Review of ocean observing systems in the SES and recommendations on upgrades to serve PERSEUS needs

This PERSEUS deliverable provides an overall summary of the existing observational capabilities in the Southern European Seas (SES), including Lagrangian observations with floats and drifters, measurements from ships of opportunity and from fixed moorings, classical oceanographic surveys, local and coastal observing networks, and observations collected by glider and satellites. It summarizes and integrates the information compiled in the six internal reports from the sub-tasks of Task 3.1. This inventory of SES observing systems effective prior to the PERSEUS project is as complete as possible, although some omissions are inevitably possible. The existing observing capacities in the SES are analyzed, gaps are identified and recommendations are given on how to fill them in order to serve the scientific and socio-economical needs of PERSEUS and the more general scientific and strategic society needs of the SES area over the longer term, beyond PERSEUS.