The National Meteorological Centre renewed a yellow alert for fog, warning that visibility in parts of Beijing, Hebei, Henan, Shandong, Jiangsu, Hubei, Liaoning, Sichuan, Xinjiang will be reduced to less than 200mor even 50m on Tuesday (Dec 10).
However, as a cold front is sweeping southward, foggy weather will come to an end on Wednesday, the centre said.
The presence of fog was mainly due to unfavorable weather conditions including high humidity, temperature inversion and stable air, said Wang Zifa, a researcher with the Institute of Atmospheric Physics of the Chinese Academy of Sciences.
Heavy fog has enveloped the northern and central parts of China over the past four days, prompting 55 cities to issue alerts and reduce pollution.
But this week, areas all over China will also be affected, including Shanghai, with temperatures predicted to hit as low as 3 degrees Celsius downtown, with chances of frost farther out from the city centre. Temperatures are estimated to pick up a bit on Thursday, reaching around 13 degrees Celsius, with a mild drop down to 10 degrees Celsius for Friday.
From there, things will only continue to cool down, as ‘meteorological winter’ – five consecutive days of an average temperature below 10 degrees Celsius – will be coming soon.
China has a three-tier colour-coded warning system for fog, with red being the most serious, followed by orange and yellow. - Xinhua/ANN
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