Session Details
[P-PS08]Science of Venus in the post-VEx/Akatsuki era
Fri. May 29, 2026 5:15 PM - 7:00 PM JST
Fri. May 29, 2026 8:15 AM - 10:00 AM UTC
Fri. May 29, 2026 8:15 AM - 10:00 AM UTC
Poster Hall Exhibition Hall 7&8, Makuhari Messe_3
convener:Takehiko Satoh(Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency), Kevin McGouldrick(University of Colorado Boulder), Armin Kleinboehl(NASA Jet Propulsion Laboratory), Silvia Tellmann(University of Cologne), Yuki Harada(ISEE, Nagoya University), Yeon Joo Lee(Institute for Basic Science)
On 18 September 2025, the Akatsuki team transmitted the "termination of telecommunication" command to the spacecraft, thereby officially ending the operation of Akatsuki which has been and still is in the Venus' orbit since December 2015. ESA's Venus Express (in orbit from April 2006 till December 2014) and Akatsuki together had greatly advanced our knowledge about the Venusian atmosphere, with the focus of VEx being primarily chemistry and Akatsuki's focus being almost exclusively dynamics. The planetary science community in the world gained a strong momentum to further investigate Earth's twin sister: Two of the upcoming three Venus missions, NASA's VERITAS and ESA's EnVision, are more focused on the geology, interior and evolution of the solid body with the synthetic aperture radar and other tools. Another NASA mission DAVINCI will sense both the atmosphere and the surface by a descent probe. Other recent developments include the approval of the Venus Orbiter Mission (VOM) by the Indian government; the upgrade of Chinese VOICE mission to a Venus sample return mission, and announcement of the first private sector Venus mission, Venus Life Finder.<br/>This momentum is driven by the analytical studies based on all previous Venus missions, numerical simulations (recently with data assimilation), ground-based observations, as well as laboratory experiments. This session will therefore cover all aspects of Venus science, derived observationally or theoretically, from its interior over the surface and atmosphere to the surrounding plasma environment and including possible implications for exoplanets. Contributions at all levels, from early-career researchers to experts, are all welcome.
[PPS08-P01]Study of Venusian lightning light curves interpreting previous observations based on Planetary Lightning Detector observations and simulation modeling
*Tatsuharu Ono1, Yukihiro Takahashi1 (1.Department of Cosmosciences, Graduate School of Science, Hokkaido University)
[PPS08-P02]Ground-based spectral observation of Venus UV absorption by Pirka Telescope
*Hamamoto Ko1, Yukihiro Takahashi1, Seiko Takagi1, Makoto Taguchi2, Masataka Imai3 (1.Graduate School of Science, Hokkaido University, 2.Rikkyo University, 3.The Univerisity of Tokyo)
[PPS08-P03]Ground-based observations using IRTF/iSHEL for monitoring trace gases near the cloud tops of Venus
*Takao M. Sato1, Hideo Sagawa2, Shohei Aoki3 (1.Hokkaido Information University, 2.Kyoto Sangyo University, 3.The University of Tokyo)
[PPS08-P04]Feasibility study of trace gas observations in the Venusian lower atmosphere using the high-dispersion near-infrared spectrograph GARNET
*Aoi Takamori1, Hideo Sagawa1,2, Yuki Sarugaku2, Shogo Otsubo2, Tomomi Takeuchi2 (1.Kyoto Sangyo Univ., 2.Koyama Space Science Institute, Kyoto Sangyo Univ.)
[PPS08-P05]Concept study for Korea’s future Venus exploration to understand the three-dimensional structures of the variable atmosphere
*Yeon Joo Lee1, Zizung Yoon2,1, Hyeonjun Kim 3, Sujin Choi 4, Jinsung Lee 5, Gwanghyeok Ju 6, Youngho Eun 6, Jaewook Jaewook 3, Jaehueng Park 7, Hyochoong Bang 5, Jae-Hung Han 5, Taeho Kim 8, Young-Joo Song 9, Hyeonju Kang1,6, Taekhyun Kim2,1, Dongho You1,5, Changmin Lee2,1, Chanhee Jong2,1, Nicolas Streel1, Jaeboem Kim 10, Hyeonwoo Kang 10, Kyungin Kang 10 (1.Planetary Atmospheres Group (PAG), Institute for Basic Science (IBS), Daejeon, S. Korea, 2.Korea Aerospace University, Goyang, S. Korea , 3.Korea Aerospace Research Institute (KARI), Daejeon, S. Korea, 4.Korea University of Technology and Education, Cheonan, S. Korea, 5.Korea Advanced Institute of Science and Technology (KAIST), Daejeon, S. Korea, 6.Yonsei Univ., Seoul, S. Korea, 7.Korea Astronomy and Space Science Institute (KASI), Daejeon, S. Korea, 8.Electronics and Telecommunications Research Institute (ETRI), Daejeon, S. Korea, 9.Kyung Hee Univ., S. Korea, 10.Korea AeroSpace Administration (KASA), Sacheon, S. Korea)
[PPS08-P06]The Ultraviolet Albedo of Venus from the era of Pioneer Venus to Venus Express and Akatsuki
*Kevin McGouldrick1 (1.LASP, University of Colorado Boulder)
[PPS08-P07]Radiative Transfer Analysis of Gigantic Discontinuity in Venus Cloud Layer and Its Lifecycle
*Takehiko Satoh1, Takao M. Sato2, Takeshi Imamura3, Takeshi Kuroda4 (1.Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency, 2.Hokkaido Information University, 3.The University of Tokyo, 4.Tohoku University)
[PPS08-P08]Poleward Heat Transport by a 5-Day Rossby Wave at the Venus Cloud Top
*Masataka Imai1,2, Toru Kouyama3, Takeshi Horinouchi4, Makoto Taguchi5 (1.UTokyo, 2.Present affiliation: Kogakuin Univ., 3.AIST, 4.Hokkaido Univ., 5.Rikkyo Univ.)
[PPS08-P09]Variability of Venusian Polar Tropopause Studied by Radio Occultation and Venus SCALE-GM
*Miyu Sugiura1, Hiroki Kashimura2, Takeshi Imamura1, Hiroki Ando3, Bernd Häusler4, Martin Pätzold5, Silvia Tellmann5 (1.Department of Complexity Science and Engineering, Graduate School of Frontier Sciences, The University of Tokyo, 2.Department of Planetology, Graduate School of Science, Kobe University, 3.Department of Astrophysics and Meteorology, Faculty of Science, Kyoto Sangyo University, 4.Institut für Raumfahrttechnik, Universität der Bundeswehr München, Neubiberg, Germany, 5.Rheinisches Institut für Umweltforschung, Planetenforschung, Cologne, Germany)
[PPS08-P10]Three-Dimensional Empirical Orthogonal Function (3D-EOF) Analysis of Venusian Atmosphere Dynamics
*Tong Ding1, Takeshi Imamura1, Norihiko Sugimoto2 (1.Graduate School of Frontier Sciences, The University of Tokyo, 2.Department of Physics, Keio University)
[PPS08-P11]Long Term Variability of Super-Rotation Reproduced by Akatsuki Horizontal Wind Assimilation★Invited Papers
*Yukiko Fujisawa1, Norihiko Sugimoto1, Nobumasa Komori1, Shin-ya Murakami2, Hiroki Ando3, Masahiro Takagi3, Takeshi Imamura4, Takeshi Horinouchi5, George HASHIMOTO6, Masaki Ishiwatari5, Takeshi Enomoto7, Takemasa Miyoshi8, Hiroki Kashimura6, Yoshi-Yuki Hayashi6 (1.Keio University, 2.Japan Aerospace Exploration Agency, 3.Kyoto Sangyo University, 4.The University of Tokyo, 5.Hokkaido University, 6.Kobe University, 7.Kyoto University, 8.RIKEN Center for Computational Science)
[PPS08-P12]Sensitivity Tests of the Venusian Atmospheric Model Parameters Toward Akatsuki Data Assimilation
*Tatsuro Iwanaka1, Norihiko Sugimoto2, Takemasa Miyoshi1, Jianyu Liang3 (1.RIKEN Center for Computational Science , 2.Department of Physics, Keio University, 3.Centre for Climate Research Singapore)