Intercomparison of NO column measurements during MAP/GLOBUS 1985 |
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Authors: | R. L. McKenzie W. A. Matthews Y. Kondo R. Zander Ph. Demoulin P. Fabian D. G. Murcray F. J. Murcray O. Lado-Bordowsky C. Camy-Peyret H. K. Roscoe J. A. Pyle R. D. McPeters |
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Affiliation: | (1) DSIR, PEL Lauder, Central Otago, New Zealand;(2) Research Institute of Atmospherics, Nagoya University, 442 Toyokawa, Japan;(3) Institut d'Astrophysique, Université de Liège, Belgium;(4) Max-Planck-Institut für Aeronomie, Katlenburg-Lindau, Federal Republic of Germany;(5) Physics Department, University of Denver, 80208, CO, U.S.A.;(6) Laboratoire de Physique Moleculaire et Atmosphérique, Paris, France;(7) Department of Atmospheric Physics, Clarendon Lab., Oxford, England;(8) Department of Physical Chemistry, University of Cambridge, England;(9) Atmospheric Chemistry and Dynamics Group, NASA, Goddard Space Flight Center, 20771 Greenbelt, MD, U.S.A. |
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Abstract: | Column measurements of nitric oxide were made using several techniques during the MAP/GLOBUS campaign in France in September 1985. The data sets are nearly co-located and simultaneous, therefore allowing a valid intercomparison of the various measurement methods. The range of altitudes sampled differs from instrument to instrument. This complicates the comparison because the data sets are to some extent complementary. The NO distributions apparently vary significantly from day to day, and possibly over shorter timescales. Changes in dynamics may be responsible for these variations. The results from the instruments which measure in the infrared and the ultraviolet are self-consistent, and show good agreement with photochemical predictions. On 19 September, when the intercomparison was made, the profile measured by the in-situ chemiluminescent instrument differed significantly from the predicted profile, and the measured columns were generally higher. |
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Keywords: | Nitric oxide intercomparison chemiluminescence infrared ultraviolet photochemical predictions GLOBUS |
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