[1] It is desirable for local air quality agencies to accurately forecast tropospheric PM2.5 concentrations to alert the sensitive population of the onset, severity, and duration of unhealthy air and to encourage the public and industry to reduce emissions-producing activities. Since elevated particulate matter concentrations are encountered throughout the year, the accurate forecast of the day...

Daily and seasonal fluctuations in mortality have been positively and significantly associated with ambient concentrations of atmospheric pollution and meteorological variables such as temperature and barometric pressure. However, much less is known about the health risk from atmospheric pollutants in the context of frequently occurring weather patterns. The objective of this study is to assess...

“A Bayesian kriged Kalman model for short-term forecasting of air pollution levels” (2005) Sujit K. Sahu and Kanti V. Mardia http://www.blackwell-synergy.com/links/doi/10.1111/j.14679876.2005.00480.x/pdf?cookieSet=1 Shor t-term forecasts of air pollution levels in big cities are now repor ted in newspapers and other media outlets. Studies indicate that even shor t-term exposure to high levels o...

Over the past decades, China has been facing severe airborne pollution associated with atmospheric fine particulate matter (PM2.5). Much attention has been paid to the physical transport of PM2.5 emissions. However, the embodied emissions, namely the emissions transferred through economic activities, have seldom been investigated. In this paper, embodied emission of PM2.5 from each sector of Be...

The US Environmental Protection Agency’s (EPA) Community Multiscale Air Quality (CMAQ) modeling system version 4.7 is further developed to enhance its capability in simulating the photochemical cycles in the presence of dust particles. The new model treatments implemented in CMAQ v4.7 in this work include two online dust emission schemes (i.e., the Zender and Westphal schemes), nine dust-relate...

Particulate matter (PM) is released in varying quantities from mobile sources depending on the type of fossil fuel used combustion. According to USEPA, PM exposure could cause a variety problems such as premature deaths, nonfatal heart attacks, irregular heartbeat, asthma, reduced lung function, and respiratory issues. Therefore, it necessary predict downwind concentrations near highways protec...

The representations of cloud processing of gases and aerosols in some of the current state-of-the-art regional air quality models in North America and Europe are reviewed. Key processes reviewed include aerosol activation (or nucleation scavenging of aerosols), aqueous-phase chemistry, and wet deposition/removal of atmospheric tracers. It was found that models vary considerably in the parameter...

High ambient concentrations of air pollutants, such as particulate matter (PM10, PM2.5), nitrogen oxides (NOx) or ground-level ozone, occur in densely populated areas and thus have the potential for serious adverse human health effects. While statutory requirements for air quality monitoring due to national or European legislation defines the need for the operation of monitoring stations in par...