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Article

SI-Traceability and Measurement Uncertainty of the Atmospheric Infrared Sounder Version 5 Level 1B Radiances

1
Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
2
Millenium Engineering and Integration Company, Inc., Arlington, VA 22202, USA
3
Raytheon Company, Waltham, MA 02451, USA
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(8), 1338; https://doi.org/10.3390/rs12081338
Received: 23 March 2020 / Revised: 18 April 2020 / Accepted: 21 April 2020 / Published: 23 April 2020
The Atmospheric Infrared Sounder (AIRS) on the EOS Aqua Spacecraft was launched on 4 May 2002. The AIRS is designed to measure atmospheric temperature and water vapor profiles and has demonstrated exceptional radiometric and spectral accuracy and stability in orbit. The International System of Units (SI)-traceability of the derived radiances is achieved by transferring the calibration from the Large Area Blackbody (LABB) with SI traceable temperature sensors, to the On-Board Calibrator (OBC) blackbody during preflight testing. The AIRS views the OBC blackbody and four full aperture space views every scan. A recent analysis of pre-flight and on-board data has improved our understanding of the measurement uncertainty of the Version 5 AIRS L1B radiance product. For temperatures greater than 260 K, the measurement uncertainty is better than 250 mK 1-sigma for most channels. SI-traceability and quantification of the radiometric measurement uncertainty is critical to reducing biases in reanalysis products and radiative transfer models (RTMs) that use AIRS data, as well as establishing the suitability of AIRS as a benchmark for radiances established in the early 2000s. View Full-Text
Keywords: infrared; hyperspectral; satellite; radiometric; calibration; sounder; polarization; accuracy; uncertainty infrared; hyperspectral; satellite; radiometric; calibration; sounder; polarization; accuracy; uncertainty
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MDPI and ACS Style

Pagano, T.S.; Aumann, H.H.; Broberg, S.E.; Cañas, C.; Manning, E.M.; Overoye, K.O.; Wilson, R.C. SI-Traceability and Measurement Uncertainty of the Atmospheric Infrared Sounder Version 5 Level 1B Radiances. Remote Sens. 2020, 12, 1338. https://doi.org/10.3390/rs12081338

AMA Style

Pagano TS, Aumann HH, Broberg SE, Cañas C, Manning EM, Overoye KO, Wilson RC. SI-Traceability and Measurement Uncertainty of the Atmospheric Infrared Sounder Version 5 Level 1B Radiances. Remote Sensing. 2020; 12(8):1338. https://doi.org/10.3390/rs12081338

Chicago/Turabian Style

Pagano, Thomas S., Hartmut H. Aumann, Steven E. Broberg, Chase Cañas, Evan M. Manning, Kenneth O. Overoye, and Robert C. Wilson. 2020. "SI-Traceability and Measurement Uncertainty of the Atmospheric Infrared Sounder Version 5 Level 1B Radiances" Remote Sensing 12, no. 8: 1338. https://doi.org/10.3390/rs12081338

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