Assessment of VIIRS radiometric performance using vicarious calibration sites

Sirish Uprety; Changyong Cao; Slawomir Blonski; Wenhui Wang

doi:10.1117/12.2061855

26 September 2014 Assessment of VIIRS radiometric performance using vicarious calibration sites

Sirish Uprety, Changyong Cao, Slawomir Blonski, Wenhui Wang

Proceedings Volume 9218, Earth Observing Systems XIX; 92180I (2014) https://doi.org/10.1117/12.2061855
Event: SPIE Optical Engineering + Applications, 2014, San Diego, California, United States

Abstract

Radiometric performance of satellite instruments needs to be regularly monitored to determine if there is any drift in the instrument response over time despite the calibration with the best effort. If a drift occurs, it needs to be characterized in order to keep the radiometric accuracy and stability well within the specification. Instrument gain change over time can be validated independently using many techniques such as using stable earth targets (desert, ocean, snow sites etc), inter-comparison with other well calibrated radiometers (using SNO, SNO-x), deep convective clouds (DCC), lunar observations or other methods. This study focus on using vicarious calibration sites for the assessment of radiometric performance of Suomi National Polar-Orbiting Partnership (S-NPP) Visible Infrared Imaging Radiometer Suite (VIIRS) reflective solar bands. The calibration stability is primarily analyzed by developing the top-of-atmosphere (TOA) reflectance time series over these sites. In addition, the radiometric bias relative to AQUA MODIS is estimated over these calibration sites and analyzed. The radiometric bias is quantified in terms of observed and spectral bias. The spectral characterization and bias analysis will be performed using hyperspectral measurements and radiative transfer models such as MODTRAN.

Citation Download Citation

Sirish Uprety, Changyong Cao, Slawomir Blonski, and Wenhui Wang "Assessment of VIIRS radiometric performance using vicarious calibration sites", Proc. SPIE 9218, Earth Observing Systems XIX, 92180I (26 September 2014); https://doi.org/10.1117/12.2061855

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available