Ground-Based Observational Support for Spacecraft Exploration of the Outer Planets

  title={Ground-Based Observational Support for Spacecraft Exploration of the Outer Planets},
  author={Glenn S. Orton},
  journal={Earth, Moon, and Planets},
  • G. Orton
  • Published 28 February 2009
  • Physics
  • Earth, Moon, and Planets
This report presents both a retrospective of ground-based support for spacecraft missions to the outer solar system and a perspective of support for future missions. Past support is reviewed in a series of case studies involving the author. The most basic support is essential, providing the mission with information without which the planned science would not have been accomplished. Another is critical, without which science would have been returned, but missing a key element in its… 
Jupiter's tropospheric composition and cloud structure from 5-μm spectroscopy
  • R. Giles
  • Physics, Environmental Science
  • 2016
This thesis uses infrared observations from spacecraft and ground-based telescopes to investigate the composition and cloud structure of the jovian atmosphere. It focuses on a single spectral region,
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Coordinated ground-based observations of Titan were performed around or during the Huygens atmospheric probe mission at Titan on 14 January 2005, connecting the momentary in situ observations by the
The Little Red Spot (LRS) in Jupiter's atmosphere was investigated in unprecedented detail by the New Horizons spacecraft together with the Hubble Space Telescope (HST) and the Very Large Telescope
Polar Lightning and Decadal-Scale Cloud Variability on Jupiter
Optical observations from the New Horizons spacecraft have identified lightning at high latitudes above Jupiter up to 80°N and 74°S, demonstrating that vertical dynamical processes are time-varying on seasonal scales at mid- and low latitudes on Jupiter.
Earth-Based Observations of the Galileo Probe Entry Site
Earth-based observations of Jupiter indicate that the Galileo probe probably entered Jupiter's atmosphere just inside a region that has less cloud cover and drier conditions than more than 99 percent
Semi-annual oscillations in Saturn’s low-latitude stratospheric temperatures
The existence of similar oscillations in Saturn's atmosphere is reported, from an analysis of over two decades of spatially resolved observations of its 7.8-μm methane and 12.2- μm ethane stratospheric emissions, to support the interpretation of vertical and meridional variability of temperatures in Saturn’s stratosphere as a manifestation of a wave phenomenon similar to that on the Earth and in Jupiter.
An equatorial oscillation in Saturn’s middle atmosphere
The latitudinal extent of Saturn’s oscillation shows that it obeys the same basic physics as do those on Earth and Jupiter, and future highly resolved observations of the temperature profile together with modelling will allow us to determine the wave mode, the wavelength and the wave amplitude that lead to middle atmosphere oscillation.
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Spectra for a 5-micrometer hot spot on Jupiter are consistent with the absence of a significant water cloud above 8 bars and with a depletion of water compared to that predicted for solar composition, corroborating results from the Galileo probe.
New Observations and Modelling of a QBO-Like Oscillation in Jupiter's Stratosphere
Abstract We present a new analysis of the “quasi-quadrennial” oscillation (QQO), a quasi-periodic oscillation of longitude-mean temperatures and winds occurring at low latitudes in Jupiter's
Evolution and persistence of 5‐μm hot spots at the Galileo probe entry latitude
We present a study on the longitudinal locations, morphology, and evolution of the 5-μm hot spots at 6.5°N latitude (planetocentric) from an extensive Infrared Telescope Facility-National Science
Characteristics of the Galileo Probe Entry Site From Earth-Based Remote Sensing Observations
A reassessment of ground-based observations confirms to better than a 98% confidence level that the Galileo probe entered a 5-μm hot spot, a region of unusual clarity and dryness, some 900±300 km