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Assessment of SNPP VIIRS VIS/NIR Radiometric Calibration Stability Using Aqua MODIS and Invariant Surface Targets

TitleAssessment of SNPP VIIRS VIS/NIR Radiometric Calibration Stability Using Aqua MODIS and Invariant Surface Targets
Publication TypeJournal Publication
Year of Publication2016
AuthorsWu, A., X. Xiong, C. Cao, and K. Chiang
JournalIEEE Transactions on Geoscience and Remote Sensing
Volume54
Issue5
Pagination2918-2924
Abstract

The first Visible Infrared Imaging Radiometer Suite
(VIIRS) is onboard the Suomi National Polar-orbiting Partnership
(SNPP) satellite. As a primary sensor, it collects imagery and ra-
diometric measurements of the land, atmosphere, cryosphere, and
oceans in the spectral regions from visible (VIS) to long-wave in-
frared. NASA’s National Polar-orbiting Partnership (NPP) VIIRS
Characterization Support Team has been actively involved in
the VIIRS radiometric and geometric calibration to support its
Science Team Principal Investigators for their independent quality
assessment of VIIRS Environmental Data Records. This paper
presents the performance assessment of the radiometric calibra-
tion stability of the VIIRS VIS and NIR spectral bands using
measurements from SNPP VIIRS and Aqua MODIS simultaneous
nadir overpasses and over the invariant surface targets at the
Libya-4 desert and Antarctic Dome Concordia snow sites. The
VIIRS sensor data records (SDRs) used in this paper are re-
processed by the NASA SNPP Land Product Evaluation and
Analysis Tool Element. This paper shows that the reprocessed
VIIRS SDRs have been consistently calibrated from the beginning
of the mission, and the calibration stability is similar to or better
than MODIS. Results from different approaches indicate that
the calibrations of the VIIRS VIS and NIR spectral bands are
maintained to be stable to within 1% over the first three-year
mission. The absolute calibration differences between VIIRS and
MODIS are within 2%, with an exception for the 0.865-μm band,
after correction of their spectral response differences.

DOI10.1109/TGRS.2015.2508379