• Publications
  • Influence
Cassini Encounters Enceladus: Background and the Discovery of a South Polar Hot Spot
Cassini's Composite Infrared Spectrometer (CIRS) detected 3 to 7 gigawatts of thermal emission from the south polar troughs at temperatures up to 145 kelvin or higher, making Enceladus only the third known solid planetary body—after Earth and Io—that is sufficiently geologically active for its internal heat to be detected by remote sensing. Expand
Properties and effects of dust particles suspended in the Martian atmosphere
Direct measurements of the optical depth above the two Viking landers are reported for a period covering the summer, fall, and winter seasons in the northern hemisphere, a time period during whichExpand
Infrared observations of the saturnian system from voyager 1.
During the passage of Voyager 1 through the Saturn system, the infrared instrument acquired spectral and radiometric data on Saturn, the rings, and Titan and other satellites, implying a depletion of helium in the atmosphere of Saturn relative to that of Jupiter. Expand
Titan's middle-atmospheric temperatures and dynamics observed by the Cassini Composite Infrared Spectrometer
The Composite Infrared Radiometer–Spectrometer (CIRS) instrument, on the NASA Cassini Saturn orbiter, has been acquiring thermal emission spectra from the atmosphere of Titan since orbit insertion inExpand
Initial results from radio occultation measurements with Mars Global Surveyor
A series of radio occultation experiments conducted with Mars Global Surveyor in early 1998 has yielded 88 vertical profiles of the neutral atmosphere. The measurements cover latitudes of 29°N toExpand
Titan's atmosphere: temperature and dynamics
In the lower atmosphere of Titan IR brightness temperatures exhibit meridional contrast \[lsims]3 K. Seasonal variations are absent because of the large radiative time constant. In the upperExpand
Vertical and meridional distribution of ethane, acetylene and propane in Saturn's stratosphere from CIRS/Cassini limb observations
Abstract Measuring the spatial distribution of chemical compounds in Saturn’s stratosphere is critical to better understand the planet’s photochemistry and dynamics. Here we present an analysis ofExpand
Temperatures, Winds, and Composition in the Saturnian System
Diurnal surface temperature variations on Phoebe suggest a more porous regolith than on the jovian satellites, and Saturn's ring temperatures have radial variations down to the smallest scale resolved (100 kilometers). Expand
Jupiter's ionosphere: Results from the First Galileo Radio Occultation Experiment
The Galileo spacecraft passed behind Jupiter on December 8, 1995, allowing the first radio occultation measurements of its ionospheric structure in 16 years. At ingress (24°S, 68°W), the principalExpand
Phase equilibrium of methane and nitrogen at low temperatures - Application to Titan
Abstract Methane and nitrogen are partially miscible in the condensed phase. Although there are experimental data on the vapor-liquid equilibria of methane-nitrogen mixtures at the low temperaturesExpand