Summary
| Also known as
|
|
| Model type
|
Modular
|
| Model part of larger framework
|
|
| Note on status model
|
|
| Date note status model
|
|
paleoclimate,
Technical specs
| Supported platforms
|
Unix, Linux, Mac OS
|
| Other platform
|
|
| Programming language
|
Fortran77, Fortran90
|
| Other program language
|
|
| Code optimized
|
|
| Multiple processors implemented
|
|
| Nr of distributed processors
|
|
| Nr of shared processors
|
|
| Start year development
|
2008
|
| Does model development still take place?
|
Yes
|
| If above answer is no, provide end year model development
|
|
| Code development status
|
|
| When did you indicate the 'code development status'?
|
|
| Model availability
|
As code
|
Source code availability
(Or provide future intension)
|
Through web repository
|
| Source web address
|
http://www.cesm.ucar.edu/working_groups/WACCM/
|
| Source csdms web address
|
|
| Program license type
|
GPL v2
|
| Program license type other
|
|
| Memory requirements
|
1GB for input data
|
| Typical run time
|
1.5 days per model year on 8 processor mac
|
In/Output
| Describe input parameters
|
GCM initial conditions files (netcdf) files describe initial state of atmosphere up ~km 140
|
| Input format
|
|
| Other input format
|
NetCDF
|
| Describe output parameters
|
netcdf output files describing atmospheric state, chemistry, etc
|
| Output format
|
|
| Other output format
|
NetCDF
|
| Pre-processing software needed?
|
No
|
| Describe pre-processing software
|
|
| Post-processing software needed?
|
Yes
|
| Describe post-processing software
|
IDL igeov viewer (IDL procedure)
|
| Visualization software needed?
|
Yes
|
| If above answer is yes
|
IDL
|
| Other visualization software
|
|
Process
| Describe processes represented by the model
|
General circulation model of early Earth. Particular detail is paid to chemistry, RT, and haze microphysics
|
| Describe key physical parameters and equations
|
Equations focused on are the radiative transfer equations, and equations governing haze microphysics
|
| Describe length scale and resolution constraints
|
Currently, 4x5 degree, with 66 vertical levels up to 140 km. Resolution can be increased if neccessary
|
| Describe time scale and resolution constraints
|
The model takes about 4-6 model years to reach equilibrium. The modeled time period is from the Archean Earth (3.8 - 2.5 Ga)
|
| Describe any numerical limitations and issues
|
Dynamics, chemistry, RT, microphysical, and slab ocean model are all coupled, thus the model runs slowly.
|
Testing
| Describe available calibration data sets
|
Haze microphysics can be checked against Bardeen 2008 for initial accuracy.
|
| Upload calibration data sets if available:
|
|
| Describe available test data sets
|
I have numerous data sets produced by an 8 processor Mac and a local unix cluster to confirm the model is initialized correctly.
|
| Upload test data sets if available:
|
|
| Describe ideal data for testing
|
Cassini data describing Titan photochemical haze. Laboratory work constraining haze properties.
|
Other
| Do you have current or future plans for collaborating with other researchers?
|
Yes, I plan on collaborating with others in particular when it comes time to rework the model chemistry modules.
|
| Is there a manual available?
|
Yes
|
| Upload manual if available:
|
|
| Model website if any
|
CCSM
|
| Model forum / discussion board
|
|
| Comments
|
The Early earth haze microphysical code is working, incorporating fractal particle structures. Development is needed on linking microphysics to RT.
NOTICE: REGISTRATION IS NEEDED TO RECEIVE THE SOURCE CODE.
SEND THE OWNER A LETTER THAT YOU ARE INTERESTED IN THE SOURCE CODE.
http://www.cesm.ucar.edu/working_groups/WACCM/
|
Introduction
History
Papers
Issues
Help
Input Files
Output Files
Download
Source |
