GISS GCM ModelE
The current incarnation of the GISS series of coupled atmosphere-ocean models is now available. Called ModelE, it provides the ability to simulate many different configurations of Earth System Models - including interactive atmospheric chemsitry, aerosols, carbon cycle and other tracers, as well as the standard atmosphere, ocean, sea ice and land surface components.
The model version being used for the CMIP5 simulations will soon be available in a complete package, though there are nightly snapshots of the current code repository available (including the frozen 'AR5_branch'), but users should be aware that these snapshots are presented 'as is' and are not necessarily suitable for publication-quality experiments.
Please let us know if you intend to use this code by subscribing to our mailing list. We will then keep you (very occasionally) informed about code patches and possible improvements to the configuration.
Documentation is included in the distribution (under directory doc/), and is included below for reference. System requirements and configuration of the distribution for any new system is discussed in detail.
GISS GCM Documentation Index
General Documentation
Model documentation in the literature is usually by component, with only occasional general papers on the whole system. The most recent general paper (including the ModelE AR4 specification and results from three standard configurations), is given in the following journal article:
- Schmidt, G.A., R. Ruedy, J.E. Hansen, I. Aleinov, N. Bell, M. Bauer, S. Bauer, B. Cairns, V. Canuto, Y. Cheng, A. Del Genio, G. Faluvegi, A.D. Friend, T.M. Hall, Y. Hu, M. Kelley, N.Y. Kiang, D. Koch, A.A. Lacis, J. Lerner, K.K. Lo, R.L. Miller, L. Nazarenko, V. Oinas, Ja. Perlwitz, Ju. Perlwitz, D. Rind, A. Romanou, G.L. Russell, Mki. Sato, D.T. Shindell, P.H. Stone, S. Sun, N. Tausnev, D. Thresher, and M.-S. Yao 2006. Present day atmospheric simulations using GISS ModelE: Comparison to in-situ, satellite and reanalysis data. J. Climate 19, 153-192.
Other articles on ModelE development include:
- Aleinov, I., and G.A. Schmidt 2006. Water isotopes in the GISS ModelE land surface scheme. Global Planet. Change 51, 108-120, doi:10.1016/j.gloplacha.2005.12.010.
- Kim, D., A. Del Genio, and M.-S. Yao, 2011. Moist Convection scheme in Model E2, Technical note. (pdf)
- Koch, D., G.A. Schmidt, and C.V. Field 2006. Sulfur, sea salt and radionuclide aerosols in GISS ModelE. J. Geophys. Res. 111, D06206, doi:10.1029/2004JD005550.
- Miller, R.L., R.V. Cakmur, Ja. Perlwitz, I.V. Geogdzhayev, P. Ginoux, K.E. Kohfeld, D. Koch, C. Prigent, R. Ruedy, G.A. Schmidt, and I. Tegen 2006. Mineral dust aerosols in the NASA Goddard Institute for Space Sciences ModelE atmospheric general circulation model. J. Geophys. Res. 111, D06208, doi:10.1029/2005JD005796.
- Shindell, D.T., G. Faluvegi, N. Unger, E. Aguilar, G.A. Schmidt, D.M. Koch, S.E. Bauer, and R.L. Miller, 2006: Simulations of preindustrial, present-day, and 2100 conditions in the NASA GISS composition and climate model G-PUCCINI. Atmos. Chem. Phys., 6, 4427-4459, doi:10.5194/acp-6-4427-2006.
Other available documentation includes:
- ModelE Reference Manual (AR4 version)
- HOW-TO document for the GCM (AR4 version)
- Options for running the GISS GCM (AR4 version)
More documentation is available within the distribution. Please let us know if any of the information in these files is out-of-date or otherwise incomplete.
F90 Code Viewer
The source code corresponding to the basic configuration of ModelE (AR5 version) will be available to be seen in it's entirety using the f90t0html software package (not yet done). This will allow you to jump around the code in a very intuitive graphical interface. The AR4 version is still available. Feel free to notify us of any errors you might find!
Source Code Repository
View source code in the repository (access limited to the nasa.gov domain) for latest updates, etc. This link allows you to view all the source files currently in the central Git repository together with their older versions. You can also make comparisons between different versions of the same file.
CMIP5 Model Configuration and Description
The description of configurations for the GISS contributions to the CMIP5 archive can be found here.
Initial and boundary condition files for these configurations (and many others) can be downloaded from the NCCS portal.
Forcings, experimental setups, and preliminary results will be forthcoming.
CMIP3 Model Configuration and Description
GISS submitted a number of different configurations to the IPCC AR4 model data repository at PCMDI (CMIP3). Information about the configurations and about updates and known issues are provided on the ModelE AR4 simulations page.
The frozen version of the ModelE code used for CMIP3 simulations and the controls for model description papers is denoted as ModelE1 (internal version number 3.0, dated Feb. 1, 2004). This code can be freely downloaded (as a 1.2 MB gzip-ed tar file) from modelE1.tar.gz.
Boundary and initial conditions for the AR4 version can be downloaded from fixed.tar.gz (191 MB). This is a large amount of data due to things like transient 3-D aerosol concentrations etc. A wider selection of input data (encompassing many different configurations, but mainly for a more up-to-date codebase are available here. There are more variants of this data available internally, so if you do not find the configuration you'd like, let us know and we may be able to help you.
If you require any further details on these configurations, please read the submitted papers, or contact us as described below.
Other ModelE Simulations
The results of various ModelE simulations conducted by GISS scientists may be found in the Datasets section of the GISS website.
Contacts
Please address all inquiries about the ModelE code to:
Dr. Gavin Schmidt
NASA Goddard Institute for Space Studies
2880 Broadway, New York, NY 10025 USA
gavin.a.schmidt@nasa.gov
