Shipboard Measurements of Size-Resolved Single Particle Chemistry with a Transportable Aerosol Time-of-Flight Mass Spectrometer during the 2001 ACE-Asia Intensive Field Operations

该项目涉及在ACE-Asia现场实验期间对单个颗粒大小和化学成分的实时船上测量。这些测量将在NOAA科考船罗恩·布朗号上使用便携式气溶胶飞行时间质谱仪(ATOFMS)进行。这些测量将提供气溶胶颗粒的物理和化学性质，量化控制其演变的物理和化学过程，并评估气溶胶颗粒的化学成分在气候变化中的作用。特别有兴趣的是评估采样地点中存在的颗粒的混合程度和反应/老化程度，以便评估它们的时间和化学变异性。拟议的ATOFMS单粒子分析将使用来自单粒子质谱图的离子标记的不同组合，帮助识别和分配来自不同来源的相对贡献。

This project involves the shipboard measurement of real-time individual particle size and chemical composition during the ACE-Asia field experiment. These measurements will be made aboard the NOAA research vessel Ron Brown using a transportable aerosol time-of-flight mass spectrometer (ATOFMS). The measurements will provide physical and chemical properties of aerosol particles, quantification of physical and chemical processes controlling their evolution, and assessment of the role of chemical composition of aerosol particles in climate change. Of particular interest will be to assess the degree of mixing and reaction/aging of the particles present in the sampling locations in order to evaluate their temporal and chemical variability. The proposed ATOFMS single particle analysis will help identify and allocate relative contributions from different sources, using distinct combinations of ion markers from the single particle mass spectra.