The prediction of ground level ozone for air quality monitoring and assessment is simulated through an integrated system of gridded models (meteorological, photochemical), where the atmosphere is represented with a three-dimensional grid that may include thousands of grid cells. The continuity equation solved by the Photochemical Air Quality Model (PAQM) reproduces the atmospheric processes (dy...

Under the Air Pollution Prevention and Control Action Plan (APPCAP) implemented, China has witnessed an air quality change during past five years, yet main influence factors remain relatively unexplored. Taking Beijing-Tianjin-Hebei (BTH) Yangtze River Delta (YRD) regions as typical cluster cities, Weather Research Forecasting (WRF) Comprehensive Quality Model with Extension (CAMx) were introdu...

In this study, we applied the MM5/CAMx model system over Switzerland for winter and summer periods in 2006. The focus is on the formation and transport of aerosols and the contribution of various sources to the aerosol formation both in winter and summer seasons. Our model system uses three nested domains with 27 km (Europe), 9 km (central Europe) and 3 km (Switzerland) resolutions. The concent...

Photochemistry in polluted atmospheres, particularly the formation of ozone (O3), depends not only on pollutant emissions, but also on meteorological conditions. In this study a 3-D chemical transport model CAMx was employed to investigate the O3 formation and its response to emissions reduction under three distinctively different meteorological conditions in the Mexico City Metropolitan Area d...

Results to date on an ongoing project to assess VOC reactivity effects in the Eastern United States using the CRC-NARSTO database representing the July-5, 1995 episode and the Carbon Bond mechanism are described. The Direct Decoupled Method (DDM) as implemented in the CAMx model was used to calculate the incremental ozone impacts of 8 Carbon Bond VOC species, CO and ethane, and various methods ...

An episodic simulation is conducted to characterize midday (12:00–17:00 CDT) ozone (O3) photochemical production and to investigate its sensitivity to emission changes of ozone precursors in the Mexico City Metropolitan Area (MCMA) during an “O3-South” meteorological episode using the Comprehensive Air Quality Model with extensions (CAMx). High Ox (O3+NO2) photochemical production rates of 10–8...

We use the CAMx (Comprehensive Air Quality Model with Extensions) chemical transport model (CTM) 4-km horizontal resolution over Korean Peninsula to investigate source contributions PM2.5 in Korea from domestic and upwind sources. modeled 2015 2016 account for meteorological variation emissions Clean Policy Supporting System (CAPSS), meteorology WRF (Weather, Research, Forecasting) model, regio...

Air quality in Europe continues to remain poor many areas, with regulation limits often exceeded by countries. The EU Life-IP PREPAIR Project, involving administrations and environmental protection agencies of eight regions three municipalities Northern Italy Slovenia, was designed support the implementation regional air plans Po Valley, one most critical areas terms pollution levels. In this s...