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Progress on Nucleation and Coagulation Models in GMI Aerosol Activities

This publication provides updates on the progress made in nucleation and coagulation models in GMI aerosol activities. It discusses the addition of aerosols to GMI, successful transfer of code to Goddard, simulations with all met fields, and the participation in the AEROCOM aerosol model intercomparison. Outline of AEROCOM procedures and upcoming workshop details are also included.

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Progress on Nucleation and Coagulation Models in GMI Aerosol Activities

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  1. GMI Aerosol Activities Joyce Penner

  2. Progress on nucleation and coagulation models • UMaer model description publication has been drafted, editing currently underway • Box model intercomparison publication has been drafted, waiting on my editing • 2-D intercomparison has been initiated—UMaer added to AER 2D model, debugging underway

  3. Progress on adding aerosols to GMI • Successful addition of sulfate aerosol (and other aerosol types) to all met-field versions of GMI by LLNL • Successful transfer of code go Goddard • Goddard has run the DAO version of the code through 1 year – results seem reasonable in comparison to U. of Mich. IMPACT results • Awaiting simulations with all met fields to analyze

  4. AEROCOM aerosol model intercomparison • We attended the 1st organizational meeting in July and showed IMPACT results, and discussed the capabilities that GMI will bring to the table • Provided IMPACT results for the first part of the intercomparison • Helped organize a session at the Fall AGU meeting • Will hold a press conference discussing early results

  5. Outline of AEROCOM procedures • Phase 1 results submitted in June 2003: • Each model to also infer aerosol optical depth (no control on humidity treatment, etc.) • Each model to use whatever sources they have • Phase 2 • Sources specified; have not yet finalized biomass burning sources • Results submitted by end of Dec. • Workshop in Mar 3 – 5, 2004

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