Intercomparison of remote measurements of stratospheric NO and NO2 |
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| Authors: | H K Roscoe B J Kerridge S Pollitt N Louisnard J M Flaud C Camy-Peyret C Alamichel J-P Pommereau T Ogawa N Iwagami M T Coffey W Mankin W F J Evans C T McElroy J Kerr |
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| Affiliation: | (1) Department of Atmospheric Physics, Clarendon Lab, Parks Rd, OX1 3PU Oxford, UK;(2) National Physical Laboratory, TW11 0LW Teddington, Middx, UK;(3) ONERA-BP2, 92322 Chatillon Cedex, France;(4) CNRS, Univ. de Paris-Sud, 91405 Orsay, France;(5) Service d'Aeronomie du CNRS, BPS, 91370 Verrieres-le-Buisson, France;(6) Geophys. Res. Lab, Univ. of Tokyo, Japan;(7) NCAR, Box 3000, 80307 Boulder, Col, USA;(8) AES, 4702 Dufferin St, M3H 5T4, Ontario, Canada;(9) Present address: RAL, Chilton, OX11 Didcot, Oxon;(10) Present address: Division of Space Sciences, DU, 80208 Denver, Col, USA |
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| Abstract: | During the 1982 and 1983 Balloon Intercomparison Campaigns, the vertical profile of stratospheric NO2 was measured remotely by nine instruments and that of NO by two. Total overhead columns were measured by two more instruments. Between 30 and 35km, where measurements overlapped, agreement between NO profiles was within ±30%, which is better than the accuracies claimed by the experimenters. Between 35 and 40km there was similarly good agreement between NO2 profiles, but below 30km, differences of greater than a factor three were found. In the second Campaign, NO2 values from most instruments agreed within their quoted errors, except that the Oxford radiometer gave much lower values; but the first Campaign and the column measurements show a more uniform spread of results.These differences below 30km could not be resolved, but new laboratory measurements are planned which should do so. |
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| Keywords: | NO NO2 intercomparison remote balloon stratosphere |
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