Search Publications

Spatially-resolved high-resolution spectroscopy of Venus 2. Variations of HDO, OCS, and SO ₂ at the cloud tops

Krasnopolsky, Vladimir A.

While CO, HCl, and HF, that were considered in the first part of this work, have distinct absorption lines in high-resolution spectra and were detected four decades ago, the lines of HDO, OCS, and SO ₂ are either very weak or blended by the telluric lines and have not been observed previously by ground-based infrared spectroscopy at the…

Venus night airglow: Ground-based detection of OH, observations of O ₂ emissions, and photochemical model

Krasnopolsky, Vladimir A.

Venus nightglow was observed at NASA IRTF using a high-resolution long-slit spectrograph CSHELL at LT = 21:30 and 4:00 on Venus. Variations of the O ₂ airglow at 1.27 µm and its rotational temperature are extracted from the observed spectra. The mean O ₂ nightglow is 0.57 MR at 21:30 at 35°S-35°N, and the temperature in…

Comparison study of magnetic flux ropes in the ionospheres of Venus, Mars and Titan

Russell, C. T.; Wei, H. Y.; Dougherty, M. K. +1 more

Magnetic flux ropes are created in the ionosphere of Venus and Mars during the interaction of the solar wind with their ionospheres and also at Titan during the interaction of the Saturnian magnetospheric plasma flow with Titan's ionosphere. The flux ropes at Venus and Mars were extensively studied from Pioneer Venus Orbiter and Mars Global Survey…

A bulk cloud parameterization in a Venus General Circulation Model

Read, Peter L.; Lewis, Stephen R.; Lee, Christopher

A condensing cloud parameterization is included in a super-rotating Venus General Circulation Model. A parameterization including condensation, evaporation and sedimentation of mono-modal sulfuric acid cloud particles is described. Saturation vapor pressure of sulfuric acid vapor is used to determine cloud formation through instantaneous condensat…