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Validation of Aura Microwave Limb Sounder Ozone by ozonesonde and lidar measurements

Y. B. Jiang 1 L. Froidevaux 1 A. Lambert 1 N. J. Livesey 1 W. G. Read 1 J. W. Waters 1 B. Bojkov 2 T. Leblanc 1 I. S. Mcdermid 1 Sophie Godin-Beekmann 3 M. J. Filipiak 4 R. S. Harwood 4 R.A. Fuller 1 W. H. Daffer 1 B. J. Drouin 1 R. E. Cofield 1 D. T. Cuddy 1 R. F. Jarnot 1 B. W. Knosp 1 V. S. Perun 1 M. J. Schwartz 1 W. V. Snyder 1 P. C. Stek 1 R. P. Thurstans 1 P. A. Wagner 1 M. Allaart 5 S. B. Andersen 6 G. Bodeker 7 B. Calpini 8 H. Claude 9 G. Coetzee 10 J. Davies 11 H. de Backer 12 H. Dier 13 M. Fujiwara 14 B. Johnson 15 H. Kelder 5 N. P. Leme 16 G. König-Langlo E. Kyro 17 G. Laneve 18 L. S. Fook 19 J. Merrill 20 G. Morris 21 M. Newchurch 22 S. Oltmans 15 M. C. Parrondos 23 Françoise Posny 24 F. Schmidlin 2 P. Skrivankova 25 R. Stübi 8 D. Tarasick 11 A. Thompson 26 V. Thouret 27 P. Viatte 8 H. Vömel 28 P. von der Gathen M. Yela 23 G. Zablocki 29
Abstract : We present validation studies of MLS version 2.2 upper tropospheric and stratospheric ozone profiles using ozonesonde and lidar data as well as climatological data. Ozone measurements from over 60 ozonesonde stations worldwide and three lidar stations are compared with coincident MLS data. The MLS ozone stratospheric data between 150 and 3 hPa agree well with ozonesonde measurements, within 8% for the global average. MLS values at 215 hPa are biased high compared to ozonesondes by Å`20% at middle to high latitude, although there is a lot of variability in this altitude region. Comparisons between MLS and ground-based lidar measurements from Mauna Loa, Hawaii, from the Table Mountain Facility, California, and from the Observatoire de Haute-Provence, France, give very good agreement, within Å`5%, for the stratospheric values. The comparisons between MLS and the Table Mountain Facility tropospheric ozone lidar show that MLS data are biased high by Å`30% at 215 hPa, consistent with that indicated by the ozonesonde data. We obtain better global average agreement between MLS and ozonesonde partial column values down to 215 hPa, although the average MLS values at low to middle latitudes are higher than the ozonesonde values by up to a few percent. MLS v2.2 ozone data agree better than the MLS v1.5 data with ozonesonde and lidar measurements. MLS tropical data show the wave one longitudinal pattern in the upper troposphere, with similarities to the average distribution from ozonesondes. High upper tropospheric ozone values are also observed by MLS in the tropical Pacific from June to November.
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Y. B. Jiang, L. Froidevaux, A. Lambert, N. J. Livesey, W. G. Read, et al.. Validation of Aura Microwave Limb Sounder Ozone by ozonesonde and lidar measurements. Journal of Geophysical Research: Atmospheres, American Geophysical Union, 2007, 112 (D24), pp.D24S34. ⟨10.1029/2007JD008776⟩. ⟨hal-00199098⟩

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