Dust grays Lhasa's blue skies( Xinhua) 20:59, December 19, 2013 LHASA, Dec. 19 -- Dust is obscuring the sights of Lhasa, capital of southwest China's TibetAutonomous Region on Thursday, disrupting flights.
Renowned as "sun city", Lhasa normally basks under blue skies with rarely a foggy day.
Liu Yijun, a senior engineer at the local meteorological observatory, said a sharp drop intemperature, lower pressure and accumulated particulates are main causes of the murkwhich is forecast to last for another two days.
The dust cloud first manifest itself in Lhasa and neighboring counties of Quxu and Gonggarearly on Thursday morning.
Poor visibility at Gonggar Airport in Lhasa meant two flights were canceled and anotherseven were unable to land. The airport had resumed normal operation by 2 p.m..
（Editor：intern1、Yan Meng） Related reading
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