The UMD Earth system model 

The UMD model is a flexible Earth system model of intermediate complexity, that consists of the atmosphere, ocean, land, dynamic vegetation,
terrestrial and ocean carbon cycle components. These components can be relatively easily switched on and off, as you will see in the names
of the types of coupling one can do.

1. Model components
    Atmosphere: QTCMg (Global version of the Quasi-equilibrium Tropical Circulation Model: Neelin and Zeng, 2000; Zeng et al. 2000; Zeng et al., 2004)
    Ocean:  Slab mix-layer ocean
    Land:    SLand (Zeng et al., 2000)
    Dynamic vegetation and terrestrial carbon:  VEGAS
    Ocean carbon: 3 box model
    The model is currently not in the public domain, but we will be able to provide it in a collaborative mode.
    Please contact us!

2. For a brief guide on downloading/using the model, click Manual

3. Technical Issues

    Working platforms: We tested on several platforms.  But, some problems are expected if proting on different platform and complier.
                                          Please contact us for technical issues. 

    Resolution for the fully coupled model is limited by the atmospheric model
  1. xdef      64 linear      0.000     5.625
  2. ydef      48 linear  -88.125      3.75
  3. Monthly (or any other desired) output
Note: the offline LV can be run at any resolution, typically at 1x1deg

5. References

Model description :  Zeng, N., H. Qian, E. Munoz, and R. Iacono (2004), How strong is carbon cycle-
climate feedback under global warming? Geophys. Res. Lett., 31 L20203, doi:10.10292004GL020904.
PDF file of the paper

Land-Vegetation feedback :  Zeng, N., J. D. Neelin, K.-M. Lau, and C. J. Tucker, 1999: Enhancement of
interdecadal climate variability in the Sahel by vegetation interaction. Science, 286, 1537-1540.
Abstract, PDF file of the paper

More references here

Contact information (More
products from the Earth System Modeling group at UMD)
Prof. Ning Zeng (,
Dr. Jin-Ho Yoon (,