Study on the impact of polar stratospheric clouds on high resolution mid-IR limb emission spectra

  • Höpfhner M
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Satellite observations of polar stratospheric clouds (PSCs) in the mid-infrared by high resolution limb emission spectrometers like the Michelson Interferometer for Passive Atmospheric Sounding have been simulated. For particles with radius >1 μm the scattered tropospheric radiance accounts for a significant part of the continuum signal and leads to absorption line features overlaid over the stratospheric emission spectrum. The scattered radiance shows a strong dependence on particle size up to about 7 μm radius with a maximum around 3-4 μm. The contribution of scattered radiation depends heavily on tropospheric cloud coverage and earth surface temperature. Distinction of PSCs of different composition is possible for small particles (

Author-supplied keywords

  • FTIR emissions spectroscopy
  • Limb sounding
  • Polar stratospheric clouds
  • Radiative transfer
  • Remote sensing
  • Scattering

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  • Michael Höpfhner

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