男女羞羞视频在线观看,国产精品黄色免费,麻豆91在线视频,美女被羞羞免费软件下载,国产的一级片,亚洲熟色妇,天天操夜夜摸,一区二区三区在线电影

Thick smog grounds flights and fouls air

Updated: 2012-01-11 08:20

By Zheng Xin (China Daily)

  Comments() Print Mail Large Medium  Small

BEIJING - More than 100 flights in Beijing were grounded because of smog at dawn on Tuesday, according to Capital International Airport.

Thick smog grounds flights and fouls air

A resident wearing a mask and sunglasses walks in Beijing, as heavy smog hit the city on Tuesday. Wamg Jing / China Daily

The smog, which delayed 80 flights and canceled 43 by 12 pm, caused a surge of airborne particulate matter in most parts of the city, the Beijing Municipal Environmental Protection Bureau said on its micro blog.

Visibility was reduced to less than 200 meters during rush hours, according to the city's meteorological bureau.

Air quality worsened with the smog, with the US embassy's air pollution index reading 500 at 7 am on Tuesday and its PM2.5 measurement (particulate matter smaller than 2.5 micrometers) reading 513 micrograms a cubic meter.

The embassy issued a health warning of emergency conditions in the morning, saying "all people are more likely to be affected".

According to the Beijing municipal environmental monitoring center, the capital witnessed a rapid increase of inhalable particle density since dawn because of the fog, especially in southeastern and southwestern parts of the city.

The data showed the average Air Pollution Index, based on PM10 data collection, around the US embassy was 212 micrograms a cubic meter, with sulfur dioxide readings reaching 70 and nitrogen dioxide reaching 102. The smog began to disperse as the wind picked up at midday, allowing planes to take off and land, with visibility improving to 2,000 meters around 1 pm, according to airport.

The city's monitoring station started releasing the pollutant density data collected at the 27 stations around the city, including the sulfur dioxide, nitrogen dioxide and PM10 levels.

Since Monday, the station has provided detailed data by area instead of a general figure for the whole city.

In addition, hourly readings of pollutants will soon be issued instead of the daily figure, and data on PM2.5 will be announced before the start of Spring Festival, which falls on Jan 23, the bureau said.

The bureau has also promised to take measures to reduce air pollutants.

"Although the foggy weather keeps the pollutants from dispersing, the PM2.5 readings wouldn't be this high if the city's air were clean enough, however heavy the fog is," said Wang Qiuxia, a researcher at Green Beagle, an environmental protection non-governmental organization based in Beijing.

"The fog is not an excuse."

 

主站蜘蛛池模板: 广河县| 东阳市| 宣威市| 石阡县| 涪陵区| 安平县| 明溪县| 田东县| 嵩明县| 北宁市| 汉中市| 海门市| 彰化县| 苍山县| 黔东| 盐山县| 禄丰县| 汪清县| 镇赉县| 芜湖县| 驻马店市| 星座| 南涧| 明星| 凤山县| 门源| 内黄县| 涡阳县| 城口县| 灵璧县| 白朗县| 高邮市| 黔东| 香格里拉县| 三江| 松原市| 福清市| 天津市| 伊宁县| 隆昌县| 永丰县| 普洱| 黎城县| 咸丰县| 平凉市| 镇雄县| 太仆寺旗| 新巴尔虎右旗| 亳州市| 乌拉特后旗| 武威市| 保亭| 改则县| 万源市| 大田县| 民勤县| 吉安县| 和静县| 丰城市| 新宾| 汉川市| 阳城县| 梨树县| 绥德县| 景德镇市| 湛江市| 长寿区| 油尖旺区| 蓬莱市| 山西省| 乌恰县| 苍梧县| 洪洞县| 湄潭县| 永吉县| 永仁县| 怀来县| 苍溪县| 德昌县| 大厂| 闵行区| 自治县|