Aircraft Measurements of Aitken Nuclei in the Lower Stratosphere.
Final technical rept.,
MISSOURI UNIV ROLLA GRADUATE CENTER FOR CLOUD PHYSICS RESEARCH
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The purpose of this article is to evaluate the first AN measurements using the new GE AN counter in stratospheric conditions. The instrument briefly described in this article was flown on a WB-57F aircraft in 1974 up to an altitude of 20 km. The vertical profiles of AN concentrations, measured mainly over New Mexico and Texas, showed AN counts comparable with the previous balloon measurements in the tropopause several hundred to 1,000 ncc. However, in altitudes above 13 km, the measured AN concentrations were higher by one order of magnitude 30 ncc than the older data of Junge et. al. 1961. The flights over the Rocky Mountains and over Texas indicate a potentially strong influence that mountainous areas have on AN counts in the lower stratosphere. The measurements also showed the pollution of the lower stratosphere caused by aircraft emissions in the tropopause.
- Atmospheric Physics
- Physical Chemistry
- Test Facilities, Equipment and Methods