Validation of Aura Microwave Limb Sounder O3 and CO observations in the upper troposphere and lower stratosphere

N. J. Livesey; M. J. Filipiak; L. Froidevaux; W. G. Read; A. Lambert; M. L. Santee; J. H. Jiang; H. C. 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. Schwartz; W. 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; R. C. Webster

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DOI: 10.1029/2007JD008805

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Journal of Geophysical Research Atmospheres 113, D15 (2008) D15S02

Validation of Aura Microwave Limb Sounder O3 and CO observations in the upper troposphere and lower stratosphere

N. J. Livesey ¹, M. J. Filipiak ², L. Froidevaux ¹, W. G. Read ¹, A. Lambert ¹, M. L. Santee ¹, J. H. Jiang ¹, H. C. Pumphrey ², J. W. Waters ¹, R.E. Cofield ¹, D. T. Cuddy ¹, W. H. Daffer ¹, B. J. Drouin ¹, R. A. Fuller ¹, R. F. Jarnot ¹, Y. B. Jiang ¹, B. W. Knosp ¹, Q. B. Li 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. Avery ³, E.-V. Browell ³, J. P. Cammas ⁴, L. E. Christensen ¹, G. S. Diskin ³, R. S. Gao ⁵, H. J. Jost ⁶, M. Loewenstein ⁷, J.D. Lopez ⁷, P. Nedelec ⁴, G. B. Osterman ¹, G. W. Sachse ³, R. C. Webster ¹

(2008)

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. O3 accuracy is estimated at ~40 ppbv +5% (~20 ppbv +20% at 215 hPa) while the CO accuracy is estimated at ~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 ~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.

1:	Jet Propulsion Laboratory

	California Institute of Technology

2:	School of GeoSciences

	School of GeoSciences

3:	NASA Langley Research Center

	Chemistry and Dynamics Branch

4:	Laboratoire d'aérologie (LA)

	CNRS : UMR5560 – Observatoire Midi-Pyrénées – INSU – Université Paul Sabatier [UPS] - Toulouse III

5:	Chemical Sciences Division

	Earth System Research Laboratory

6:	Novawave Technologies

	Novawave Technologies

7:	NASA Ames Research Center (NASA - ARC)

	NASA

Subject

Physics/Physics/Atmospheric and Oceanic Physics

Keyword(s): tropospheric composition – microwave – remote sounding.


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Submitted on: Thursday, 3 February 2011 09:34:38
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