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Proceedings Paper

Compact measurement system for the simultaneous determination of NO, NO2, NOy, and O3 using a small aircraft
Author(s): James G. Walega; James E. Dye; Frank E. Grahek; Brian K. Ridley
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Paper Abstract

A high performance measurement system based upon NO/O3 chemiluminescence has been developed for simultaneous measurements of the title species using smaller aircraft such as the NCAR Sabreliner. NO is determined directly, NO2 is converted to NO by broad-band photolysis, NO(y) is converted to NO using gold-catalyzed reduction in the presence of CO, and O3 is determined using excess NO as the reagent. The system is capable of measurements of the odd nitrogen species at levels below 10 pptv. A description of the instrument and its application to some flights within a thunderstorm are presented.

Paper Details

Date Published: 1 May 1991
PDF: 10 pages
Proc. SPIE 1433, Measurement of Atmospheric Gases, (1 May 1991); doi: 10.1117/12.46167
Show Author Affiliations
James G. Walega, National Ctr. for Atmospheric Research (United States)
James E. Dye, National Ctr. for Atmospheric Research (United States)
Frank E. Grahek, National Ctr. for Atmospheric Research (United States)
Brian K. Ridley, National Ctr. for Atmospheric Research (United States)

Published in SPIE Proceedings Vol. 1433:
Measurement of Atmospheric Gases
Harold I. Schiff, Editor(s)

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