内外因一起影响京津冀雾霾

	山西TT高臭氧紫外线灯/整理
Shanxi TT high ozone ultraviolet lamp / finishing


	据中国气象局统计，2015年入冬以来，京津冀地区经历了四次严重雾霾过程。中国气象局预测，未来几天，包括元旦假期在内，京津冀地区出现严重雾霾过程的可能性较小。
According to the China Meteorological Bureau statistics, since the winter of 2015, the Beijing Tianjin Hebei region experienced four serious haze process. China Meteorological Bureau forecast, the next few days, including new year's holiday, less likely to appear serious haze process in Beijing Tianjin Hebei region.

中国气象局环境气象中心**预报员马学款认为，京津冀的雾霾日数多、过程重，既与污染物排放源强度和分布有关，也与不利气象条件有关，污染排放是内因，气象条件是外因、是控制因子。
China Meteorological Bureau of environmental meteorological center chief forecaster learning models Ma believes that the Beijing, Tianjin and haze day number, weight, both and pollutant emission source intensity and distribution about, and adverse weather conditions, pollution emissions is internal and meteorological conditions is external factor, is the control factor.

今年京津冀的冷空气强度弱，小风日数多，导致污染物水平扩散能力差。此外，大气层结稳定，混合层**高度低，抑制了污染物的垂直扩散，空气湿度大也利于雾霾积聚。
The intensity of cold air this year Beijing Tianjin Hebei weak wind days, leading to poor dispersion of pollutants. In addition, the stability of atmosphere, the top of the mixing layer height is low, restrain the vertical diffusion of pollutants, air humidity is also conducive to the accumulation of haze.

国家气候中心气候监测室***周兵认为，小风日数增加、湿度偏高等加剧雾霾过程的气象因素，与不断增强的厄尔尼诺现象有所联系。入冬以来，华北、黄淮及东北地区在对流层低层表现为异常的偏南风，一方面利于东南暖气水汽“北上”，使近地层空气湿度增大，污染物吸湿增长，大气能见度降低；另一方面较弱的偏南风会造成外源污染物向京津冀地区的输送，从而加重空气污染程度。
National Climate Center monitoring room chief expert Zhou Bing believes that wind days increase, high humidity and haze intensified process of meteorological factors, and constantly enhance the El Nino phenomenon has contact. Since the beginning of winter, North China, Huanghuai and Northeast China in the lower troposphere performance for anomalous southerly wind, is favorable to the southeast of heating vapor "North", the near ground air humidity increases, pollutants hygroscopic growth, reduced visibility; another weak southerly wind will caused by exogenous contaminant transport to the Beijing Tianjin Hebei region, thereby increasing the degree of air pollution.

为完善雾霾预警机制，气象局采用了“大气环境容量”分析。国家气候中心朱蓉博士指出，大气环境容量是指由气候背景条件决定的城市较大允许排放量，其系数反映了大气对污染物的通风稀释和雨洗作用。据周兵介绍，今年京津冀大部分地区的大气环境容量较近10年同期偏低60%以上。
In order to improve the early warning mechanism of haze, the Meteorological Bureau adopted the "analysis of atmospheric environmental capacity". National Climate Center Dr. Zhu Rong pointed out that the atmospheric environmental capacity is determined by the climate background of the city the maximum allowable emissions, the ventilation coefficient of atmospheric pollutants on the dilution and rain washing effect. According to Zhou Bing introduction, the atmospheric environmental capacity this year Beijing Tianjin Hebei in most areas than the same period of nearly 10 years is more than 60%.

中国气象科学研究院大气成分研究所副研究员刘洪利认为，综合评估对治理空气污染至关重要。地面只能监测单点和大气底层数据，无法掌握大气污染物垂直和水平输送，而大气流动必然导致污染物跨界传输。**源解析表明，北京地区污染物有将近1/3是跨界输送的结果。因此，立体化监测网络是分析、治理雾霾的前提。
Chinese research associate Atmospheric Composition Research Institute Liu Hongli believes that the comprehensive evaluation of air pollution is very important. Only a single point ground monitoring and atmospheric data, unable to grasp the vertical and horizontal transport of air pollutants, and air flow will inevitably lead to cross-border transmission of pollutants. That the Ministry of environmental protection in Beijing Menyuan analysis, pollutant is nearly 1/3 transboundary movement results. Therefore, the three-dimensional monitoring network is the premise of analysis, governance haze.