Validation of NO<sub>2</sub> and NO from the Atmospheric Chemistry Experiment (ACE)
Author:
Kerzenmacher T.,Wolff M. A.,Strong K.,Dupuy E.,Walker K. A.,Amekudzi L. K.,Batchelor R. L.,Bernath P. F.,Berthet G.,Blumenstock T.,Boone C. D.,Bramstedt K.,Brogniez C.,Brohede S.,Burrows J. P.,Catoire V.,Dodion J.,Drummond J. R.,Dufour D. G.,Funke B.,Fussen D.,Goutail F.,Griffith D. W. T.,Haley C. S.,Hendrick F.,Höpfner M.,Huret N.,Jones N.,Kar J.,Kramer I.,Llewellyn E. J.,López-Puertas M.,Manney G.,McElroy C. T.,McLinden C. A.,Melo S.,Mikuteit S.,Murtagh D.,Nichitiu F.,Notholt J.,Nowlan C.,Piccolo C.,Pommereau J.-P.,Randall C.,Raspollini P.,Ridolfi M.,Richter A.,Schneider M.,Schrems O.,Silicani M.,Stiller G. P.,Taylor J.,Tétard C.,Toohey M.,Vanhellemont F.,Warneke T,Zawodny J. M.,Zou J.
Abstract
Abstract. Vertical profiles of NO2 and NO have been obtained from solar occultation measurements by the Atmospheric Chemistry Experiment (ACE), using an infrared Fourier Transform Spectrometer, ACE-FTS, and an ultraviolet-visible-near-infrared spectrometer, MAESTRO (Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation). In this paper, the quality of the ACE-FTS version 2.2 NO2 and NO and the MAESTRO version 1.2 NO2 data are assessed using other solar occultation measurements (HALOE, SAGE II, SAGE III, POAM III, SCIAMACHY), stellar occultation measurements (GOMOS), limb measurements (MIPAS, OSIRIS), nadir measurements (SCIAMACHY), balloon measurements (SPIRALE, SAOZ) and ground-based measurements (UV-VIS, FTIR). Time differences between the comparison measurements were reduced using either a tight coincidence criterion, or where possible, chemical box models. ACE-FTS NO2 and NO and the MAESTRO NO2 are generally consistent with the correlative data. The ACE-FTS NO2 VMRs agree with the satellite data sets to within about 20% between 25 and 40 km, and suggest a negative bias between 23 and 40 km of about \\textminus10%. In comparisons with HALOE, ACE-FTS NO VMRs typically agree to ±8% from 22 to 64 km and to +10% from 93 to 105 km. Partial column comparisons for NO2 show that there is fair agreement between the ACE instruments and the FTIRs, with a mean difference of +7.3% for ACE-FTS and +12.8% for MAESTRO.
Publisher
Copernicus GmbH
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