Space and Planetary Sciences (P)
Session Sub-category Planetary Sciences(PS)
Session ID P-PS08
Title Science of Venus in the post-VEx/Akatsuki era
Short Title Science of Venus
Main Convener Name Takehiko Satoh
Affiliation Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency
Co-Convener 1 Name Kevin McGouldrick
Affiliation University of Colorado Boulder
Co-Convener 2 Name Armin Kleinboehl
Affiliation NASA Jet Propulsion Laboratory
Co-Convener 3 Name Silvia Tellmann
Affiliation University of Cologne
Co-Convener 4 Name Yuki Harada
Affiliation ISEE, Nagoya University
Co-Convener 5 Name Yeon Joo Lee
Affiliation Institute for Basic Science
Session Language
E
Scope
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.
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.
Presentation Format Oral and Poster presentation
Joint Session with EGU
Time Presentation No Title Presenter
Oral Presentation May 29 PM1
13:45 - 14:05 PPS08-01 Constraining Venus’ Water Loss History Using D/H Ratio observations from Ion Cyclotron Wave Analysis Fabian Weichbold
14:05 - 14:20 PPS08-02 Formation of V0 Layer in Venus’ Nightside Ionosphere Induced by SEP Events Pucheng Lu
14:20 - 14:40 PPS08-03 Elucidating the role of Polysulfur Allotropes in the Venusian Atmosphere: (Photo)chemistry and Cloud condensation. Benjamin Normann Frandsen
14:40 - 14:55 PPS08-04 Multi-Spatiotemporal Variations of the Venusian Cloud-Top Sulfur Dioxide Derived from Akatsuki/UVI Observations Tatsuro Iwanaka
14:55 - 15:15 PPS08-05 Cosmic Dust as the Primary Source of the Lower Haze Layer on Venus Hiroki Karyu
Oral Presentation May 29 PM2
15:30 - 15:45 PPS08-06 Cloud-top circulation of Venus studied using the denoised thermal infrared images Zhuan Guo
15:45 - 16:00 PPS08-07 Modeling Gravity Wave Propagation in the Venusian Upper Atmosphere under Varying Background Wind Conditions Jeslin Susan Jose
16:00 - 16:15 PPS08-08 REACTIVE PATHWAYS IN HIGH-SiO2 GLASS UNDER VENUS SURFACE CONDITIONS Emily Roberts
16:15 - 16:35 PPS08-09 Lateral variation of effective elastic lithospheric thickness, crustal thickness and heat flow along the volcanic plains of Venus. Ignacio Romeo
16:35 - 16:55 PPS08-10 Long-term variations in Venusian cloud-top temperatures observed by Earth-orbiting satellites Gaku Nishiyama
Presentation No Title Presenter
Poster Presentation May 29 PM3
PPS08-P01 Study of Venusian lightning light curves interpreting previous observations based on Planetary Lightning Detector observations and simulation modeling Tatsuharu Ono
PPS08-P02 Ground-based spectral observation of Venus UV absorption by Pirka Telescope Hamamoto Ko
PPS08-P03 Ground-based observations using IRTF/iSHEL for monitoring trace gases near the cloud tops of Venus Takao M. Sato
PPS08-P04 Feasibility study of trace gas observations in the Venusian lower atmosphere using the high-dispersion near-infrared spectrograph GARNET Aoi Takamori
PPS08-P05 Concept study for Korea’s future Venus exploration to understand the three-dimensional structures of the variable atmosphere Yeon Joo Lee
PPS08-P06 The Ultraviolet Albedo of Venus from the era of Pioneer Venus to Venus Express and Akatsuki Kevin McGouldrick
PPS08-P07 Radiative Transfer Analysis of Gigantic Discontinuity in Venus Cloud Layer and Its Lifecycle Takehiko Satoh
PPS08-P08 Poleward Heat Transport by a 5-Day Rossby Wave at the Venus Cloud Top Masataka Imai
PPS08-P09 Variability of Venusian Polar Tropopause Studied by Radio Occultation and Venus SCALE-GM Miyu Sugiura
PPS08-P10 Three-Dimensional Empirical Orthogonal Function (3D-EOF) Analysis of Venusian Atmosphere Dynamics Tong Ding
PPS08-P11 Long Term Variability of Super-Rotation Reproduced by Akatsuki Horizontal Wind Assimilation Yukiko Fujisawa
PPS08-P12 Sensitivity Tests of the Venusian Atmospheric Model Parameters Toward Akatsuki Data Assimilation Tatsuro Iwanaka