Ace-1 Aerosol Physics Instrumentation: A Workshop for the Inter-comparison of Particle Counters, Number Size Distribution Measurements & Cloud Condensation Nucleus Counters

这个项目是南半球海洋气溶胶表征实验（ACE-1）的一部分，该实验将于1995年在遥远的南太平洋进行，使用飞机、船载和地面对各种化学物质、物理和气象参数进行测量，其中心目标是调查大气气溶胶的形成、演化和光学特性。这些目标的一个重要组成部分是测量气溶胶的数量和大小分布以及云凝结核。本项目将是ACE-1之前举办的一个研讨会，对ACE-1各平台上使用的粒子计数器、粒度装置和云凝结核计数器进行比较。讲习班的目标是确定和尽量减少不同仪器之间的浓度和大小测量差异，以便实地测量的差异可以可信地解释为真实的，并且是由于气溶胶物理和化学的差异，而不是仪器之间的变异性。将建造一个气溶胶生成设施，以生产已知大小、浓度和化学成分稳定的单分散和多分散气溶胶。这种受控气溶胶旨在模拟ACE-1期间将遇到的大气。ACE-1气溶胶物理测量的参与者将能够平行取样这些气溶胶并比较它们的结果。在相互比较的过程中，寻找并尽量减少差异的原因。

9418419 Covert This project is part of the Southern Hemisphere Marine Aerosol Characterization Experiment (ACE-1), which will be conducted in the remote Southern Pacific in 1995 using aircraft, ship-board, and ground-based measurements of a wide variety of chemical species, physical and meteorological parameters with the central goal of investigating the formation, evolution, and optical properties of atmospheric aerosol. A significant component of these objectives is the measurement of aerosol number and size distribution and cloud condensation nuclei. This project will be a workshop held in advance of ACE-1 to intercompare the particle counters, particle sizing devices, and cloud condensation nuclei counters which will be used on the various ACE-1 platforms. The goal of the workshop is to determine and minimize the variance in the concentration and size measurements between the different instruments such that differences measured in the field can be interpreted with confidence as real and due to differences in aerosol physics and chemistry rather than variability between instruments. An aerosol generation facility will be constructed to produce monodisperse and polydisperse aerosols of stable known size, concentration and chemical composition. This controlled aerosol is intended to simulate the atmosphere that will be encountered during ACE-1. The participants in ACE-1 aerosol physics measurements will be able to sample these aerosols in parallel and compare their results. The causes of differences will be sought and minimized in the course of the intercomparison.