HONG KONG — A time-lapse video of smog rolling into Beijing offers a jarring new perspective of the pollution that has been afflicting the Chinese capital in recent months.
Video by Chas Pope
The video, just 12 seconds long, shows what appears to be toxic smog descending on buildings over 20 minutes, with nearby structures becoming almost unrecognizable. The video was by taken by Chas Pope, a British worker, and posted on Monday, just as the city has been grappling with yet another extended bout of pollution.
Residents have come to expect such dense air pollution in the late fall and winter, as people burn coal to heat their homes. Recently, the problem has been particularly bad, and the city has been enveloped in smog for extended periods starting in October.
Mr. Pope, writing on Twitter, pegged the air quality index, a measure of the pollution, above 400 around the time of the video. The United States government rates readings of 301 to 500 as “hazardous.”
The past few weeks have been especially bad in Beijing. Officials declared a red alert for the city on Dec. 16, the most severe warning in a four-tier system, forcing older, high-emissions motor vehicles to stay off the road and schools to close. Hundreds of flights were canceled and highways were shut down because of low visibility.
Adding to the disruptions, the government on Tuesday issued its first-ever national red alert for fog, saying visibility would be as low as 50 meters, or about 160 feet, across northern China. And Xinhua, the state news agency, said the smog in Beijing was expected to last until a cold front arrives next week.
While China has taken steps in recent years to reduce the burning of fossil fuels that contribute to such smog, a combination of factors in Beijing, including weather patterns, vehicle exhaust and the city’s geographic position near mountains that trap emissions, have made progress tough.