CCN Measurements in HARP

夏威夷将使用1985年在夏威夷使用的DRI瞬时CCN光谱仪的改进版本对云凝结核进行空中测量。将研究不同CCN谱对云微物理的影响。当与逆流虚拟撞击器一起使用时，这将提供产生大云滴的原子核的临界过饱和度的识别。CN计数器将增加这一能力，特别是在观察在其他类型的云中和附近观察到的可能的粒子产生机制方面。云层和夏威夷群岛对气溶胶的影响也将进行研究。

Airborne measurements of cloud condensation nuclei will be made in Hawaii with an improved version of the DRI instantaneous CCN spectrometer which was used in Hawaii in 1985. The effect on cloud microphysics of various CCN spectra will be studied. When used in conjunction with the counterflow virtual impactor this should provide identification of the critical supersaturations of the nuclei which produce large cloud droplets. A CN counter will add to the capabilities especially in looking at possible particle production mechanisms which have been observed in and near other types of clouds. The effect of clouds and the Hawaiian islands on the aerosol will also be studies.//