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Communication incl. Poster: BibTeX citation key:  Key
Key, E. & Subramaniam, A. 2009. Biophysical Variability in the Congo Plume and Gulf of Guinea. Work presented at Third International AMMA Conference, July 20—24, at Ouagadougou, Burkina Faso.
Added by: roussot 2009-10-22 21:26:20
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Categories: Aerosol and Chemistry, Atmospheric processes, Monsoon system and its variability, Ocean processes, Ocean-atmosphere interactions, Weather to Climatic modelling and forecasting
Creators: Key, Subramaniam
Publisher: African Monsoon Multidisciplinary Analyses (Ouagadougou, Burkina Faso)
Collection: Third International AMMA Conference

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Abstract
Utilizing the high resolution data from the PIRATA array, with a focus on the mooring located in the Congo River Plume at 6S, 8E, a study of the upper ocean biophysical variability during 2006-7 is conducted. The primary goal is to map and quantify variability in the latitudinal and longitudinal extent of Congo River Plume water, which previously had been detected as far as 700 km away from the mouth. This water mass is particularly difficult to differentiate in remote sensing data as it shares a northern boundary with a coastal upwelling zone. Also, depending on the wind forcing, it may form a broad, thin lens or be concentrated as a core water mass at 30-60m depth. Due to the high sediment load, it is not a productive zone near the coast; but beyond the confines of the Congo Canyon, the nutrient input contributes significantly to phytoplankton productivity. The placement of a mooring within the plume region during 2006-7 provided the first long-term measurement of water mass properties and currents in the Congo Plume outflow. Both the high resolution (10 minute to 1 hour) and seasonal time series are contrasted with previous Dutch and French expeditions to this area, as well as with other PIRATA moorings which located in the Gulf of Guinea. For the first time, an estimate of the contribution of diurnal variability in radiation and meteorology to the phytoplankton productivity is presented.
Added by: roussot