Paul Withers

Conference Presentations

• Schwadron, Mannucci, Antiochos, Bhattacharjee, Gombosi, Gopalswamy, Kamalabadi, Linker, Pilewskie, Pulkkinen, Spence, Tobiska, Weimer, Withers, Bisi, Kuznetsova, Miller, Moretto, Onsager, Roussev, and Viereck (2014) Vision for the future of the LWS TR&T, Fall AGU meeting, Abstract SH33B-02
  Abstract 4K text
  Presentation not available, not lead author

• Mannucci, Schwadron, Antiochos, Bhattacharjee, Bisi, Gopalswamy, Kamalabadi Pulkkinen, Tobiska, Weimer, and Withers (2014) Strategic science to address current and future space weather needs, Fall AGU Meeting, Abstract SM24A-09
  Abstract 2K text
  Presentation not available, not lead author

• Gross, Withers, and Sojka (2014) Online Chapman layer calculator for simulating the ionosphere with undergraduate and graduate students, Fall AGU Meeting, Abstract ED53B-348
  Abstract 2K text
  Presentation not available, not lead author

• Vogt and Withers (2014) The upper ionosphere of Mars: A comparison of Mariner 9 radio occultation and MARSIS measurements, Fall AGU Meeting, Abstract P51B-3930
  Abstract 2K text
  Presentation not available, not lead author

• Girazian, Withers, Paetzold, Tellmann, and Peter (2014) Characterization of the lower layer in the dayside Venus ionosphere, DPS Meeting, Abstract 416.02
  Abstract 2K text
  Presentation not available, not lead author

• Holstein-Rathlou and Withers (2014) Atmospheric properties reconstruction from the Mars Science Laboratory entry, descent and landing, DPS Meeting, Abstract 412.01
  Abstract 3K text
  Presentation not available, not lead author

• Morgan, Withers, Gurnett, and Nemec (2014) Seasonal and solar cycle variation of the Martian ionosphere from nine years of MARSIS active sounding, 40th COSPAR meeting, Moscow, Russia, Abstract C4.3-13-14
  Abstract 47K PDF
  Presentation not available, not lead author

• Opitz, Witasse, Sanchez-Diaz, Andre, Andrews, Blelly, Dubinin, Edberg, Federov, Fraenz, Howard, Kofman, Lester, Lillis, Luhmann, Moestl, Morgan, Odstricil, Opgenoorth, Peter, Sauvaud, Withers, and Wild (2014) Solar cycle dependence of the martian space weather, AOGS meeting, Sapporo, Japan, Abstract #PS01-A025
  Abstract 3K text
  Presentation not available, not lead author

• Holstein-Rathlou and Withers (2014) Atmospheric properties reconstruction from the Mars Science Laboratory entry, descent and landing, Eighth International Conference on Mars, Abstract #1065
  Abstract 100K PDF
  Presentation not available, not lead author

• Withers, Fallows, and Gonzalez (2014) Response of the Mars ionosphere to solar flares: Analysis of MGS radio occultation data, Eighth International Conference on Mars, Abstract #1065
  Abstract 336K PDF
  Presentation 1.6M PDF

• Holstein-Rathlou and Withers (2014) Atmospheric properties reconstruction from the Mars Science Laboratory entry, descent and landing, 11th International Planetary Probe Workshop, 16-20 June 2014, Pasadena, California, Abstract #8034
  Abstract 100K PDF
  Presentation not available, not lead author

• Withers (2014) The morphology of the topside ionosphere of Mars under different solar wind conditions: Results of a multi-instrument observing campaign by Mars Express in 2010, Chapman conference on Magnetosphere-ionosphere coupling in the solar system, Yosemite, California, 9-14 February 2014
  Abstract 1K text
  Presentation 1.9M PDF

  2013

• Lester, Opgenoorth, Andrews, Dubinin, Edberg, Fraenz, Howard, Kofman, Lei, Lillis, Matta, Morgan, Nilsson, Opitz, Peter, Wild, and Withers (2013) Reduced low energy electron counts and their relationship to crustal magnetic fields at Mars, Fall AGU meeting, Abstract P21A-1714
  Presentation not available, not lead author

• Weiner and Withers (2013) Reanalysis of Mars ionospheric electron density profiles from Mariner 9, Fall AGU meeting, Abstract P21A-1692
  Presentation not available, not lead author

• Fallows, Gonzalez, Withers, and Girazian (2013) The response of the Mars ionosphere to solar flares, Fall AGU meeting, Abstract P21A-1691
  Presentation not available, not lead author

• Matta, Mendillo, and Withers (2013) Two-dimensional modeling of crustal field effects on plasma structure at Mars, Fall AGU meeting, Abstract P13C-01
  Presentation not available, not lead author

• Riousset, Paty, Lillis, Fillingim, England, Withers, and Hale (2013) Electrodynamics of the Martian dynamo region near magnetic cusps and loops using the Martin Multifluid Magnetohydrodynamic Model (M4), Fall AGU meeting, Abstract P12A-02
  Presentation not available, not lead author

• Withers (2013) Meteoric ion layers in planetary ionospheres, Fall AGU meeting, Abstract SA11B-1919
  1.8M PDF

• Girazian, Withers, Fallows, Tarrh, Paetzold, Tellmann, and Haeusler (2013) Properties of the V1 layer in the Venus ionosphere using VeRa observations from Venus Express DPS meeting, Abstract 118.03
  Abstract 1K text
  Presentation not available, not lead author

• Fallows, Gonzalez, and Withers (2013) The response of the Mars ionosphere to solar flares, DPS meeting, Abstract 313.22
  Abstract 1K text
  Presentation not available, not lead author

• Mayyasi-Matta, Mendillo, Galand, Moore, and Withers (2013) Plasma temperatures at Mars, DPS meeting, Abstract 500.09
  Abstract 1K text
  Presentation not available, not lead author

• Withers (2013) Exploring the ionosphere of Mars, UK National Astronomy Meeting, 1-5 July 2013, St. Andrews, UK
  Abstract 1K text
  Presentation 726K PDF

• Fallows, Withers, and Girazian (2013) Variation in the secondary layer of the Mars ionosphere, EGU meeting, Abstract EGU2013-13117
  Abstract 37K PDF
  Presentation not available, not lead author

• Withers, Matta, Lester, Andrews, Edberg, Nilsson, Opgenoorth, Dubinin, Fraenz, Howard, Kofman, Lei, Lillis, Morgan, Paetzold, Peter, Opitz, Witasse, and Wild (2013) Variability observed in the topside ionosphere of Mars during a multi-instrument campaign in March and April 2010, EGU meeting, Abstract EGU2013-11798
  Abstract 37K PDF
  Presentation 2.0M PDF

• Girazian, Withers, and Fallows (2013) The dependence of peak electron density on solar irradiance in the ionosphere of Mars, EGU meeting, Abstract EGU2013-11611
  Abstract 37K PDF
  Presentation not available, not lead author

• Lester, Opgenoorth, Andrews, Dubinin, Edberg, Fraenz, Howard, Kofman, Lei, Lillis, Matta, Morgan, Nilsson, Opitz, Peter, Wild, Withers, and Witasse (2013) Electron "holes" and crustal magnetic fields at Mars, EGU meeting, Abstract EGU2013-10309
  Abstract 37K PDF
  Presentation not available, not lead author

• Andrews, Duru, Morgan, Opgenoorth, Witasse, and Withers (2013) Oblique ionospheric reflections in the MARSIS data set, EGU meeting, Abstract EGU2013-7248
  Abstract 37K PDF
  Presentation not available, not lead author

• Withers, Girazian, Paetzold, Peter, Tellmann, Fillingim, Lillis, Hauesler, Hinson, Tyler, and Witasse (2013) Observations of the nightside ionosphere of Mars by the Mars Express Radio Science Experiment MaRS, EGU meeting, Abstract EGU2013-6005
  Abstract 37K PDF
  Presentation not available

• Witasse, Cardesin-Moinelo, Costa, Salah, Jakosky, Grebowsky, Lillis, Opgenoorth, Withers, and Opitz (2013) Plans for coordinated measurements with the Mars Express and MAVEN spacecraft, EGU meeting, Abstract EGU2013-2819
  Abstract 37K PDF
  Presentation not available, not lead author

  2012

• Ferreri, Withers, and Wiener (2012) Recovery of Mars ionospheric electron density profiles acquired by the Mariner 9 radio occultation instrument, Fall AGU meeting, Abstract SA51A-2140
  Abstract 2K text
  Presentation 705K PDF

• Girazian, Tarrh, Fallows, Withers, Haeusler, Paetzold, and Tellmann (2012) Comparisons between the ionospheres of Venus and Mars, Fall AGU meeting, Abstract SA51A-2139
  Abstract 2K text
  Presentation not available, not lead author

• Fallows, Girazian, and Withers (2012) Response of the M1 layer of the Mars ionosphere to solar variability, Fall AGU meeting, Abstract SA51A-2138
  Abstract 2K text
  Presentation not available, not lead author

• Andrews, Duru, Morgan, Opgenoorth, Witasse and Withers (2012) Oblique ionospheric reflections in the MARSIS data set, Fall AGU meeting, Abstract SA44A-08
  Abstract 2K text
  Presentation not available, not lead author

• Paetzold, Withers, Fillingim, Lillis, Hauesler, Hinson, Tyler, Peter, Tellmann, and Witasse (2012) Observations of the nightside ionosphere of Mars by the Mars Express Radio Science Experiment MaRS, Fall AGU meeting, Abstract SA44A-07
  Abstract 2K text
  Presentation 749K PDF

• Matta, Mendillo, and Withers (2012) Hydrogen at Mars: Effects on ion composition, Fall AGU meeting, Abstract SA44A-06
  Abstract 2K text
  Presentation not available, not lead author

• Riousset, Paty, Lillis, Fillingim, England, Withers, and Hale (2012) Modeling of Mars’ ionospheric electrodynamics under various local magnetic field topologies, Fall AGU meeting, Abstract P23A-1909
  Abstract 2K text
  Presentation not available, not lead author

• Moore, Withers, Cahoy, Beerer, Hu, Kennedy, Kingsbury, and Webber (2012) Development and validation of software to process radio occultation data: From time series of frequency residuals to vertical profiles of atmospheric and ionospheric properties, Fall AGU meeting, Abstract P22A-07
  Abstract 2K text
  Presentation 449K PDF

• Gronoff, Simon Wedlund, Mertens, Withers, Pawlowski, Parkinson, Bougher, Brain, Lillis, and Norman (2012) Comparative planetology study of extreme solar events: Mars, Venus, Titan, Earth, 9th European Space Weather Week, 5-9 November 2012, Brussels, Belgium, Unnumbered abstract
  Abstract 27K HTML
  Presentation not available, not lead author

• Withers and Pratt (2012) An observational study of the response of the thermosphere of Mars to lower atmospheric dust storms, DPS meeting, Abstract 214.06
  Abstract 27K HTML
  Presentation 989K PDF

• Fallows, Girazian, Matta, and Withers (2012) Response of the M1 layer of the Mars ionosphere to solar variability, DPS meeting, Abstract 214.05
  Abstract 26K HTML
  Presentation not available, not lead author

• Mayyasi-Matta, Withers, and Mendillo (2012) The effects of hydrogen on the ionosphere of Mars, DPS meeting, Abstract 206.02
  Abstract 24K HTML
  Presentation not available, not lead author

• Mendillo, Narvaez, and Withers (2012) Ionospheric variability at Mars, European Planetary Science Congress, Abstract EPSC2012-241
  Abstract 56K PDF
  Presentation not available, not lead author

• Witasse, Opgenoorth, Andrews, Lester, Fraenz, Morgan, Withers, Frahm, Leblanc, Barabash, Plaut, Orosei, Montmessin, Paetzold, Cardesin Moinelo, Elliot, and Howard (2012) Mars Express aeronomy and solar wind observation campaigns: Overview and selection of results, European Planetary Science Congress, Abstract EPSC2012-438
  Abstract 50K PDF
  Presentation not available, not lead author

• Withers (2012) Empirical predictions of martian surface pressure in support of the landing of Mars Science Laboratory, 9th International Planetary Probe Workshop, 18-22 June 2012, Toulouse, France, Unnumbered abstract
  Abstract 22K PDF
  Presentation 423K PDF

• Cahoy, Beerer, Marinan, Asmar, Withers, and Moore (2012) Interplanetary radio occultation CubeSat constellation, 1st Interplanetary CubeSat Workshop, Abstract B.2.1
  Abstract 1.7M PDF
  Presentation not available, not lead author

• Withers (2012) Simulations of the response of the Mars ionosphere to solar flares and solar energetic particle events, EGU meeting, Abstract EGU2012-1449
  Abstract 35K PDF
  Presentation 1.4M PDF

• Morgan, Gurnett, Duru, Dubinin, Fraenz, Opgenoorth, and Withers (2012) Flare effects on Mars’s ionosphere observed by Mars Express topside sounding, EGU meeting, Abstract EGU2012-10547
  Abstract 37K PDF
  Presentation not available, not lead author

• Withers and Matta (2012) Simulations of the ionosphere of Mars, ISSI workshop on The induced magnetosphere of Mars: Physical processes and consequences, Berne, Switzerland, 13 November 2012
  Presentation not available

• Withers (2012) Ionosphere of Mars: Miscellaneous stuff, VEX/MEX Radio Science Team Meeting, Cologne, Germany, 11 January 2012
  Presentation 2.1M PDF

  2011

• Fallows, Withers, and Girazian (2011) Variability in the M1 layer of the martian ionosphere, Fall AGU meeting, Abstract SA13A-1880
  Abstract 4K HTML
  Presentation 927K PDF

• Girazian, Withers, Fallows, Paetzold, and Tellmann (2011) How Chapman-like is the ionosphere of Mars?, Fall AGU meeting, Abstract SA13A-1879
  Abstract 5K HTML
  Presentation 632K PDF

• Matta, Lollo, Withers, and Mendillo (2011) Hydrogen species in the ionosphere of Mars, Fall AGU meeting, Abstract SA13A-1874
  Abstract 5K HTML
  Presentation 2.3M PDF

• Lollo, Withers, Fallows, Girazian, Matta, and Chamberlin (2011) Numerical simulations of the ionosphere of Mars during a solar flare, Fall AGU meeting, Abstract SA13A-1873
  Abstract 5K HTML
  Presentation 167K PDF

• Paetzold, Haeusler, Bird, Peter, Tellmann, Tyler, and Withers (2011) Radio sounding of the Martian and Venusian ionospheres, Fall AGU meeting, Abstract SA12A-01
  Abstract 5K HTML
  Presentation not available, not lead author

• Riousset, Paty, Lillis, Fillingim, England, and Withers (2011) Novel modeling of Mars ionospheric electrodynamics, Fall AGU meeting, Abstract SA11A-03
  Abstract 6K HTML
  Presentation not available, not lead author

• Pratt and Withers (2011) Effects of dust storms on the upper atmosphere of Mars, Fall AGU meeting, Abstract P21A-1646
  Abstract 4K HTML
  Presentation 2.3M PDF

• Girazian, Withers, Paetzold, and Tellmann (2011) The vertical structure of the martian ionosphere, 218th American Astronomical Society meeting, Abstract 224.09
  Abstract 26K HTML
  Presentation 527K PDF

• Matta, Mendillo, Lollo, Withers, Paetzold, and Tellmann (2011) Approaches to modeling Mars' ionosphere Using same-day observations from both hemispheres, EPSC-DPS Joint Meeting 2011, Abstract 0125
  Abstract 121K PDF
  Presentation not available, not lead author

• Withers, Fallows, Girazian, Lollo, and Matta (2011) The vertical structure of the ionosphere of Mars, EPSC-DPS Joint Meeting 2011, Abstract 0089
  Abstract 121K PDF
  Presentation not available, not presenter

• Morgan, Gurnett, Duru, Plaut, Mitrofanov, Withers, Fraenz, and Opgenoorth (2011) Response of the Martian ionosphere to a coronal mass ejection as detected by Mars Express radar sounding, EPSC-DPS Joint Meeting 2011, Abstract 1130
  Abstract 569K PDF
  Presentation not available, not lead author

• Ferri, Lewis, Withers, Aboudan, Bettanini, Colombatti, Debei, Golombek, Harri, Komatsu, Leese, Makinen, Mueller-Wodarg, Ori, Patel, Pondrelli, Siili, Tokano, Towner, and Zarnecki (2011) ExoMars Entry, Descent and Landing Science, EPSC-DPS Joint Meeting 2011, Abstract 0388
  Abstract 201K PDF
  Presentation not available, not lead author

• Riousset, Paty, Lillis, Fillingim, England, and Withers (2011) A novel modeling of Mars ionospheric electrodynamics, NSF CEDAR Aeronomy meeting
  Abstract and presentation not available
  

• Withers, Pratt, Bertaux, Montmessin, Forbes, and Moudden (2011) Observations of thermal tides in the middle atmosphere of Mars by the SPICAM instrument, The Fourth International Workshop on the Mars Atmosphere: Modelling and observation, Abstract #363
  Abstract 75K PDF
  Presentation 1.4M PDF

• Withers (2011) Vertical structure of the ionosphere of Mars, VEX/MEX Radio Science Team Meeting, Brussels, Belgium, 14 March 2011
  Presentation 2.6M PDF

• Withers (2011) Waviness in the Venus atmosphere, VEX/MEX Radio Science Team Meeting, Brussels, Belgium, 14 March 2011
  Presentation 208K PDF

• Withers (2011) Thermospheric Variability MCDP Work, MAVEN Project Science Group Meeting, Berkeley, CA, 19 October 2011
  Presentation 1.3M PDF

• Withers (2011) Planetary science (mostly atmospheres) at Boston University, Planetary Science Decadal Survey Townhall Meeting, Boston, MA, 25 March 2011
  Presentation 517K PDF

• Withers (2011) Planetary atmospheres and ionospheres, BU Astronomy department symposium, Boston, MA, 14 October 2011
  Presentation 1.0M PDF

  2010
  

• Withers (2010) An exploratory survey of the attenuation of radio signals by the ionosphere of Mars, Fall AGU meeting, Abstract #SH43A-1807
  Abstract 4K HTML
  Presentation 1.0M PDF

• Lollo, Mendillo, Withers, Matta, Paetzold and Tellmann (2010) Modeling Mars’ ionosphere with constraints from same-day observations by Mars Global Surveyor and Mars Express, Fall AGU meeting, Abstract #P52A-09
  Abstract 5K HTML
  Presentation not available, not lead author

• Matta, Withers, Lollo and Mendillo (2010) 1.5 dimensional model of the martian ionosphere, Fall AGU meeting, Abstract #P53E-1557
  Abstract 5K HTML
  Presentation not available, not lead author

• Jolitz, Brain, Lillis, Fillingim, Withers, England and Safaeinili (2010) Total electron content in the Mars ionosphere: Temporal studies and dependence on solar inputs and crustal magnetic fields, Fall AGU meeting, Abstract #SM41B-1868
  Abstract 7K HTML
  Presentation not available, not lead author

• Lollo, Mendillo, Withers, Matta, Paetzold and Tellmann (2010) Modeling Mars’ ionosphere with constraints from same-day, multi-point observations, VEX/MEX radio science team meeting, Boston, MA, 1-2 November 2010
  Presentation not available, not lead author

• Girazian and Withers (2010) Unusual features in the Mars ionosphere, VEX/MEX radio science team meeting, Boston, MA, 1-2 November 2010
  Presentation not available, not lead author

• Opgenoorth, Withers, Witasse and the MUAN team (2010) Mars upper atmosphere network, DPS meeting, Abstract #30.10
  Abstract 1K text
  Presentation 4.8M PDF

• Withers, Lillis, Witasse, Opgenoorth and the MUAN team (2010) Mars upper atmosphere network, 5th Alfven conference, Sapporo, Japan, 4-8 October 2010, Abstract P-84
  Abstract 61K PDF
  Presentation 4.8M PDF

• Withers, Matta and Mendillo (2010) The unusual electrodynamics of Mars, European Planetary Science Congress, Rome, Italy, 20-24 September 2010, Abstract EPSC2010-68
  Abstract 141K PDF
  Presentation 1.6M PDF

• Withers, Witasse, Opgenoorth and the MUAN team (2010) Mars upper atmosphere network, European Planetary Science Congress, Rome, Italy, 20-24 September 2010, Abstract EPSC2010-289 (P96)
  Abstract 141K PDF
  Presentation 4.8M PDF

• Matta and Withers (2010) Recent results from Boston University, Workshop on coordinated upper atmospheric research at Mars, Max Planck Institute for Solar System Research, Rome, Italy, 16-17 September 2010
  Presentation 633K PDF

• Withers (2010) Predicting radio occultation uncertainties, VEX/MEX radio science team meeting, Sugarbowl, CA, 3-4 August 2010
  Presentation 185K PDF

• Withers (2010) Unusual martian ionospheric features, VEX/MEX radio science team meeting, Sugarbowl, CA, 3-4 August 2010
  Presentation 464K PDF

• Withers, Witasse and Opgenoorth (2010) Mars upper atmosphere network, 38th COSPAR meeting, Bremen, Germany, Abstract C32-0044-10
  Abstract 27K PDF
  Presentation not available, very similar to other 2010 presentations on this topic

• Withers (2010) Attenuation of radio signals by the ionosphere of Mars: Theoretical development and exploratory survey, meeting of the Living With a Star Targeted Research and Technology Focus Team on “Extreme space weather events in the solar system”, Los Angeles, CA, 7 July 2010
  Presentation 1.3M PDF

• Dhillon, Opgenoorth, Rosenqvist, Lester, Brain, Withers, Edberg and Milan (2010) Martian ionospheric conductivities in the magnetic pileup and crustal field regions, EGU meeting, Abstract EGU2010-11271
  Abstract 35K PDF
  Presentation not available, not lead author

• Opgenoorth, Dhillon, Rosenqvist, Lester, Edberg, Milan, Withers and Brain (2010) Dayside ionospheric conductivities at Mars, EGU meeting, Abstract EGU2010-14232
  Abstract 37K PDF
  Presentation not available, not lead author

• Withers (2010) The nightside ionosphere of Mars, VEX/MEX radio science team meeting, Bonn, Germany, 18-19 March 2010
  Presentation 1.2M PDF

• Withers and Matta (2010) Recent results from Boston University, Workshop on coordinated upper atmospheric research at Mars, Max Planck Institute for Solar System Research, Katlenburg-Lindau, Germany, 25-26 January 2010
  Presentation 932K PDF

• Withers and Lollo (2010) Thermospheric variability MCDP work, MAVEN Project Science Group meeting, Berkeley, CA, 20-22 October 2010
  Presentation 2.2M PDF

• Pratt, Russo, Withers, Bertaux and Montmessin (2010) Observations of thermal tides in the atmosphere of Mars by the SPICAM instrument, DPS meeting, Abstract #30.01
  Abstract 1K text
  Presentation 962K PDF

• Withers (2010) Oscillations in Venus neutral atmosphere, VEX/MEX radio science team meeting, Sugarbowl, CA, 3-4 August 2010
  Presentation 779K PDF

• Withers (2010) Rediscovering old datasets, VEX/MEX radio science team meeting, Sugarbowl, CA, 3-4 August 2010
  Presentation 40K PDF

• Mueller-Wodarg, Rosenblatt, Bruinsma, Yelle, Svedhem, Forbes, Withers, Keating and Lopez-Valverde (2010) The polar thermosphere of Venus, 38th COSPAR meeting, Bremen, Germany, C31-0009-10
  Abstract 29K PDF
  Presentation not available, not lead author

• Withers (2010) Venera 15/16 ionospheric profiles, VEX/MEX radio science team meeting, Bonn, Germany, 18-19 March 2010
  Presentation 383K PDF

• Withers (2010) Trajectory and atmospheric structure reconstruction from entry probes: Demonstration of a real-time reconstruction technique using a simple direct-to-Earth radio link, DPS meeting, Abstract #30.11
  Abstract 1K text
  Presentation 322K PDF

• Withers and Catling (2010) Results from the Phoenix Atmospheric Structure Experiment, 7th International Planetary Probe Workshop, 14-18 June 2010, Barcelona, Spain
  Abstract 73K PDF
  Presentation 1.8M PDF

• Withers (2010) Radio tracking of Phoenix during its landing on Mars, VEX/MEX radio science team meeting, Bonn, Germany, 18-19 March 2010
  Presentation 442K PDF

  2009
  

• Dhillon, Rosenqvist, Opgenoorth, Withers, Brain and Lester (2009) Studies of martian ionospheric conductivities undertaken using Mars Global Surveyor and Mars Express data, Fall AGU meeting, Abstract #P23A-1242
  Abstract 4K HTML
  Presentation not available, not lead author

• Opgenoorth, Rosenqvist, Dhillon, Lester, Withers and Brain (2009) Ionospheric conductivities at planets and planet-like bodies without internal magnetic field, Fall AGU meeting, Abstract #P11B-1225
  Abstract 5K HTML
  Presentation not available, not lead author

• Withers (2009) Simulations of the effects of extreme solar flares on technological systems at Mars, meeting of the Living With a Star Targeted Research and Technology Focus Team on "Extreme space weather events in the solar system", San Francisco, CA, 13 December 2009
  Presentation 957K PDF

• Withers, Lollo, Mendillo, Paetzold and Tellmann (2009) Comparisons and simulations of same-day observations of the ionosphere of Mars by radio occultation experiments on Mars Global Surveyor and Mars Express, DPS meeting, Abstract #54.08
  Abstract 24K HTML
  Presentation 645K PDF

• Withers, Espley, Lillis and Morgan (2009) The ionosphere of Mars: A community white paper for the planetary decadal survey, DPS meeting, Abstract #16.20
  Abstract 23K HTML
  Presentation 113K PDF

• Lollo, Withers and Mendillo (2009) Modeling Mars’ ionosphere with constraints from same-day, multi-point observations, VEX/MEX radio science team meeting, Port Townsend, WA, 27-28 August 2009
  Presentation not available, not lead author

• Withers and Mendillo (2009) The effects of solar flares on planetary ionospheres, AOGS meeting, Abstract #PS14-A004, Singapore, 10-14 August 2009
  Abstract 97K PDF
  Presentation 1.1M PDF

• Withers, Espley, Lillis and Morgan (2009) The ionosphere of Mars and its importance for climate evolution, MEPAG meeting, Providence, RI, 29-30 July 2009
  Presentation 48K PDF

• Withers (2009) Observations of metal ion layers across the solar system, NSF CEDAR Aeronomy Meeting, Sante Fe, NM, 28 June - 2 July 2009
  Presentation 1.4M PDF
  Workshop report 5K text

• Withers (2009) Simulations of the effects of extreme solar flares on technological systems at Mars, meeting of the Living With a Star Targeted Research and Technology Focus Team on "Extreme space weather events in the solar system", Melbourne, FL, 8 June 2009
  Presentation 595K PDF

• Withers, Christou, Mendillo, Paetzold, Peter, Tellmann and Vaubaillon (2009) Observations of the effects of meteors on the ionospheres of Venus, Earth and Mars, International Conference on Comparative Planetology: Venus-Earth-Mars, ESTEC, 11-15 May 2009
  Abstract 148K PDF
  Presentation 970K PDF

• Chamberlin, Lu, Sternovsky, Withers and Woods (2009) Using the Flare Irradiance Spectral Model (FISM) to study the response of the Earth, Mars and Moon to solar flares, EGU meeting, Abstract EGU2009-5970
  Abstract 123K PDF
  Presentation not available, not lead author

• Withers (2009) Estimating uncertainties in measurements of atmospheric properties by radio occultations, VEX/MEX radio science team meeting, Cologne, 16-17 April 2009
  Presentation 143K PDF

• Withers, Bertaux, Montmessin, Pratt and Russo (2009) Observations of tides and temperatures in the martian atmosphere by Mars Express SPICAM stellar occultations, EGU meeting, Abstract EGU2009-5355
  Abstract 112K PDF
  Presentation 2.0M PDF

• Withers and Matta (2009) Research at Boston University on the upper atmosphere of Mars, Workshop on coordinated upper atmospheric research at Mars, ESTEC, 17-19 March 2009
  Presentation 652K PDF

• Paetzold, Haeusler, Tellmann, Bird, Hinson, Tyler and Withers (2009) The ionospheres of Venus and Mars - A comparison of Venus Express and Mars Express observations, DPS meeting, Abstract #48.04
  Abstract 23K HTML
  Presentation not available, not lead author

• Withers and Catling (2009) Preliminary reconstruction of martian atmospheric structure from Phoenix entry measurements, Fall AGU meeting, Abstract #P54B-08
  Abstract 3K HTML
  Presentation 514K PDF

• Withers (2009) A simple method for supporting future landers by predicting surface pressure on Mars, AOGS meeting, Abstract #PS08-A021, Singapore, 10-14 August 2009
  Abstract 99K PDF
  Presentation 845K PDF

• Tellmann, Withers, Paetzold, Haeusler, Tyler and Hinson (2009) The polar atmosphere as seen by the radio science experiment MaRS on Mars Express, Third International Workshop on Mars Polar Energy Balance and the CO2 Cycle, Abstract #7024, Seattle, WA, 21-24 July 2009
  Abstract 131K PDF
  Presentation not available, not lead author...

• Withers and Tellmann (2009) Simplifying the martian carbon dioxide cycle: An empirical method for predicting surface pressure, Third International Workshop on Mars Polar Energy Balance and the CO2 Cycle, Abstract #7009, Seattle, WA, 21-24 July 2009
  Abstract 131K PDF
  Presentation 581K PDF

• Withers (2009) MEX surface pressure measurements, VEX/MEX radio science team meeting, Cologne, 16-17 April 2009
  Presentation 353K PDF

  2008
  

• Withers (2008) Simulations of the effects of extreme solar flares on technological systems at Mars, meeting of the Living With a Star Targeted Research and Technology Focus Team on "Extreme space weather events in the solar system", San Francisco, CA, 14 December 2008
  Presentation 534K PDF

• Withers (2008) Mars ionospheric research at Boston University, VEX/MEX Radio Science Team Meeting, Brussels, 15-16 November 2008
  Presentation 117K PDF

• Withers, Paetzold and Christou (2008) Meteor layers in the martian and venusian ionospheres: Their connection to meteor showers, Europlanet N3 4th Strategic Workshop on Meteor Studies, Cologne, September 2008
  Presentation 865K PDF

• Paetzold and Withers (2008) Plasma layers in the terrestrial, martian and venusian ionosphere: Their origins and physical characteristics, Europlanet N3 4th Strategic Workshop on Meteor Studies, Cologne, September 2008
  Presentation 1.3M PDF

• Christou, Griffiths, McAuliffe, Koschny, Paetzold, Oberst, Trigo-Rodriguez, Vaubaillon, Withers, Chappelow and Patel (2008) A multi-instrument ExoMars study of meteoroid effects on the martian environment, European Planetary Science Congress, Abstract EPSC2008-A-00196
  Abstract 275K PDF
  Presentation not available, not lead author

• Paetzold, Tellmann, Peter, Mendillo, Withers, Haeusler, Hinson and Tyler (2008) The structure of the Mars ionosphere, European Planetary Science Congress, Abstract EPSC2008-A-00348
  Abstract 116K PDF
  Presentation not available, not lead author

• Paetzold, Tellmann, Peter, Mendillo, Withers, Haeusler, Hinson and Tyler (2008) The structure of the Mars ionosphere, 37th COSPAR meeting, Montreal, Abstract C32-0010-08
  Abstract 28K PDF
  Presentation not available, not lead author

• Withers (2008) Variability of the ionosphere of Mars, 37th COSPAR meeting, Montreal, Abstract C32-0011-08
  Abstract 27K PDF
  Presentation 3.1M PDF

• Mendillo, Niehof, Garcia, Prested, McGregor, Viall, Moore, Withers, Martinis, and Stephan (2008) Can Equatorial Spread-F occur on other planets?, 12th International Symposium on Equatorial Aeronomy, 18-24 May 2008, Crete, Greece.
  Abstract 43K PDF
  Presentation not available, not lead author

• Paetzold, Tellmann, Peter, Mendillo, Withers, Hausler, Hinson, and Tyler (2008) The structure of the Mars ionosphere, EGU meeting, Abstract EGU2008-A-06804
  Abstract 7K PDF
  Presentation not available, not lead author

• Christou, Vaubaillon and Withers (2008) Present and future observations of a meteor shower in the martian atmosphere, UK National Astronomy Meeting, Abstract P15/112
  Abstract 2K text
  Presentation not available, not lead author

• Withers, Mendillo, Hinson, and Cahoy (2008) Morphology of meteoric plasma layers in the ionosphere of Mars as observed by the Mars Global Surveyor Radio Science Experiment, EGU meeting, Abstract EGU2008-A-02893
  Abstract 7K PDF
  Presentation 930K PDF

• Withers (2008) New data products from the Mars Odyssey Accelerometer: Report on Scientific Implications, Data Processing, Validation and Archiving, Third International Workshop on the Mars Atmosphere: Modeling and Observations, Williamsburg, 10-13 November 2008, Abstract #9035
  Abstract 340K PDF
  Presentation 442K PDF

• Withers, Bendersky, Keller and Murphy (2008) Upper atmospheric density profiles from the Mars Odyssey Accelerometer: Report on data processing, archiving plans, and scientific analysis, DPS meeting, Abstract #14.07
  Abstract 3K HTML
  Presentation 1.0M PDF

• Mueller-Wodarg, Bruinsma, Forbes, Yelle, Keating, Withers and Lopez-Valverde (2008) The structure of Venus' upper atmosphere and forthcoming measurements by the Venus Express Atmospheric Drag Experiment, 37th COSPAR meeting, Montreal, Abstract C33-0023-08
  Abstract 33K PDF
  Presentation not available, not lead author

• Keating, Mueller-Wodarg, Forbes, Yelle, Bruinsma, Withers, Lopez-Valverde, Theriot and Bougher (2008) Future drag measurements from Venus Express, 37th COSPAR meeting, Montreal, Abstract C33-0024-08
  Abstract 34K PDF
  Presentation not available, not lead author

• Withers, Barnes, Justus, Justh, Kass, Montabone and Rafkin (2008) Comparison of atmospheric observations and predictions for the atmospheric entries of Spirit and Opportunity, 39th LPSC, Abstract #2175
  Abstract 41K PDF
  Presentation 936K PDF

  2007
  

• Paetzold, Withers, Tellmann, Mendillo, Peter, Hausler, Hinson, and Tyler (2007) The structure of the Mars ionosphere (2007), Fall AGU meeting, Abstract P32A-01
  Abstract 4K HTML
  Presentation not available, not lead author

• Withers (2007) New theoretical tools for studying ionospheric electrodynamics, Fall AGU meeting, Abstract SA51A-0237
  Abstract 4K HTML
  Presentation 703K PDF

• Paetzold, Tellmann, Peter, Hausler, Hinson, Tyler, Mendillo, and Withers (2007) The structure of the ionosphere of Mars as observed by the Mars Express Radio Science Experiment, European Mars Science and Exploration Conference: Mars Express and ExoMars, November 12-16, 2007, ESA-ESTEC, Noordwijk, The Netherlands, Abstract #1120009
  Abstract 15K PDF
  Presentation not available, not lead author

• Christou, Griffiths, McAuliffe, Koschny, Paetzold, Oberst, Trigo-Rodriguez, Vaubaillon, Withers and Chappelow (2007) A multi-instrument ExoMars study of meteoroid effects on the martian environment, European Mars Science and Exploration Conference: Mars Express and ExoMars, November 12-16, 2007, ESA-ESTEC, Noordwijk, The Netherlands, Abstract #1119183
  Abstract 25K PDF
  Presentation not available, not lead author

• Withers, Mendillo, Paetzold, Tellmann, Christou, and Vaubaillon (2007) Comparison of ionospheric observations and dynamical predictions of meteor showers at Mars, DPS meeting, Abstract #59.08
  Abstract 1K txt
  Presentation 250K PDF

• Christou, Vaubaillon, and Withers (2007) Annual and outburst meteor activity in the atmospheres of Venus and Mars, Meteoroids 2007, June 11-15, 2007, Barcelona, Spain
  Abstract 722K PDF
  Presentation not available, not lead author

• Mendillo and Withers (2007) Simultaneous radio sounding of the ionospheres of Earth and Mars during a solar flare, Symposium in honor of Professor Bodo Reinisch's 70th birthday, University of Massachusetts - Lowell, 29 April 2007
  Abstract not required
  Presentation 1.4M PDF

• Withers, Wroten, Mendillo, and Chamberlin (2007) Simulations of the Mars ionosphere during a solar flare, Spring AGU meeting, Abstract SA31B-05
  Abstract 4K HTML
  Presentation 495K PDF

• Withers, Wroten, Mendillo, Chamberlin, and Woods (2007) Modeling the effects of solar flares on the ionosphere of Mars, EGU meeting, Abstract EGU2007-A-05089
  Abstract 30K PDF
  Presentation 288K PDF

• Withers, Paetzold, Mendillo, Tellman, Hausler, Hinson, and Tyler (2007) New observations of the topside ionosphere at Mars, EGU meeting, Abstract EGU2007-A-09435
  Abstract 30K PDF
  Presentation 3.0M PDF

• Paetzold, Withers, Tellman, Mendillo, Hausler, Hinson, and Tyler (2007) Correlation between third layer formation in the Martian ionosphere and meteor streams at Mars, EGU meeting, Abstract EGU2007-A-09454
  Abstract 30K PDF
  Presentation not available, not lead author

  2006
  

• Withers, Mendillo, and Hinson (2006) Space weather effects on the Mars ionosphere due to solar flares and meteors, European Planetary Science Congress, Abstract EPSC2006-A-00190
  Abstract 8K PDF
  Presentation 396K PDF

• Withers (2006) Comparative aeronomy at Earth and Mars, CEDAR Meeting, Santa Fe, 23 - 27 June. Final CEDAR Postdoc report.
  Abstract 1K PDF
  Presentation 470K PDF

• Mendillo and Withers (2006) Effects of solar flares on Earth and Mars, Spring AGU meeting, Abstract U52A-02
  Abstract 4K HTML
  Presentation not available, not lead author...

• Withers, Mendillo, and Rishbeth (2006) Ionospheric disturbances at Mars: Implications for radio propagation, EGU meeting, Abstract EGU06-J-02444
  Abstract 37K PDF
  Presentation 789K PDF

• Withers (2006) Analysis of Accelerometer data from aerobraking, Mars Odyssey Project Science Group Meeting, 14 - 17 November, 2006, Mauni Lani hotel, Big Island, Hawaii
  No Abstract
  Presentation 490K PDF

• Withers, Murphy, Gueth, Bougher, and Mendillo (2006) Mars Odyssey Accelerometer results, DPS meeting, Abstract #73.03
  Abstract 1K txt
  Presentation 371K PDF

• Withers (2006) Determination of upper atmospheric properties on Mars and other bodies using satellite drag/aerobraking measurements, European Planetary Science Congress, Berlin Abstract EPSC2006-A-00009
  Abstract 4K PDF
  Presentation 322K PDF

• Ball, Mueller-Wodarg, Lewis, Zarnecki, Hathi, Leese, Towner, Ferri, Colombatti, Fulchignoni, and Withers (2006) Huygens Atmospheric Structure Instrument entry accelerometer: Application to Mars and Venus, 4th International Planetary Probe Workshop, June 27 - 30, Pasadena
  Abstract and presentation not available, not lead author...

  2005
  

• Withers, Mendillo, Wroten, Rishbeth, Hinson, and Reinisch (2005) Observations of the effects of solar flares on Earth and Mars, Fall AGU meeting, Abstract SA53B-1165
  Abstract 4K HTML
  Presentation 427K PDF

• Withers, Mendillo, Rishbeth, Hinson, and Arkani-Hamed (2005) Ionospheric characteristics above martian crustal magnetic anomalies, DPS meeting, Abstract #33.02
  Abstract 2K HTML
  Presentation 345K PDF

• Schoendorf, Siebert, Mendillo, Withers, Wilson (2005) A new model of the solar wind interaction with the Mars ionosphere, Spring AGU meeting, Abstract #P21F-06
  Abstract 1K text
  Presentation not available, not lead author...

• Withers and Mendillo (2005) The response of an ionosphere to changes in the solar F10.7 flux: Comparison of Venus, Earth, and Mars, Spring AGU meeting, Abstract SA41A-03
  Abstract 1K text
  Presentation 1.4M PDF

• Withers (2005) Atmospheric profiles from Spirit and Opportunity, Spring AGU meeting, Abstract P24A-02
  Abstract 1K text
  Presentation 103K PDF

• Montabone, Lewis, Read, and Withers (2005) The weather on Mars at the time of MERs and Beagle 2 landing, European Geosciences Union Meeting, Abstract EGU05-A-09628
  Abstract 30K PDF
  Presentation not available, not lead author...

  2004
  

• Schoendorf, Mendillo, Withers, Wilson (2004) A new model of the solar wind interaction with Mars, DPS meeting, Abstract #37.03
  Abstract 1K text
  Presentation not available, not lead author...

• Withers, Mendillo, and Hinson (2004) The martian ionosphere in regions of crustal magnetic fields, DPS meeting, Abstract #26.09
  Abstract 1K text
  Presentation 339K PDF

• Mendillo and Withers (2004) Mars ionospheric studies using the MGS Radio Science Experiment, 34th COSPAR Scientific Assembly, Abstract #COSPAR04-A-02002
  Abstract 4K PDF
  Presentation not available, not lead author...

• Mendillo, Withers, and MIRI Team (2004) Approaches to a Mars international reference ionosphere, 34th COSPAR Scientific Assembly, Abstract #COSPAR04-A-02072
  Abstract 4K PDF
  Presentation not available, not lead author...

• Withers (2004) The influence of solar variability on the ionospheres of Earth and Mars, CEDAR Meeting, Sante Fe, 27 June - 2 July. Interim CEDAR Postdoc Report.
  Abstract 1K text
  Presentation 95K PDF

• Withers (2004) Getting your hands on Mars data and some sample science, CEDAR Meeting, Sante Fe, 27 June - 2 July. Talk at Comparative Aeronomy on Earth and Mars workshop.
  Plan of Workshop 30K PDF
  Schedule of Workshop 9K PDF
  Presentation 2.2M PDF

• Withers and Mendillo (2004) Testing simple parameterizations for the basic characteristics of the martian ionosphere, Spring AGU meeting, Abstract #SA24A-05
  Abstract 4K HTML
  Presentation 196K PDF

• Withers, Martinis, Moore, Wilson, Wroten, and Mendillo (2004) Theoretical simulations of the martian ionosphere and comparisons to observations, Spring AGU meeting, Abstract SA14A-04
  Abstract 5K HTML
  Presentation 267K PDF

• Bougher, Keating, and Withers (2004) Mars aerobraking data and its interpretation with applications to future Mars missions, 34th COSPAR Scientific Assembly, Abstract #COSPAR04-A-00358
  Abstract 5K PDF
  Presentation not available, not lead author...

• Withers (2004) Should we believe atmospheric temperatures measured by entry accelerometers travelling at "slow" near-sonic speeds?, 2nd International Planetary Probe Workshop, August 23 - 27, NASA Ames
  Abstract 2K text
  Presentation 102K PDF

  2003
  

• Withers, Bougher, and Keating (2003) Identification of topographically-controlled thermal tidal modes in the martian upper atmosphere, 6th International Mars Conference, July 20 - 25, Pasadena, California, Abstract #3069
  Abstract 15K PDF
  Presentation not available, constructed from my PhD defence talk

• Bougher, Engel, and Withers (2003) The NCAR Mars Thermospheric General Circulation Model: A review, Mars atmosphere modelling and observations workshop, Granada, Spain, January 13-15, 2003
  Abstract 73K PDF
  Presentation not available, not lead author...

• Withers, Towner, Hathi, and Zarnecki (2003) Review of the trajectory and atmospheric structure reconstruction for Mars Pathfinder, International Workshop on Planetary Probe Atmospheric Entry and Descent Trajectory Analysis and Science, Lisbon, Portugal, October 6 - 9, 2003
  Abstract 24K PDF
  Presentation 1.4M PDF

• Withers (2003) Scientific uses of crude telemetry during Mars atmospheric entry, DPS meeting, Abstract #14.24
  Abstract 2K HTML
  Presentation 321K PDF

  2002
  

• Withers, Bougher, and Keating (2002) Winds in the martian upper atmosphere from MGS aerobraking density profiles, Fall AGU meeting, Abstract #P61C-0353
  Abstract 4K HTML
  Presentation 484K PDF

• Withers, Bougher, and Keating (2002) Measurements of winds in the martian upper atmosphere from the MGS Accelerometer, DPS meeting, Abstract #5.05
  Abstract 3K HTML
  Presentation 149K PDF

• Withers, Bougher, and Keating (2002) MGS Accelerometer-derived profiles of upper atmospheric pressures and temperatures: Similarities, differences, and winds, Spring AGU meeting, Abstract #P41A-10
  Abstract 5K HTML
  Presentation 604K PDF

• Withers, Zarnecki, Towner, and Hathi (2002) Trajectory reconstruction for Beagle 2, 6th Huygens Descent Trajectory Working Group Meeting
  Presentation 49K PDF

• Withers, Hathi, Towner, and Zarnecki (2002) Development of software for analysing entry accelerometer data in preparation for the Beagle 2 mission to Mars: Towards a publicly available toolkit, 33rd LPSC, Abstract #1203
  Abstract 29K PDF
  Presentation 642K PDF

• Withers and Neumann (2002) Enigmatic northern plains of Mars, Geoplanets Summer School, Italy
  No abstract
  Presentation missing

• Withers, Lorenz, and Neumann (2002) Errors in Viking Lander atmospheric profiles discovered using MOLA topography, 33rd LPSC, Abstract #1294
  Abstract 22K PDF
  Presentation 1.6M PDF

  2001
  

• Bougher, Keating, Forbes, Murphy, Hollingsworth, Wilson, and Withers (2001) The upper atmospheric wave structure of Mars as determined by Mars Global Surveyor, Fall AGU meeting, Abstract #P32E-12
  Abstract 5K HTML
  Presentation not available, not lead author...

• Withers, Bougher, and Keating (2001) Unpredictable day-to-day variability in the martian upper atmosphere, DPS meeting, Abstract #19.29
  Abstract 3K HTML
  Presentation not available, constructed in haste from previous presentations and papers in preparation...

• Withers, Bougher, and Keating (2001) Harmonic analysis of zonal density structures in martian upper atmosphere, Spring AGU meeting, Abstract #P41A-05
  Abstract 3K text
  Presentation 1.5M PDF figures and 52K PDF text

• Withers and Bougher (2001) Understanding the martian upper atmosphere with the MGS Accelerometer, 4th Lunar and Planetary Laboratory internal conference.
  Abstract 19K PDF
  Presentation just like the 2001 Spring AGU poster - 1.5M PDF figures and 52K PDF text

• Keating, Tolson, Wilson, Dwyer, Bougher, Withers, and Forbes (2001) Persistent planetary-scale wave-2 and wave-3 density variations observed in Mars upper atmosphere from MGS accelerometer experiment, 26th EGS General Assembly, Session #PS2.02
  Abstract 7K PDF
  Presentation not available, not lead author...

• Withers (2001) Technical Report to the Open University on atmospheric structure reconstruction using the Beagle 2 Accelerometer, presentation to the Open University upon completion of report
  103K PDF

• Withers and Neumann (2001) A test of the martian northern ocean hypothesis, 4th Lunar and Planetary Laboratory internal conference.
  Abstract 493K PDF
  Presentation is a mix of my 33rd Brown-Vernadsky Microsymposium presentation (6.8M PDF) and my April 2001 Brown MOLA presentation (1.3M PDF)

• Withers and Neumann (2001) Ridges in the martian northern plains, 33rd Brown-Vernadsky Microsymposium
  No abstract
  Presentation 6.8M PDF

• Withers (2001) Meteor storm evidence against the recent formation of lunar crater Giordano Bruno, 4th Lunar and Planetary Laboratory internal conference.
  Abstract 21K PDF
  Presentation just like the 32nd LPSC poster - 678K PDF

• Withers (2001) Meteor storm evidence against the recent formation of lunar crater Giordano Bruno, 32nd LPSC, Abstract #1007.
  Abstract 108K PDF
  Presentation 678K PDF

• Withers and Lorenz (2001) Simple tests of simple climate models, Spring AGU meeting, Abstract #U32A-05
  Abstract 3K text
  Presentation 42K PDF figures and 17K PDF text

• Grier and 25 colleagues, including Withers (2001) Defining long term goals and setting priorities for education and outreach, 2003 to 2013 - Panel Report, DPS meeting, Abstract #19.29
  Abstract 3K HTML
  Presentation not available, not lead author...

  2000
  

• Keating, Dwyer, Wilson, Tolson, Bougher, Withers, and Forbes (2000) Evidence of large global diurnal Kelvin wave in Mars upper atmosphere, DPS meeting, Abstract #50.02
  Abstract 3K HTML
  Presentation not available, not lead author...

• Bougher, Withers, Murphy, Roble, and Keating (2000) Longitude structure in the Mars upper atmosphere : Characterization and model simulations (Solicited Key Note Paper), 33rd COSPAR Scientific Assembly, Abstract #C3.2-0011
  Abstract 31K PDF
  Presentation not available, not lead author...

• Withers, Bougher, and Keating (2000) New results from the Mars Global Surveyor Accelerometer, 31st LPSC, Abstract #1268
  Abstract 351K PDF
  Presentation 616K PDF

• Withers and Neumann (2000) Shallow ridges in the martian northern plains, Fall AGU meeting, Abstract #P62B-02
  Abstract 7K PDF
  Presentation 2204K PDF

• Lorenz, Lunine, Withers, and McKay (2000) Latitudinal temperature contrasts on Titan and the principle of maximum entropy production, DPS meeting, Abstract #17.07
  Abstract 3K HTML
  Presentation not available, not lead author...

• Withers (2000) Angle of repose-limited shapes of asteroids, 3rd Lunar and Planetary Laboratory internal conference
  Abstract 30K PDF
  Presentation 880K PDF

• Withers (2000) Angle of repose-limited shapes of asteroids, 31st LPSC, Abstract #1270
  Abstract 42K PDF
  Presentation 150K PDF

  1999
  

• Withers, Bougher, and Keating (1999) The martian upper atmosphere during phase 2 of Mars Global Surveyor aerobraking: comparison to predictions, Fifth International Conference on Mars, Abstract #6073.
  Abstract 110K PDF
  Presentation 640K PDF
  Also some text to accompany a video shown in a poster session at the above conference. Hopefully the video will appear here soon. 36K PDF

• Withers, Bougher, and Keating (1999) The martian upper atmosphere as revealed by Mars Global Surveyor's aerobraking, 2nd Lunar and Planetary Laboratory internal conference.
  Abstract 33K PDF
  Presentation not available, not lead author

Invited Presentations (External)

• The ionosphere of Mars before the arrival of MAVEN (2014) MIT Haystack Observatory, 2014
  4.3M PDF

• The ionosphere of Mars before the arrival of MAVEN (2014) University of Massachusetts - Lowell, 2014
  3.7M PDF

• Space physics of the ionosphere of Mars (2013) MIT, 2013
  2.7M PDF

• Exploring the ionosphere of Mars (2012) Swedish Institute of Space Physics (IRF), Uppsala, Sweden, 2012
  2.8M PDF

• Exploring the ionosphere of Mars (2012) University of Iowa, Physics and Astronomy, 2012
  2.7M PDF

• The ionosphere of Mars never looked like this before (2012) University of Michigan, Atmospheric, Oceanic, and Space Sciences, 2012
  1.1M PDF

• Getting the most out of entry probes (2012) Georgia Tech, School of Earth and Atmospheric Sciences, 2012
  947K PDF

• How the ionosphere of Mars works (2012) MIT EAPS, 2012
  2.3M PDF

• Results from the Phoenix Atmospheric Structure Experiment (2010) Withers and Catling, 7th International Planetary Probe Workshop, 14-18 June 2010, Barcelona, Spain
  1.8M PDF

• The unusual electrodynamics of Mars (2010) Withers, Matta and Mendillo, European Planetary Science Congress, Rome, Italy, 20-24 September 2010
  1.6M PDF

• The effects of solar flares on planetary ionospheres (2009) Withers and Mendillo, AOGS meeting, Singapore, August 2009
  1.1M PDF

• Exploring planetary ionospheres (2009) Withers, Center for Atmospheric Research, University of Massachusetts - Lowell, May 2009
  3.1M PDF

• Meteor layers in the martian and venusian ionospheres: Their connection to meteor showers (2008) Withers, Paetzold and Christou, Europlanet N3 4th Strategic Workshop on Meteor Studies, Cologne, September 2008
  865K PDF

• Plasma layers in the terrestrial, martian and venusian ionosphere: Their origins and physical characteristics (2008) Paetzold and Withers, Europlanet N3 4th Strategic Workshop on Meteor Studies, Cologne, September 2008
  1.3M PDF

• Variability of the ionosphere of Mars, 37th COSPAR meeting, Montreal, Abstract C32-0011-08
  Abstract 27K PDF
  Presentation 3.1M PDF

• The Mars ionosphere: More than a Chapman layer, Armagh Observatory, 2008
  1.3M PDF

• The Mars ionosphere: More than a Chapman layer, University of Cologne, 2007
  1.3M PDF

• The top of the martian atmosphere, University College London, 2007
  1.8M PDF

• Determination of upper atmospheric properties on Mars and other bodies using satellite drag/aerobraking measurements, European Planetary Science Congress, Berlin 2006, Abstract EPSC2006-A-00009
  Abstract 4K PDF
  Presentation 322K PDF

• Huygens at Titan, MIT, 2005
  1.9M PDF

• Exploring Saturn with Cassini/Huygens, Tufts University, 2004
  4.6M PDF

• Oceans on Mars?, Imperial College London, 2001
  Presentation not available

Invited Presentations (Internal)

• Mars, 2014, Guest lecture in Andrew West's AS105 class at Boston University
  12M PDF

• The MAVEN mission to Mars and my role in it, 2014, Boston University Astronomical Society
  6.2M PDF

• Integration of MAVEN neutral and plasma measurements, 2014, Boston University’s Center for Space Physics
  488K PDF

• Seven minutes of terror – A look at Curiosity’s safe arrival on Mars, Boston University Astronomical Society, 2012
  959K PDF

• Mars: A foundation for exploring planetary atmospheres and ionospheres, Boston University’s Department of Astronomy, 2010
  1.9M PDF

• A better way of modeling ionospheric electrodynamics, Boston University's Center for Space Physics, 2008
  410K PDF

• The mean molecular mass of Titan's atmosphere, Boston University's Center for Space Physics, 2007
  139K PDF

• Analysis of aerobraking accelerometer data from Mars, Boston University's Center for Space Physics, 2007
  507K PDF

• Space Physics at Mars, Boston University's Center for Space Physics, 2006
  1.3M Powerpoint

• The effects of solar flares on the ionospheres of Earth and Mars, Boston University's Center for Space Physics, 2005
  397K PDF

• How does the magnetic dield of Mars affect the ionosphere? Boston University's Center for Space Physics, 2004
  307K PDF

• The martian atmosphere, 2004, Lecture given in Bill Oliver's ENG SC566 class at Boston University
  800K PDF

• Tides in the martian upper atmosphere - And other topics, Boston University's Center for Space Physics, 2003
  1.2M PDF

• The martian upper atmosphere, 2003, Lecture given in Roger Yelle's PTYS 544 class at the University of Arizona
  1.9M PDF