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.
- Intel
Complier on linux
- Fujitsu
Complier on linux
- Sun
Fortran 90 on Sun (Solaris)
- xlf
on IBM
- g95
on Cygwin/Windows XP
Resolution for the fully coupled model is limited by the atmospheric model
- xdef 64 linear
0.000
5.625
- ydef 48 linear -88.125
3.75
- 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 (zeng@atmos.umd.edu, http://www.atmos.umd.edu/~zeng)
Dr. Jin-Ho Yoon (yjinho@atmos.umd.edu, http://www.atmos.umd.edu/~yjinho)