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首页> 外文期刊>SOLA: Scientific Online Letters on the Atmosphere >Uplifting of Asian Continental Pollution Plumes from the Boundary Layer to the Free Atmosphere over the Northwestern Pacific Rim in Spring
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Uplifting of Asian Continental Pollution Plumes from the Boundary Layer to the Free Atmosphere over the Northwestern Pacific Rim in Spring

机译：春季西北太平洋边缘亚洲大陆污染羽团从边界层上升到自由大气

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References(26) Cited-By(4) Supplementary materials(4) Understanding of the uplifting of Asian pollution plumes into the free atmosphere is key to evaluating the impact of trans-Pacific transport on hemisphere-scale chemical compositions. In this study, a regional chemical transport model combined with lidar and surface observations off the northwestern Pacific Rim was used to investigate the uplifting mechanisms of Asian pollutants in the spring of 2011. The potential source regions of anthropogenic fine particulates in the boundary layer and free atmosphere in western Japan were also indentified. The model reproduced accurately the observed surface anthropogenic PM2.5 with correlation coefficient ranging from 0.5-0.65 and its vertical profiles in East Asia. Long-range transport from the Asian continent was responsible for the high anthropogenic PM2.5 concentrations in the free atmosphere over northwestern Pacific Rim in spring, with a contribution of 55-70% in selected five cases. The rarely-reported local weak trough and the saddle field over northeastern Asia were found to be important uplifting mechanisms from the boundary layer to the free atmosphere in addition to the well-known warm conveyor belt mechanism (WCB). It is suggested that more studies on these two mechanisms are needed.
机译：参考文献（26）被引用的文献（4）补充材料（4）了解亚洲污染羽流向自由大气的隆起是评估跨太平洋运输对半球规模化学成分影响的关键。在这项研究中，结合西北太平洋沿岸的激光雷达和表面观测的区域化学迁移模型，研究了2011年春季亚洲污染物的抬升机制。人为细颗粒的潜在源区位于边界层和自由层。日本西部的气氛也被确定。该模型准确地再现了观测到的表面人为PM2.5，其相关系数在0.5-0.65之间，并且在东亚地区具有垂直分布。从亚洲大陆进行的远距离运输是造成春季环太平洋西北部自由大气中高人为PM2.5浓度的原因，在选定的五种情况下，造成了55-70％的贡献。除了众所周知的温暖输送带机制（WCB）以外，东北亚上很少报道的局部弱槽和鞍场是从边界层到自由大气的重要抬升机制。建议对这两种机制进行更多的研究。

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