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Remote Sens. 2016, 8(2), 158; doi:10.3390/rs8020158

Evaluation of VIIRS and MODIS Thermal Emissive Band Calibration Stability Using Ground Target

1
Science Systems and Applications, Inc., 10210 Greenbelt Rd., Lanham, MD 20706, USA
2
Sciences and Exploration Directorate, NASA/GSFC, Greenbelt, MD 20771, USA
*
Author to whom correspondence should be addressed.
Academic Editors: Changyong Cao, Richard Muller and Prasad S. Thenkabail
Received: 2 November 2015 / Revised: 2 February 2016 / Accepted: 4 February 2016 / Published: 19 February 2016
(This article belongs to the Collection Visible Infrared Imaging Radiometers and Applications)
View Full-Text   |   Download PDF [6170 KB, uploaded 19 February 2016]   |  

Abstract

The S-NPP Visible Infrared Imaging Radiometer Suite (VIIRS) instrument, a polar orbiting Earth remote sensing instrument built using a strong MODIS background, employs a similarly designed on-board calibrating source—a V-grooved blackbody for the Thermal Emissive Bands (TEB). The central wavelengths of most VIIRS TEBs are very close to those of MODIS with the exception of the 10.7 µm channel. To ensure the long term continuity of climate data records derived using VIIRS and MODIS TEB, it is necessary to assess any systematic differences between the two instruments, including scenes with temperatures significantly lower than blackbody operating temperatures at approximately 290 K. Previous work performed by the MODIS Characterization Support Team (MCST) at NASA/GSFC used the frequent observations of the Dome Concordia site located in Antarctica to evaluate the calibration stability and consistency of Terra and Aqua MODIS over the mission lifetime. The near-surface temperature measurements from an automatic weather station (AWS) provide a direct reference useful for tracking the stability and determining the relative bias between the two MODIS instruments. In this study, the same technique is applied to the VIIRS TEB and the results are compared with those from the matched MODIS TEB. The results of this study show a small negative bias when comparing the matching VIIRS and Aqua MODIS TEB, implying a higher brightness temperature for S-VIIRS at the cold end. Statistically no significant drift is observed for VIIRS TEB performance over the first 3.5 years of the mission. View Full-Text
Keywords: VIIRS; MODIS; thermal emissive bands; Dome Concordia; calibration VIIRS; MODIS; thermal emissive bands; Dome Concordia; calibration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Madhavan, S.; Brinkmann, J.; Wenny, B.N.; Wu, A.; Xiong, X. Evaluation of VIIRS and MODIS Thermal Emissive Band Calibration Stability Using Ground Target. Remote Sens. 2016, 8, 158.

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