Abstract
Satellite visible imagery is intuitive in interpretation because visible remote sensing is the way by which human eyes observe the surrounding world. Our eyes are an optical device with a set of overlapping spectral filters that help us make sense out of the world through “colors”. RGB-composite satellite images visualize the entire earth that would be seen if we could fly out of the planet. Satellite visible/infrared imagers, however, are not designed just to mimic human vision. In the context of meteorological applications, the primary purposes include the quantitative evaluation of the cloud physical properties such as cloud optical depth and effective radius. This chapter is devoted to a review of the methodologies of visible/near-infrared cloud measurements from satellites with focus on their theoretical background. The chapter begins with the theory of scattering radiative transfer without thermal emission, followed by simulated infrared spectra to demonstrate the impacts of clouds on satellite measurements.
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Notes
- 1.
The Thomson scattering refers to the scattering by free electrons, while the Rayleigh scattering is brought about by bound electrons in an atom or a molecule. The Thomson and Rayleigh scatterings, although different in \(\sigma _{s,\nu }\), share the identical phase function.
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Masunaga, H. (2022). Visible/Near-Infrared Imaging. In: Satellite Measurements of Clouds and Precipitation. Springer Remote Sensing/Photogrammetry. Springer, Singapore. https://doi.org/10.1007/978-981-19-2243-5_8
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