GODAE is sponsored by
Evaluating the predictions
During GODAE a range of data assimilation methods is selected depending on the model, the application, and the real-time requirement for the analyses. Extensive validation of the assimilation analyses and their error estimates are required, as well as comparisons with non-assimilated data products to assess the value added by assimilation.
Throughout GODAE there is much to be gained from intercomparison of different models and model implementations (resolution, parameterisations, coordinate systems, sensitivity to different surface forcing data, etc.). The model-model and model-data intercomparisons and validation will help elucidate model development issues. For example, one critical issue for GODAE applications is the question of developments needed for nesting of even higher resolution coastal and regional models within global models.
The use of a variety of approaches to modelling is regarded as strength in the strategy of GODAE. Within a framework of intercomparison and progressive evaluations the diversity of approaches can be used to quantify uncertainties and test the reliability of ocean state estimates, initial conditions and forecasts.
(Last Updated: 16-10-2007)