PTYS/LPL Faculty

Roger Yelle

FORMER STUDENTS

  • Sarah Horst, 2011 (PTYS)
  • Yiping Wang, 1993 (PTYS)

CURRENT POSTDOC(S)

  • Justin Erwin
  • Hannes Groller
  • Jean Masterson

FORMER POSTDOC(S)

  • Panayotis Lavvas
  • Darci Snowden
  • Tommi Koskinen
Roger Yelle
Professor
Planetary atmospheres
Ph.D., 1984, University of Wisconsin-Madison

Kuiper   #525
520-621-6243


Years with LPL:  2001 to present

RESEARCH INTERESTS

Professor Yelle studies the atmospheres in our solar system and the atmospheres of extra-solar planets. He analyzes telescopic and spacecraft data and constructs theories and models to determine the composition and structure of atmospheres and their interaction with surfaces and interplanetary space. Current projects include the study of chemical, thermal and dynamical processes in Titan’s upper atmosphere using primarily data from the Cassini mission to the Saturn system, escape processes on Titan, Mars, and extra-solar planets, and the composition and chemistry of the martian atmosphere. Yelle is a member of the Cassini Ion Neutral Mass Spectrometer Team and a co-I on the planned Maven mission to study the upper atmosphere of Mars.

More about Dr. Yelle

CV for Dr. Yelle (PDF)

CURRENT GRANTS

  • Post-Cassini Investigations of Titan Atmospheric Chemistry
  • Dynamics, Chemistry, and Escape of Titan's Atmosphere
  • The Distribution of O2 on Mars from Spicam Occulations
  • Cassini INMS Solstice Mission
  • Titan Atmosphere Models Working Group (TAMWG)
  • Models for the Physical and Chemical Characteristics of Titan's Photochemical Haze

FORMER SPACECRAFT INVOLVEMENT

Voyager, Ultraviolet Spectrometer, Team Member, 1985-1989
Cassini, Ion Neutral Mass Spectrometer, Team Member, 1992-2017
Champollion, CIRCLE Experiment, Principle Investigator, 1995-1999
Deep Space 1, MICAS, Team Member, 1997-2000
Venus Express, VEX Accelerometer Experiment, Team Member
MAVEN, Co-Investigator, 2008-2015

ADS PUBLICATIONS SEARCH

NASA ADS Author search: Roger V. Yelle

SELECTED PUBLICATIONS

Yelle, R. V., et al. Perturbation of the Mars atmosphere by the near-collision with Comet C/2013 A1 (Siding Spring) 2014Icar..237..202Y

Vigren, E., et al. Increasing Positive Ion Number Densities below the Peak of Ion-Electron Pair Production in Titan's Ionosphere 2014ApJ...786...69V

Cui, J., et al. Density waves in Titan's upper atmosphere 2014JGRA..119..490C

Snowden, D., Yelle, R. V. The thermal structure of Titan's upper atmosphere, II: Energetics 2014Icar..228...64S

Zhang, X., et al. Radiative forcing of the stratosphere of Jupiter, Part I: Atmospheric cooling rates from Voyager to Cassini 2013P&SS...88....3Z

Bonnet, J.-Y., et al. Compositional and structural investigation of HCN polymer through high resolution mass spectrometry 2013IJMSp.354..193B

Koskinen, T. T., Yelle, R. V., Harris, M. J., Lavvas, P. The escape of heavy atoms from the ionosphere of HD209458b. II. Interpretation of the observations 2013Icar..226.1695K

Koskinen, T. T., Harris, M. J., Yelle, R. V., Lavvas, P. The escape of heavy atoms from the ionosphere of HD209458b. I. A photochemical-dynamical model of the thermosphere 2013Icar..226.1678K

Koskinen, T. T., et al. The density and temperature structure near the exobase of Saturn from Cassini UVIS solar occultations 2013Icar..226.1318K

Snowden, D., et al. The thermal structure of Titan's upper atmosphere, I: Temperature profiles from Cassini INMS observations 2013Icar..226..552S

Snowden, D., et al. Auroral electron precipitation and flux tube erosion in Titan's upper atmosphere 2013Icar..226..186S

Capalbo, F. J., et al. Solar Occultation by Titan Measured by Cassini/UVIS 2013ApJ...766L..16C

Vigren, E., et al. On the thermal electron balance in Titan's sunlit
upper atmosphere 2013Icar..223..234V

Cui, J., et al. The CH4 structure in Titan's upper atmosphere revisited 2012JGRE..11711006C

Tinetti, G., et al. EChO. Exoplanet characterisation observatory 2012ExA....34..311T

Hörst, S. M., et al. Formation of Amino Acids and Nucleotide Bases in a Titan Atmosphere Simulation Experiment 2012AsBio..12..809H

Vuitton, V., et al. Rapid Association Reactions at Low Pressure: Impact on the Formation of Hydrocarbons on Titan 2012ApJ...744...11V

Koskinen, T. T., et al. The mesosphere and lower thermosphere of Titan revealed by Cassini/UVIS stellar occultations 2011Icar..216..507K

Cui, J., et al. The implications of the H2 variability in Titan's exosphere 2011JGRA..11611324C

Lavvas, P., Griffith, C. A., Yelle, R. V. Condensation in Titan's atmosphere at the Huygens landing site 2011Icar..215..732L

Lavvas, P., et al. Energy deposition and primary chemical products in Titan’s upper atmosphere 2011Icar..213..233L

Lavvas, P., Yelle, R. V., Griffith, C. A. Titan’s vertical aerosol structure at the Huygens landing site: Constraints on particle size, density, charge, and refractive index 2010Icar..210..832L

Koskinen, T. T., et al. Characterizing the Thermosphere of HD209458b with UV Transit Observations 2010ApJ...723..116K

Galand, M., et al. Ionization sources in Titan's deep ionosphere 2010JGRA..11507312G

Cui, J., et al. Ion transport in Titan's upper atmosphere 2010JGRA..11506314C

Cravens, T. E., et al. Composition and Structure of the Ionosphere and Thermosphere 2010tfch.book..259C

Yelle, R. V., et al. Formation of NH3 and CH2NH in Titan's upper atmosphere 2010FaDi..147...31Y

Wahlund, J.-E., et al. On the amount of heavy molecular ions in Titan's ionosphere 2009P&SS...57.1857W

Robertson, I. P., et al. Structure of Titan's ionosphere: Model omparisons with Cassini data 2009P&SS...57.1834R

Vuitton, V., et al. Negative ion chemistry in Titan's upper atmosphere 2009P&SS...57.1558V

Thissen, R., et al. Laboratory Studies of Molecular Growth in the Titan Ionosphere 2009JPCA..11311211T

Cui, J., et al. Diurnal variations of Titan's ionosphere 2009JGRA..11406310C

Lavvas, P., Yelle, R. V., Vuitton, V. The detached haze layer in Titan's mesosphere 2009Icar..201..626L

Cui, J., et al. Analysis of Titan's neutral upper atmosphere from Cassini Ion Neutral Mass Spectrometer measurements 2009Icar..200..581C

Coustenis, A., et al. TandEM: Titan and Enceladus mission 2009ExA....23..893C

Vuitton, V., Yelle, R. V., Lavvas, P. Composition and chemistry of Titan's thermosphere and ionosphere 2009RSPTA.367..729V

Mueller-Wodarg, I., Yelle, R. Preface 2009RSPTA.367..603M

Cravens, T. E., et al. Model-data comparisons for Titan's nightside ionosphere 2009Icar..199..174C

Carrasco, N., et al. Sensitivity of a Titan ionospheric model to the ion-molecule reaction parameters 2008P&SS...56.1644C

Hörst, S. M., Vuitton, V., Yelle, R. V. Origin of oxygen species in Titan's atmosphere 2008JGRE..11310006H

Müller-Wodarg, I. C. F., et al. Horizontal structures and dynamics of Titan's thermosphere 2008JGRE..11310005M

Cui, J., Yelle, R. V., Volk, K. Distribution and escape of molecular hydrogen in Titan's thermosphere and exosphere 2008JGRE..11310004C

Yelle, R. V., Cui, J., Müller-Wodarg, I. C. F. Methane escape from Titan's atmosphere 2008JGRE..11310003Y

Moore, L., et al. Plasma temperatures in Saturn's ionosphere 2008JGRA..11310306M

Yelle, R., Lammer, H., Ip, W.-H. Aeronomy of Extra-Solar Giant Planets 2008SSRv..139..437Y

Mueller-Wodarg, I. C. F., et al. Neutral Atmospheres 2008SSRv..139..191M

Vuitton, V., Yelle, R. V., Cui, J. Formation and distribution of benzene on Titan 2008JGRE..11305007V

Jessup, K. L., Spencer, J., Yelle, R. Sulfur volcanism on Io 2007Icar..192...24J

Vuitton, V., Yelle, R. V., McEwan, M. J. Ion chemistry and N-containing molecules in Titan's upper atmosphere 2007Icar..191..722V

Agren, K., et al. On magnetospheric electron impact ionisation and dynamics in Titan's ram-side and polar ionosphere - a Cassini case study 2007AnGeo..25.2359A

De La Haye, V., et al. Cassini Ion and Neutral Mass Spectrometer data in Titan's upper atmosphere and exosphere: Observation of a suprathermal corona 2007JGRA..11207309D

Rodgers, D. H., et al. Advanced Technologies Demonstrated by the Miniature Integrated Camera and Spectrometer (MICAS) Aboard Deep Space 1 2007SSRv..129..309R

Müller-Wodarg, I. C. F., et al. Waves and horizontal structures in Titan's thermosphere 2006JGRA..11112315M

Galand, M., et al. Electron temperature of Titan's sunlit ionosphere 2006GeoRL..3321101G

Yelle, R. V. Corrigendum to “Aeronomy of extra-solar giant planets at small orbital distances” [Icarus 170 (2004) 167-179] 2006Icar..183..508Y

Vuitton, V., Yelle, R. V., Anicich (Retired), V. G. The Nitrogen Chemistry of Titan's Upper Atmosphere Revealed 2006ApJ...647L.175V

Yelle, R. V., et al. The vertical structure of Titan's upper atmosphere from Cassini Ion Neutral Mass Spectrometer measurements 2006Icar..182..567Y

Cravens, T. E., et al. Composition of Titan's ionosphere 2006GeoRL..3307105C

Waite, J. H., et al. Cassini Ion and Neutral Mass Spectrometer: Enceladus Plume Composition and Structure 2006Sci...311.1419W

Müller-Wodarg, I. C. F., et al. A global circulation model of Saturn's thermosphere 2006Icar..180..147M

Griffith, C. A., et al. Observations of Titan's Mesosphere 2005ApJ...629L..57G

Cravens, T. E., et al. Titan's ionosphere: Model comparisons with Cassini Ta data 2005GeoRL..3212108C

Waite, J. H., et al. Ion Neutral Mass Spectrometer Results from the First Flyby of Titan 2005Sci...308..982W

Waite, J. H., et al. Oxygen Ions Observed Near Saturn's A Ring 2005Sci...307.1260W

Young, L. A., et al. Gravity waves in Jupiter's stratosphere, as measured by the Galileo ASI experiment 2005Icar..173..185Y

Waite, J. H., et al. The Cassini Ion and Neutral Mass Spectrometer (INMS) Investigation 2004SSRv..114..113W

Yelle, R. V. Aeronomy of extra-solar giant planets at small orbital distances 2004Icar..170..167Y

Jessup, K. L., et al. The atmospheric signature of Io's Prometheus plume and anti-jovian hemisphere: evidence for a sublimation atmosphere 2004Icar..169..197J

Buratti, B. J., et al. 9969 Braille: Deep Space 1 infrared spectroscopy, geometric albedo, and classification 2004Icar..167..129B

Soderblom, L. A., et al. Short-wavelength infrared (1.3-2.6 μm) observations of the nucleus of Comet 19P/Borrelly 2004Icar..167..100S

Yelle, R. V., Soderblom, L. A., Jokipii, J. R. Formation of jets in Comet 19P/Borrelly by subsurface geysers 2004Icar..167...30Y

Soderblom, L. A., et al. Imaging Borrelly 2004Icar..167....4S

Majeed, T., et al. The ionospheres-thermospheres of the giant planets 2004AdSpR..33..197M

Müller-Wodarg, I. C. F., et al. On the global distribution of neutral gases in Titan's upper atmosphere and its effect on the thermal structure 2003JGRA..108.1453M

Yelle, R. V., Griffith, C. A. HCN fluorescence on Titan 2003Icar..166..107Y

Bétrémieux, Y., Yelle, R. V., Griffith, C. A. HST observation of the atmospheric composition of Jupiter's equatorial region: evidence for tropospheric C2H2* 2003Icar..163..414B

Müller-Wodarg, I. C. F., Yelle, R. V. The effect of dynamics on the composition of Titan's upper atmosphere 2002GeoRL..29w..54M

Boice, D. C., et al. The Deep Space 1 Encounter with Comet 19p/Borrelly 2002EM&P...89..301B

Soderblom, L. A., et al. Observations of Comet 19P/Borrelly by the Miniature Integrated Camera and Spectrometer Aboard Deep Space 1 2002Sci...296.1087S

Young, L. A., et al. Upper Limits on Gaseous CO at Pluto and Triton from High-Resolution Near-IR Spectroscopy 2001Icar..153..148Y

Yelle, R. V., Griffith, C. A., Young, L. A. Structure of the Jovian Stratosphere at the Galileo Probe Entry Site 2001Icar..152..331Y

Spencer, J. R., et al. Discovery of Gaseous S2 in Io's Pele Plume 2000Sci...288.1208S

Griffith, C. A., Yelle, R. V. Equilibrium Chemistry in a Brown Dwarf's Atmosphere: Cesium in Gliese 229B 2000ApJ...532L..59G

Rishbeth, H., Yelle, R. V., Mendillo, M. Perpendicular electron heating by absorption of auroral kilometric radiation 2000P&SS...48...51R

Müller-Wodarg, I. C. F., et al. The thermosphere of Titan simulated by a global three-dimensional time-dependent model 2000JGR...10520833M

Bétremieux, Y., Yelle, R. V. HST Detection of H2 Raman Scattering in the Jovian Atmosphere 1999Icar..142..324B

Stansberry, J. A., Yelle, R. V. Emissivity and the Fate of Pluto's Atmosphere 1999Icar..141..299S

Griffith, C. A., Yelle, R. V. Disequilibrium Chemistry in a Brown Dwarf's Atmosphere: Carbon Monoxide in Gliese 229B 1999ApJ...519L..85G

Griffith, C. A., Yelle, R. V., Marley, M. S. The Dusty Atmosphere of the Brown Dwarf Gliese 229B 1998Sci...282.2063G

Fox, J. L., Yelle, R. V. Hydrocarbon ions in the ionosphere of Titan 1997GeoRL..24.2179F

Young, L. A., et al. Gravity waves in Jupiter's thermosphere. 1997Sci...276..108Y

Young, L. A., et al. Gravity Waves in Jupiter's Thermosphere 1997Sci...267..108Y

Stansberry, J. A., et al. A model for the overabundance of methane in the atmospheres of Pluto and Triton 1996P&SS...44.1051S

Stansberry, J. A., Pisano, D. J., Yelle, R. V. The emissivity of volatile ices on Triton and Pluto 1996P&SS...44..945S

Yelle, R. V., McGrath, M. A. Ultraviolet Spectroscopy of the SL9 Impact Sites 1996Icar..119...90Y

Yelle, R. V., et al. Structure of Jupiter's upper atmosphere: Predictions for Galileo 1996JGR...101.2149Y

Wang, Y., Yelle, R. V. Methane heating rates in outer planet atmospheres. 1995JQSRT..54..819W

Noll, K. S., et al. HST Spectroscopic Observations of Jupiter After the Collision of Comet Shoemaker-Levy 9 1995Sci...267.1307N

Ben Jaffel, L., et al. New analysis of the Voyager UVS H Lyman-alpha emission of Saturn 1995Icar..113...91B

Beauchamp, P. M., et al. Pluto integrated camera spectrometer (PICS) instrument 1995AcAau..35...99B

Beauchamp, P. M., et al. Pluto Integrated Camera Spectrometer (PICS) instrument. 1995AcAau..35S..99B

Stansberry, J. A., et al. Mirages and the nature of Pluto's atmosphere 1994Icar..111..503S

Yelle, R. V., et al. The distribution of hydrocarbons in Neptune's upper atmosphere 1993Icar..104...38Y

Hubbard, W. B., et al. The occultation of 28 SGR by Titan 1993A&A...269..541H

Stansberry, J. A., et al. Triton's surface-atmosphere energy balance 1992Icar...99..242S

Stevens, M. H., et al. On the thermal structure of Triton's thermosphere 1992GeoRL..19..669S

Yelle, R. V. The effect of surface roughness on Triton's volatile distribution 1992Sci...255.1553Y

Yelle, R. V. Non-LTE models of Titan's upper atmosphere 1991ApJ...383..380Y

Majeed, T., Yelle, R. V., McConnell, J. C. Vibrationally excited H2 in the outer planets thermosphere - Fluorescence in the Lyman and Werner bands 1991P&SS...39.1591M

Yelle, R. V., Lunine, J. I., Hunten, D. M. Energy balance and plume dynamics in Triton's lower atmosphere 1991Icar...89..347Y

Parkinson, C. D., et al. He 584 A dayglow at Neptune 1990GeoRL..17.1709P

Hubbard, W. B., Yelle, R. V., Lunine, J. I. Nonisothermal Pluto atmosphere models 1990Icar...84....1H

Majeed, T., McConnell, J. C., Yelle, R. V. Vibrationally excited H2 in the upper atmosphere of Saturn 1990AdSpR..10..131M

Broadfoot, A. L., et al. Ultraviolet spectrometer observations of Neptune and Triton 1989Sci...246.1459B

Wallace, L., Yelle, R. V. Resonance Line Transfer Calculations by Doubling Thin Layers. II. The Use of the R II Redistribution Function 1989ApJ...346..489W

Yelle, R. V., Wallace, L. Resonance line transfer calculations by doubling thin layers. I - Comparison with other techniques. II - The use of the R-parallel redistribution function 1989ApJ...346..481Y

Yelle, R. V., Lunine, J. I. Evidence for a molecule heavier than methane in the atmosphere of Pluto 1989Natur.339..288Y

Yelle, R. V., McConnell, J. C., Strobel, D. F. The far ultraviolet reflection spectrum of Uranus - Results from the Voyager encounter 1989Icar...77..439Y

Waite, J. H., Jr., et al. Superthermal electron processes in the upper atmosphere of Uranus - Aurora and electroglow 1988JGR....9314295W

Yelle, R. V. H2 emissions from the outer planets 1988GeoRL..15.1145Y

Yelle, R. V. A new approach to resonance line scattering in planetary atmospheres 1988ApJ...332..514Y

Yelle, R. V., et al. The dependence of electroglow on the solar flux 1987JGR....9215110Y

Herbert, F., et al. The upper atmosphere of Uranus - EUV occultations observed by Voyager 2 1987JGR....9215093H

Yelle, R. V., et al. Analysis of Raman scattered Ly-alpha emissions from the atmosphere of Uranus 1987GeoRL..14..483Y

Broadfoot, A. L., et al. Ultraviolet spectrometer observations of Uranus 1987AdSpR...7..259B

Yelle, R. V., et al. Altitude variation of EUV emissions and evidence for proton precipitation at low latitudes in the Saturnian atmosphere 1986JGR....91.8756Y

Broadfoot, A. L., et al. Ultraviolet spectrometer observations of Uranus 1986Sci...233...74B

Yelle, R. V., Sandel, B. R. Uranian H Ly-alpha emission - The interstellar wind source 1986GeoRL..13...89Y

Yelle, R. V., Roesler, F. L. Geocoronal Balmer alpha line profiles and implications for the exosphere 1985JGR....90.7568Y

Yelle, R. V. High resolution geocoronal Balmer alpha observations 1984PhDT.........3Y

Budny, R., et al. Perturbation of tokamak edge plasma by laser blow-off impurity injection 1983JVST....1..837B

Fonck, R. J., Ramsey, A. T., Yelle, R. V. Multichannel grazing-incidence spectrometer for plasma impurity diagnosis: SPRED 1982ApOpt..21.2115F