Validation of Aura Microwave Limb Sounder O-3 and CO observations in the upper troposphere and lower stratosphere

N. J. Livesey, Mark Filipiak, L. Froidevaux, W. G. Read, A. Lambert, M. L. Santee, J. H. Jiang, Hugh Pumphrey, J. W. Waters, R. E. Cofield, D. T. Cuddy, W. H. Daffer, B. J. Drouin, R. A. Fuller, R. F. Jarnot, Y. B. Jiang, B. W. Knosp, Q. B. Li, V. S. Perun, M. J. SchwartzW. V. Snyder, P. C. Stek, R. P. Thurstans, P. A. Wagner, M. Avery, E. V. Browell, J. -P. Cammas, L. E. Christensen, G. S. Diskin, R. -S. Gao, H. -J. Jost, M. Loewenstein, J. D. Lopez, P. Nedelec, G. B. Osterman, G. W. Sachse, C. R. Webster

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Global satellite observations of ozone and carbon monoxide from the Microwave Limb Sounder (MLS) on the EOS Aura spacecraft are discussed with emphasis on those observations in the 215-100 hPa region (the upper troposphere and lower stratosphere). The precision, resolution and accuracy of the data produced by the MLS "version 2.2'' processing algorithms are discussed and quantified. O-3 accuracy is estimated at similar to 40 ppbv + 5% (similar to 20 ppbv + 20% at 215 hPa) while the CO accuracy is estimated at similar to 30 ppbv + 30% for pressures of 147 hPa and less. Comparisons with expectations and other observations show good agreements for the O3 product, generally consistent with the systematic errors quoted above. In the case of CO, a persistent factor of similar to 2 high bias is seen at 215 hPa. However, the morphology is shown to be realistic, consistent with raw MLS radiance data, and useful for scientific study. The MLS CO data at higher altitudes are shown to be consistent with other observations.

Original languageEnglish
Article numberD15S02
Pages (from-to)-
Number of pages15
JournalJournal of Geophysical Research
Issue numberD15
Publication statusPublished - 27 Mar 2008

Keywords / Materials (for Non-textual outputs)

  • AIR


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