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Measurements of NO(x) over the eastern Pacific Ocean and southwestern United States during the spring 1984 NASA GTE aircraft programMeasurements of NO, NO(x) (NO + NO2), O3, and CO are presented from seven aircraft flights made over the eastern Pacific Ocean and the southwestern United States in spring of 1984. The sampling region was characterized by large- and small-scale variability for all of the measurements, likely as a result of vigorous synoptic scale meteorology and the influence of tropopause folds. Median values for NO, NO(x), O3, and CO from the flights made over the ocean in the region of 5.8-7.6 km were 10 parts per trillion by volume (pptv), 32 pptv, 46 parts per billion by volume (ppbv), and 120 ppbv, respectively. Corresponding values from two flights made over the continent at similar altitudes were 16 pptv, 38 pptv, 42 ppbv, and 111 ppbv. There was a strong tendency for NO or NO(x) to be correlated positively with O3 and to be anticorrelated with dew-point/frost-point measurements. No significant overall correlation occurred between NO(x) and CO for the ocean data. The variability of NO(x) was such that regions of net destruction and regions of net production of O(3) were sampled both over the ocean and over the continent. However, in the middle free troposphere over the ocean, net O(3) destruction was predominant.
Document ID
19890050545
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ridley, B. A.
(National Center for Atmospheric Research Boulder, CO, United States)
Carroll, M. A.
(NOAA, Aeronomy Laboratory, Boulder CO, United States)
Dunlap, D. D.
(National Center for Atmospheric Research Boulder, CO, United States)
Trainer, M.
(NOAA, Aeronomy Laboratory; Cooperative Institute for Research in Environmental Sciences, Boulder CO, United States)
Sachse, G. W.
(National Center for Atmospheric Research Boulder, CO, United States)
Gregory, G. L.
(NASA Langley Research Center Hampton, VA, United States)
Condon, E. P.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
August 14, 2013
Publication Date
April 20, 1989
Publication Information
Publication: Journal of Geophysical Research
Volume: 94
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
89A37916
Distribution Limits
Public
Copyright
Other

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