ACE-Asia Planning Meeting

Kunming, P. R. China
11-13 November1999

Report for the Modeling Working group
Compiled by Greg Carmichael

The working group consisted of ~ 12 persons. The discussion focused on identification of what various modeling groups planned to do in regards to ACE-Asia, and on common interests/concerns of the modeling community. The following major points were made:

(1) There are a wide variety of modeling activities planned in support of ACE-Asia. These range from forecasts done operationally by Meteorological Services in the region (i.g., S. Korea); to operational support of the field program; to studies aimed to support specific measurement sites; to a variety of meso/regional scale models focused on processes; to global models concerned with chemistry/climate interactions. These models all have event-based capabilities, and studies are aimed at testing various processes overall model evaluations, interruption of observed data; and evaluation of the impact of Asia aerosol on chemistry/radiation and climate. Discussion also included the need/interest in providing real-time 3d dust and chemistry forecast in support of the intensive experiments. It was strongly supported that we should try to see that this capability is in place. Carmichael and Uno will discuss one possibility; i.e., providing RAMS analysis during the intensives.

(2) The general issue of emission inventories in support of ACE-Asia was discussed. It was decided to establish a ACE-Asia Emissions Website (G. Carmichael will do) where we will place available emissions inventories as well as supporting data (GIS info, energy, etc.) as well as a brief discussion of methodologies being used for on-line production estimates of wind blown soils and sea salt. The group also expressed the need for further work on BC/OC emission factors, soil chemistry, etc. This will require additional ground based work done in collaboration with Chinese scientists. The identification and use of emission markers to mark the emission source categories; mineral, coal, biofuels, field combustion's, oceanic, etc. was discussed and the use of these markers in modeling studies was strongly encouraged.

(3) The use of ongoing and past modeling studies in support of the design of ACE-Asia was also discussed. There are various modeling studies ongoing that are focused on springtime events in east Asia. It was decided to also establish a website where the results from these studies will be listed along with sample results. This will help facilitate a clearer picture of what groups are doing, and the results should prove valuable to the design of the observational elements of Ace Asia. (G. Carmichael will follow up and start this process).

(4) The group also discussed the utility and interest in exchanging process modules for use in modeling analysis. Examples include secondary organic aerosol production, source production rates, radiation/photolysis. The group plans to encourage this and details will be developed.

(5) The group also identified several key issues. These include: