1. Work Package 3 PROCEDURAL HARMONISATION Task 3.1: Assessment of procedures FixO3 General Assembly 14 th to the 16 th October 2014, Heraklion-CRETE Pericles Silva, NationaI nstitute for Fisheries Development. E-mail: pericles.silva@indp.gov.cv

2. WP 3 – Procedural Harmonisation Task 3.1: Assessment of procedures Part of the Cape Verde Observatory which consists of operational atmosphere and ocean monitoring sites for various climate-relevant environmental parameters in the tropical Eastern North Atlantic Ocean. MOORING: 17.6°N 24.3°W, HIDROSTATION: 17° 35.000' N -24° 17.000 ' E MOORING April 2014 - present description Measurements: Salinity, Temperature, Pressure, Oxygen, pCO2, ADCP, Currents, Sediment Trap, Fluorometer. (instruments, sensors, etc), CTD sensors on RV Islandia: Sea-Bird SBE 32 (12 niskins, 5L) Sea-Bird SBE 19plus (CTD) Sea-Bird SBE 33 (deck unit) Sea_Bird SBE 5T (pump) Sea-Bird SBE 43 (oxygen) Biospherical QSP-2350 (PAR) Biospherical QSP-2200 (PAR deck) WETLabs ECO FLNTURT (fluorescence/turbidity) LABORATORY Key persons involved data management: Bjoern Fiedler – Data manager (GEOMAR) Pericles Silva – Site Manager (INDP)

3. WP 3 – Procedural Harmonisation Task 3.1: Assessment of procedures Before sailing should test the operation of the - Carousel verifying communication with the CTD, recording data. All sampling bottles must be cleaned, tubes, gluves, reagents prepared, etc Maintenance/service: before and after all cruises. Calibration issues: should be done annualy (no budged). GPS loger connected for tracking.

4. WP 3 – Procedural Harmonisation Task 3.1: Assessment of procedures At the station, the CTD is prepared for the casts. Lower equipment to a depth of 7 m and keep that level for 5 minutes for the sensor to reach equilibrium. The downcast must be at a rate of 0.75 to 1 m s-1 to the desired depth (500m) Means: R/V Islandia After cast: Samples collected immediately. CTD rinsed with fresh water; pump filled with Milli-Q water; connection with silicone. Samples stored. Parameters: Salinity, Temperature, Nutrients, DO, DIC, TOC, POC/PON, TA, Chl-a Fluorescence/Turbidity, Photoactive radiation (PAR)

5. Data processing for each cruise consists of converting the raw data in scientific units from which variables of interest are calculated and some lab. Analyses. Data transfer:https://portal.geomar.de/group/cvoo/s Laboratory analyses: after cruises for DO, Nuts, Chl-a Data post processing: Data, metadata sent to GEOMAR. WP 3 – Procedural Harmonisation Task 3.1: Assessment of procedures