25 provinces in Nanjing primary and secondary emergency haze weather closed (photo) | school | | haze of Nanjing _ news

In 25 provinces, "haze v" Nanjing school emergency closure

According to the Xinhua News Agency, Shanghai, Jiangsu, Zhejiang, ... ... Just entered in December, most of East-Central China suffered persistent haze weather again. According to the Central meteorological station statistics, as at 4th, China has 25 provinces (autonomous regions and municipalities) haze weather have occurred to varying degrees. The Central Meteorological Observatory predicted, the night of 4th to 5th, and large parts of the South were still light fog in Eastern China. Parts of Jiangsu, has severe haze.

　　This haze "lazy" strong

It is understood that the recent haze weather "lazy" strong base in North China to the Jiangnan area, little change in a few days. Among them, Anhui and Jiangsu, the most serious haze and fog "disastrous" is located in the Yangtze-huaihe region South and Southwest.

Expected December 4, adverse weather condition will persist, December 8, under the influence of strong cold air, southern part of North China to the Yangtze River Delta area, will significantly improve meteorological conditions.

Environment Ministry official 4th analyses the main factor contributing to widespread haze: a continuous build-up of pollutants caused by unfavourable meteorological conditions. Near-surface weather control for static stability, the air in the horizontal and vertical mobility is very small, atmospheric dispersion conditions are poor. Second, vehicle exhaust and large coal-fired heating contributes to the deterioration of air quality in winter in the North. Accumulation of weather condition for static stability of motor vehicle exhaust emission, particularly in northern areas because of surging energy consumption for heating emissions, have a serious impact on air quality.

(Original title: 25 provinces in the "haze v" Nanjing school emergency closure)

(Edit: SN098)
December 05, 2013 The Beijing News
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25省份遭遇雾霾天气 南京中小学紧急停课(图)|中小学|南京|雾霾_新闻资讯

　　25省份中“霾伏” 南京中小学紧急停课

　　据新华社电 江苏、浙江、上海……刚入12月，中国中东部大部地区再次遭遇持续性雾霾天气。据中央气象台统计，截至4日18时，我国已有25个省(区、市)不同程度地出现过雾霾天气。中央气象台预计，4日夜间到5日上午，我国东部和南方大部地区仍有轻雾。江苏等地的部分地区有重度霾。

　　本轮雾霾“惰性”较强

　　据了解，本轮雾霾天气的“惰性”较强，基本在华北至江南一带活动，几日来位置变化不大。其中，苏皖等地的霾最为严重，而大雾的“重灾区”则位于西南及江淮地区。

　　预计12月4日至8日，不利气象条件仍将持续，12月8日至11日，受较强冷空气影响，华北中南部至长三角地区等气象条件将明显改善。

　　环保部有关负责人4日分析了造成大范围灰霾天气的主要原因：一是不利气象条件造成污染物持续累积。受近地面静稳天气控制，空气在水平和垂直方向流动性均非常小，大气扩散条件非常差。二是机动车尾气和北方冬季燃煤采暖对空气质量恶化贡献较大。静稳天气条件下机动车尾气排放累积，特别是北方地区因为采暖期猛增的能源消耗排放，对空气质量造成严重影响。

(原标题：25省份中“霾伏” 南京中小学紧急停课)

（编辑：SN098）
2013年12月05日02:39
新京报
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