Evolution of self-gravitating magnetized disks. II. Interaction between magnetohydrodynamic turbulence and gravitational instabilities

ASTROPHYSICAL JOURNAL 616:1 (2004) 364-375

Authors:

S Fromang, SA Balbus, C Terquem, JP De Villiers

Nonconservation of Ertel potential vorticity in hydrogen atmospheres

JOURNAL OF THE ATMOSPHERIC SCIENCES 61:15 (2004) 1953-1965

Authors:

PJ Gierasch, BJ Conrath, PL Read

On the eccentricities of the extrasolar planets

EXTRASOLAR PLANETS: TODAY AND TOMORROW 321 (2004) 379-392

Authors:

JCB Papaloizou, RP Nelson, C Terquem

Predicting weather conditions and climate for Mars expeditions

SCI TECH 107 (2004) 3-21

Authors:

PL Read, SR Lewis, SJ Bingham, CE Newman

Abstract:

Weather and climatic conditions are among the most important factors to be taken into account when planning expeditions to remote and challenging locations on Earth. This is likely to be equally the case for expedition planners on Mars, where conditions (in terms of extremes of temperature, etc.) can be at least as daunting as back on Earth. With the success of recent unmanned missions to Mars, such as NASA's Mars Pathfinder, Mars Global Surveyor and Mars Odyssey, there is now a great deal of information available on the range of environmental conditions on Mars, from the tropics to the CO2 ice-covered polar caps. This has been further supplemented by the development of advanced numerical models of the Martian atmosphere, allowing detailed and accurate simulations and predictions of the weather and climate across the planet. This report discusses the main weather and climate variables which future Martian human expedition planners will need to take into account. The range of conditions likely to be encountered at a variety of typical locations on Mars is then considered, with reference to predictions from the ESA Mars Climate Database.

Stochastic resonance in a nonlinear model of a rotating, stratified shear flow, with a simple stochastic inertia-gravity wave parameterization

NONLINEAR PROCESSES IN GEOPHYSICS 11:1 (2004) 127-135

Authors:

PD Williams, TWN Haine, PL Read