In situ stratospheric ozone measurements by long path UV absorption - Developments and interpretation

Details In situ stratospheric ozone measurements by long path UV absorption - Developments and interpretation In situ stratospheric ozone measurements by long path UV absorption - Developments and interpretation

Apr 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986jgr....91.5237w&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 91, April 20, 1986, p. 5237-5248.

Physics

11

Atmospheric Attenuation, Ozonometry, Stratosphere, Ultraviolet Absorption, Accuracy, Airborne Equipment, Calibrating, Mixing

Scientific paper

A high-sensitivity, in situ UV absorption ozone sensor has been developed for use in the stratosphere. The instrument couples 254-nm radiation from a low-pressure mercury discharge lamp into a 40-pass White cell to attain a high-sensitivity ozone absorption measurement. Preflight/postflight laboratory tests utilizing an ozone source coupled to a laboratory UV ozone photometer in a fast-flow system as well as in-flight diagnostics verify the successful operation of the instrument. Evidence is presented to verify that in situ UV absorption ozone photometers can measure stratospheric ozone with better than 3 percent precision and 5 percent accuracy, provided proper attention is given to both the thermal field surrounding the gondola and the ambient pressure measurements. Ozone data are compared with modeled profiles in the 28- to 40-km region. An assessment of the disagreement between observations and modeled profiles is given along with suggestions for future experiments designed to constrain photochemical models.

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