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Regional severe haze in northern China is characterized by exceedingly high concentrations of fine particulate matter and exhibits extensive temporal and spatial coverage, thus influencing air quality, human health and ecosystems. The causes of these severe haze events, however, are very complex and still debated.
A study led by An Zhisheng from the Institute of Earth Environment (IEE), Chinese Academy of Sciences, published online in PNAS on April 15, reviews and synthesizes recent advances in the causes and formation mechanisms of severe haze pollution in northern China.
Haze - Events - China - Effects - Interactions
"The severe haze events in northern China can be regarded as synergetic effects from the interactions between anthropogenic emissions and atmospheric processes," said An.
Researchers found that the seasonally enhanced emissions of pollutants from residential heating and efficient secondary aerosol formation and transformation could cause severe haze.
Conditions - Example - Air - Stability - Planetary
Unfavorable meteorological conditions, for example, enhanced air static stability and shallow planetary...
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