PTYS/LPL Faculty

Kuiper 421


Tommi Koskinen

Assistant Professor

Ph.D., 2008, University College London

Years with LPL: 2009

Exoplanets; Planetary Formation and Evolution, Planetary Atmospheres, Titan & Outer Solar System

Dr. Koskinen’s research focuses on the structure and evolution of planet and satellite atmospheres in the solar system and extrasolar planetary systems.  He is particularly interested in the physics and chemistry of the middle and upper atmosphere that he studies through both the analysis of observations and theoretical modeling.  His research covers a wide range of different objects and techniques in the spirit of comparative planetology, which is critical to our understanding of the evolution of planetary atmospheres and environments in general.  Dr. Koskinen served as a participating scientist on the Cassini mission and he is still actively involved in research on the atmospheres of Saturn and Titan.  In addition, he develops and maintains models of exoplanet atmospheres that are required to interpret current and planned observations as well as to simulate mass loss and address questions on long-term evolution.



Current Grants

  • Saturn's upper atmosphere revealed by new Cassini/UVIS occultations, NASA Cassini Data Analysis Program, Principal Investigator
  • Atmospheric structure and escape on Pluto: NASA New Frontiers Data Analysis Program, Principal Investigator
  • A comprehensive investigation of Titan's middle and upper atmosphere, NASA Cassini Data Analysis Program, Co-Investigator
  • The middle atmospheres of exoplanets: NASA Exoplanet Research Program, Co-Investigator
  • Colorado Ultraviolet Transit Experiment: Mass loss and magnetic fields in exoplanetary systems, NASA Astrophysics Research and Analysis, Co-Investigator

Current Spacecraft Involvement

Former Spacecraft Involvement

Current Graduate Students

Student collaborations/Advising

  • Jess Vriesema
  • Josh Lothringer
  • Kyle Pearson

Current Postdocs

  • Chenliang Huang

Complete publications list available from: NASA ADS Author Search: Tommi Koskinen

Refereed publications (NASA ADS): Calendar Years 2017 through June 2020

Vriesema, J. W., Koskinen, T. T., Yelle, R. V. Electrodynamics in Saturn's thermosphere at low and middle latitudes 2020Icar..34413390V

Brown, Z., Koskinen, T., Müller-Wodarg, I., West, R., Jouchoux, A., Esposito, L. A pole-to-pole pressure-temperature map of Saturn's thermosphere from Cassini Grand Finale data 2020NatAs.tmp...75B

Koskinen, T. T., Sandel, B. R., Yelle, R. V., Holsclaw, G. M., Quemerais, E. Saturn in Lyman α: A comparison of Cassini and Voyager observations 2020Icar..33913594K

Cubillos, P. E., Fossati, L., Koskinen, T., Young, M. E., Salz, M., France, K., Sreejith, A. G., Haswell, C. A. Near-ultraviolet Transmission Spectroscopy of HD 209458b: Evidence of Ionized Iron Beyond the Planetary Roche Lobe 2020AJ....159..111C

Turner, J. D., de Mooij, E. J. W., Jayawardhana, R., Young, M. E., Fossati, L., Koskinen, T., Lothringer, J. D., Karjalainen, R., Karjalainen, M. Detection of Ionized Calcium in the Atmosphere of the Ultra-hot Jupiter KELT-9b 2020ApJ...888L..13T

Pryor, W. R., Esposito, L. W., Jouchoux, A., West, R. A., Grodent, D., Gérard, J.-C., Radioti, A., Lamy, L., Koskinen, T. Cassini UVIS Detection of Saturn's North Polar Hexagon in the Grand Finale Orbits 2019JGRE..124.1979P

Lavvas, P., Koskinen, T., Steinrueck, M. E., García Muñoz, A., Showman, A. P. Photochemical Hazes in Sub-Neptunian Atmospheres with a Focus on GJ 1214b 2019ApJ...878..118L

Müller-Wodarg, I. C. F., Koskinen, T. T., Moore, L., Serigano, J., Yelle, R. V., Hörst, S., Waite, J. H., Mendillo, M. Atmospheric Waves and Their Possible Effect on the Thermal Structure of Saturn's Thermosphere 2019GeoRL..46.2372M

Sreejith, A. G., Fossati, L., Fleming, B. T., France, K., Koskinen, T., Egan, A., Rüdisser, H. T., Steller, M. Colorado Ultraviolet Transit Experiment data simulator 2019JATIS...5a8004S

Pearson, K. A., Griffith, C. A., Zellem, R. T., Koskinen, T. T., Roudier, G. M. Ground-based Spectroscopy of the Exoplanet XO-2b Using a Systematic Wavelength Calibration 2019AJ....157...21P

Fossati, L., Koskinen, T., Lothringer, J. D., France, K., Young, M. E., Sreejith, A. G. Extreme-ultraviolet Radiation from A-stars: Implications for Ultra-hot Jupiters 2018ApJ...868L..30F

Tinetti, G., Drossart, P., Eccleston, P., Hartogh, P., Heske, A., Leconte, J., Micela, G., Ollivier, M., Pilbratt, G., Puig, L., Turrini, D., Vandenbussche, B., Wolkenberg, P., Beaulieu, J.-P., Buchave, L. A., Ferus, M., Griffin, M., Guedel, M., Justtanont, K., Lagage, P.-O., Machado, P., Malaguti, G., Min, M., Nørgaard-Nielsen, H. U., Rataj, M., Ray, T., Ribas, I., Swain, M., Szabo, R., Werner, S., Barstow, J., Burleigh, M., Cho, J., du Foresto, V. C., Coustenis, A., Decin, L., Encrenaz, T., Galand, M., Gillon, M., Helled, R., Morales, J. C., Muñoz, A. G., Moneti, A., Pagano, I., Pascale, E., Piccioni, G., Pinfield, D., Sarkar, S., Selsis, F., Tennyson, J., Triaud, A., Venot, O., Waldmann, I., Waltham, D., Wright, G., Amiaux, J., Auguères, J.-L., Berthé, M., Bezawada, N., Bishop, G., Bowles, N., Coffey, D., Colomé, J., Crook, M., Crouzet, P.-E., Da Peppo, V., Sanz, I. E., Focardi, M., Frericks, M., Hunt, T., Kohley, R., Middleton, K., Morgante, G., Ottensamer, R., Pace, E., Pearson, C., Stamper, R., Symonds, K., Rengel, M., Renotte, E., Ade, P., Affer, L., Alard, C., Allard, N., Altieri, F., André, Y., Arena, C., Argyriou, I., Aylward, A., Baccani, C., Bakos, G., Banaszkiewicz, M., Barlow, M., Batista, V., Bellucci, G., Benatti, S., Bernardi, P., Bézard, B., Blecka, M., Bolmont, E., Bonfond, B., Bonito, R., Bonomo, A. S., Brucato, J. R., Brun, A. S., Bryson, I., Bujwan, W., Casewell, S., Charnay, B., Pestellini, C. C., Chen, G., Ciaravella, A., Claudi, R., Clédassou, R., Damasso, M., Damiano, M., Danielski, C., Deroo, P., Di Giorgio, A. M., Dominik, C., Doublier, V., Doyle, S., Doyon, R., Drummond, B., Duong, B., Eales, S., Edwards, B., Farina, M., Flaccomio, E., Fletcher, L., Forget, F., Fossey, S., Fränz, M., Fujii, Y., García-Piquer, Á., Gear, W., Geoffray, H., Gérard, J. C., Gesa, L., Gomez, H., Graczyk, R., Griffith, C., Grodent, D., Guarcello, M. G., Gustin, J., Hamano, K., Hargrave, P., Hello, Y., Heng, K., Herrero, E., Hornstrup, A., Hubert, B., Ida, S., Ikoma, M., Iro, N., Irwin, P., Jarchow, C., Jaubert, J., Jones, H., Julien, Q., Kameda, S., Kerschbaum, F., Kervella, P., Koskinen, T., Krijger, M., Krupp, N., Lafarga, M., Landini, F., Lellouch, E., Leto, G., Luntzer, A., Rank-Lüftinger, T., Maggio, A., Maldonado, J., Maillard, J.-P., Mall, U., Marquette, J.-B., Mathis, S., Maxted, P., Matsuo, T., Medvedev, A., Miguel, Y., Minier, V., Morello, G., Mura, A., Narita, N., Nascimbeni, V., Nguyen Tong, N., Noce, V., Oliva, F., Palle, E., Palmer, P., Pancrazzi, M., Papageorgiou, A., Parmentier, V., Perger, M., Petralia, A., Pezzuto, S., Pierrehumbert, R., Pillitteri, I., Piotto, G., Pisano, G., Prisinzano, L., Radioti, A., Réess, J.-M., Rezac, L., Rocchetto, M., Rosich, A., Sanna, N., Santerne, A., Savini, G., Scandariato, G., Sicardy, B., Sierra, C., Sindoni, G., Skup, K., Snellen, I., Sobiecki, M., Soret, L., Sozzetti, A., Stiepen, A., Strugarek, A., Taylor, J., Taylor, W., Terenzi, L., Tessenyi, M., Tsiaras, A., Tucker, C., Valencia, D., Vasisht, G., Vazan, A., Vilardell, F., Vinatier, S., Viti, S., Waters, R., Wawer, P., Wawrzaszek, A., Whitworth, A., Yung, Y. L., Yurchenko, S. N., Osorio, M. R. Z., Zellem, R., Zingales, T., Zwart, F. A chemical survey of exoplanets with ARIEL 2018ExA....46..135T

Yelle, R. V., Serigano, J., Koskinen, T. T., Hörst, S. M., Perry, M. E., Perryman, R. S., Waite, J. H. Thermal Structure and Composition of Saturn's Upper Atmosphere From Cassini/Ion Neutral Mass Spectrometer Measurements 2018GeoRL..4510951Y

Lothringer, J. D., Barman, T., Koskinen, T. Extremely Irradiated Hot Jupiters: Non-oxide Inversions, H- Opacity, and Thermal Dissociation of Molecules 2018ApJ...866...27L

Gröller, H., Montmessin, F., Yelle, R. V., Lefèvre, F., Forget, F., Schneider, N. M., Koskinen, T. T., Deighan, J., Jain, S. K. MAVEN/IUVS Stellar Occultation Measurements of Mars Atmospheric Structure and Composition 2018JGRE..123.1449G

Koskinen, T. T., Guerlet, S. Atmospheric structure and helium abundance on Saturn from Cassini/UVIS and CIRS observations 2018Icar..307..161K

Fossati, L., Koskinen, T., France, K., Cubillos, P. E., Haswell, C. A., Lanza, A. F., Pillitteri, I. Suppressed Far-UV Stellar Activity and Low Planetary Mass Loss in the WASP-18 System 2018AJ....155..113F

Cui, J., Yelle, R. V., Zhao, L.-L., Stone, S., Jiang, F.-Y., Cao, Y.-T., Yao, M.-J., Koskinen, T. T., Wei, Y. The Impact of Crustal Magnetic Fields on the Thermal Structure of the Martian Upper Atmosphere 2018ApJ...853L..33C

Fleming, B. T., France, K., Nell, N., Kohnert, R., Pool, K., Egan, A., Fossati, L., Koskinen, T., Vidotto, A. A., Hoadley, K., Desert, J.-M., Beasley, M., Petit, P. M. Colorado Ultraviolet Transit Experiment: a dedicated CubeSat mission to study exoplanetary mass loss and magnetic fields 2018JATIS...4a4004F

Chadney, J. M., Koskinen, T. T., Galand, M., Unruh, Y. C., Sanz-Forcada, J. Effect of stellar flares on the upper atmospheres of HD 189733b and HD 209458b 2017A&A...608A..75C

Lavvas, P., Koskinen, T. Aerosol Properties of the Atmospheres of Extrasolar Giant Planets 2017ApJ...847...32L

Fossati, L., Marcelja, S. E., Staab, D., Cubillos, P. E., France, K., Haswell, C. A., Ingrassia, S., Jenkins, J. S., Koskinen, T., Lanza, A. F., Redfield, S., Youngblood, A., Pelzmann, G. The effect of ISM absorption on stellar activity measurements and its relevance for exoplanet studies 2017A&A...601A.104F

Loyd, R. O. P., Koskinen, T. T., France, K., Schneider, C., Redfield, S. Ultraviolet C II and Si III Transit Spectroscopy and Modeling of the Evaporating Atmosphere of GJ436b 2017ApJ...834L..17L

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Last updated on September 11, 2020