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Proceedings Paper

Validation of Atmospheric Infrared Sounder (AIRS) temperature, water vapor, and ozone retrievals with matched radiosonde and ozonesonde measurements and forecasts
Author(s): Murty Divakarla; Christopher Barnet; Mitchell Goldberg; Eric Maddy; Walter Wolf; Lawrence Flynn; Xiaozhen Xiong; Jennifer Wei; Lihang Zhou; Xingpin Liu
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Paper Abstract

An evaluation of the temperature, water vapor, and ozone profile retrievals from the AIRS data is performed with more than three years of collocated radiosondes (RAOBs) and ozonesonde (O3SND) measurements. The Aqua-AIRS version 4.0 retrievals, global RAOB and O3SND measurements, forecast data from the NCEP_GFS, ECMWF, and the NOAA- 16 ATOVS retrievals are used in this validation and relative performance assessment. The results of the inter-comparison of AIRS temperature, water vapor and ozone retrievals reveal very good agreement with the measurements from RAOBs and O3SND s. The temperature RMS difference is close to the expected product goal accuracies, viz. 1oK in 1 km layers for the temperature and close to 15% in 2-km layers for the water vapor in the troposphere. The AIRS temperature retrieval bias is a little larger than the biases shown by the ATOVS, NCEP_GFS, and ECMWF forecasts. With respect to the ozone profile retrieval, the retrieval bias and RMS difference with O3SNDs is less than 5% and 20% respectively for the stratosphere. The total ozone from the AIRS retrievals matches very well with the Dobson/Brewer station measurements with a bias less than 2%. Overall, the analysis performed in this paper show a remarkable degree of confidence in the AIRS retrievals.

Paper Details

Date Published: 22 December 2006
PDF: 12 pages
Proc. SPIE 6405, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques, and Applications, 640503 (22 December 2006); doi: 10.1117/12.694116
Show Author Affiliations
Murty Divakarla, Science Applications International Corp. (United States)
Christopher Barnet, National Oceanic and Atmospheric Administration (United States)
Mitchell Goldberg, National Oceanic and Atmospheric Administration (United States)
Eric Maddy, QSS Group, Inc. (United States)
Walter Wolf, QSS Group, Inc. (United States)
Lawrence Flynn, National Oceanic and Atmospheric Administration (United States)
Xiaozhen Xiong, QSS Group, Inc. (United States)
Jennifer Wei, QSS Group, Inc. (United States)
Lihang Zhou, QSS Group, Inc. (United States)
Xingpin Liu, QSS Group, Inc. (United States)


Published in SPIE Proceedings Vol. 6405:
Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques, and Applications
William L. Smith; Allen M. Larar; Tadao Aoki; Ram Rattan, Editor(s)

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