PTYS/LPL Faculty

Adam Showman

CURRENT STUDENTS

  • Catherine Elder (PTYS)
  • Tiffany Kataria (PTYS)
  • Tad Komacek (PTYS)
  • Xianyu Tan (PTYS)

FORMER STUDENTS

  • Michael Bland, 2008 (PTYS)
  • David Choi, 2009 (PTYS)
  • Curtis Cooper, 2006 (PTYS)
  • Tiffany Kataria, 2014 (PTYS)
  • Nikole Lewis, 2012 (PTYS)
  • Yuan Lian, 2009 (PTYS)
  • Kunio Sayanagi, 2007 (Physics)

CURRENT POSTDOC(S)

  • Michael Sussman
  • Xi Zhang

FORMER POSTDOC(S)

  • Mitri Giuseppe, 2004-2006
  • David Choi, 2009-2011
  • Emily Rauscher, 2010-2012
Adam Showman
Professor
Dynamics and evolution of planetary atmospheres
Ph.D., 1999, California Institute of Technology

Kuiper   #430
520-621-4021


Years with LPL:  2001 to present

RESEARCH INTERESTS

Dr. Showman investigates the dynamics and evolution of planetary atmospheres and interiors. His atmospheric research currently focuses on giant planets---Jupiter, Saturn, Uranus, Neptune, and the hundreds of giant planets that are being detected around other stars.

In addition to the active research areas described above, Dr. Showman also has a long-term interest in the atmospheric dynamics, climate, interior state, and geophysics of the terrestrial planets Earth, Mars, and Venus. A new area of interest is the atmospheric structure and dynamnics of brown dwarfs.

More about Dr. Showman

CV for Dr. Showman (PDF)

CURRENT GRANTS

  • Atmospheric circulation of hot Jupiters: NASA Origins
  • Jets on the giant planets: NASA Planetary Atmospheres
  • Extrasolar storms: The physics and chemistry of evolving cloud structures in brown dwarf atmospheres: NASA Spitzer Space Telescope
  • Life on the edge: Planetary Atmospheres in Extreme Environments (with Nickole Lewis): NASA Spitzer Space Telescope
  • Mapping Weather on Brown Dwarfs: NASA Spitzer Space Telescope
  • Observational analysis of Jupiter's equatorial circulations and Oval BA: NASA Jupiter Data Analysis Program
  • The coupled orbital and thermal evolution of Io: NASA Earth and Space Science Fellowships (NESSF) for Cathering Elder
  • The atmospheric structure of giant hot exoplanets: Space Telescope Science Institute

FORMER SPACECRAFT INVOLVEMENT

Science Definition Team for NASA Jupiter System Observer (JSO) mission concept, 2007; Science Definition Team for Jupiter Europa Orbiter (JEO), 2008-2010.

SELECTED PUBLICATIONS

Zellem, R. T., et al. The 4.5 μm Full-orbit Phase Curve of the Hot Jupiter HD 209458b 2014ApJ...790...53Z

Zhang, X., Showman, A. P. Atmospheric Circulation of Brown Dwarfs: Jets, Vortices, and Time Variability 2014ApJ...788L...6Z

Shporer, A., et al. Atmospheric Characterization of the Hot Jupiter Kepler-13Ab 2014ApJ...788...92S

Kataria, T., et al. The Atmospheric Circulation of the Super Earth GJ 1214b: Dependence on Composition and Metallicity 2014ApJ...785...92K

Rauscher, E., Showman, A. P. The Influence of Differential Irradiation and Circulation on the Thermal Evolution of Gas Giant Planets. I. Upper Limits from Radiative Equilibrium 2014ApJ...784..160R

Beatty, T. G., et al. Spitzer and z' Secondary Eclipse Observations of the Highly Irradiated Transiting Brown Dwarf KELT-1b 2014ApJ...783..112B

Rogers, T. M., Showman, A. P. Magnetohydrodynamic Simulations of the Atmosphere of HD 209458b 2014ApJ...782L...4R

O'Rourke, J. G., et al. Warm Spitzer and Palomar Near-IR Secondary Eclipse Photometry of Two Hot Jupiters: WASP-48b and HAT-P-23b 2014ApJ...781..109O

Kammer, J. A., et al. A Spitzer Search for Transits of Radial Velocity Detected Super-Earths 2014ApJ...781..103K

Showman, A. P. Astrophysics: Portrait of a dynamic neighbour 2014Natur.505..625S

Nikolov, N., et al. Hubble Space Telescope hot Jupiter transmission spectral survey: a detection of Na and strong optical absorption in HAT-P-1b 2014MNRAS.437...46N

Sing, D. K., et al. HST hot-Jupiter transmission spectral survey: evidence for aerosols and lack of TiO in the atmosphere of WASP-12b 2013MNRAS.436.2956S

Showman, A. P., Han, L., Hubbard, W. B. The effect of an asymmetric core on convection in Enceladus' ice shell: Implications for south polar tectonics and heat flux 2013GeoRL..40.5610S

Showman, A.P., L. Han, and W.B. Hubbard 2013. The hemispheric dichotomy of surface tectonics and heat flux on Enceladus. Submitted to Geophys. Res. Lett.

Perez-Becker, D., Showman, A. P. Atmospheric Heat Redistribution on Hot Jupiters 2013ApJ...776..134P

Nikolov, N., D.K. Sing, F. Pont, A.S. Burrows, J.J. Fortney, G.E. Ballester, T.M. Evans, C.M. Huitson, H.R. Wakeford, P.A. Wilson, S. Aigrain, D. Deming, N.P. Gibson, G.W. Henry, A. Lecavelier des Etangs, A.P. Showman, A. Vidal-Madjar, and K. Zahnle 2013. HST hot Jupiter transmission spectral survey: A detection of Na and strong optical absorption in HAT-P-1b. Submitted to Mon. Not. Roy. Astron. Soc.

Baskin, N.J., H.A. Knutson, A. Burrows, J.J. Fortney, N.K. Lewis, E. Agol, D. Charbonneau, N.B. Cowan, D. Deming, J-M. Desert, J. Langton, G. Laughlin, and A.P. Showman 2013. Secondary eclipse photometry of the exoplanet WASP-5b with warm Spitzer. Astrophys. J., in press.

Huitson, C. M., et al. An HST optical-to-near-IR transmission spectrum of the hot Jupiter WASP-19b: detection of atmospheric water and likely absence of TiO 2013MNRAS.434.3252H

Showman, A.P., R.D. Wordsworth, T.M. Merlis, and Y. Kaspi 2013. Atmospheric circulation of terrestrial exoplanets. Invited review for the book Comparative Climatology of Terrestrial Planets, Univ. Arizona Press. In press.

Wakeford, H.R., D.K. Sing, D. Deming, N.P. Gibson, J.J. Fortney, A.S. Burrows, G. Ballester, N. Nikolov, S. Aigrain, G. Henry, H. Knutson, A. Lecavelier des Etangs, F. Pont, A.P. Showman, A. Vidal-Madjar, and K. Zahnle 2013. HST hot Jupiter transmission spectral survey: detection of water in HAT-P-1b from WFC3 near-IR spatial scan observations. Submitted to Mon. Not. Roy. Astron. Soc.

Deming, D., A. Wilkins, P. McCullough, A. Burrows, J.J. Fortney, E. Agol, I. Dobbs-Dixon, N. Madhusudhan, N. Crouzet, J-M. Desert, R.L. Gilliland, K. Haynes, H.A. Knutson, M. Line, Z. Magic, A.M. Mandell, S. Ranjan, D. Charbonneau, M. Clampin, S. Seager, and A.P. Showman 2013. Infrared transmission spectroscopy of the exoplanets HD 209458b and XO-1b using the wide field Camera-3 on the Hubble Space Telescope. Astrophys. J., in press.

Parmentier, V., Showman, A. P., Lian, Y. 3D mixing in hot Jupiters atmospheres. I. Application to the day/night cold trap in HD 209458b 2013A&A...558A..91P

Hirata, N., H. Miyamoto, and A.P. Showman 2012. Deposits of the E ring materials on saturnian satellites constrain cryovolcanic activities of Enceladus.

Showman, A. P., Kaspi, Y. Atmospheric Dynamics of Brown Dwarfs and Directly Imaged Giant Planets 2013ApJ...776...85S

Swain, M., et al. Probing the extreme planetary atmosphere of WASP-12b 2013Icar..225..432S

Todorov, K. O., et al. Warm Spitzer Photometry of Three Hot Jupiters: HAT-P-3b, HAT-P-4b and HAT-P-12b 2013ApJ...770..102T

Kataria, T., et al. Three-dimensional Atmospheric Circulation of Hot Jupiters on Highly Eccentric Orbits 2013ApJ...767...76K

Liu, B., Showman, A. P. Atmospheric Circulation of Hot Jupiters: Insensitivity to Initial Conditions 2013ApJ...770...42L

Kaspi, Y., et al. Atmospheric confinement of jet streams on Uranus and Neptune 2013Natur.497..344K

Choi, D. S., Showman, A. P., Vasavada, A. R., Simon-Miller, A. A. Meteorology of Jupiter's equatorial hot spots and plumes from Cassini 2013Icar..223..832C

Lewis, N. K., et al. Orbital Phase Variations of the Eccentric Giant Planet HAT-P-2b 2013ApJ...766...95L

Showman, A. P., et al. Doppler Signatures of the Atmospheric Circulation on Hot Jupiters 2013ApJ...762...24S

Buenzli, E., et al. Vertical Atmospheric Structure in a Variable Brown Dwarf: Pressure-dependent Phase Shifts in Simultaneous Hubble Space Telescope-Spitzer Light Curves 2012ApJ...760L..31B

Knutson, H. A., et al. 3.6 and 4.5 μm Phase Curves and Evidence for Non-equilibrium Chemistry in the Atmosphere of Extrasolar Planet HD 189733b 2012ApJ...754...22K

Crossfield, I. J. M., et al. Spitzer/MIPS 24 μm Observations of HD 209458b: Three Eclipses, Two and a Half Transits, and a Phase Curve Corrupted by Instrumental Sensitivity Variations 2012ApJ...752...81C

Jackson, B. K., et al. The EVIL-MC Model for Ellipsoidal Variations of Planet-hosting Stars and Applications to the HAT-P-7 System 2012ApJ...751..112J

Han, L., Tobie, G., Showman, A. P. The impact of a weak south pole on thermal convection in Enceladus' ice shell 2012Icar..218..320H

Todorov, K. O., et al. Warm Spitzer Observations of Three Hot Exoplanets: XO-4b, HAT-P-6b, and HAT-P-8b 2012ApJ...746..111T

Choi, D. S., Showman, A. P. Power spectral analysis of Jupiter's clouds and kinetic energy from Cassini 2011Icar..216..597C

Showman, A. P., Polvani, L. M. Equatorial Superrotation on Tidally Locked Exoplanets 2011ApJ...738...71S

Fletcher, L. N., et al. Saturn's tropospheric composition and clouds from Cassini/VIMS 4.6-5.1 μm nightside spectroscopy 2011Icar..214..510F

Moses, J. I., et al. Disequilibrium Carbon, Oxygen, and Nitrogen Chemistry in the Atmospheres of HD 189733b and HD 209458b 2011ApJ...737...15M

Han, L., Showman, A. P. Coupled convection and tidal dissipation in Europa’s ice shell using non-Newtonian grain-size-sensitive (GSS) creep rheology 2011Icar..212..262H

Showman, A. P., Kaspi, Y., Flierl, G. R. Scaling laws for convection and jet speeds in the giant planets 2011Icar..211.1258S

Beerer, I. M., et al. Secondary Eclipse Photometry of WASP-4b with Warm Spitzer 2011ApJ...727...23B

Deming, D., et al. Warm Spitzer Photometry of the Transiting Exoplanets CoRoT-1 and CoRoT-2 at Secondary Eclipse 2011ApJ...726...95D

Showman, A. P., Polvani, L. M. The Matsuno-Gill Model and Equatorial Superrotation 2010AGUFM.A33H..06S

Bland, M. T., McKinnon, W. B., Showman, A. P. The effects of strain localization on the formation of Ganymede’s grooved terrain 2010Icar..210..396B

Mitri, G., et al. Mountains on Titan: Modeling and observations 2010JGRE..11510002M

Lewis, N. K., et al. Atmospheric Circulation of Eccentric Hot Neptune GJ436b 2010ApJ...720..344L

Han, L., Showman, A. P. Coupled convection and tidal dissipation in Europa’s ice shell 2010Icar..207..834H

Showman, A.P., J.Y-K. Cho, and K. Menou 2010. Atmospheric circulation of extrasolar planets. Invited review article for the book Exoplanets (S. Seager, Ed.), Univ. Arizona Press, pp. 471-516.

Lian, Y., Showman, A. P. Generation of equatorial jets by large-scale latent heating on the giant planets 2010Icar..207..373L

Choi, D. S., Showman, A. P., Vasavada, A. R. The evolving flow of Jupiter’s White Ovals and adjacent cyclones 2010Icar..207..359C

Penny, A. B., Showman, A. P., Choi, D. S. Suppression of the Rhines effect and the location of vortices on Saturn 2010JGRE..11502001P

Fortney, J. J., et al. Transmission Spectra of Three-Dimensional Hot Jupiter Model Atmospheres 2010ApJ...709.1396F

Kaspi, Y., et al. Gravitational signature of Jupiter's internal dynamics 2010GeoRL..3701204K

Barr, A.C. and A.P. Showman 2009. Heat transfer in Europa's icy shell. In Europa (R.T. Pappalardo, W.B. McKinnon, and K. Khurana, Eds.), Univ. Arizona Press, pp. 405-430.

Del Genio, A.D., R.K. Achterberg, K.H. Baines, F.M. Flasar, P.L. Read, A. Sanchez-Lavega, and A.P. Showman 2009. Saturn atmospheric structure and dynamics. In Saturn from Cassini-Huygens (M.K. Dougherty, L.W. Esposito, and S.M. Krimigis, Eds.), Springer, New York. pp. 113-160.

Baines, K. H., et al. Saturn's north polar cyclone and hexagon at depth revealed by Cassini/VIMS 2009P&SS...57.1671B

Mousis, O., et al. Elemental abundances and minimum mass of heavy elements in the envelope of HD 189733b 2009A&A...507.1671M

Barnes, J. W., et al. Detecting the Wind-Driven Shapes of Extrasolar Giant Planets from Transit Photometry 2009ApJ...706..877B

Knutson, H. A., et al. The 8 μm Phase Variation of the Hot Saturn HD 149026b 2009ApJ...703..769K

Showman, A.P. 2009. Windy clues to Saturn's spin. Nature 460, 582-583.

Kaspi, Y., Flierl, G. R., Showman, A. P. The deep wind structure of the giant planets: Results from an anelastic general circulation model 2009Icar..202..525K

Showman, A. P., et al. Atmospheric Circulation of Hot Jupiters: Coupled Radiative-Dynamical General Circulation Model Simulations of HD 189733b and HD 209458b 2009ApJ...699..564S

Choi, D. S., Showman, A. P., Brown, R. H. Cloud features and zonal wind measurements of Saturn's atmosphere as observed by Cassini/VIMS 2009JGRE..11404007C

Bland, M. T., Showman, A. P., Tobie, G. The orbital thermal evolution and global expansion of Ganymede 2009Icar..200..207B

Knutson, H. A., et al. Multiwavelength Constraints on the Day-Night Circulation Patterns of HD 189733b 2009ApJ...690..822K

Bland, M. T., Showman, A. P., Tobie, G. The production of Ganymede's magnetic field 2008Icar..198..384B

Mitri, G., et al. Resurfacing of Titan by ammonia-water cryomagma 2008Icar..196..216M

Showman, A. P., et al. Atmospheric Circulation of Hot Jupiters: Three-dimensional Circulation Models of HD 209458b and HD 189733b with Simplified Forcing 2008ApJ...682..559S

Mitri, G., Showman, A. P. A model for the temperature-dependence of tidal dissipation in convective plumes on icy satellites: Implications for Europa and Enceladus 2008Icar..195..758M

Lian, Y., Showman, A. P. Deep jets on gas-giant planets 2008Icar..194..597L

Showman, A. P. Extrasolar planets: A whiff of methane 2008Natur.452Q.296S

Mitri, G., Showman, A. P. Thermal convection in ice-I shells of Titan and Enceladus 2008Icar..193..387M

Han, L., Showman, A. P. Implications of shear heating and fracture zones for ridge formation on Europa 2008GeoRL..3503202H

Sayanagi, K. M., Showman, A. P., Dowling, T. E. The Emergence of Multiple Robust Zonal Jets from Freely Evolving, Three-Dimensional Stratified Geostrophic Turbulence with Applications to Jupiter 2008JAtS...65.3947S

Bland, M. T., Beyer, R. A., Showman, A. P. Unstable extension of Enceladus' lithosphere 2007Icar..192...92B

Bland, M. T., Showman, A. P. The formation of Ganymede's grooved terrain: Numerical modeling of extensional necking instabilities 2007Icar..189..439B

Knutson, H. A.,et al. A map of the day-night contrast of the extrasolar planet HD 189733b 2007Natur.447..183K

Choi, D. S., et al. Velocity and vorticity measurements of Jupiter's Great Red Spot using automated cloud feature tracking 2007Icar..188...35C

Sayanagi, K. M., Showman, A. P. Effects of a large convective storm on Saturn's equatorial jet 2007Icar..187..520S

Mitri, G., et al. Hydrocarbon lakes on Titan 2007Icar..186..385M

Dowling, T.E. and A.P. Showman 2006. Earth as a Planet: Atmosphere and Oceans. In Encyclopedia of the Solar System, 2nd Ed., (L-A. McFadden, P. Weissman, and T. Johnson, Eds), Academic Press.

Showman, A. P. Numerical Simulations of Forced Shallow-Water Turbulence: Effects of Moist Convection on the Large-Scale Circulation of Jupiter and Saturn 2007JAtS...64.3132S

Fortney, J. J., et al. The Influence of Atmospheric Dynamics on the Infrared Spectra and Light Curves of Hot Jupiters 2006ApJ...652..746F

Cooper, C. S., Showman, A. P. Dynamics and Disequilibrium Carbon Chemistry in Hot Jupiter Atmospheres, with Application to HD 209458b 2006ApJ...649.1048C

Williams, P. K. G., et al.Resolving the Surfaces of Extrasolar Planets with Secondary Eclipse Light Curves 2006ApJ...649.1020W

Showman, A. P., Gierasch, P. J., Lian, Y. Deep zonal winds can result from shallow driving in a giant-planet atmosphere 2006Icar..182..513S

Dowling, T. E., et al. The EPIC atmospheric model with an isentropic/terrain-following hybrid vertical coordinate 2006Icar..182..259D

Miyamoto, H., et al. Mapping the structure and depth of lava tubes using ground penetrating radar 2005GeoRL..3221316M

Mitri, G., Showman, A. P. Convective conductive transitions and sensitivity of a convecting ice shell to perturbations in heat flux and tidal-heating rate: Implications for Europa 2005Icar..177..447M

Showman, A. P., Han, L. Effects of plasticity on convection in an ice shell: Implications for Europa 2005Icar..177..425S

Miyamoto, H., et al. Putative ice flows on Europa: Geometric patterns and relation to topography collectively constrain material properties and effusion rates 2005Icar..177..413M

Han, L., Showman, A. P. Thermo-compositional convection in Europa's icy shell with salinity 2005GeoRL..3220201H

Vasavada, A. R., Showman, A. P. Jovian atmospheric dynamics: an update after Galileo and Cassini 2005RPPh...68.1935V

Cooper, C. S., Showman, A. P. Dynamic Meteorology at the Photosphere of HD 209458b 2005ApJ...629L..45C

Showman, A. P., de Pater, I. Dynamical implications of Jupiter's tropospheric ammonia abundance 2005Icar..174..192S

Showman, A. P., Mosqueira, I., Head, J. W. On the resurfacing of Ganymede by liquid water volcanism 2004Icar..172..625S

Melosh, H. J., et al. The temperature of Europa's subsurface water ocean 2004Icar..168..498M

Ingersoll, A.P., T.E. Dowling, P.J. Gierasch, G.S. Orton, P.L. Read, A. Sanchez-Lavega, A.P. Showman, A.A. Simon-Miller, and A.R. Vasavada 2004. Dynamics of Jupiter's atmosphere. In Jupiter: the Planet, Satellites, and Magnetosphere. Cambridge Univ. Press, pp. 105-128.

Showman, A. P., Han, L. Numerical simulations of convection in Europa's ice shell: Implications for surface features 2004JGRE..10901010S

Showman, A.P. Planetary atmospheres: the giant planets and their satellites. in The Encyclopedia of Atmospheric Science, Academic Press, pp. 1730-1745.

Showman, A. P., Guillot, T. Atmospheric circulation and tides of "51 Pegasus b-like" planets 2002A&A...385..166S

Guillot, T., Showman, A. P. Evolution of "51 Pegasus b-like" planets 2002A&A...385..156G

Showman, A. P. Hydrogen Halides on Jupiter and Saturn 2001Icar..152..140S

Stratman, P. W., et al. EPIC Simulations of Bright Companions to Neptune's Great Dark Spots 2001Icar..151..275S

Showman, A. P., Dowling, T. E. Nonlinear Simulations of Jupiter's 5-Micron Hot Spots 2000Sci...289.1737S

Showman, A. P., Malhotra, R. The Galilean satellites. 1999Sci...296...77S

Showman, A. P., Ingersoll, A. P. Interpretation of Galileo Probe Data and Implications for Jupiter's Dry Downdrafts 1998Icar..132..205S

Showman, A. P., Stevenson, D. J., Malhotra, R. Coupled Orbital and Thermal Evolution of Ganymede 1997Icar..129..367S

Showman, A. P., Malhotra, R. Tidal Evolution into the Laplace Resonance and the Resurfacing of Ganymede 1997Icar..127...93S