Our consortium brought together all European national measurement institutes that are active in the field of optical atomic clocks, as well as experts in general relativity theory and in regional and global gravity field modelling. The project coordinator was Dr Helen Margolis from NPL.

	National Physical Laboratory (NPL) UK
	Cesky Metrologicky Institut (CMI) Czech Republic
	Istituto Nazionale di Ricerca Metrologica (INRiM) Italy
	Laboratoire National de Métrologie et d'Essais (LNE) France
	Teknologian tutkimuskeskus VTT Oy Finland
	Observatoire de Paris (OBSPARIS), SYRTE laboratory France
	Physikalisch-Technische Bundesanstalt (PTB) Germany

We had an associated researcher excellence grant (REG)

Gottfried Wilhelm Leibniz Universität Hannover (LUH) Germany

OBSPARIS worked closely with the following linked third parties:

	Centre National de la Recherche Scientifique (CNRS) France
	Université Pierre et Marie Curie - Paris 6 (UPMC) France

We also had an associated researcher mobility grant (RMG)

Cesky Metrologicky Institut (CMI) Czech Republic

Collaborators

• Laboratoire Souterrain de Modane
  France

• Institute of Metrology of Bosnia and Herzegovina
  Bosnia and Herzegovina

• DIATI-POLITO (Politecnico di Torino)
  Italy

• Observatoire Royal de Belgique
  Belgium

• TimeTech GmbH
  Germany

• National Institute of Information and Communications Technology
  Japan

• National Institute of Standards and Technology
  USA

The research within this EURAMET joint research project receives funding from the European Community's Seventh Framework Programme, ERA-NET Plus, under Grant Agreement No. 217257.