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www.geosci-model-dev-discuss.net/3/1829/2010/
doi:10.5194/gmdd-3-1829-2010
© Author(s) 2010. This work is distributed
under the Creative Commons Attribution 3.0 License.
A comprehensive set of benchmark tests for a land surface model of simultaneous fluxes of water and carbon at both the global and seasonal scale
1Centre for Ecology and Hydrology, Wallingford, OX10 8BB, UK
2Hadley Centre for climate prediction and research, Met Office, Joint Centre for Hydro-Meteorological Research, Wallingford, OX10 8BB, UK
3Department of Geography, Swansea University, Singleton Park, Swansea, SA2 8PP, UK
4School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, UK
Abstract. This paper describes a set of benchmark tests that is designed to quantify the performance of the land surface model that is used in the UK Hadley Centre General Circulation Model (JULES: Joint UK Land Environment Simulator). The tests are designed to assess the ability of the model to reproduce the observed fluxes of water and carbon at the global and regional spatial scale, and on a seasonal basis. Five datasets are used to test the model: water and carbon dioxide fluxes from ten FLUXNET sites covering the major global biomes, atmospheric carbon dioxide concentrations at four representative stations from the global network, river flow from seven catchments, the seasonal mean NDVI over the seven catchments and the potential land cover of the globe (after the estimated anthropogenic changes have been removed). The model is run in various configurations and results are compared with the data.
The results show that combined use of observations of carbon and water fluxes is essential in order to understand the causes of model errors. The benchmarking approach is suitable for application to other global models.
Discussion Paper (PDF, 924 KB) Interactive Discussion (Closed, 4 Comments) Final Revised Paper (GMD)
Notice on Discussion StatusCitation: Blyth, E., Clark, D. B., Ellis, R., Huntingford, C., Los, S., Pryor, M., Best, M., and Sitch, S.: A comprehensive set of benchmark tests for a land surface model of simultaneous fluxes of water and carbon at both the global and seasonal scale, Geosci. Model Dev. Discuss., 3, 1829-1859, doi:10.5194/gmdd-3-1829-2010, 2010. Bibtex EndNote Reference Manager XML
