Air quality during the Universiade compared with air quality yesterday morning.
No surprise here, except maybe the insane speed and degree with which smog swept back into the city following the closing of the Universiade in Shenzhen on Tuesday night. For ten days, the city experienced bright, clear blue skies with visibility up to 25 kilometers. By Thursday morning, that had plunged to 4-5 kilometers. So basically they went from Shire to Mordor in less than 48 hours.
Local environmental scientists blame the plunge largely on a shift in wind direction (from on-shore to off-shore) bringing pollutants down to Shenzhen from the north. Oh, and then there’s also the 430,000-odd vehicles that were pulled of the roads for the games which have now returned full-force. Funny, there’s no mention at all about cloud seeding…
We noticed the exact same phenomenon back when Expo ended, although I don’t think it was anywhere near this bad. But then again, maybe I’m not remembering clearly because my brain has probably been damaged from all the smog.