Publication Date:
2019-07-13
Description:
Parachute-borne measurements of electrical parameters in the stratosphere and mesosphere are discussed which were made in January 1976 as part of a 'coordinated winter-anomaly program' conducted at Wallops Flight Center, Va. The instruments used included Gerdien condensers, a blunt conductivity probe, and UV lamps for obtaining a measure of atmospheric NO. Measurements of the positive component of electrical conductivity on two 'anomalous' and two 'normal' days are compared, wave-interaction electron densities over the height range from 50 to 90 km are determined for the four days, and the effects of the UV lamps on one 'normal' and one 'anomalous' day are described. The results are shown to support the hypothesis that the enhancements in positive ion conductivity observed on 'anomalous' days are caused by a reduction of the aerosol population that is a 'normal' feature of the stratosphere and mesosphere. A possible scenario for this reduction is considered which involves electric-field transport of aerosol particles out of the upper stratosphere and mesosphere.
Keywords:
GEOPHYSICS
Type:
Plenary Meeting; Jun 07, 1977 - Jun 18, 1977; Tel Aviv; Israel
Format:
text
Permalink