Dubey, Manvendra K. and Hanisco, Thomas F. and Wennberg, Paul O. and Anderson, James G. (1996) Monitoring potential photochemical interference in laser-induced fluorescence measurements of atmospheric OH. Geophysical Research Letters, 23 (22). pp. 3215-3218. ISSN 0094-8276. doi:10.1029/96GL03008. https://resolver.caltech.edu/CaltechAUTHORS:20140718-140607725
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Abstract
In situ laser-induced fluorescence measurements of atmospheric OH are susceptible to interference from laser generated OH, particularly in the troposphere. To quantify this interference we implement the addition of perfluoropropene, C_3F_6, for the chemical removal of OH from the ambient air. The removal rate of OH by C_3F_6 is determined in the laboratory using the discharge flow technique. Over the temperature range 249 to 296 K the rate constant is (6.0±0.8) × 10^(−13) exp[(370±40)/T] cm^³ molecule^(−1) s^(−1), independent of pressure. In situ measurements using C_3F_6 addition are performed in both aircraft-borne and ground-based experiments. These studies show that laser excitation of the ^²Σ^+(v=1)← ^²Π(v=0) transition (282 nm) at high pulse repetition rates and low peak power can provide reliable and sensitive measurements of tropospheric OH.
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| Additional Information: | © 1996 American Geophysical Union. Manuscript Accepted: 19 Sep 1996. Manuscript Received: 17 Jul 1996. Paper number 96GL03008. We thank NASA's Upper Atmospheric Research and Atmospheric Effects of Aviation Programs for support. | |||||||||
| Group: | UNSPECIFIED, UNSPECIFIED, Division of Geological and Planetary Sciences | |||||||||
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| Issue or Number: | 22 | |||||||||
| DOI: | 10.1029/96GL03008 | |||||||||
| Record Number: | CaltechAUTHORS:20140718-140607725 | |||||||||
| Persistent URL: | https://resolver.caltech.edu/CaltechAUTHORS:20140718-140607725 | |||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | |||||||||
| ID Code: | 47339 | |||||||||
| Collection: | CaltechAUTHORS | |||||||||
| Deposited By: | Ruth Sustaita | |||||||||
| Deposited On: | 18 Jul 2014 21:57 | |||||||||
| Last Modified: | 10 Nov 2021 17:38 |
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