The national Oceanography partnership Program (NOPP) is a joint research project sponsored by the US Office of Naval Research (ONR) and the National Center for Environmental Predictions (NCEP).
The aim of this research program is to significantly improve the capabilities of wind-wave prediction models. Attention is primarily given to improvements in the source terms, numerics and driving wind fields.
Improvements in modelling technology are incorporated into the Wavewatch III (mainly deep water) and SWAN (mainly shallow water) wave prediction models.
An overview of this project is given in: Tolman, H.L., M. L. Banner, and J.M. Kaihatu, 2013: The NOPP operational wave model improvement project. Ocean Modelling, 70, 2-10