Archiving environmental data products has become recognized as a vital research practice: it improves our ability to reproduce results and perform additional analyses while saving the cost of redundant data collection activities.

The same rationale applies to archiving numerical models. Archived models will provide the methodological detail of numerical modeling studies to recreate published modeling results, enabling the synthesis of results across modeling studies and the investigation of new hypotheses. In addition, archived models will allow determination of uncertainties for comparison with results from other models in assessment / policy studies. The model source code will also allow others to see how models treat individual processes.

Please note that the relevance and accuracy of output produced from archived versions of model code are the sole responsibility of the individual conducting the simulations. The model archive is intended as a resource for experienced modelers.

A document by Thornton et al. (2005) presents a set of recommended "best practices" aimed at raising the standards for reproducibility in numerical modeling studies.

Find and order models:

• See list of models
• Browse by attributes

Download models directly:

• FTP site

We are creating a two-tiered archive for numerical models. The first tier supports the storage and retrieval of benchmark model versions, and the second tier supports the association of published research results with specific model implementations. These archived models serve as examples for raising the standards for reproducibility in numerical modeling studies.

The model archive contains comprehensive model documentation, input files, source code, code version, output files, and output analysis approaches or software used to produce tables and figures for a particular publication.