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30 December 2004 Geostationary Imaging Fabry-Perot Spectrometer (GIFS)
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Long-term measurements of the global distribution of clouds and the surface reflectance are needed to provide inputs to climatological models for global change studies. The Geostationary Imaging Fabry-Perot Spectrometer (GIFS) instrument is a next-generation satellite concept, to be deployed on a geostationary satellite for continuous hemispheric imaging of cloud properties, including cloud top pressure, optical depth, fraction, and surface reflectance. This is an ideal approach to make these cloud property measurements with desired spatial resolution, accuracy, and revisit time. It uses an innovative tunable imaging triple-etalon Fabry-Perot interferometer to obtain images of high-resolution spectral line shapes of two O2 B-band lines in the backscattered solar radiation. The GIFS remote sensing technique takes advantage of the pressure broadening information embedded in the absorption line shapes to better determine cloud properties, especially for those clouds below 5 km. We present a preliminary instrument design, including the general instrument requirements.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jeng-Hwa Yee, M. Frank Morgan, Robert DeMajistre, Elsayed R. Talaat, James F. Garten, William H. Swartz, and Wilbert R. Skinner "Geostationary Imaging Fabry-Perot Spectrometer (GIFS)", Proc. SPIE 5660, Instruments, Science, and Methods for Geospace and Planetary Remote Sensing, (30 December 2004);

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