Urban Development in Air Pollution Basins: An Appeal to the Planners for Help

Abstract

The air basin between the Mississippi River and the bluff in Illinois is of particular interest for this report. The autumnal temperature profiles were measured by a wiresonde. Each day through September and October had an inversion at dawn and/or dusk. During the entire three months, inversions 5° or more occurred at dawn 64% of the mornings, those 10° or more occurred 45% of the mornings; and those 1 5°o ccurred 23% of the mornings. Under intense inversions, the topography holds cool air in the basin like water in a saucer, and currents within this 200-ft air layer comprise a quasi-closed circulation system. A frequent pattern of air circulation involves a northwestward surface drift in the basin, with a southwest wind aloft and an updraft over St. Louis. This forms a horizontal semi-vortex along the river, concentrating the heavier particulates near East St. Louis and Granite City. Multiple evidence showed this pattern to exist one morning among four. Business interests would use the basin for industrial expansion, but air resource planners prefer to keep new air pollution sources out of this low land.

Correlation Analysis between Land Use/Cover Change and Air Pollutants—A Case Study in Wuyishan City

“…This finding was consistent with Huang et al (2018), which examined the effects of urban land expansion on air pollution in China, and found that urban land expansion influenced air pollution, with a significant relationship to the concentration of air pollutants [55]. Zhang et al (2015) found that visibility was significantly affected by the variation of PMs concentrations [56], and many studies have also shown that forests can effectively reduce the concentration of PMs [15,29]. Therefore, the increase in the forest can effectively improve visibility, which was consistent with the results of this research.…”

“…On the contrary, land-use types, such as built-up land, can be associated with higher levels emissions of air pollution [3,14]. The idea that built-up land types have a significant impact on air quality has been proposed in the past [15,16], and has since been supported by several studies [17,18]. Zahari et al (2016) explored the relationship between built-up land and air quality in Malaysia, and the results showed that air quality can be manipulated or reduced through proper land use planning [19].…”

The Design of an Urban Roadside Automatic Sprinkling System: Mitigation of PM2.5–10 in Ambient Air in Megacities

“…The other condition that aggravates the PM pollution is the existence of pollution-intensive factories near the city fringe, which was ever a symbol of modern industrial metropolitan megacities without zoning laws introduced in some countries. Another important factor that expedites PM buildup and worsens pollution level is the basin location of many cities such as Los Angeles, Chengdu, Urumqi, Mexico City, and Sydney, where polluted air is trapped beneath and within temperature inversion layers because of their particular geographic features [22][23][24][25].…”