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首页> 外文会议>International Laser Radar Conference >LONG-RANGE TRANSPORT AND ITS IMPACT ON THE VERTICAL DISTRIBUTION OF TRACE CONSTITUTENTS IN THE CENTRAL EUROPEAN FREE TROPOSPHERE
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LONG-RANGE TRANSPORT AND ITS IMPACT ON THE VERTICAL DISTRIBUTION OF TRACE CONSTITUTENTS IN THE CENTRAL EUROPEAN FREE TROPOSPHERE

机译：远程运输及其对中欧自由层痕量成分垂直分布的影响

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摘要

Numerous case studies in recent years based on lidar sounding series at IMK-IFU extended to up to four days have established characteristic patterns of the transport routes and the source regions contributing to the observed ozone and aerosol structures in the free troposphere. The most important source regions were found to be the Sahara desert (particles), the stratosphere over the Northwest Atlantic and Northwest Pacific, the boundary layers in North America and East Asia (characterized by an ozone import of typically 80 to 110 ppb), and the (sub)tropical Atlantic (yielding ozone mixing ratios between 20 and 40 ppb). The export of polluted air masses from the boundary layer is dominated by lifting in warm conveyor belts. In the vicinity of the frontal systems mixing of the contributions from different source regions in the United States and Mexico is observed. The most striking recent result is repeatedly verified mixed ozone import from East Asia and the stratosphere in adjacent areas in rapid and dry middle and upper tropospheric air streams partly as thick as 6 km.
机译：近年来，基于IMK-IFU的LIDAR发出系列的许多案例研究延长至多四天，已经建立了运输路线的特征模式，源区有助于观察到的臭氧和气溶胶结构在自由对流层中。发现最重要的来源地区是撒哈拉沙漠（粒子），西北大西洋和西北太平洋的平流层，北美和东亚的边界层（以臭氧导入为100至110 ppb），以及（亚）热带大西洋（产生臭氧混合比率20至40 ppb）。来自边界层的污染空气质量的出口是通过在温暖的传送带中提升的主导。在额外的系统附近，观察到来自美国和墨西哥的不同源区的贡献。最近的结果最近的结果是一再验证了来自东亚的混合臭氧，以及快速干燥的中间和上层气流的相邻地区的平流层部分，部分与6公里一样厚。

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