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Contents
Contents
Community Sea Ice Model (CSIM) User's Guide
Version 4.0
Julie Schramm
May 13, 2002
Contents
1 Introduction
1.1 What is CSIM4?
1.1.1 Overview of CSIM4 within CCSM2
1.1.2 Overview of Running CSIM4 within CCSM2.0
1.1.2.1 What do I need to run CCSM2.0?
2 Obtaining the Source Code and Input Datasets
2.1 Downloading the Source Code and Input Data
3 Quick Start Guide
3.1 Graphical User Interface
3.2 Running the Fully Coupled (B) Configuration at NCAR
3.3 Running the Active Ice Only (D) Configuration at NCAR
3.4 Running the Ice Model with the latm5 Atmosphere (M Configuration)
3.5 Running the Prescribed Ice (F) Configuration at NCAR
3.6 Running CSIM4 Off Site
4 Using CSIM4
4.1 How to Build and Run CSIM4 within CCSM2.0
4.1.1 The Build Environment
4.1.1.1 CSIM4 Preprocessor Flags
4.1.1.2 CSIM4 Compiler Options
4.1.2 Creating and Running the Executable
4.1.3 Setup Scripts
4.1.3.1 Main Driver Script
4.1.3.2 Ice Setup Script
4.1.3.3 Data atm Setup Script
4.1.3.4 Data lnd Setup Script
4.1.3.5 Data ocn Setup Script
4.1.3.6 Coupler Setup Script
4.2 Multiple Resubmissions
4.3 Model Input Variables
4.3.1 Namelist Variables
4.3.1.1 Namelist Variables for Time Management
4.3.1.2 Namelist Variables for Writing Output
4.3.1.3 Namelist Variables for Model Physics
4.3.1.4 Namelist Variables for File Names
4.3.1.5 Namelist Variables for Prescribed Ice Model
4.3.1.6 Namelist Variables for Ocean Mixed Layer Model
4.3.2 Example Namelists
4.3.2.1 Example 1: Default Namelist Variables
4.4 Model Input Datasets
4.5 The Four Run Types
4.5.1 Startup Runs
4.5.1.1 Using Initial Conditions from within CSIM4
4.5.1.2 Using Initial Conditions from Input Data Files
4.5.2 Hybrid Runs
4.5.3 Continue Runs
4.5.4 Branch Runs
4.6 Modifying the Input Variables
4.6.1 Changing Grid Resolution
4.6.2 Changing the Number of Processors
4.6.3 Changing the Ice Model Timestep
4.6.4 Changing the Length of the Model Run
4.6.5 Changing the Number of Ice Thickness Categories
4.6.6 Using the Prescribed Ice Model
4.6.7 Using the Ocean Mixed Layer Model within CSIM4
4.7 Information Sent to and Received from Coupler
4.7.1 Effects of Packed Buffer on History File Data
4.8 Output Data
4.8.1 Stdout Output
4.8.2 Restart Files
4.8.2.1 Restart Pointer Files
4.8.3 History Files
4.8.3.1 Information on Averaged Fields
4.8.3.2 Changing Frequency and Averaging
4.8.3.3 Changing Content
4.8.3.4 Changing Directory Location
5 Trouble-shooting
5.1 Enabling the Debugger
Bibliography
About this document ...
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