Combined CO2, O2 and APO fluxes in the tropical North Atlantic Ocean Contact: Björn Fiedler (bfiedler@geomar.de)Main sub-project objectives are: - Examination of spatial and temporal (daily to seasonal) variability of surface ocean O2, CO2 and APO and corresponding air-sea fluxes in focus regions (CV, Mauritanian upwelling, equatorial upwelling); - Examination of O2, CO2 and APO patterns and dynamics from phase I & II with respect to driving mechanisms; - Preparation and evaluation of combined flux O2, CO2, and APO products for ETNA; - Assessment of vulnerability of observed gas fluxes and source/sink patterns to expected climate change. The overall goal of this proposed work is therefore to put the data acquired within the sub-project into the wider regional and scientific context by combining them with all other available data to produce regional flux products including a detailed analysis thereof.  Fig.1: Annual
cycle for air-sea gas exchange of CO2 as observed at the Cape Verde Ocean
Observatory | CVOO (Fiedler, 2013).
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