title: Retrieval of trace gases from aerosol-influenced infrared transmission spectra observed by low-spectral-resolution Fourier-transform spectrometers.
abstract: A method for the simultaneous retrieval of gas concentrations and an extinction spectrum of aerosols and polar stratospheric clouds from infrared transmission spectra observed in the solar occultation geometry is described. It is particularly suited to measurements by Fourier-transform spectrometers with relatively low spectral resolution (0.1-1 cm(-1)). The method does not require a priori assumptions on aerosol properties; it utilizes only the fact that the wave-number dependence of aerosol extinction is much weaker than that of gas absorption. In this method, an aerosol extinction spectrum is approximated by a straight line within a relatively wide spectral range defined as mediumwindow.
authors.affiliation: Environmental Systems Department, Fujitsu FIP Corporation, 2-45 Aomi, Koto-ku, Tokyo 135-8686, Japan. uemura@ilas2.nies.go.jp
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Uemura
authors.forename: Satoshi
authors.initials: S
authors.lastname: Kuriki
authors.forename: Koji
authors.initials: K
authors.lastname: Nobuta
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Yokota
authors.forename: Hideaki
authors.initials: H
authors.lastname: Nakajima
authors.forename: Takafumi
authors.initials: T
authors.lastname: Sugita
authors.forename: Yasuhiro
authors.initials: Y
authors.lastname: Sasano