CAM6.3 User’s Guide

• 1. Introduction
  • 1.1. What’s new in the CAM6.3 release?
• 2. Getting Help
  • 2.1. The CAM Web Page
  • 2.2. The CESM Bulletin Board
  • 2.3. Reporting bugs
• 3. Building and Running the atmospheric model within CESM
  • 3.1. Modifying CAM’s compiled codebase (configuration)
  • 3.2. Modifying namelist settings in CAM run
• 4. Atmospheric configurations (compsets)
  • 4.1. CAM scientifically supported compsets
  • 4.2. CAM developmental compsets
  • 4.3. CAM Simple Models
    • 4.3.1. CAM aquaplanet (QP and QS compsets)
      • 4.3.1.1. Example 1: Default Aquaplanet with prescribed SST
      • 4.3.1.2. Example 2: Default Aquaplanet with Slab-Ocean Model
      • 4.3.1.3. Example 3: Aquaplanet with alternate prescribed SST
      • 4.3.1.4. Example 4: Aquaplanet with user-specified SST dataset
    • 4.3.2. CAM Parallel Offline Radiation Tool (PORT - P compsets)
      • 4.3.2.1. PORT Compsets
      • 4.3.2.2. Example: Using PORT to study flux differences due to 2 x CO2
    • 4.3.3. CAM single column (FSCAM compset)
      • 4.3.3.1. SCAM Configuration Options
      • 4.3.3.2. Example: Setting up a SCAM run
      • 4.3.3.3. Example: Efficient way to cycle over several SCAM IOP locations
      • 4.3.3.4. Example: Setting up User Defined IOP for SCAM
  • 4.4. Other CAM compsets
    • 4.4.1. Super-parameterized CAM (SPCAM)
  • 4.5. CAM-chem tested compsets
  • 4.6. WACCM compsets
    • 4.6.1. Scientifically supported WACCM atmosphere compsets
    • 4.6.2. Tested WACCM atmosphere compsets
  • 4.7. WACCM-X compsets
• 5. User Defined Variable Resolution Configurations
  • 5.1. Spectral Element Dycore
• 6. Customizing CAM runs
  • 6.1. Changing CAM configurations
    • 6.1.1. Changing the physics
  • 6.2. Changing CAM namelist options
    • 6.2.1. Modifying Namelist settings: Detailed Example – Using CMIP5 emissions
  • 6.3. User-Defined Compsets
  • 6.4. Changing Specified Dynamics Compsets
• 7. Input Datasets
  • 7.1. Emissions
    • 7.1.1. List of available emissions datasets
    • 7.1.2. List of species with emissions (CAM)
    • 7.1.3. List of species with dry and wet deposition (CAM)
    • 7.1.4. List of species with emissions (CAMchem/WACCM)
    • 7.1.5. List of species with dry and wet deposition (CAMChem/WACCM)
    • 7.1.6. List of species with biogenic emissions (CAMChem/WACCM)
    • 7.1.7. WACCM-X emissions
  • 7.2. Lower boundary data sets
  • 7.3. Soil erodibility files
  • 7.4. Topography files
  • 7.5. Meteorological data sets
  • 7.6. Solar input files
    • 7.6.1. Solar irradiance
    • 7.6.2. WACCM solar inputs
    • 7.6.3. WACCM-X solar inputs
  • 7.7. Additional inputs for WACCM and WACCM-X
    • 7.7.1. Geomagnetic coefficients
    • 7.7.2. Ion drag
    • 7.7.3. Electrons
    • 7.7.4. Upper boundary condition
• 8. Model Output:
  • 8.1. Model History Files
  • 8.2. Customizing output History Fields
  • 8.3. General Features of History Files
  • 8.4. Timestamps and time intervals
    • 8.4.1. Example: Timestamps for a year of monthly averages
  • 8.5. Multiple time samples in a single file
    • 8.5.1. Example: Timestamps for five daily averages
  • 8.6. Example: Default History Fields and Master Field Lists
• 9. Physics modifications via the namelist
  • 9.1. Radiative Constituents
    • 9.1.1. Default rad_climate for cam6 physics
  • 9.2. Example - Modify a radiatively active gas
  • 9.3. Diagnostic radiative forcing
  • 9.4. Example - Aerosol radiative forcing
  • 9.5. Example - Black carbon radiative forcing
  • 9.6. Nudging
    • 9.6.1. Target Data
    • 9.6.2. Implementation
    • 9.6.3. Output Values
    • 9.6.4. Namelist Values
    • 9.6.5. Windowing Examples
    • 9.6.6. EXAMPLE: Setting Up and Running A Nudging Experiment
• 10. Chemistry specific modifications
  • 10.1. Chemical mechanisms
  • 10.2. Modifications of the Chemical Mechanisms
  • 10.3. Adding emissions and lower boundary conditions
  • 10.4. Adding species and changing the mechanism
  • 10.5. Running with prognostic fire emissions
  • 10.6. Running with fixed land data
  • 10.7. Running with interactiv / prescribed biogenic emissions
• 11. Downloading CAM standalone
  • 11.1. Downloading the CAM standalone code
  • 11.2. Checkout out the externals
  • 11.3. Useful git commands
  • 11.4. Useful documentation about CAM development and git resources
• 12. Appendices
  • 12.1. The configure utility
    • 12.1.1. Arguments to configure
  • 12.2. The build-namelist utility
    • 12.2.1. Arguments to build namelist
    • 12.2.2. CAM Namelist variables
• 13. References