Aircraft measurements of Aitken nuclei in the lower stratosphere. Final technical report

Technical Report · Thu Apr 24 00:00:00 EDT 1975

OSTI ID:7328176

Podzimek, J; Sedlacek, W A; Haberl, J B

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 n/cc). However, in altitudes above 13 km, the measured AN concentrations were higher by one order of magnitude (30 n/cc) 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. (GRA)

• Research Organization: Missouri Univ., Rolla (USA). Graduate Center for Cloud Physics Research
• OSTI ID: 7328176
• Report Number(s): AD-A-019583
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AERIAL MONITORING
AEROSOLS
AIR POLLUTION
CALIBRATION
CHARGED PARTICLES
COLLOIDS
DISPERSIONS
EARTH ATMOSPHERE
EXHAUST GASES
GASEOUS WASTES
MONITORING
MOUNTAINS
NEW MEXICO
NORTH AMERICA
NUCLEI
PARTICLE SIZE
PARTICLES
POLLUTION
SAMPLING
SIZE
SOLS
SOUTHWEST REGION
STRATOSPHERE
TEXAS
USA
WASTES