1. THE FIXED-OPEN OCEAN OBSERVATORIES NETWORK Melchor González-Dávila & J. Magdalena Santana-Casiano Universidad de Las Palmas de Gran Canaria- SPAIN ULPGC D12.4 pH sensors deployed in real time in two Atlantic sites (ESTOC, PAP) and one Mediterranean (AEGEAN) site February 2015 D12.5 Conclusion on the capabilities of the different pH sensors. Inputs from the inter- comparison exercises February 2017

2. THE FIXED-OPEN OCEAN OBSERVATORIES NETWORK ULPGC D12.4 pH sensors deployed in real time in two Atlantic sites (ESTOC, PAP) and one Mediterranean (AEGEAN) site February 2015 SensorLab – ULPGC (spectrophotometric – colourmetric sensor) FIRST DEVELOPMENT ESTOC SITE

3. The PAP observatory site : in the inter-gyre region of the North Atlantic where convective mixing ranges from 25 m in the summer to over 400 m in winter when nutrients are supplied to the surface.

4. SST ranges from 12-13ºC during March to 18-19ºC in September http://www.eurosites.info/pap/data.php

6. http://data.plocan.eu/thredds/catalog.html June 2, 2014 Oct 11, 2014

7. SARONIKOS BUOY* JERICO TNA FixO 3 Buoy

9. THE FIXED-OPEN OCEAN OBSERVATORIES NETWORK SENSOR EVOLUTION 1 ST DESIGN  19  60 cm 2 ST DESIGN  21  50 cm 3 ST DESIGN  21  35 cm New lamp design 4 ST DESIGN  14  30 cm New mixing chamber New detection design Half power consumption Depth: 0 - 150 m **