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首页> 外文期刊>SOLA: Scientific Online Letters on the Atmosphere >Gravity-Current Driven Transport of Haze from North China Plain to Northeast China in Winter 2010-Part I: Observations
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Gravity-Current Driven Transport of Haze from North China Plain to Northeast China in Winter 2010-Part I: Observations

机译：2010年冬季重力流驱动的霾从华北平原到东北的迁移-第一部分：观测

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References(17) Cited-By(5) Supplementary materials(2) Haze exerts a large effect on visibility reduction and has serious impacts on air quality and human health. Understanding the sources and transport of haze is of importance to improve the regional air quality and evaluate its health effects. In this study, we investigated a typical haze episode that occurred in northeast (NE) China during 4-6 November 2010 by analyzing the ground PM10 measurements from 11 monitoring sites, aerosol Lidar observations, synoptic charts, MODIS satellite imageries, and back trajectories. Our analyses suggest that the regional haze formed in the North China Plain (NCP) under stagnant conditions can be transported to NE China in ∼1-3 days across Bohai Bay and Liaodong Bay - a typical transport pathway associated with the topography of northern China. The haze episode appeared to evolve progressively from southwest to northeast in the region of NE China, in agreement with the appearance of PM10 peak values, wind patterns, MODIS images and the back trajectories of air masses. Due to the haze impact, NE China showed significantly elevated particulate matter pollution by a factor of ∼4-6 with the peak concentrations reaching ∼410 μg m-3. The results together indicate that the regional transport from the NCP has a significant contribution to the PM pollution in NE China, thus efforts to control the source emissions over the NCP would be effective to improve the air quality in NE China.
机译：参考文献（17）被引用的文献（5）补充材料（2）雾霾对降低能见度有很大影响，并且对空气质量和人体健康有严重影响。了解雾霾的来源和运输对改善区域空气质量和评估其健康影响至关重要。在这项研究中，我们通过分析11个监测点的地面PM10测量值，气溶胶激光雷达观测，天气图，MODIS卫星图像和后向轨迹，调查了2010年11月4日至6日在中国东北发生的典型霾事件。我们的分析表明，停滞条件下在华北平原（NCP）形成的区域雾霾可在约1-3天之内通过渤海湾和辽东湾运到中国东北，这是与华北地形相关的典型运输路径。在中国东北地区，霾的发作似乎从西南向东北逐渐发展，与PM10峰值的出现，风型，MODIS图像和气团的后向轨迹一致。由于霾的影响，中国东北地区的颗粒物污染显着增加了约4-6倍，峰值浓度达到了约410μgm-3。结果共同表明，来自NCP的区域运输对中国东北地区的PM污染有重大贡献，因此控制NCP的源排放的努力将有效改善中国东北地区的空气质量。

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