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March 11, 2013

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Temperature seesaw continues for 3 days

SHANGHAI'S temperature roller coaster will continue for several days as today's high of 11 degrees Celsius is expected to give way to a high of 21 degrees tomorrow, then fall back to a high of 11 degrees on Wednesday due to a cold front.

The windy weather that has accompanied the changes significantly reduced air pollution in the city yesterday while causing some transportation troubles.

The temperature roller coaster reached the top on Saturday when a high of 29.5 degrees set a 140-year record. It plummeted by nearly 20 degrees in one day, as Xujiahui recorded a high of only 9.9 degrees yesterday.

Today should be cloudy to overcast with drizzle in part of the city, with a low of 6 degrees.

After a warm day tomorrow, rain is forecast at night and it should last until Thursday, officials of the Shanghai Meteorological Bureau said.

Both Thursday and Friday will see cloudy weather with stable temperatures ranging between 5 and 14 degrees.

Levels of PM2.5 and PM10 pollutants that were high last week fell with strong winds yesterday.

The density of PM2.5 dropped from the peak of 180 micrograms per cubic meter at 2am yesterday to below 40 micrograms per cubic meter at 6am. The reading was only 18.5 micrograms per cubic meter at 6pm.

The PM10 also dropped from 450 micrograms per cubic meter at 1am to 69.4 micrograms per cubic meter at 6pm.

The nation's limit on PM2.5 is 75 micrograms per cubic meter within the latest 24 hours and 150 for PM10.

Strong winds in northern China, however, caused some trains to slow down yesterday, leading to delays, said railway operators.

Shanghai Railway Bureau said seven bullet train services of the Beijing-Shanghai line had delays from 15 to 30 minutes.

Other trains, such as the one from Urumqi to Shanghai, also reported delays because of the weather.

Operators also said they will add train services to nearby cities like Nanjing and Hangzhou as people take spring tours.

Winds also caused trouble for local ferry services.

Ferries to Chongming Island and Yangshan Deep-Water Port were canceled yesterday.

Some services had resumed by late yesterday as the wind weakened.


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