Sentinel-2A MSI and Landsat-8 OLI radiometric cross comparison over desert sites

The Sentinel-2A and Landsat-8 satellites carry on-board moderate resolution multispectral imagers for the purpose of documenting the Earth's changing surface. Though they are independently built and managed, users will certainly take advantage of the opportunity to have higher temporal coverage...

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Bibliographic Details
Published in:European journal of remote sensing 2018-01, Vol.51 (1), p.822-837
Main Authors: Barsi, Julia A., Alhammoud, Bahjat, Czapla-Myers, Jeffrey, Gascon, Ferran, Haque, Md. Obaidul, Kaewmanee, Morakot, Leigh, Larry, Markham, Brian L.
Format: Article
Language:English
Subjects:
Atmospheric models
Calibration
Data acquisition
Deserts
Earth surface
Landsat
Landsat satellites
MSI
OLI
radiometric calibration
Reflectance
Remote sensing
Satellites
Sentinel-2A
Spectral bands
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Summary:The Sentinel-2A and Landsat-8 satellites carry on-board moderate resolution multispectral imagers for the purpose of documenting the Earth's changing surface. Though they are independently built and managed, users will certainly take advantage of the opportunity to have higher temporal coverage by combining the datasets. Thus it is important for the radiometric and geometric calibration of the MultiSpectral Instrument (MSI) and the Operational Land Imager (OLI) to be compatible. Cross-calibration of MSI to OLI has been accomplished using multiple techniques involving the use of pseudo-invariant calibration sites (PICS) using direct comparisons as well as through use of PICS models predicting top-of-atmosphere reflectance. A team from the University of Arizona is acquiring field data under both instruments for vicarious calibration of the sensors. This paper shows that the work done to date by the Landsat and Sentinel-2 calibration teams has resulted in stable radiometric calibration for each instrument and consistency to ~2.5% between the instruments for all the spectral bands that the instruments have in common.
ISSN:2279-7254
2279-7254
DOI:10.1080/22797254.2018.1507613