This working group aims to process, analyze and archive the physico-chemical and bio-optical data in formats that are compatible with the data storage system developed by working group no.1 (Organization and archiving).
These data come from sensors deployed aboard Tara during the expedition (more than 650 profiles were recorded down to 1500 m); from samples collected for subsequent analysis in partner laboratories; and from analysis of data from satellites and automatic sensors deployed in situ by international programs near TARA collection sites. This corresponds to over 50 physico-biogeochemical parameters (temperature, salinity, nitrates, oxygen, multispectral fluorescence, chlorophyll pigments, concentration of particles) plus satellite data (color of water, altimetry, currents, temperature) and data from autonomous sensors (temperature, salinity, fluorescence and sometimes O2).
This information is grouped under the term "environmental data" and will be used to characterize the water masses (and their level of organic production) from which were taken the imaging and sequencing data (working groups no. 3 and 4).
This working group is coordinated by Lars Stemmann at the Villefranche Oceanographic Observatory and involves the Oceans Physics Laboratory in Brest, the Dynamic Meteorology Laboratory in Paris, Pangaea and UMR 7144 of the Roscoff Biological Station.