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darrell-strobel

Darrell Strobel

Professor

121 Olin Hall
By appointment
410-516-7829
strobel@jhu.edu
Curriculum Vitae
Personal Website

Biography
Publications

In 1968, Darrell Strobel joined the Planetary Science Division at the Kitt Peak National Observatory in Tucson as a research associate, where he began theoretical studies of planetary atmospheres and continued his research in terrestrial aeronomy. He was promoted to assistant physicist in 1970, and in 1972 to associate physicist.  Strobel joined the Naval Research Laboratory's Plasma Physics Division in 1973 as a research physicist responsible for theoretical studies of the Earth's atmosphere. In 1976 he was promoted to the head of the Atmospheric Dynamics Section in the Geophysical and Plasma Dynamics Branch. In 1984, Strobel joined the Department of Earth and Planetary Sciences of The Johns Hopkins University as a professor, and also has a joint appointment as professor in the Department of Physics and Astronomy and is on the principal professional staff of Hopkins Applied Physics Laboratory. He is the author of more than 195 journal publications and 25 book chapters.

Strobel’s educational background is in physics and he specializes in planetary atmospheres/astrophysics. He studies a broad range of fundamental problems in atmospheric chemistry, dynamics, and radiation pertinent to the atmospheres of the giant planets and their satellites with the goal to understand the global structure of composition, pressure, temperature, and winds. Of particular current interest are magnetospheric plasma interactions with the extended atmospheres of Titan, Triton, Pluto, and the Galilean satellites (Io, Europa, and Ganymede) and investigation of the energy balance, ionospheric structure, and radiative output of their upper atmospheres, and the mass loading rates of the parent planets' magnetospheres. As a co-investigator of the UV Spectrometer Experiment on the Voyager Mission, he led in the identification of N2 as major constituent in the atmospheres of Titan and Triton and the interpretation of UV data in terms of energetics, charge exchange processes, and basic plasma properties of the Io plasma torus. He created, with colleagues Paul Feldman and Warren Moos of the Department of Physics and Astronomy, an active observational program with the Hubble Space Telescope (HST) of Jupiter, its Io plasma torus, and the Galilean satellites.

As the Cassini Mission Orbiter Interdisciplinary Scientist for Aeronomy and Solar Wind Interaction, he is currently involved in analysis and interpretation of data being taken on the orbital tour of the Saturnian system, which started in July 2004 and has been extended through 2017.  He is also a co-investigator on the New Horizons Pluto Kuiper-belt Mission, which was successfully launched on January 19, 2006, and will arrive at Pluto in July 2015. 

In addition to planetary interests, he has pursued research on topics concerning the Earth's atmosphere. His early studies of the Earth's F-region ionosphere led to the recognition of the important role that thermospheric wind systems play in plasma transport and seasonal variations of the electron density. More recently, his interests in terrestrial research have been on the dynamics of the middle atmosphere and the coupling and interaction of chemistry, radiation, and dynamics, including detailed studies of the zonally averaged circulation and minor constituent transport by waves and the mean circulation, which he still pursues with his colleague Xun Zhu of the JHU Applied Physics Laboratory.

Displaying the 20 most recent publications. (Please refresh the page if no publications initially appear.)

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KD Retherford, GR Gladstone, SA Stern, HA Weaver, LA Young, ...
Pluto's Extended Atmosphere: New Horizons Alice Lyman-alpha Imaging
AAS/Division for Planetary Sciences Meeting Abstracts 47, 2015

TT Koskinen, BR Sandel, RV Yelle, DF Strobel, ICF Müller-Wodarg, ...
Saturn’s variable thermosphere from Cassini/UVIS occultations
Icarus 260, 174-189, 2015

SA Stern, F Bagenal, K Ennico, GR Gladstone, WM Grundy, ...
The Pluto system: Initial results from its exploration by New Horizons
Science 350 (6258), aad1815, 2015

L Roth, KD Retherford, J Saur, DF Strobel, PD Feldman, MA McGrath, ...
Europa's neutral and plasma environment investigated through FUV aurora imaging
European Planetary Science Congress 2015, held 27 September-2 October, 2015 ..., 2015

TT Koskinen, DF Strobel, RA West, RV Yelle
Variability in Saturn's upper atmosphere from Cassini/UVIS occultations
European Planetary Science Congress 2015, held 27 September-2 October, 2015 ..., 2015

DF Strobel, X Zhu
Comparative Planetary Atmospheres of Pluto and Triton
European Planetary Science Congress 2015, held 27 September-2 October, 2015 ..., 2015

F Bagenal, PA Delamere, HA Elliott, ME Hill, CM Lisse, DJ McComas, ...
Solar wind at 33 AU: Setting bounds on the Pluto interaction for New Horizons
Journal of Geophysical Research: Planets 120 (9), 1497-1511, 2015

NJ Cunningham, JR Spencer, PD Feldman, DF Strobel, K France, ...
Detection of Callisto’s oxygen atmosphere with the Hubble Space Telescope
Icarus 254, 178-189, 2015

CM Lisse, RL McNutt, AS Stern, TE Craven, ME Hill, DF Strobel, X Zhu, ...
Limits on Pluto's Atmospheric Escape Rate from Charge Exchange X-Rays
Lunar and Planetary Science Conference 46, 2991, 2015

J Saur, S Duling, L Roth, X Jia, DF Strobel, PD Feldman, UR Christensen, ...
The search for a subsurface ocean in Ganymede with Hubble Space Telescope observations of its auroral ovals
Journal of Geophysical Research: Space Physics 120 (3), 1715-1737, 2015

TE Cravens, DF Strobel
Pluto’s solar wind interaction: Collisional effects
Icarus 246, 303-309, 2015

L Roth, KD Retherford, J Saur, DF Strobel, PD Feldman, MA McGrath, ...
Orbital apocenter is not a sufficient condition for HST/STIS detection of Europa’s water vapor aurora
Proceedings of the National Academy of Sciences 111 (48), E5123-E5132, 2014

FM Musacchio, J Saur, L Roth, PD Feldman, DF Strobel, KD Retherford, ...
Observations of Ganymede's variable auroral ovals on leading side derived from HST/STIS
AGU Fall Meeting Abstracts 1, 4308, 2014

KD Retherford, AJ Steffl, JR Spencer, R Gladstone, L Roth, J Saur, ...
Far-UV Eclipse Observations of Ganymede's Atmosphere with New Horizons Alice: New Constraints to the Atomic Oxygen Component
AGU Fall Meeting Abstracts 1, 4009, 2014

L Roth, J Saur, KD Retherford, DF Strobel, PD Feldman, A Bloecker, ...
New HST observations of Io's time-variable UV aurora: Probing Io's magma ocean and neutral and plasma environment
AGU Fall Meeting Abstracts 1, 04, 2014

DP Hinson, I Linscott, WW Woods, GL Tyler, MK Bird, M Paetzold, ...
The New Horizons Radio Science Experiment: Expected Performance in Measurements of Pluto's Atmospheric Structure, Surface Pressure, and Surface Temperature
AGU Fall Meeting Abstracts 1, 06, 2014

OA Hartkorn, J Saur, A Bloecker, DF Strobel, S Simon
A Model of Callisto's Ionosphere
AGU Fall Meeting Abstracts 1, 4306, 2014

L Roth, KD Retherford, J Saur, DF Strobel, PD Feldman, MA McGrath, ...
Following up on the Discovery of Water Vapor at Europa's South Pole with HST
AGU Fall Meeting Abstracts 1, 05, 2014

RL McNutt, CM Lisse, A Stern, TE Cravens, ME Hill, DF Strobel, X Zhu, ...
Charge-Exchange X-rays: Limits on Pluto's Atmospheric Escape Rate
AAS/Division for Planetary Sciences Meeting Abstracts 46, 2014

JR Spencer, NJ Cunningham, PD Feldman, DF Strobel
Characterization of Callisto's O2 Atmosphere with HST
AAS/Division for Planetary Sciences Meeting Abstracts 46, 2014