| Volumes and Issues Contents of Issue 3 |
www.geosci-model-dev-discuss.net/4/2199/2011/
doi:10.5194/gmdd-4-2199-2011
© Author(s) 2011. This work is distributed
under the Creative Commons Attribution 3.0 License.
CAM-chem: description and evaluation of interactive atmospheric chemistry in CESM
1National Center for Atmospheric Research, Boulder, CO, USA
2Cornell University, Ithaca, NY, USA
3Colorado State University, Fort Collins, CO, USA
4Jet Propulsion Laboratory, Pasadena, CA, USA
5Pacific Northwest National Laboratory, Richland, WA, USA
Abstract. We discuss and evaluate the representation of atmospheric chemistry in the global Community Atmosphere Model (CAM) version 4, the atmospheric component of the Community Earth System Model (CESM). We present a variety of configurations for the representation of tropospheric and stratospheric chemistry, wet removal, and online and offline meteorology. Results from simulations illustrating these configurations are compared with surface, aircraft and satellite observations. Overall, the model indicates a good performance when compared to observations. Major biases include a negative bias in the high-latitude CO distribution and a positive bias in upper-tropospheric/lower-stratospheric ozone, especially when online meteorology is used. The CAM-chem code as described in this paper, along with all the necessary datasets needed to perform the simulations described here, are available for download at http://www.cesm.ucar.edu.
Discussion Paper (PDF, 4470 KB) Supplement (6747 KB) Interactive Discussion (Closed, 11 Comments) Final Revised Paper (GMD)
Notice on Discussion StatusCitation: Lamarque, J.-F., Emmons, L. K., Hess, P. G., Kinnison, D. E., Tilmes, S., Vitt, F., Heald, C. L., Holland, E. A., Lauritzen, P. H., Neu, J., Orlando, J. J., Rasch, P., and Tyndall, G.: CAM-chem: description and evaluation of interactive atmospheric chemistry in CESM, Geosci. Model Dev. Discuss., 4, 2199-2278, doi:10.5194/gmdd-4-2199-2011, 2011. Bibtex EndNote Reference Manager XML
