Sea-to-air fluxes of N2O and CO2 in the Benguela upwelling system

Arevalo-Martinez, Damian L., Steinhoff, Tobias, Werner, J., Körtzinger, Arne, Rehder, G. and Bange, Hermann W. (2014) Sea-to-air fluxes of N2O and CO2 in the Benguela upwelling system [Poster] In: SOPRAN Annual Meeting 2014, 25.-26.03.2014, Bremen, Germany.

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High resolution measurements of surface oceanic and atmospheric N2O and CO2 were carried out during two cruises off Angola/Namibia in July-August 2013. A novel system based upon off-axis integrated cavity output spectroscopy (OA-ICOS) was coupled to a well-established GO System (General Oceanics, Inc.) in order to perform a detailed survey of the surface distributions of these gases during the upwelling season. Our observations show high supersaturations of both gases all along the cruise tracks as well as stronger gradients in transects closer to the coast, suggesting strong (though localized) N2O and CO2 outgassing to the atmosphere. Here we present the preliminary results of these surveys and explore the potential mechanisms explaining the distribution and sea-to-air fluxes of both gases.

Document Type: Conference or Workshop Item (Poster)
Keywords: N2O CO2 Sea-to-air flux Benguela upwelling
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
OceanRep > The Future Ocean - Cluster of Excellence
Projects: SOPRAN, Future Ocean
Date Deposited: 24 Apr 2014 10:32
Last Modified: 04 May 2015 07:39

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