Observing diel cycles of biogeochemical parameters with an autonomous Lagrangian surface drifter

Fiedler, Björn, Steinhoff, Tobias, Fietzek, Peer and Körtzinger, Arne and GEOMAR, Helmholtz Centre for Ocean Research (2012) Observing diel cycles of biogeochemical parameters with an autonomous Lagrangian surface drifter [Poster] In: SOLAS Open Science Conference, 07. - 10.05.2012, Cle Elum, Washington, USA.

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Abstract

During the SOPRAN cruise Maria S. Merian 18/3 in July 2011a Lagrangian surface drifter was deployed at four different stations in the eastern equatorial Atlantic during the peak of the equatorial upwelling season. The drifter was equipped with a sensor package measuring temperature, salinity, pCO2, O2, nitrate, fluorescence and gas tension in approximately 15 m depth at 1-minute intervals. During each 24-h deployment of the drifter accompanying CTD casts were conducted every four hours and additional parameters were sampled (Dissolved Inorganic Carbon, Alkalinity, Dissolved and Particular Organic Carbon, nutrients, Chlorophyll, O2). Here we present first data of the drift experiment, indicating diel variability of various biogeochemical parameters. The observations prove the drifter to be a powerful tool to observe diel cycles.

Document Type: Conference or Workshop Item (Poster)
Keywords: Meereswissenschaften; Marine chemistry; Biogeochemistry; Drifter, CO2, nutrients, diurnal cycles
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
Projects: SOPRAN
Date Deposited: 05 Jun 2012 06:41
Last Modified: 05 Jun 2012 06:41
URI: http://eprints.uni-kiel.de/id/eprint/14390

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