chromophoric dissolved organic matter; fluorescence; vertical carbon transport |
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Abstract |
Dissolved organic carbon (DOC) and in situ fluorescence were measured along with hydrographic parameters in the Greenland, Iceland, and Norwegian Seas (Nordic Seas). Surface (<100 m) concentrations of DOC ranged from 60 to 118 µM with elevated values in the East Greenland Current (EGC) which transports water from the Arctic Ocean to the North Atlantic. EGC surface waters also showed a pronounced fluorescence maximum between 30 and 120 m depth in all EGC sections indicating the abundance of Arctic river derived DOC in this current. Based on fluorescence we estimated that 20-50% of the annual river discharge to the Arctic Ocean was exported in the EGC. The fluorescence maximum was typically associated with salinity around 33 and temperatures below -1°C which are characteristic of surface and upper halocline water in the Arctic Ocean. The elevated fluorescence in this water mass suggests a strong Eurasian shelf component and also suggests that in situ fluorescence could be used to trace Eurasian shelf water in the central Arctic Ocean. DOC concentrations in the Nordic Sea basins (>1000 m) were relatively high (~50 µM DOC) compared with other ocean basins indicating active vertical transport of DOC in this region on decadal timescales. Based on existing vertical transport estimates and 15 µM of semilabile DOC we calculated an annual vertical net DOC export of 3.5 Tg C yr-1 in the Greenland Sea and about 36 Tg C yr-1 for the entire Arctic Mediterranean Sea (AMS) including the Greenland-Scotland Ridge overflow. It appears that physical processes play a determining role for the distribution of DOC in the AMS. |
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American Geophysical Union |
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Washington, DC |
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English |
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English |
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Nordic Seas |
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refbase @ user @ ms |
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5 |
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Author |
Thomas, DN; Dieckmann, GS (eds) |
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Title |
Sea ice – an introduction to its physics, chemistry, biology and geology |
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Book Whole |
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Year |
2003 |
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402 pp |
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Keywords |
Sea Ice |
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Abstract |
Sea ice, which covers up to 7% of the planet's surface, is a major component of the world's oceans, partly driving ocean circulation and global climate patterns. It provides a habitat for a rich diversity of marine organisms, and is a valuable source of information in studies of global climate change and the evolution of present day life forms. Increasingly, sea ice is being used as a proxy for extraterrestrial ice covered systems.
Sea Ice provides a comprehensive review of our current available knowledge of polar pack ice, the study of which is severely constrained by the logistic difficulties of working in such harsh and remote regions of th
e earth. The book's editors, Drs Thomas and Dieckmann have drawn together an impressive group of international contributing authors, providing a well-edited and integrated volume, which will stand for many years as the standard work on the subject. Contents of the book include details of the growth, microstructure and properties of sea ice, large-scale variations in thickness and characteristics, its primary production, micro-and macrobiology, sea ice as a habitat for birds and mammals, sea ice biogeochemistry, particulate flux, and the distribution and significance of palaeo sea ice. |
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Thomas: School of Ocean Sciences, University of Wales, Bangor, UK; Dieckmann: Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany |
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Blackwell Science Ltd |
Place of Publication |
Oxford |
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Thomas, DN; Dieckmann, GS |
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English |
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0-632-05808-0 |
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40 Illustrations |
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yes |
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refbase @ user @ library-34/436/1 |
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7 |
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Author |
Lohrmann, A; Cabrera, R; Kraus, NC |
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Title |
Acoustic-doppler velocimeter (ADV) for laboratory use |
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1994 |
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Fundamentals and advancements in hydraulic measurements and experimentation. Proceedings, Hydraulic Division/ASCE, August 1994 |
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351-365 |
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methods; flow; flume |
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Symposium on fundamentals and advancements in hydraulic measurements and experimentation |
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refbase @ user @ |
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8 |
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Author |
de Castellvi, J (ed) |
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Title |
Actas des tercer symposium espanol de estudios Antarcticos. Gredos, 3 al 5 de octubre de 1989 |
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1990 |
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379 pp |
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Comision interministerial de Cienctia y Technologia |
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Madrid |
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de Castellvi, J |
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Spanish |
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refbase @ user @ library-32/19/20 |
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9 |
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Author |
Schleser, GH; Jayasekera, R |
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Title |
δ13C-variations of leaves in forests as an indication of reassimilated CO2 from the soil |
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Journal Article |
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Year |
1985 |
Publication |
Oecologia |
Abbreviated Journal |
Oecologia |
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Volume |
65 |
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536-542 |
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Keywords |
soil respiration; photosynthesis; vascular plant |
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refbase @ user @ ms |
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11 |
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