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Remote Sens. 2016, 8(1), 72;

Inter-Comparison of S-NPP VIIRS and Aqua MODIS Thermal Emissive Bands Using Hyperspectral Infrared Sounder Measurements as a Transfer Reference

Science Systems and Applications, Inc., 10210 Greenbelt Rd., Lanham, MD 20706, USA
Sciences and Exploration Directorate, NASA/GSFC, Greenbelt, MD 20771, USA
Author to whom correspondence should be addressed.
Academic Editors: Changyong Cao, Magaly Koch and Prasad S. Thenkabail
Received: 26 October 2015 / Revised: 28 December 2015 / Accepted: 8 January 2016 / Published: 19 January 2016
(This article belongs to the Collection Visible Infrared Imaging Radiometers and Applications)
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This paper compares the calibration consistency of the spectrally-matched thermal emissive bands (TEB) between the Suomi National Polar-orbiting Partnership (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) and the Aqua Moderate Resolution Imaging Spectroradiometer (MODIS), using observations from their simultaneous nadir overpasses (SNO). Nearly-simultaneous hyperspectral measurements from the Aqua Atmospheric Infrared Sounder(AIRS) and the S-NPP Cross-track Infrared Sounder (CrIS) are used to account for existing spectral response differences between MODIS and VIIRS TEB. The comparison uses VIIRS Sensor Data Records (SDR) in MODIS five-minute granule format provided by the NASA Land Product and Evaluation and Test Element (PEATE) and Aqua MODIS Collection 6 Level 1 B (L1B) products. Each AIRS footprint of 13.5 km (or CrIS field of view of 14 km) is co-located with multiple MODIS (or VIIRS) pixels. The corresponding AIRS- and CrIS-simulated MODIS and VIIRS radiances are derived by convolutions based on sensor-dependent relative spectral response (RSR) functions. The VIIRS and MODIS TEB calibration consistency is evaluated and the two sensors agreed within 0.2 K in brightness temperature. Additional factors affecting the comparison such as geolocation and atmospheric water vapor content are also discussed in this paper. View Full-Text
Keywords: VIIRS; MODIS; AIRS; CrIS; thermal emissive bands; calibration VIIRS; MODIS; AIRS; CrIS; thermal emissive bands; calibration

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Li, Y.; Wu, A.; Xiong, X. Inter-Comparison of S-NPP VIIRS and Aqua MODIS Thermal Emissive Bands Using Hyperspectral Infrared Sounder Measurements as a Transfer Reference. Remote Sens. 2016, 8, 72.

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