Assessment of Atmospheric Condensation Nuclei Associated with Jet Aircraft Traffic.
Annual rept. May 76-Apr 77,
WYOMING UNIV LARAMIE DEPT OF PHYSICS AND ASTRONOMY
Pagination or Media Count:
Measurement of condensation nuclei CN in the size range r or 0.01 micrometers by balloon-borne detectors from a number of stations suggests the following a CN profiles concentration vs altitude to 30km are somewhat uniform globally with typically high approximately 1000cc concentrations in the troposphere and typically low approximately 10cc concentrations in the stratosphere. b The troposhere appears to serve as a CN source for the stratosphere. c CN occuring in tropospheric layers are partially volatile at 150C. d A CN layer observed in the stratosphere at 22km was apparently due to the jet engine emissions of a high flying aircraft. In addition, larger particles r or 0.15 micrometers in the stratospheric sulfate layer have continued to decay uniformly following an injection apparently due to a volcanic eruption in October 1974.
- Atmospheric Physics
- Air Pollution and Control