High-Quality CO2 and O2 Measurements from a Profiling Float at the Cape Verde Observatory (CVO).

Fiedler, Björn, Fietzek, Peer, Vieira, N., Kozlova, E., Heimann, M. and Körtzinger, Arne (2011) High-Quality CO2 and O2 Measurements from a Profiling Float at the Cape Verde Observatory (CVO). [Poster] In: 4. Annual SOPRAN Meeting. , 22.-23.03.2011, Heidelberg, Germany .

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Abstract

Investigations of biogeochemical dynamics in the ocean depend first and foremost on the measurement capabilities in an adequate time and space domain. One limited approach for obtaining high (spatio-temporal) resolution in situ data is aimed at the ARGO observatory. With the intention to extend this platform for biogeochemical observations around the Cape Verde Ocean Observatory (CVOO) we modified and operated a NEMO profiling float successfully, equipped with CO2 partial pressure (pCO2) and O2 sensors for the first time. In cooperation with our local partner in Cape Verde (INDP) two campaigns were conducted at CVOO (Nov. 2010 – Feb. 2011) during which the instrument recorded 60 profiles in the upper 200 m of the water column. Each profile contains high resolution data for pCO2, oxygen, salinity, temperature, and pressure. First, we present instrument design and conducted campaigns. Second, we give a brief overview of data processing and quality of obtained measurements. Third, air-sea flux estimations derived from float- and land-based (CVAO) measurements will be shown.

Document Type: Conference or Workshop Item (Poster)
Keywords: Marine chemistry; SOPRAN; Cape Verde Observatory; CVO; Float
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
Projects: SOPRAN
Date Deposited: 02 Nov 2011 12:51
Last Modified: 23 Feb 2012 05:57
URI: http://oceanrep.geomar.de/id/eprint/12475

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