An interval programming optimization model was formulated to develop effective and feasible regional economic structure adjustment plan using Tangshan Municipality in China as a case study. The optimization model was coupled with a WRF-CAMx-PSAT air quality simulation system through the estimated industrial emission sensitivity coefficients and equivalent coefficients for PM2.5 concentrations. ...

A Comprehensive Air-Quality Model with Extensions (CAMx) version 6.10 simulation was assessed through comparison with data acquired during NASA's 2011 DISCOVER-AQ Maryland field campaign. Comparisons for the baseline simulation (CB05 chemistry, EPA 2011 National Emissions Inventory) show a model overestimate of NOy by +86.2% and an underestimate of HCHO by -28.3%. We present a new model framewo...

Based on the comprehensive air quality model with extensions (CAMx), quantitative simulation was conducted transport impact of PM2.5 between Zhongyuan Urban Agglomeration and surrounding cities in 2017, contribution 5 major emission sectors to urban concentrations, namely sector power, industry, household, transportation agriculture. A two-dimensional cross matrix established for 18 (hereafter ...

Emission inventories of elemental carbon (EC) and organic carbon (OC) contain large uncertainties both in their spatial and temporal distributions for different source types. An inverse model was used to evaluate EC and OC emissions based on 1 year of hourly measurements from the St. Louis–Midwest supersite. The input to the model consisted of continuous measurements of EC and OC obtained for 2...

In this study the exposure levels from Quercus pollen in greater area of Thessaloniki are estimated. The estimation is implemented with a modeling system, comprising meteorological model WRF, Natural Emissions Model (NEMO) for calculation emissions and chemistry-transport CAMx advection deposition particles. period 2016 highest potential selected, based on available measurements interest. syste...

Hot and dry conditions in summer 2003 led to ozone levels that substantially exceeded the Swiss ambient air quality standard. We investigated how emissions and ozone levels would have changed in this period if the maximum speed limit on Swiss motorways were decreased from 120 to 80 km h . The air quality model package MM5/CAMx was applied to two nested domains, both including Switzerland. Anthr...

This study investigates the improvement of ozone (O3) simulations in the Mexico City basin using a threedimensional variational (3DVAR) data assimilation system in meteorological simulations during the MCMA-2003 field measurement campaign. Meteorological simulations from the NCAR/Penn State mesoscale model (MM5) are used to drive photochemical simulations with the Comprehensive Air Quality Mode...