Title :
Calibration comparison between SCIAMACHY and MERIS onboard ENVISAT
Author :
Acarreta, Juan R. ; Stammes, Piet
Author_Institution :
Climate Res. & Seismology Dept., R. Netherlands Meteorological Inst., De Bilt, Netherlands
Abstract :
We present a comparison of the Scanning Imaging Absorption Spectrometer for Atmospheric Chartography (SCIAMACHY) and the Medium Resolution Imaging Spectrometer (MERIS) reflectance calibrations at wavelengths between 442 and 885 nm. Results show that SCIAMACHY underestimates the reflectance by ∼13% at 442 nm reaching up to ∼21% at 885 nm as compared to MERIS. We also find a small nonlinear effect for the lowest reflectance. This effect is more evident for pixels over ocean than over land.
Keywords :
atmospheric light propagation; atmospheric measuring apparatus; calibration; reflectivity; remote sensing; 442 to 885 nm; ENVISAT; MERIS; Medium Resolution Imaging Spectrometer; SCIAMACHY; Scanning Imaging Absorption Spectrometer for Atmospheric Chartography; nonlinear effect; reflectance calibrations; Absorption; Atmospheric waves; Calibration; Cameras; Instruments; MERIS; Orbits; Reflectivity; Satellites; Spatial resolution;
Journal_Title :
Geoscience and Remote Sensing Letters, IEEE
DOI :
10.1109/LGRS.2004.838348
