MEASUREMENT TECHNIQUES IN CLOUDS.
Abstract
The technical problems involved in aircraft measurements of air conductivity, space charge, and electric fields are reviewed. Conductivity measurements require that particles do not strike the sensitive electrode and that electric fields in the vicinity of the air intake do not disturb the ambient ion populations. Space charge measurements are particularly required for the large ion and cloud droplet densities and for the precipitation charges. Substantial progress has been made with induction ring techniques for the precipitation charge. A great deal of work remains to be done on instrumentation for reliable droplet and large ion measurements. Electric field measurements can be accomplished with radioactive probes or field meters of the induction type. Illustrations of the performance of field meters in and around large clouds are given and the necessity of separating the aircraft charge field from the external field is stressed. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 01, 1965
- Accession Number
- AD0623682
Entities
People
- D. R. Fitzgerald
Organizations
- Air Force Cambridge Research Laboratories