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首页> 外文期刊>Tellus, Series B. Chemical and Physical Meteorology >Hygroscopic properties of submicrometer atmospheric aerosol particles measured with H-TDMA instruments in various environments - a review
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Hygroscopic properties of submicrometer atmospheric aerosol particles measured with H-TDMA instruments in various environments - a review

机译：使用H-TDMA仪器在各种环境下测量的亚微米级大气气溶胶颗粒的吸湿特性-综述

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摘要

The hygroscopic properties play a vital role for the direct and indirect effects of aerosols on climate, as well as the health effects of particulate matter (PM) by modifying the deposition pattern of inhaled particles in the humid human respiratory tract. Hygroscopic Tandem Differential Mobility Analyzer (H-TDMA) instruments have been used in field campaigns in various environments globally over the last 25 yr to determine the water uptake on submicrometre particles at subsaturated conditions. These investigations have yielded valuable and comprehensive information regarding the particle hygroscopic properties of the atmospheric aerosol, including state of mixing. These properties determine the equilibrium particle size at ambient relative humidities and have successfully been used to calculate the activation of particles at water vapour supersaturation. This paper summarizes the existing published H-TDMA results on the size-resolved submicrometre aerosol particle hygroscopic properties obtained from ground-based measurements at multiple marine, rural, urban and free tropospheric measurement sites. The data is classified into groups of hygroscopic growth indicating the external mixture, and providing clues to the sources and processes controlling the aerosol. An evaluation is given on how different chemical and physical properties affect the hygroscopic growth.
机译：吸湿性对于气溶胶对气候的直接和间接影响以及颗粒物质（PM）的健康影响都起着至关重要的作用，它通过改变吸入的颗粒在潮湿的人类呼吸道中的沉积方式来发挥作用。在过去的25年中，全球范围内在各种环境下的田间运动中都使用了吸湿串联差动分析仪（H-TDMA）来确定亚饱和条件下亚微米级颗粒的吸水率。这些研究已经获得了有关大气气溶胶颗粒吸湿特性（包括混合状态）的有价值而全面的信息。这些性质决定了在环境相对湿度下的平衡粒径，并已成功地用于计算水蒸气过饱和时的活化度。本文总结了已发布的有关H-TDMA的现有结果，这些结果来自于在多个海洋，农村，城市和对流层自由测量地点的地面测量获得的尺寸分辨的亚微米气溶胶颗粒吸湿特性。数据分为指示外部混合物的吸湿性增长组，并为控制气溶胶的来源和过程提供了线索。对不同的化学和物理性质如何影响吸湿性生长进行了评估。

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