Co-Convenors: Harold P. Batchelder (U.S.A.), Shin-ichi Ito (Japan), Angelica Peña (Canada) and Yvette Spitz (U.S.A.)

Invited Speaker:
Jerome Fiechter (University of California Santa Cruz, U.S.A.)
Yvette Spitz (Oregon State University, U.S.A.)

The objective of the Marine Ecosystem Model Inter-comparison Project (MEMIP) is to compare the performance of various lower trophic level marine ecosystem simulation models at predicting the abundance and distribution of coastal zooplankton functional groups. During the series of workshops, three test beds (Newport, Seward, and A-Line) were selected, and eight potential ecosystem models (NPZD+, NAPZD+, NEMURO, COSINE, NPZDFe, Nemuro-Fe, Nemuro-K5 and Biology) were identified to be embedded in ROMS-2D models. The focus of this 4th MEMIP workshop will be quantitative model-model and model-data analysis and comparison of the results of the simulations. Prior to this workshop, different ecosystem models embedded in ROMS-2D will have simulated several 3-4 specific years at each test bed. At the workshop, the results of different ecosystem models within each test bed will be compared. The combination of different years, multiple ecosystem models and three egions
should provide sufficient runs to enable ensemble-based estimates of the uncertainty of ecosystem hindcasts, which will provide information needed for assessing FUTURE coupled ecosystem-physical forecast products.