Title of Document: AIR POLLUTANT CONCENTRATIONS AND TRENDS OVER THE EASTERN U.S. AND CHINA: AIRCRAFT MEASUREMENTS AND NUMERICAL SIMULATIONS Hao He, Doctor of Philosophy, 2012 Directed By: Professor Russell R. Dickerson Department of Atmospheric and Oceanic Science In the last several decades, efforts have been made to mitigate air pollution all around the world. With surface observations showin...

In this paper, we assume that a professional pollutant treatment enterprise treats all of the pollutants emitted by multiple small and medium-sized enterprises (SMEs). In order to determine the treatment price, SMEs can bargain with the pollutant treatment enterprise individually, or through forming alliances. We propose a bargaining game model of centralized pollutant treatment to study how th...

A heavy air pollution event occurred in Chengdu between 7 May 2014 and 8 May 2014. The present study established tracer sources based on HJ-1 satellite data, micropulse light detection and ranging (LiDAR) remote sensing data, and backward trajectories simulated using the hybrid single-particle Lagrangian integrated trajectory (HYSPLIT) model. Additionally, the present study analyzed the diffusi...

the wide availability of data on air pollutant emissions, the knowledge already achieved on theset of chemical and photochemical reactions in the troposphere, the ability to access real time weatherconditions at the local scale that determine the transport and transformation of gases and aerosol, now make it possible to obtain credible and reliable predictions, retrospective analyses and/or fut...

A decision support system (DSS) integrated in a geographical information system (GIS) for the analysis and evaluation of different transport policies is presented. The objective of the tool is to assist transport administrators enhance the efficiency of the transportation supply while improving environmental and energy indicators. The DDS works on three levels. The first performs the transport ...

To improve the feasibility of soil-aquifer remediation using bioaugmentation, more efficient methods are needed to widely disperse pollutant-degrading bacteria in porous media. Under water-saturated conditions, bacteria readily adhere to soil particles, but under unsaturated conditions, bacteria preferentially accumulate at the air-water interface. Air sparging a saturated porous medium produce...

A generalization of the experience regional land management city Kemerovo was carried out, and environmental problems solved in this case were identified, among which main problem is road transport - air pollutant. The purpose study to develop a solution by methods management. object Kemerovo, its subject peculiarities their studies provide for development new solutions implementation based on ...

Generally, areas with more anthropogenic emissions are polluted. However, Yunnan Province, located in the southwest of China, has experienced serious aerosol pollution recent years despite overall low and high vegetation coverage. To explore spatio-temporal variability Yunnan, this study retrieved near-surface PM 2.5 10 from 2017 to 2020 using random forest method based on Himawari-8 AOD data, ...

A quantitative understanding of the transport of pollutants in groundwater is of great importance from the environmental perspective. Some environmental pollution scenarios involving groundwater contamination are very real. For example, one may encounter a situation where an underground storage tank is leaking hydrocarbons into an aquifer at a constant rate. Similarly, an overturned oil tanker ...

finding the most appropriate governing equation under different environmental conditions is the most important step for both designing sorption systems and pollutant transport modeling. in this study, the second order model based on the sorbent concentration is theoretically and experimentally investigated. a circular flume was used for the sorption of cadmium by zeolite to simulate the natural...