Assessment of Atmospheric Condensation Nuclei Associated with Jet Aircraft Traffic.
Abstract
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 1000/cc) concentrations in the troposphere and typically low (approximately 10/cc) 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1977
- Accession Number
- ADA036504
Entities
People
- D. J. Hofmann
- J. M. Rosen
Organizations
- University of Wyoming