HR: 1340h
AN: A23C-1475    [Abstracts]
TI: Ozone and PM 2.5 Verification in NAM-CMAQ Modeling System at NCEP
AU: * Tsidulko, M
EM: Marina.Tsidulko@noaa.gov
AF: SAIC(NOAA/NCEP/EMC), 5200 Auth Rd, Camp Springs, MD 20746, United States
AU: McQueen, J
EM: Jeff.Mcqueen@noaa.gov
AF: NOAA/NCEP/EMC, 5200 Auth Rd, Camp Springs, MD 20746, United States
AU: Lee, P
AF: SAIC(NOAA/NCEP/EMC), 5200 Auth Rd, Camp Springs, MD 20746, United States
AU: DiMego, G
AF: NOAA/NCEP/EMC, 5200 Auth Rd, Camp Springs, MD 20746, United States
AB: Verification of ozone predictions from NAM-CMAQ NCEP/EPA Air Quality Forecast System is presented. Daily 1- hour and 8-hours averages, as well as daily peak ozone forecasts are compared with AIRNOW observations. Two versions of the system: operational for East US and experimental for Continental US are compared. Impact of recent changes in both NAM and CMAQ models on air quality forecasts is estimated. Verification is done for summer 2007. Predictions for different sub-regions are evaluated and related to meteorological elements verification. Boundary layer heights evaluation with radiosonde and aircraft data is also presented. Aerosol forecasts from developmental version of the AQ system are verified with AIRNOW observations for several episodes in summer 2007.
DE: 0300 ATMOSPHERIC COMPOSITION AND STRUCTURE
DE: 0305 Aerosols and particles (0345, 4801, 4906)
DE: 0345 Pollution: urban and regional (0305, 0478, 4251)
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting