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Numerical models have demonstrated their great importance in ocean, coastal and marine environment applications. Another important source of information are observations, both from satellite measurements and from direct in situ measurements. Data assimilation is a way of combining numerical models and observations, involving different methods and algorithms. Variational data assimilation is a method based on the minimization of the misfit between model simulation and the observation.

A variational data assimilation system based on the Ocean General Circulation Model Ispramix was implemented at the JRC-Ispra to assimilate ocean satellite observations. This report describes its application to the North Sea and further developments to assimilate analysis of sea surface temperature and sea surface height, and to estimate daily heat fluxes.

Additional information

Authors: OUBERDOUS M, Institute for Marine Research, Hamburg (DE);POHLMANN T, Institute for Marine Research, Hamburg (DE);STIPS A, European Commission, Joint Research Centre, Institutue for Environment and Sustainability, Ispra (IT)
Bibliographic Reference: EUR 20529 EN (2002), 56pp. Free of charge
Availability: Available from European Commission, JRC Knowledge Management Unit, Ispra (IT) Tel: +39 033278 9843 or +39 033278 9864 Fax: +39 033278 9623 E-mail:
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