Beijing to experiment with artificial haze abatement

Beijing hazeDuring the Beijing Meteorological Modernization Work Conference (全市气象现代化工作会议) held on December 17, Lin Keqing, the vice mayor of Beijing, announced that the city of Beijing will carry out scientific experiments on artificial haze abatement.

Currently there are two ways to conduct haze abatement: artificial precipitation and artificial fog dispersal. Artificial precipitation could potentially be very effective, according to the experts interviewed by The Beijing Times, but the lack of any significant air flows on hazy days makes it very unlikely that the prerequisites of artificial precipitation will materialize. Thus a possible solution is to use a refrigerant such as liquid nitrogen to turn haze droplets into ice crystals and cause them to fall to the ground. As for artificial fog dispersal, an expert commented that this method has not yet become an operational procedure for the meteorological department, and can only be conducted on a small scale. No specific timeline for developing this technology was provided.

At the conference, Lin also reported that more than half of the national meteorological observatories have suffered various degrees of damage. The only national benchmark climate station in Beijing also play a limited role as the high-rise buildings located close to it seriously limit the operations of the station. Lin announced, however, that more than 200 automatic weather observatories will be built over the next year.

Links and sources
The Beijing News (新京报): 北京将试验“人工消减雾霾”
Image: Sina