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22 December 2006 Techniques used in improving the radiance validation of Atmospheric Infrared Sounder (AIRS) observations with the Scanning High- Resolution Interferometer Sounder (S-HIS)
Kenneth H. Vinson, David C. Tobin, Henry E. Revercomb, Robert O. Knuteson, Fred A. Best, William L. Smith, Nick N. Ciganovich, Steven Dutcher, Scott D. Ellington, Raymond K. Garcia, H. Benjamin Howell, Daniel D. LaPorte, Joe K. Taylor, Paul van Delst, Mark W. Werner
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Proceedings Volume 6405, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques, and Applications; 640505 (2006) https://doi.org/10.1117/12.693600
Event: SPIE Asia-Pacific Remote Sensing, 2006, Goa, India
Abstract
The ability to accurately validate high spectral resolution infrared radiance measurements from space using comparisons with a high altitude aircraft spectrometer has been successfully demonstrated (Tobin, et al. 2006). A comparison technique which accounts for the different viewing geometries and spectral characteristics of the two sensors was introduced, and accurate comparisons were made for AIRS channels throughout the infrared spectrum. Resulting brightness temperature differences were found to be 0.2 K or less for most channels. Continuing work on additional cases has shown some channels to have brightness temperature differences larger than 0.2 K. Atmospheric contribution from above the aircraft is a suspected factor in producing the larger differences. The contribution of upper atmosphere HNO3 and O3 are studied as contributors to the brightness temperature differences. Improved forward model calculations are used to understand and compensate for the above aircraft atmospheric contribution. Results of this effort to understand the observed temperature differences are presented. The methodology demonstrated for the NASA AIRS instrument is expected to be used in the validation of the CrIS sensor radiances from the operational NPP/NPOESS platforms and the IASI sensor radiances from the METOP platforms.
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Kenneth H. Vinson, David C. Tobin, Henry E. Revercomb, Robert O. Knuteson, Fred A. Best, William L. Smith, Nick N. Ciganovich, Steven Dutcher, Scott D. Ellington, Raymond K. Garcia, H. Benjamin Howell, Daniel D. LaPorte, Joe K. Taylor, Paul van Delst, and Mark W. Werner "Techniques used in improving the radiance validation of Atmospheric Infrared Sounder (AIRS) observations with the Scanning High- Resolution Interferometer Sounder (S-HIS)", Proc. SPIE 6405, Multispectral, Hyperspectral, and Ultraspectral Remote Sensing Technology, Techniques, and Applications, 640505 (22 December 2006); https://doi.org/10.1117/12.693600
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KEYWORDS
Detector arrays
Infrared radiation
Sensors
Spectral resolution
Atmospheric modeling
Mercury cadmium telluride
Spectroscopy
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