NDLI: Project fog drops. part 2: laboratory investigations

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Project fog drops. part 2: laboratory investigations

Content Provider	NASA Technical Reports Server (NTRS)
Author	Kocmond, W. C. Mack, E. J. Katz, U. Pilie, R. J.
Copyright Year	1972
Description	Measurements of the total nucleus concentration and cloud condensation nuclei (CCN) were acquired for several conditions representing both high normal and severe pollution levels for the Los Angeles Basin as well as clean filtered air. The data show that in filtered air there is a large photochemically induced increase in the total particle content within a few minutes after starting the lamp. The concentration of CCN remains near zero, until sufficient coagulation and condensation occurs on the smaller Aitken particles. The addition of gaseous pollutants to filtered air results in large increases in the photochemical production of both the cloud and Aitken nucleus concentration. Fogs were also generated under controlled, reproducible conditions in the cloud chamber and seeded with aerosols of various compounds which form monomolecular surface films at air-water interfaces. Visibility characteristics and droplet data were obtained. The data suggest that droplet growth on treated nuclei can be retarded but fog formation was not significantly altered by the chemical seeding.
File Size	1723631
Page Count	41
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_19720022905
Archival Resource Key	ark:/13960/t3227p611
Language	English
Publisher Date	1972-07-01
Access Restriction	Open
Subject Keyword	Meteorology Aerosols Cloud Seeding Photochemical Reactions Cloud Physics Fog Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Technical Report

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