Sorry, you need to enable JavaScript to visit this website.

MCST Banner Image

Global Space-based Inter-Calibration System Reflective Solar Calibration Reference: From Aqua MODIS to S-NPP VIIRS

TitleGlobal Space-based Inter-Calibration System Reflective Solar Calibration Reference: From Aqua MODIS to S-NPP VIIRS
Publication TypePresentation
Year of Publication2016
AuthorsXiong, X., A. Angal, J. Butler, C. Cao, D. R. Doelling, A. Wu, and X. Wu
ProceedingsProc. of SPIE Earth Observing Missions and Sensors: Development, Implementation, and Characterization IV
MCST ConferenceProc. of SPIE Earth Observing Missions and Sensors: Development, Implementation, and Characterization IV
Volume9881
Abstract

The MODIS has successfully operated on-board the NASA’s EOS Terra and Aqua spacecraft for more than 16
and 14 years, respectively. MODIS instrument was designed with stringent calibration requirements and
comprehensive on-board calibration capability. In the reflective solar spectral region, Aqua MODIS has
performed better than Terra MODIS and, therefore, has been chosen by the Global Space-based Inter-
Calibration System (GSICS) operational community as the calibration reference sensor in cross-sensor
calibration and calibration inter-comparisons. For the same reason, it has also been used by a number of earth-
observing sensors as their calibration reference. Considering that Aqua MODIS has already operated for nearly
14 years, it is essential to transfer its calibration to a follow-on reference sensor with a similar calibration
capability and stable performance. The VIIRS is a follow-on instrument to MODIS and has many similar design
features as MODIS, including their on-board calibrators (OBC). As a result, VIIRS is an ideal candidate to
replace MODIS to serve as the future GSICS reference sensor. Since launch, the S-NPP VIIRS has already
operated for more than 4 years and its overall performance has been extensively characterized and demonstrated
to meet its overall design requirements. This paper provides an overview of Aqua MODIS and S-NPP VIIRS
reflective solar bands (RSB) calibration methodologies and strategies, traceability, and their on-orbit
performance. It describes and illustrates different methods and approaches that can be used to facilitate the
calibration reference transfer, including the use of desert and Antarctic sites, deep convective clouds (DCC),
and the lunar observations.

DOI10.1117/12.2224320