违反了 PRIMARY KEY 约束 'PK_t_counter'。不能在对象 'dbo.t_counter' 中插入重复键。 语句已终止。 2016年12月16—21日重度霾过程及大气环流异常-The severe haze in 16—21 December 2016 and associated atmospheric circulation anomalies
doi:  10.3878/j.issn.1006-9585.2017.17029
2016年12月16—21日重度霾过程及大气环流异常

The severe haze in 16—21 December 2016 and associated atmospheric circulation anomalies
摘要点击 129  全文点击 42  投稿时间:2017-02-26  最后修改时间:2017-05-04
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基金:  
中文关键词:  霾,污染,大气环流,气候变化和变率
英文关键词:  Haze, Pollution, Atmospheric  circulation, Climate  Chang and  variability
     
作者中文名作者英文名单位
袁东敏YUAN DONGMIN中国气象局公共气象服务中心
马小会MA XIAOHUI京津冀环境气象预报预警中心
引用:袁东敏,马小会..2016年12月16—21日重度霾过程及大气环流异常[J].气候与环境研究
Citation:YUAN DONGMIN,MA XIAOHUI..The severe haze in 16—21 December 2016 and associated atmospheric circulation anomalies[J].Climatic and Environmental Research(in Chinese)
中文摘要:
      本文针对2016年12月16—21日华北黄淮及周边地区的重度霾过程开展了诊断分析,发现全球、区域大气环流异常和局地气象条件是此次重度霾形成的重要原因之一。在此次过程中,受重度霾影响的面积为71万平方公里,霾持续时间达到6天,过程最高小时PM2.5浓度超过1100μg/m3。东大西洋/西俄罗斯和西太平洋波列(中高层)和北极涛动(近地面)均表现为显著的正位相型分布,综合调控了华北黄淮局地的环流场和气象条件,有利于霾的发生。华北黄淮上空的异常反气旋能够有效抑制垂直运动,减弱水平风速。与之对应,近地面层为明显的弱低压区和偏南暖湿气流。从局地气象条件看,地面小风速、高湿度以及浅薄的边界层是促使本次重度霾发生的重要因子。
Abstract:
      The severe haze over North China and Huanghuai area in 16—21 December 2016 was analyzed and the atmospheric circulation anomalies was diagnosed with one of the important causes. The coverage of this severe haze was 710000 km2, and the duration was 6 days. The highest measured hourly PM2.5concentration was above 1100μg/m3. The East Atlantic/West Russia and West Pacific teleconnections (mid-upper level) and Arctic Oscillation (near surface) were distributed as their positive patterns and impacted the local atmospheric circulations and meteorological conditions, which were benefit for the occurrence of haze. The anti-cyclone over North China and Huanghuai area confined the vertical motion efficiently and weakened the surface wind speed. Meanwhile, there was obvious weak low pressure area and southward, warm and humid air flow near surface. From the perspective of local meteorological conditions, the small surface wind, high humidity and shallowboundary layer were the most important contributors to the severe haze in 16—21 December 2016.
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