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Full-Text Articles in Engineering
Impacts Of Future Climate Change And Effects Of Biogenic Emissions On Surface Ozone And Particulate Matter Concentrations In The United States, Y. F. Lam, Joshua Fu, S. Wu, L. J. Mickley
Impacts Of Future Climate Change And Effects Of Biogenic Emissions On Surface Ozone And Particulate Matter Concentrations In The United States, Y. F. Lam, Joshua Fu, S. Wu, L. J. Mickley
Joshua Fu
Simulations of present and future average regional ozone and PM2.5 concentrations over the United States were performed to investigate the potential impacts of global climate change and emissions on regional air quality using CMAQ. Various emissions and climate conditions with different biogenic emissions and domain resolutions were implemented to study the sensitivity of future air quality trends from the impacts of changing biogenic emissions. A comparison of GEOS-Chem and CMAQ was performed to investigate the effect of downscaling on the prediction of future air quality trends. For ozone, the impacts of global climate change are relatively smaller when compared …
Air Quality And Emissions In The Yangtze River Delta, China, L. Li, C. H. Chen, Joshua Fu, C. Huang, D. G. Streets, H. Y. Huang, G. F. Zhang, Y. J. Wang, C. J. Jang, H. L. Wang, Y. R. Chen, J. M. Fu
Air Quality And Emissions In The Yangtze River Delta, China, L. Li, C. H. Chen, Joshua Fu, C. Huang, D. G. Streets, H. Y. Huang, G. F. Zhang, Y. J. Wang, C. J. Jang, H. L. Wang, Y. R. Chen, J. M. Fu
Joshua Fu
Regional trans-boundary air pollution has become an important issue in the field of air pollution modeling. This paper presents the results of the implementation of the MM5-CMAQ modeling system in the Yangtze River Delta (YRD) for the months of January and July of 2004. The meteorological parameters are obtained by using the MM5 model. A new regional emission inventory with spatial and temporal allocations based on local statistical data has been developed to provide input emissions data to the MM5-CMAQ modeling system. The pollutant concentrations obtained from the MM5-CMAQ modeling system have been compared with observational data from the national …
A Regional Chemical Transport Modeling To Identify The Influences Of Biomass Burning During 2006 Base-Asia, Joshua Fu, N. C. Hsu, Y. Gao, K. Huang, C. Li, N.-H. Lin, S.-C. Tsay
A Regional Chemical Transport Modeling To Identify The Influences Of Biomass Burning During 2006 Base-Asia, Joshua Fu, N. C. Hsu, Y. Gao, K. Huang, C. Li, N.-H. Lin, S.-C. Tsay
Joshua Fu
To evaluate the impact of biomass burning from Southeast Asia to East Asia, this study conducted numerical simulations during NASA's 2006 Biomass-burning Aerosols in South-East Asia: Smoke Impact Assessment (BASE-ASIA). Two typical episode periods (27–28 March and 13–14 April) were examined. Two emission inventories, FLAMBE and GFED, were used in the simulations. The influences during two episodes in the source region (Southeast Asia) contributed to CO, O3 and PM2.5 concentrations as high as 400 ppbv, 20 ppbv and 80 μg/m3, respectively. The perturbations with and without biomass burning of the above three species were in the …
A Novel Downscaling Technique For The Linkage Of Global And Regional Air Quality Modeling, Y. F. Lam, Joshua Fu
A Novel Downscaling Technique For The Linkage Of Global And Regional Air Quality Modeling, Y. F. Lam, Joshua Fu
Joshua Fu
Recently, downscaling global atmospheric model outputs (GCTM) for the USEPA Community Multiscale Air Quality (CMAQ) Initial (IC) and Boundary Conditions (BC) have become practical because of the rapid growth of computational technologies that allow global simulations to be completed within a reasonable time. The traditional method of generating IC/BC by profile data has lost its advocates due to the weakness of the limited horizontal and vertical variations found on the gridded boundary layers. Theoretically, high quality GCTM IC/BC should yield a better result in CMAQ. Unfortunately, several researchers have found that the outputs from GCTM IC/BC are not necessarily better …