...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric chemistry and physics >Transport of Po Valley aerosol pollution to the northwestern Alps Part 1: Phenomenology
【24h】

Transport of Po Valley aerosol pollution to the northwestern Alps Part 1: Phenomenology

机译：Po Valley气溶胶污染的运输到西北阿尔卑斯山第1部分：现象学

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Mountainous regions are often considered pristine environments; however they can be affected by pollutants emitted in more populated and industrialised areas, transported by regional winds. Based on experimental evidence, further supported by modelling tools, here we demonstrate and quantify the impact of air masses transported from the Po Valley, a European atmospheric pollution hotspot, to the northwestern Alps. This is achieved through a detailed investigation of the phenomenology of near-range (a few hundred kilometres), trans-regional transport, exploiting synergies of multi-sensor observations mainly focussed on particulate matter. The explored dataset includes vertically resolved data from atmospheric profiling techniques (automated lidar ceilometers, ALCs), vertically integrated aerosol properties from ground (sun photometer) and space, and in situ measurements (PM10 and PM2.5, relevant chemical analyses, and aerosol size distribution). During the frequent advection episodes from the Po basin, all the physical quantities observed by the instrumental setup are found to significantly increase: the scattering ratio from ALC reaches values > 30, aerosol optical depth (AOD) triples, surface PM10 reaches concentrations > 100 mu gm(-3) even in rural areas, and contributions to PM10 by secondary inorganic compounds such as nitrate, ammonium, and sulfate increase up to 28 %, 8 %, and 17 %, respectively. Results also indicate that the aerosol advected from the Po Valley is hygroscopic, smaller in size, and less light-absorbing compared to the aerosol type locally emitted in the northwestern Italian Alps. In this work, the phenomenon is exemplified through detailed analysis and discussion of three case studies, selected for their clarity and relevance within the wider dataset, the latter being fully exploited in a companion paper quantifying the impact of this phenomenology over the long-term (Diemoz et al., 2019). For the three case studies investigated, a high-resolu
机译：山区的地区通常被认为是原始环境;然而，它们可能受到区域风运输的更具人口稠密和工业化地区的污染物的影响。基于实验证据，通过建模工具进一步支持，在这里，我们展示和量化了从欧洲大气污染热点，欧洲大气污染热点到西北阿尔卑斯山脉运输的空气群众的影响。这是通过详细调查近范围（几百公里），跨区域运输的现象学，利用多传感器观测的开发协同作用来实现的，主要侧重于颗粒物质。探索的数据集包括来自大气分析技术的垂直解决数据（自动激光雷达CEILOMERS，ALC），从地面（太阳光度计）和空间的垂直整合气溶胶性质，以及原位测量（PM10和PM2.5，相关的化学分析和气溶胶尺寸分配）。在PO流域的频繁的平流发作期间，仪器设置观察到的所有物理量都被发现显着增加：来自ALC的散射比率达到值> 30，气溶胶光学深度（AOD）三元组，表面PM10达到浓度>100μm GM（-3）即使在农村地区，也分别对硝酸盐，铵和硫酸盐等次级无机化合物的贡献分别增加了高达28％，8％和17％。结果还表明，与西北意大利阿尔卑斯山西北部局部发射的气溶胶型相比，从PO山谷建立的气溶胶是吸湿的，较小的尺寸，更少的吸收性。在这项工作中，通过对三种案例研究的详细分析和讨论来举例说明了这种现象，选择了在更广泛的数据集中的清晰度和相关性，后者在伴侣纸上充分利用了长期（ Diemoz等人。，2019）。对于调查的三个案例研究，一个高分辨率

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号