Understanding the aging process of aerosol particles is important for assessing their chemical reactivity, cloud condensation nuclei activity, radiative properties and health impacts. In this study we investigate the aging of black carbon containing particles in an idealized urban plume using a new approach, the particle-resolved aerosol model PartMC-MOSAIC. We present a method to estimate aging time-scales using an aging criterion based on cloud condensation nuclei activation. The results show a separation into a daytime regime where condensation dominates and a nighttime regime where coagulation dominates. For the chosen urban plume scenario, depending on the supersaturation threshold, the values for the aging time-scales vary between 0.06 hours and 10 hours during the day, and between 6 hours and 20 hours during the night.
Transboundary secondary organic aerosol in western Japan indicated by stable carbon isotope ratio of low volatile water-soluble organic carbon and signal at m/z 44 in organic aerosol mass spectra
Cantilever-enhanced photoacoustic measurement of light-absorbing aerosols
光声检测是一种直接测量气溶胶中吸光颗粒的灵敏方法。在这篇文章中，我们展示了一种新的光声气溶胶吸收测量的灵敏技术，使用悬臂梁麦克风的光声信号的检测。与传统振膜传声器相比，悬臂梁的灵敏度提高了两个数量级。在这里，我们达到了0.013 Mm $^{-1}$（一个标准差）的噪声水平，采样时间为20 s，使用简单的单通设计，而不需要谐振声学单元。我们证明了该方法在尺寸选择的苯胺黑颗粒和环境黑碳的测量。由于其出色的灵敏度，该技术在要求低检测限的应用中显示出巨大的潜力，例如尺寸选择的吸收测量和超净环境中的炭黑检测。
Improving Ensemble CAPE Forecasts with a Diffusion Model Incorporating Aerosol Information
Cornell University, Department of Statistics and Data Science（康奈尔大学统计与数据科学系）；Washington University in St. Louis, Department of Statistics and Data Science（圣路易斯华盛顿大学统计与数据科学系）；Cornell University, Department of Earth and Atmospheric Sciences（康奈尔大学地球与大气科学系）
Investigating the short-term effects of particulate matter (PM) chemical components on mortality and the potential modifying effect of extreme temperature: A time-series analysis in London
Emerging Amines reshape the paradigm of urban atmospheric particle formation
Tianjin Key Laboratory of Urban Transport Emission Research & State Environmental Protection Key Laboratory of Urban Ambient Air Particulate Matter Pollution Prevention and Control, College of Environmental Science and Engineering, Nankai University（南开大学环境科学与工程学院城市交通排放天津市重点实验室、城市环境颗粒物污染防控环境保护部重点实验室）
