25. Seigneur, C., “Current Status of Air Quality Models for Particulate Matter”, NARSTO

2000—Tropospheric Aerosols: Science and Decisions in an International Community, October

23-26, 2000, Queretaro, Mexico, 2000b.

• Based on a limited set of comparisons with limited temporal and spatial model studies.

• Statistics calculated for aggregated gross error (AGE) and aggregated normalized bias

(ANB). Note that the statistics for AGE and AGB were not obtained with the same

models nor the same data base. Thus, performance for the two metrics in the table are

not associated with each other.

PM2.5 : AGE ~ +30% - +50%, AGB ~ +10% (based on one study)

Sulfate : AGE ~ +30% - +50%, AGB ~ -20% - -30%

Nitrate : AGE ~ +20% - +70%, AGB ~ -15 - +50%

EC : AGE ~ +15% - +60%, AGB = none available

OC : AGE ~ -40% - +50%, AGB ~ 38% (based on one study)

 

United States Office of Air Quality Planning and Standards

Environmental Protection Air Quality Analysis Division April 2007

Agency Research Triangle Park, NC

 

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