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AGU: Geophysical Research Letters

 

Index Terms

  • Atmospheric Composition and Structure: Aerosols and particles
  • Atmospheric Composition and Structure: Transmission and scattering of radiation
  • Atmospheric Composition and Structure: Instruments and techniques
  • Meteorology and Atmospheric Dynamics: Remote sensing

Abstract

GEOPHYSICAL RESEARCH LETTERS, VOL. 29, 1278, 4 PP., 2002
doi:10.1029/2001GL014443

Evidence of scattering of tropospheric radiation by PSCs in mid-IR limb emission spectra: MIPAS-B observations and KOPRA simulations

M. Höpfner

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

H. Oelhaf

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

G. Wetzel

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

F. Friedl-Vallon

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

A. Kleinert

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

A. Lengel

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

G. Maucher

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

H. Nordmeyer

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

N. Glatthor

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

G. Stiller

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

T. v. Clarmann

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

H. Fischer

Institut für Meteorologie und Klimaforschung, Forschungszentrum Karlsruhe, Germany

C. Kröger

Department of Atmospheric Science, University of Wyoming, Laramie, USA

T. Deshler

Department of Atmospheric Science, University of Wyoming, Laramie, USA

Polar stratospheric clouds (PSCs) were observed by the high resolution mid infrared Michelson Interferometer for Passive Atmospheric Sounding, Balloon borne version (MIPAS-B), on a flight from Kiruna/Sweden on January 11, 2001. Highly resolved spectral features in the limb measurements could only be explained by tropospheric radiation scattered into the line of sight by large PSC particles. Furthermore, model calculations showed that for PSCs with particles of radius ≥1 μm, a significant part of the broadband continuum radiance signal is due to scattering. Inclusion of scattering in the retrieval process resulted in reasonable values of otherwise largely overestimated PSC volume density profiles.

Published 30 April 2002.

Citation: Höpfner, M., et al. (2002), Evidence of scattering of tropospheric radiation by PSCs in mid-IR limb emission spectra: MIPAS-B observations and KOPRA simulations, Geophys. Res. Lett., 29(8), 1278, doi:10.1029/2001GL014443.

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