The overall objective of NAOS is to consolidate and improve the French contribution to the international Argo observing system and to prepare the next scientific challenges for in-situ monitoring of the world ocean. NAOS is going to develop, validate and deploy the next generation of biogeochemical profiling floats in three pilot areas (Mediterranean, Arctic and North Atlantic).

NAOS is consolidating the French contribution to the Argo core mission (global temperature and salinity measurements down to 2000 m) and is contributing to the main evolutions foreseen for the next decade for Argo, in particular for biogeochemical observations. In the Mediterranean, NAOS is developing a pilot experiment for a regional array of biogeochemical floats (about 30 floats deployed since 2012). It is also developing a biogeochemical Argo component in the Arctic ocean as an obvious extension of the core Argo mission. Deep and O2 equipped floats are also deployed in the North Atlantic to characterize physical and biogeochemical dynamic.

Investissements d'Avenir

Investissements d'Avenir

The "Investment for the future" is a programme launched by the French Government to support stratgeic and ambitious initiatives to boost the rench competitiviness.



French Research Institute for Exploitation of the Sea



National Center for Scientific Research, or CNRS, public organization under the responsibility of the French Ministry of Education and Research.



University Pierre and Marie Curie, devoted to science and medicine, maintains also three marine stations on the coasts of France



Université Laval has been training, equipping, and guiding the decision makers who grapple with the major issues of society.

Canada Foundation for Innovation


The Canada Foundation for Innovation funds state-of-the-art infrastructure to allow researchers to push the boundaries of knowledge, explore the unknown and generate exciting outcomes that benefit humankind.

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Project Info:

  • Acronym:NAOS
  • Title:Novel Argo Ocean observing System
  • Started in: June 2011
  • Area of interest: NA Sub-Polar Gyre, Polar Areas,
  • Mediterranean Sea
  • Website:

Principal investigators:

Pierre Yves Le Traon, IFREMER, France
  • Affiliation:Institut Français de Recherche
  • pour l'Exploitation de la Mer
  • Country:France
  • Email:Pierre.Yves.Le.Traon at
  • Website: Personal home page
Fabrizio D’Ortenzio, LOV-CNRS-UPMC, France
  • Affiliation:Laboratoire d'Océanographie
  • de Villefranche (LOV)
  • Country:France
  • Email:fabrizio.dortenzio at
  • Website: Personal home page

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