Between November 7 and 11 of 2011, in UNESCO facilities in Paris, France, took place the XII Meeting of the Group of Experts from the Intergovernmental Oceanographic Commission (IOC) on matters relating to the Global Sea Level Observing System (GLOSS), the Workshop on storm rises and extreme sea level and the need of high quality data of sea level in real time, in addition to the Workshop focused in the spacial methods for the vertical control of mareographs.

The events gathered 67 representatives of countries from all continents, data centers recognized by the GLOSS program of IOC, governmental agencies and scientific entities. In representation of Chile attended CE Mr. Juan FIERRO C., Chief of Coastal Dynamics Division of the Hydrographic and Oceanographic Service of the Navy (SHOA).

Workshops developed allowed checking the usefulness of having sea level data in real time, mainly in the context of oceanographic modeling and the progress made in the vertical control of mareographs; aspects that enabled the preparation of relevant recommendations in such areas for their consideration by the Group of Experts of GLOSS.

The Chilean delegate carried out presentations describing the current state of the Chilean sea level station network with an emphasis on the renewal process and densification of it within the frame of the National Tidal Wave Warning System (SNAM) In addition the national representative as member of the Tidal and Water Level Working Group (TWLWG) of the International Hydrographic Organization (IHO), explained to the plenary the activities carried out by the TWLWG in the area of sea level and its applications in the hydrographic work.