Air Pollution News Bites: 08-02-07

- A recent study estimates that demand for air pollution control products in China will increase by 18 percent each year through 2010. The increase is attributed to the Chinese government’s plan to increase the purchase of air pollution control technology and new legislation concerning strict environmental protection regulations. Products in demand by China include: electrostatic precipitators, baghouse systems, particulate filters, and catalysts.

- A new analysis studying atmospheric “brown clouds” hovering over Asia, have concluded that the buildup of greenhouse gases mainly due to the burning of fossil fuels, is a major contributor to the melting of tropical glaciers such as those found in the Himalayans. Researchers found that combining the heating effect of greenhouse gases and the elements found in brown clouds, such as soot, heightens the effect of global warming.

"The conventional thinking is that brown clouds have masked as much as 50 percent of global warming by greenhouse gases through so-called global dimming," said atmospheric chemist V. Ramanathan. "While this is true globally, this study reveals that over southern and eastern Asia, the soot particles in the brown clouds are in fact amplifying the atmospheric warming trend caused by greenhouse gases by as much as 50 percent."

He went on to state, "It is likely that in curbing greenhouse gases we can tackle the twin challenges of climate change and brown clouds, and in doing so, reap wider benefits--from reduced air pollution to improved agricultural yields."

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MarketWire
National Science Foundation

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