Atmos. Chem. Phys. Discuss., 8, 2513-2656, 2008
www.atmos-chem-phys-discuss.net/8/2513/2008/
doi:10.5194/acpd-8-2513-2008
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Review Status
This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Validation of ozone measurements from the Atmospheric Chemistry Experiment (ACE)
E. Dupuy1, K. A. Walker1,2, J. Kar2, C. D. Boone1, C. T. McElroy2,3, P. F. Bernath1,4, J. R. Drummond2,5, R. Skelton1, S. D. McLeod1, R. C. Hughes1, C. R. Nowlan2, D. G. Dufour6, J. Zou2, F. Nichitiu2, K. Strong2, P. Baron7, R. M. Bevilacqua8, T. Blumenstock9, G. E. Bodeker10, T. Borsdorff11, A. E. Bourassa12, H. Bovensmann13, I. S. Boyd14, A. Bracher13, C. Brogniez15, J. P. Burrows13, V. Catoire16, S. Ceccherini17, S. Chabrillat18, T. Christensen19, M. T. Coffey20, U. Cortesi17, J. Davies3, C. De Clercq18, D. A. Degenstein12, M. De Mazière18, P. Demoulin21, J. Dodion18, B. Firanski22, H. Fischer9, G. Forbes23, L. Froidevaux24, D. Fussen18, P. Gerard18, S. Godin-Beekman25, F. Goutail26, J. Granville18, D. Griffith27, C. S. Haley28, J. W. Hannigan20, M. Höpfner9, J. J. Jin29, A. Jones30, N. B. Jones27, K. Jucks31, A. Kagawa7,32, Y. Kasai7, T. E. Kerzenmacher2, A. Kleinböhl13,24, A. R. Klekociuk33, I. Kramer9, H. Küllmann13, J. Kuttippurath13,25, E. Kyrölä34, J.-C. Lambert18, N. J. Livesey24, E. J. Llewellyn12, N. D. Lloyd12, E. Mahieu21, G. L. Manney24,35, B. T. Marshall36, J. C. McConnell29, M. P. McCormick37, I. S. McDermid38, M. McHugh36, C. A. McLinden3, J. Mellqvist30, K. Mizutani7, Y. Murayama7, D. P. Murtagh30, H. Oelhaf9, A. Parrish39, S. V. Petelina12,40, C. Piccolo41, J.-P. Pommereau26, C. E. Randall42, C. Robert16, C. Roth12, M. Schneider9, C. Senten18, T. Steck9, A. Strandberg30, K. B. Strawbridge22, R. Sussmann11, D. P. J. Swart43, D. W. Tarasick3, J. R. Taylor2, C. Tétard15, L. W. Thomason37, A. M. Thompson44, M. B. Tully45, J. Urban30, F. Vanhellemont18, T. von Clarmann9, P. von der Gathen46, C. von Savigny13, J. W. Waters24, J. C. Witte47,48, M. Wolff2, and J. M. Zawodny37
1Department of Chemistry, University of Waterloo, Waterloo, ON, Canada
2Department of Physics, University of Toronto, Toronto, ON, Canada
3Environment Canada, Downsview, ON, Canada
4Department of Chemistry, University of York, Heslington, York, UK
5Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Canada
6Picomole Instruments Inc., Edmonton, AB, Canada
7National Institute of Information and Communications Technology (NICT), Koganei, Tokyo, Japan
8Naval Research Laboratory, Washington, D.C., USA
9Institut für Meteorologie und Klimaforschung (IMK), Forschungszentrum Karlsruhe (FZK) and Universität Karlsruhe, Karlsruhe, Germany
10National Institute of Water and Atmospheric Research, Lauder, New Zealand
11Institut für Meteorologie und Klimaforschung Atmosphärische Umweltforschung (IMK-IFU), Forschungszentrum Karlsruhe, Garmisch-Partenkirchen, Germany
12Institute of Space and Atmospheric Studies, University of Saskatchewan, Saskatoon, SK, Canada
13Institut für Umweltphysik (IUP), Universität Bremen, Bremen, Germany
14NIWA – Environmental Research Institute, University of Massachusetts, Amherst, MA, USA
15Laboratoire d'Optique Atmosphérique, CNRS – Université des sciences et technologies de Lille, Villeneuve d'Ascq, France
16Laboratoire de Physique et Chimie de l'Environnement, CNRS – Université d'Orléans, Orléans, France
17Instituto di Fisica Applicata ''N. Carrara'' (IFAC) del Consiglio Nazionale delle Ricerche (CNR), Sesto Fiorentino, Italy
18Institut d'Aéronomie Spatiale de Belgique (BIRA-IASB), Bruxelles, Belgium
19Danish Climate Centre, Danish Meteorological Institute, Copenhagen, Denmark
20Earth and Sun Systems Laboratory (ESSL), National Center for Atmospheric Research (NCAR), Boulder, CO, USA
21Institut d'Astrophysique et de Géophysique, Université de Liège, Liège, Belgium
22Science and Technology Branch, Environment Canada, Centre For Atmospheric Research Experiments, Egbert, ON, Canada
23Environment Canada Sable Island, Dartmouth, Canada
24Jet Propulsion Laboratory (JPL), California Institute of Technology, Pasadena, CA, USA
25CNRS – Service d'Aéronomie (SA), Université Pierre et Marie Curie (UPMC) Paris VI, Paris, France
26CNRS – Service d'Aéronomie (SA), Verrières-le-Buisson, France
27School of Chemistry, University of Wollongong, Wollongong, Australia
28Centre for Research in Earth and Space Science, York University, Toronto, ON, Canada
29Department of Earth and Space Science and Engineering, York University, Toronto, ON, Canada
30Department of Radio and Space Science, Chalmers University of Technology, Göteborg, Sweden
31Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USA
32Fujitsu FIP Corporation, Koto, Tokyo, Japan
33Ice, Ocean, Atmosphere and Climate (IOAC) Program, Australian Antarctic Division, Kingston, Australia
34Earth Observation, Finnish Meteorological Institute, Helsinki, Finland
35New Mexico Institute of Mining and Technology, Socorro, NM, USA
36GATS, Inc., Newport News, VA, USA
37NASA Langley Research Center, Atmospheric Sciences Division, Hampton, VA, USA
38Jet Propulsion Laboratory, Table Mountain Facility, Wrightwood, CA, USA
39Department of Astronomy, University of Massachusetts, Amherst, MA, USA
40Department of Physics, La Trobe University, Victoria, Australia
41Atmospheric, Oceanic and Planetary Physics, Oxford University, UK
42Laboratory for Atmospheric and Space Physics, University of Colorado, Boulder, CO, USA
43National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
44Department of Meteorology, Pennsylvania State University, University Park, PA, USA
45Atmosphere Watch Section, Bureau of Meteorology, Melboune, Vic, Australia
46Alfred Wegener Institute for Polar and Marine Research, Research Unit Potsdam, Germany
47Science Systems and Applications, Inc., Lanham, MD, USA
48NASA Goddard Space Flight Center (GSFC), Greenbelt, MD, USA

Abstract. This paper presents extensive validation analyses of ozone observations from the Atmospheric Chemistry Experiment (ACE) satellite instruments: the ACE Fourier Transform Spectrometer (ACE-FTS) and the Measurement of Aerosol Extinction in the Stratosphere and Troposphere Retrieved by Occultation (ACE-MAESTRO) instrument. The ACE satellite instruments operate in the mid-infrared and ultraviolet-visible-near-infrared spectral regions using the solar occultation technique. In order to continue the long-standing record of solar occultation measurements from space, a detailed quality assessment is required to evaluate the ACE data and validate their use for scientific purposes. Here we compare the latest ozone data products from ACE-FTS and ACE-MAESTRO with coincident observations from satellite-borne, airborne, balloon-borne and ground-based instruments, by analysing volume mixing ratio profiles and partial column densities. The ACE-FTS version 2.2 Ozone Update product reports more ozone than most correlative measurements from the upper troposphere to the lower mesosphere. At altitude levels from 16 to 44 km, the mean differences range generally between 0 and +10% with a slight but systematic positive bias (typically +5%). At higher altitudes (45–60 km), the ACE-FTS ozone amounts are significantly larger than those of the comparison instruments by up to ~40% (typically +20%). For the ACE-MAESTRO version 1.2 ozone data product, agreement within ±10% (generally better than ±5%) is found between 18 and 40 km for the sunrise and sunset measurements. At higher altitudes (45–55 km), systematic biases of opposite sign are found between the ACE-MAESTRO sunrise and sunset observations. While ozone amounts derived from the ACE-MAESTRO sunrise occultation data are often smaller than the coincident observations (by as much as −10%), the sunset occultation profiles for ACE-MAESTRO show results that are qualitatively similar to ACE-FTS and indicate a large positive bias (+10 to +30%) in this altitude range. In contrast, there is no significant difference in bias found for the ACE-FTS sunrise and sunset measurements. These systematic effects in the ozone profiles retrieved from the measurements of ACE-FTS and ACE-MAESTRO are being investigated. This work shows that the ACE instruments provide reliable, high quality measurements from the tropopause to the upper stratosphere and can be used with confidence in this vertical domain.

Citation: Dupuy, E., Walker, K. A., Kar, J., Boone, C. D., McElroy, C. T., Bernath, P. F., Drummond, J. R., Skelton, R., McLeod, S. D., Hughes, R. C., Nowlan, C. R., Dufour, D. G., Zou, J., Nichitiu, F., Strong, K., Baron, P., Bevilacqua, R. M., Blumenstock, T., Bodeker, G. E., Borsdorff, T., Bourassa, A. E., Bovensmann, H., Boyd, I. S., Bracher, A., Brogniez, C., Burrows, J. P., Catoire, V., Ceccherini, S., Chabrillat, S., Christensen, T., Coffey, M. T., Cortesi, U., Davies, J., De Clercq, C., Degenstein, D. A., De Mazière, M., Demoulin, P., Dodion, J., Firanski, B., Fischer, H., Forbes, G., Froidevaux, L., Fussen, D., Gerard, P., Godin-Beekman, S., Goutail, F., Granville, J., Griffith, D., Haley, C. S., Hannigan, J. W., Höpfner, M., Jin, J. J., Jones, A., Jones, N. B., Jucks, K., Kagawa, A., Kasai, Y., Kerzenmacher, T. E., Kleinböhl, A., Klekociuk, A. R., Kramer, I., Küllmann, H., Kuttippurath, J., Kyrölä, E., Lambert, J.-C., Livesey, N. J., Llewellyn, E. J., Lloyd, N. D., Mahieu, E., Manney, G. L., Marshall, B. T., McConnell, J. C., McCormick, M. P., McDermid, I. S., McHugh, M., McLinden, C. A., Mellqvist, J., Mizutani, K., Murayama, Y., Murtagh, D. P., Oelhaf, H., Parrish, A., Petelina, S. V., Piccolo, C., Pommereau, J.-P., Randall, C. E., Robert, C., Roth, C., Schneider, M., Senten, C., Steck, T., Strandberg, A., Strawbridge, K. B., Sussmann, R., Swart, D. P. J., Tarasick, D. W., Taylor, J. R., Tétard, C., Thomason, L. W., Thompson, A. M., Tully, M. B., Urban, J., Vanhellemont, F., von Clarmann, T., von der Gathen, P., von Savigny, C., Waters, J. W., Witte, J. C., Wolff, M., and Zawodny, J. M.: Validation of ozone measurements from the Atmospheric Chemistry Experiment (ACE), Atmos. Chem. Phys. Discuss., 8, 2513-2656, doi:10.5194/acpd-8-2513-2008, 2008.
 
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