Particle fluxes of the bathypelagic sediment trap CVOO-3 in the eastern tropical North Atlantic for the period December 2009 until May 2011 ...

• Main Authors: Fischer, Gerhard, Karstensen, Johannes, Romero, Oscar E, Baumann, Karl-Heinz, Donner, Barbara, Hefter, Jens, Mollenhauer, Gesine, Iversen, Morten Hvitfeldt, Fiedler, Björn, Monteiro, Ivanice, Körtzinger, Arne
• Format: Article in Journal/Newspaper
• Language: English
• Published: PANGAEA 2016
• Subjects: Center for Marine Environmental Sciences MARUM; North Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.867116; https://doi.pangaea.de/10.1594/PANGAEA.867116

Particle fluxes at the Cape Verde Ocean Observatory (CVOO) in the eastern tropical North Atlantic for the period December 2009 until May 2011 are discussed based on bathypelagic sediment trap time-series data collected at 1290 and 3439 m water depth. The typically oligotrophic particle flux pattern with weak seasonality is modified by the appearance of a highly productive and low oxygen (minimum concentration below 2 µmol kg**-1 at 40 m depth) anticyclonic modewater eddy (ACME) in winter 2010. The eddy passage was accompanied by unusually high mass fluxes of up to 151 mg m**-2 d**-1, lasting from December 2009 to May 2010. Distinct biogenic silica (BSi) and organic carbon flux peaks of ~15 and 13.3 mg m**-2 d**-1, respectively, were observed in February-March 2010 when the eddy approached the CVOO. The flux of the lithogenic component, mostly mineral dust, was well correlated with that of organic carbon, in particular in the deep trap samples, suggesting a tight coupling. The lithogenic ballasting obviously ... : Supplement to: Fischer, Gerhard; Karstensen, Johannes; Romero, Oscar E; Baumann, Karl-Heinz; Donner, Barbara; Hefter, Jens; Mollenhauer, Gesine; Iversen, Morten Hvitfeldt; Fiedler, Björn; Monteiro, Ivanice; Körtzinger, Arne (2016): Bathypelagic particle flux signatures from a suboxic eddy in the oligotrophic tropical North Atlantic: production, sedimentation and preservation. Biogeosciences, 13(11), 3203-3223 ...