Warming early Mars with carbon dioxide clouds that scatter infrared radiation.
Science (New York, N.Y.) 278:5341 (1997) 1273-1276
Abstract:
Geomorphic evidence that Mars was warm enough to support flowing water about 3.8 billion years ago presents a continuing enigma that cannot be explained by conventional greenhouse warming mechanisms. Model calculations show that the surface of early Mars could have been warmed through a scattering variant of the greenhouse effect, resulting from the ability of the carbon dioxide ice clouds to reflect the outgoing thermal radiation back to the surface. This process could also explain how Earth avoided an early irreversible glaciation and could extend the size of the habitable zone on extrasolar planets around stars.Lower-Tropospheric Heat Transport in the Pacific Storm Track
Journal of the Atmospheric Sciences American Meteorological Society 54:11 (1997) 1533-1543
A GCM climate database for Mars: For mission planning and for scientific studies
ADV SPACE RES 19:8 (1997) 1213-1222
Abstract:
The construction of a new database of statistics on the climate and environment of the Martian atmosphere is currently under way, with the support of the European Space Agency. The primary objectives of this database are to provide information for mission design specialists on the mean state and variability of the Martian environment in unprecedented detail, through the execution of a set of carefully validated simulations of the Martian atmospheric circulation using comprehensive numerical general circulation models. The formulation of the models used are outlined herein, noting especially new improvements in various schemes to parametrize important physical processes, and the scope of the database to be constructed is described. A novel approach towards the representation of large-scale variability in the output of the database using empirical eigenfunctions derived from statistical analyses of the numerical simulations, is also discussed. It is hoped that the resulting database will be of value for both scientific and engineering studies of Mars' atmosphere and near-surface environment. (C) 1997 COSPAR. Published by Elsevier Science Ltd.A laboratory study of baroclinic waves and turbulence in an internally heated rotating fluid annulus with sloping endwalls
JOURNAL OF FLUID MECHANICS 339 (1997) 173-198
Data assimilation with a Martian atmospheric GCM: An example using thermal data
ADV SPACE RES 19:8 (1997) 1267-1270