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Contents
Contents
Index
CCSM3.0 User's Guide
Mariana Vertenstein, Tony Craig, Tom Henderson, Sylvia Murphy, George R Carr Jr and Nancy Norton
www.cesm.ucar.edu
June 25, 2004
Contents
List of Tables
1 Introduction
1.1 CCSM overview
1.2 CCSM model components
1.2.1 Active atmospheric component
1.2.2 Active land component
1.2.3 Active ocean component
1.2.4 Active sea-ice component
1.3 Paleo-climate related issues
1.3.1 Component Sets
1.3.2 Component Resolutions
1.4 Upgrades from previous releases
1.5 Climate validations
2 Requirements
2.1 Software Requirements
2.2 Supported Machines
2.3 Memory, disk space and simulation time limitations
2.4 NCAR specific considerations
2.4.1 Roy and the firewall
2.4.2 Fileserver
2.4.3
<
B>sftp,scp,ssh
3 Obtaining code, scripts and input data
3.1 Downloading the model
3.2 Untarring the source code and scripts
3.3 Untarring the input data
3.4 Testing the downloaded source code and data files
4 Creating cases (preparing model runs)
4.1 Scripts usage overview
4.2
create_newcase
4.3 Resolved scripts
4.4
configure
4.4.1
configure -mach
4.4.2
configure -cleanmach and configure -cleanall
4.4.3
configure -addmach
4.5 Environment variables
4.6 Environment variables in
env_conf
4.7 Environment variables in
env_run
4.8 Environment variables in
env_mach.$MACH
4.8.1
env_mach.$MACH
tasks/threads
4.8.2
env_mach.$MACH
general machine specific settings
4.8.3
env_mach.$MACH
input data prestaging
4.8.4
env_mach.$MACH
output data short-term archiving environment variables
4.8.5
env_mach.$MACH
output data long-term archiving
4.9 Scripts design for developers
4.10 General script tools
4.11 Script generation tools
4.11.1 Script validation tools
4.11.2 Input/output data movement
5 Building, Running and Input/Output Data
5.1 Model input
5.2 Building CCSM3
5.2.1 Building summary
5.2.2
Gmake
details
5.2.3 User modified source code
5.3 Running CCSM3
5.4 Initialization types
5.4.1 Startup runs
5.4.2 Hybrid runs
5.4.3 Branch runs
5.4.4 Prestaging input datasets for hybrid or branch runs
5.5 Model output
5.5.1 Short-term archiving
5.5.2 Long-term archiving
6 CCSM3 Use Cases
6.1 Setting up a startup run
6.2 Setting up a branch run
6.3 Setting up a hybrid run
6.4 Setting up a production run
6.5 Monitoring a production run
6.6 Diagnosing a production run failure
6.7 Restarting a production run
6.8 Handing off a production run to another person
6.9 Generating IPCC configuration runs
6.10 Adding a new machine to
$CCSMROOT/
6.11 Modifying CCSM source code
6.12 Modifying input datasets
7 Testing
7.1 Features to be tested
7.2 Testing script
7.2.1
create_test
7.2.2 Using
create_test
7.2.3 Available tests
7.3 Common
create_test
use cases
7.3.1 Validation of an Installation
7.3.2 Verification of Source Code Changes
8 Performance
8.1 Compiler Optimization
8.2 Model parallelization types
8.3 Load Balancing CCSM3
9 Troubleshooting (Log Files, Aborts and Errors)
9.1 Error messages and log files
9.2 General Issues
9.3 Model time coordination
9.4 POP ocean model non-convergence
9.5 CSIM model failures
9.6 CAM Courant limit warning messages
9.7 CAM model stops due to non-convergence
9.8 T31 instability onset
10 Post Processing
10.1 Software Overview
10.1.1 The netCDF Operators (NCO)
10.1.2 The NCAR Command Language (NCL)
10.1.3 Component Model Processing Suite (CMPS)
10.1.4 Diagnostic Packages
10.1.5 Commercial Tools
10.2 Post Processing Strategies
10.2.1 Selected Variable File Concatenation
10.2.2 Creating Climatologies
10.2.3 Atmospheric Hybrid to Pressure Level Interpolation
10.2.4 POP remapping
11 Glossary
Index
About this document ...
csm@ucar.edu
