(Table 2) Seasonal flux data and percentages of major bulk components of total flux at the mesotrophic sediment trap site CB from 1988 - 2012 ...

• Main Authors: Fischer, Gerhard, Romero, Oscar E, Merkel, Ute, Donner, Barbara, Iversen, Morten Hvitfeldt, Nowald, Nicolas, Ratmeyer, Volker, Ruhland, Götz, Klann, Marco, Wefer, Gerold
• Format: Dataset
• Language: English
• Published: PANGAEA 2016
• Subjects: Event label; DEPTH, water; Sample comment; DATE/TIME; Date/time end; Sample code/label; Season; Date; Duration, number of days; Comment; Total mass, flux; Biogenic silica, flux, at time interval; Carbon, organic, flux, at time interval; Nitrogen, flux, at time interval; Calcium carbonate, flux, at time interval; Lithogenic, flux, at time interval; Biogenic silica; Carbon, organic, flux of total flux; Nitrogen, flux of total flux; Calcium carbonate, flux of total flux; Lithogenic, flux of total flux; Trap; Mooring; M6/6; M9/4; M12/1; M16/2; M29/3; POS310; M65/2; MSM04/4b; Meteor 1986; Poseidon; Maria S. Merian; Center for Marine Environmental Sciences MARUM; Geosciences, University of Bremen GeoB; South Atlantic in Late Quaternary Reconstruction of Budget and Currents SFB261; North Atlantic; North Atlantic oscillation
• Online Access: https://dx.doi.org/10.1594/pangaea.867251; https://doi.pangaea.de/10.1594/PANGAEA.867251

A more than two-decadal sediment trap record from the Eastern Boundary Upwelling Ecosystem (EBUE) off Cape Blanc, Mauritania, is analysed with respect to deep ocean mass fluxes, flux components and their variability on seasonal to decadal timescales. The total mass flux revealed interannual fluctuations which were superimposed by fluctuations on decadal timescales. High winter fluxes of biogenic silica (BSi), used as a measure of marine production (mostly by diatoms) largely correspond to a positive North Atlantic Oscillation (NAO) index (December-March). However, this relationship is weak. The highest positive BSi anomaly was in winter 2004-2005 when the NAO was in a neutral state. More episodic BSi sedimentation events occurred in several summer seasons between 2001 and 2005, when the previous winter NAO was neutral or even negative. We suggest that distinct dust outbreaks and deposition in the surface ocean in winter and occasionally in summer/autumn enhanced particle sedimentation and carbon export on ...