Optimal interpolation of partitions : a data assimilation scheme for NEDWAM-4 : description and evaluation of the period November 1995 - October 1996

A new data assimilation scheme for NEDWAM4, optimal interpolation of partitions (OIP), is presented, including a detailed description of the software.
Results are evaluated of a test over 12 months, in which two parallel wave model versions were run 4 times a day, one with and one without assimilation.
First, some examples are described.
Then, statistics over the whole period are given.