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Full-Text Articles in Engineering
Projected Changes Of Extreme Weather Events In The Eastern United States Based On A High Resolution Climate Modeling System, Y Gao, J S. Fu, J B. Drake, Y Liu, J-F Lamarque
Projected Changes Of Extreme Weather Events In The Eastern United States Based On A High Resolution Climate Modeling System, Y Gao, J S. Fu, J B. Drake, Y Liu, J-F Lamarque
Faculty Publications and Other Works -- Civil & Environmental Engineering
This study is the first evaluation of dynamical downscaling using the Weather Research and Forecasting (WRF) Model on a 4 km × 4 km high resolution scale in the eastern US driven by the new Community Earth System Model version 1.0 (CESM v1.0). First we examined the global and regional climate model results, and corrected an inconsistency in skin temperature during the downscaling process by modifying the land/sea mask. In comparison with observations, WRF shows statistically significant improvement over CESM in reproducing extreme weather events, with improvement for heat wave frequency estimation as high as 98%. The fossil fuel intensive …
Dehalogenimonas Spp. Can Reductively Dehalogenate High Concentrations Of 1,2-Dichloroethane, 1,2-Dichloropropane, And 1,1,2-Trichloroethane, Andrew D. Maness, Kimberly S. Bowman, Jun Yan, Fred A. Rainey, William M. Moe
Dehalogenimonas Spp. Can Reductively Dehalogenate High Concentrations Of 1,2-Dichloroethane, 1,2-Dichloropropane, And 1,1,2-Trichloroethane, Andrew D. Maness, Kimberly S. Bowman, Jun Yan, Fred A. Rainey, William M. Moe
Faculty Publications and Other Works -- Civil & Environmental Engineering
The contaminant concentrations over which type strains of the species Dehalogenimonas alkenigignens and Dehalogenimonas lykanthroporepellens were able to reductively dechlorinate 1,2-dichloroethane (1,2-DCA), 1,2-dichloropropane (1,2-DCP), and 1,1,2-trichloroethane (1,1,2-TCA) were evaluated. Although initially isolated from an environment with much lower halogenated solvent concentrations, D. alkenigignens IP3-3T was found to reductively dehalogenate chlorinated alkanes at concentrations comparable to D. lykanthroporepellens BL-DC-9T. Both species dechlorinated 1,2-DCA, 1,2-DCP, and 1,1,2-TCA present at initial concentrations at least as high as 8.7, 4.0, and 3.5 mM, respectively. The ability of Dehalogenimonas spp. to carry out anaerobic reductive dechlorination even in the presence of …
Impact Of Anthropogenic Emission On Air Quality Over A Megacity – Revealed From An Intensive Atmospheric Campaign During The Chinese Spring Festival, K Huang, G Zhuang, Y Lin, Q Wang, Joshua S. Fu, R Zhang, J Li, C Deng, Q Fu
Impact Of Anthropogenic Emission On Air Quality Over A Megacity – Revealed From An Intensive Atmospheric Campaign During The Chinese Spring Festival, K Huang, G Zhuang, Y Lin, Q Wang, Joshua S. Fu, R Zhang, J Li, C Deng, Q Fu
Faculty Publications and Other Works -- Civil & Environmental Engineering
The Chinese Spring Festival is one of the most important traditional festivals in China. The peak transport in the Spring Festival season (spring travel rush) provides a unique opportunity for investigating the impact of human activity on air quality in the Chinese megacities. Emission sources are varied and fluctuate greatly before, during and after the Festival. Increased vehicular emissions during the "spring travel rush" before the 2009 Festival resulted in high level pollutants of NOx (270 μg m−3), CO (2572 μg m−3), black carbon (BC) (8.5 μg m−3) and extremely low single scattering …
Typical Types And Formation Mechanisms Of Haze In An Eastern Asia Megacity, Shanghai, K Huang, G Zhuang, Joshua S. Fu, Q Wang, T Liu, R Zhang, Y Jiang, C Deng, Q Fu, N C. Hsu, B Cao
Typical Types And Formation Mechanisms Of Haze In An Eastern Asia Megacity, Shanghai, K Huang, G Zhuang, Joshua S. Fu, Q Wang, T Liu, R Zhang, Y Jiang, C Deng, Q Fu, N C. Hsu, B Cao
Faculty Publications and Other Works -- Civil & Environmental Engineering
An intensive aerosol and gases campaign was performed at Shanghai in the Yangtze River Delta region over Eastern China from late March to early June 2009. This study provided a complementary picture of typical haze types and the formation mechanisms in megacities over China by using a synergy of ground-based monitoring, satellite and lidar observations. During the whole study period, several extreme low visibility periods were observed with distinct characteristics, and three typical haze types were identified, i.e. secondary inorganic pollution, dust, and biomass burning. Sulfate, nitrate and ammonium accounted for a major part of PM2.5 mass during the …