P
Paul G. Steffes
Researcher at Georgia Institute of Technology
Publications - 94
Citations - 2007
Paul G. Steffes is an academic researcher from Georgia Institute of Technology. The author has contributed to research in topics: Venus & Opacity. The author has an hindex of 22, co-authored 90 publications receiving 1635 citations.
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Journal ArticleDOI
Jupiter's interior and deep atmosphere: The initial pole-to-pole passes with the Juno spacecraft
Scott Bolton,Alberto Adriani,Virgil Adumitroaie,Matthew A. Allison,J. D. Anderson,Sushil K. Atreya,Jeremy Bloxham,Shannon Brown,John E. P. Connerney,E. DeJong,William M. Folkner,D. Gautier,Davide Grassi,Samuel Gulkis,Tristan Guillot,Candice Hansen,William B. Hubbard,Luciano Iess,Andrew P. Ingersoll,M. A. Janssen,John Leif Jørgensen,Yohai Kaspi,Steven Levin,Cheng Li,Jonathan I. Lunine,Yamila Miguel,Alessandro Mura,Glenn S. Orton,Tobias Owen,M. A. Ravine,Edward J. Smith,Paul G. Steffes,E. C. Stone,D. J. Stevenson,Richard M. Thorne,J. H. Waite,Daniele Durante,Robert Ebert,Thomas K. Greathouse,Vincent Hue,Marzia Parisi,Jamey Szalay,Robert W. Wilson +42 more
TL;DR: Juno’s first close pass over Jupiter provides answers and fresh questions about the giant planet, including images of weather in the polar regions and measurements of the magnetic and gravitational fields and microwaves to peer below the visible surface.
Journal ArticleDOI
The distribution of ammonia on Jupiter from a preliminary inversion of Juno Microwave Radiometer data
Cheng Li,Andrew P. Ingersoll,Michael Janssen,Steven Levin,Scott Bolton,Virgil Adumitroaie,Michael Allison,J. K. Arballo,Amadeo Bellotti,Shannon Brown,Shawn P. Ewald,L. A. Jewell,Sidharth Misra,Glenn S. Orton,Fabiano Oyafuso,Paul G. Steffes,R. Williamson +16 more
TL;DR: In this article, a combination of Markov chain Monte Carlo method and Tikhonov regularization was used to invert Jupiter's global ammonia distribution assuming a prescribed temperature profile.
Journal ArticleDOI
Radio Occultation Studies of the Venus Atmosphere with the Magellan Spacecraft: 2. Results from the October 1991 Experiments
TL;DR: In this article, three dual-frequency ingress radio occultation experiments were conducted at Venus during consecutive orbits of the Magellan spacecraft, with a solar zenith angle of 108 degrees, reaching below 35 km at 3.6 cm, and below 34 km at 13 cm.
Journal ArticleDOI
The water abundance in Jupiter’s equatorial zone
Cheng Li,Andrew P. Ingersoll,Scott Bolton,Steven Levin,Michael Janssen,Sushil K. Atreya,Jonathan I. Lunine,Paul G. Steffes,Shannon Brown,Tristan Guillot,Michael Allison,J. K. Arballo,Amadeo Bellotti,Virgil Adumitroaie,Samuel Gulkis,Amoree Hodges,Liming Li,Sidharth Misra,Glenn S. Orton,Fabiano Oyafuso,Daniel Santos-Costa,Hunter Waite,Zhimeng Zhang +22 more
TL;DR: The water abundance at the equatorial region is inferred to be $$2.5 − 1.6 − 2.2 + 2.4 − 1σ uncertainties as discussed by the authors, which suggests that the planetesimals that formed Jupiter were unlikely to have been water-rich clathrate hydrates.
Journal ArticleDOI
MWR: Microwave Radiometer for the Juno Mission to Jupiter
M. A. Janssen,J. E. Oswald,Shannon Brown,Samuel Gulkis,Steven Levin,Scott Bolton,Michael Allison,Sushil K. Atreya,D. Gautier,Andrew P. Ingersoll,Jonathan I. Lunine,Glenn S. Orton,T. C. Owen,Paul G. Steffes,Virgil Adumitroaie,Amadeo Bellotti,L. A. Jewell,Cheng Li,Liming Li,Sidharth Misra,Fabiano Oyafuso,Daniel Santos-Costa,E. Sarkissian,R. Williamson,J. K. Arballo,Amarit Kitiyakara,A. Ulloa-Severino,J. C. Chen,F. Maiwald,A. S. Sahakian,P. J. Pingree,K. A. Lee,A. S. Mazer,Richard Redick,Richard Hodges,R. C. Hughes,G. Bedrosian,Douglas Dawson,William Hatch,Damon Russell,Neil Chamberlain,M. S. Zawadski,Behrouz Khayatian,B. R. Franklin,Henry A. Conley,J. G. Kempenaar,M. S. Loo,E. T. Sunada,V. Vorperion,C. C. Wang +49 more
TL;DR: The Juno Microwave Radiometer (MWR) as mentioned in this paper is a six-frequency scientific instrument designed and built to investigate the deep atmosphere of Jupiter, with frequencies distributed approximately by octave from 600 MHz to 22 GHz, it is one of a suite of instruments on NASA's New Frontiers Mission Juno launched to Jupiter on August 5, 2011.