Overview of Suomi NPP VIIRS performance in the last 2.5 years

Changyong Cao; Slawomir Blonski; Wenhui Wang; Xi Shao; Tayoung Choi; Yan Bai; Xiaoxiong Xiong

doi:10.1117/12.2068991

19 November 2014 Overview of Suomi NPP VIIRS performance in the last 2.5 years

Changyong Cao, Slawomir Blonski, Wenhui Wang, Xi Shao, Tayoung Choi, Yan Bai, Xiaoxiong Xiong

Proceedings Volume 9264, Earth Observing Missions and Sensors: Development, Implementation, and Characterization III; 926402 (2014) https://doi.org/10.1117/12.2068991
Event: SPIE Asia-Pacific Remote Sensing, 2014, Beijing, China

Abstract

Since the successful launch of the Suomi NPP on October 28, 2011, the VIIRS instrument has performed well in general. This paper provides an overview of the evolution of the VIIRS instrument performance, major events experienced in the nearly three years since launch, and the ground processing system changes to account for various effects and discrepancies. The mirror degradation in the near-infrared bands due to prelaunch mirror contamination has been gradually leveling off, although the degradation in the solar diffuser continues. In the ground processing, many changes have been implemented in the operational code. This includes the stray-light correction for the Day/Night band, the automatic calibration for the reflective solar band, and corrections for several errors in the code, and resolving various discrepancies in the calibration equations and coefficients. The scientific community is generally satisfied with the quality of the VIIRS SDR data. However, there are remaining issues to be resolved through further research and development. These issues include meeting the more stringent requirement and desire for ocean color applications, better understanding of the polarization effects especially off-nadir, understanding and resolving inconsistencies between solar and lunar calibration. The Suomi NPP VIIRS SDR has been used for generating a variety of products with great success by worldwide users. Together with the follow-on instruments J1 and J2, VIIRS will be the primary data source for moderate resolution satellite observations in the next decades.

Citation Download Citation

Changyong Cao, Slawomir Blonski, Wenhui Wang, Xi Shao, Tayoung Choi, Yan Bai, and Xiaoxiong Xiong "Overview of Suomi NPP VIIRS performance in the last 2.5 years", Proc. SPIE 9264, Earth Observing Missions and Sensors: Development, Implementation, and Characterization III, 926402 (19 November 2014); https://doi.org/10.1117/12.2068991

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