CESM Chemistry Climate Working Group Development Activities

Development Priorities for the Near Future and Release Information:

Topics of Development and Research

  • Understand chemistry differences between CAM4/BAM and CAM5/MAM
  • Bring ammonium nitrate in MAM (MAM3 or MAM4)
  • Integrate diagnostics from AeroCOM into released version
  • Start testing online photolysis (SciDAC proposal)

ChemClim Development Plan (from Breckenridge meeting 2012)

    Top Priority
  • Update to MEGAN/include maps when possible (in the release version)
  • Improvements to the dry deposition (Thanks to Maria Val Martin!)
  • Coupling chemistry with MAM and CAM5 physics (in the release version)
  • SE/FV dynamical core comparison: on-going tracer tests based on SD configuration kPP mechanism Box Model or SCAM w/ chemistry
    • Medium Priority
  • Update SOA mechanism: Colette Heald’s SOA in the release version (additional work by K. Barsanti)
  • Implementation of FAST-J photolysis rate computation (DOE funding: M. Prather/P. Cameron-Smith)
  • Conversion of preprocessor to KPP?
  • Vertical resolution and model top?
  • WACCM lite?
    • Low Priority
  • Coarse resolution? FV
    • Diagnostics:
  • Tools for model result differencing Benchmark numbers: methyl chloroform lifetime, ozone budget terms, methane lifetime, mass-weighted tropospheric OH, lightning NOx, sf(co/nox/isoprene)

CESM Project

The Community Earth System Model (CESM) is a fully-coupled, global climate model that provides state-of-the-art computer simulations of the Earth's past, present, and future climate states.

CESM is sponsored by the National Science Foundation (NSF) and the U.S. Department of Energy (DOE). Administration of the CESM is maintained by the Climate and Global Dynamics Division (CGD) at the National Center for Atmospheric Research (NCAR).

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