Balloon borne in-situ detection of OH in the stratosphere from 37 to 23 km

Details Balloon borne in-situ detection of OH in the stratosphere from 37 to 23 km Balloon borne in-situ detection of OH in the stratosphere from 37 to 23 km

Dec 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989georl..16.1433s&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 16, Dec. 1989, p. 1433-1436.

Physics

13

Balloon-Borne Instruments, Hydroxyl Radicals, Laser Induced Fluorescence, Metal Vapor Lasers, Stratosphere, Dye Lasers, Laser Pumping, Optical Coupling, Water Vapor

Scientific paper

The OH number density in the stratosphere has been measured over the altitude interval of 37 to 23 km at midday via a balloon-borne gondola launched from Palestine, Texas on July 6, 1988. OH radicals are detected with a laser-induced fluorescence instrument employing a 17-kHz-repetition-rate copper vapor laser-pumped dye laser optically coupled to an enclosed flow, in-situ sampling chamber. OH abundances ranged from 88 + or - 3l pptv in the 36 to 35 km interval to 0.9 + or - 0.8 pptv in the 24 to 23 km interval. The stated uncertainty includes that from both measurement precision and accuracy. Simultaneous detection of ozone and water vapor densities was carried out with separate on-board instruments.

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