Cloud Condensation Nuclei Profile Value-Added Product

doi:10.2172/1052588

GSTDTAP > 地球科学

DOI	10.2172/1052588
报告编号	DOE/SC-ARM/TR-103
来源ID	OSTI ID: 1052588
	Cloud Condensation Nuclei Profile Value-Added Product
	McFarlane, S; Sivaraman, C; Ghan, S
	2012-10-08
出版年	2012
语种	英语
国家	美国
出版者	PNNL;Richland, WA
领域	地球科学
英文摘要	The cloud condensation nuclei (CCN) concentration at cloud base is the most relevant measure of the aerosol that influences droplet formation in clouds. Since the CCN concentration depends on supersaturation, a more general measure of the CCN concentration is the CCN spectrum (values at multiple supersaturations). The CCN spectrum is now measured at the surface at several fixed ARM sites and by the ARM Mobile Facility (AMF), but is not measured at the cloud base. Rather than rely on expensive aircraft measurements for all studies of aerosol effects on clouds, a way to project CCN measurements at the surface to cloud base is needed. Remote sensing of aerosol extinction provides information about the vertical profile of the aerosol, but cannot be directly related to the CCN concentration because the aerosol extinction is strongly influenced by humidification, particularly near cloud base. Ghan and Collins (2004) and Ghan et al. (2006) propose a method to remove the influence of humidification from the extinction profiles and tie the âdry extinctionâ retrieval to the surface CCN concentration, thus estimating the CCN profile. This methodology has been implemented as the CCN Profile (CCNPROF) value-added product (VAP).
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来源平台	US Department of Energy (DOE)
引用统计
文献类型	科技报告
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/5601
专题	地球科学
推荐引用方式 GB/T 7714	McFarlane, S,Sivaraman, C,Ghan, S. Cloud Condensation Nuclei Profile Value-Added Product:PNNL;Richland, WA,2012.