Accession Number : AD0664187

Title :   FEASIBILITY OF MEASURING VERTICAL ELECTRIC FIELDS IN CUMULUS CLOUDS USING A HOT-AIR BALLOON AND A HELICOPTER.

Descriptive Note : Final rept. 3 Jan 66-30 Sep 67,

Corporate Author : LITTON SYSTEMS INC MINNEAPOLIS MINN APPLIED SCIENCE DIV

Personal Author(s) : Handman,Arthur L.

Report Date : DEC 1967

Pagination or Media Count : 30

Abstract : A hot-air balloon was used but rejected; a helicopter was also used for measuring electric fields in clouds. Dynamic variations of electric field were detected within growing cumulus clouds; these variations are caused by internal advective and convective motions. Because the magnitudes of the field changes are small, a constant redistribution of space charge carried aloft in the updraft is suggested. A recommendation is made that complete electrical evaluation of cumulus clouds be made: from nucleation to cumulo-nimbus development. A high-performance helicopter should be utilized. (Author)

Descriptors :   (*ELECTROSTATIC FIELDS, CUMULUS CLOUDS), (*ELECTROSTATIC FIELDS, MEASUREMENT), BALLOONS, BALLOON EQUIPMENT, HELICOPTERS, INSTRUMENTATION, ATMOSPHERIC MOTION, VOLTAGE, MEASURING INSTRUMENTS, ELECTROMETERS, AIR MASS ANALYSIS

Subject Categories : Meteorology
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE