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Occultation geometry under a spherical symmetry assumption leads to models described by the Abel integral equations. Analyzing general properties of the Abel transform, this work derives practical rules for discretization and for solution of the inverse problems, containing Abel-type integral equations. Two applications in remote sensing are considered: reconstruction of local densities from horizontal...
In this paper we examine methods for the selection of spectral channels using information theory. These methods take the information content of the measurements as a criterion. The optimal selection of spectral channels becomes especially important with the recent introduction of high spectral resolution satellite instruments for monitoring the atmosphere. The problem of optimal selection of spectral...
Stellar occultation instruments have high pointing accuracy and they follow point-like sources. These two features allow accurate measurements of the refractive angle in the limb viewing geometry. The determination of the stratospheric density and temperature profiles from the refractive-angle measurements by stellar occultation instruments is considered. The temperature reconstruction consists of...
GOMOS (Global Ozone Monitoring by Occultation of Stars) on board Envisat measures O3, NO2, NO3, neutral density, aerosols, H2O, and O2, in the stratosphere and mesosphere by detecting absorption of starlight in ultraviolet, visible and infrared wavelengths. During bright limb conditions GOMOS will also observe scattered solar radiation. GOMOS will deliver ozone concentration profiles at altitudes...
Stellar occultation technique provides global measurements of the atmospheric composition with a high vertical resolution. The main interest of the GOMOS (Global Ozone Monitoring by Occultation of Stars) instrument is to measure ozone density at 10–100 km. The correlations between the cross sections of ozone, neutral density and aerosols are rather strong in the UV/visible wavelength region, which...
We investigate the Madden–Julian Oscillation (MJO) signal in wintertime stratospheric ozone over the Tibetan Plateau and East Asia using the harmonized dataset of satellite ozone profiles. Two different MJO indices—the all-season Real-Time multivariate MJO index (RMM) and outgoing longwave radiation-based MJO index (OMI)—are used to compare the MJO-related ozone anomalies. The results show that there...
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