The Japan Geoscience Union (JpGU) Publicity and Outreach Committee presents a selection of "Highlight Sessions" from the JpGU-AGU Joint Meeting 2026. These sessions have been selected for their scientific significance and broad interest.
Presentations specially recommended by the conveners are also featured as "Highlight Papers".
*The page will be updated as needed.
◼︎U-07
Ecosystem fluctuations in the Northwest Pacific and their linkages to global environmental change
[Oral] May 28 PM1, PM2 [Poster] May 28 PM3
Room: Exhibition Hall Special Setting (1)
Convener: Toshio Suga
◼︎O-04 (G-07)
Geoparks and Sustainability
[Oral] May 24 AM2 [Poster] May 24 PM3
Room: International Conference Room (IC)
Convener: Noritaka Matsubara
◼︎O-11
Overview of the recent activity of Nishinoshima and volcanoes in Ogasawara Islands
[Oral] May 24 AM2
Room: 201A
Convener: Kenta K Yoshida
◼︎L-02
Frontiers in Atmospheric and Hydrospheric Science 3: Recent extreme heat events in global and Japan
[Oral] May 27 AM2 [Poster] May 27 PM3
Room: International Conference Room (IC)
Convener: Nobuhito Ohte
◼︎P-PS11
Mercury Science and Exploration
[Oral] May 25 PM1, PM2 [Poster] May 25 PM3
Room: 303
Convener: Go Murakami
Highlight Paper
◼︎PPS11-09
First global map of Mercury's surface roughness implies previous underestimation of the planet's radial contraction
Presenter: Gaku Nishiyama
Date & Time: May 25, 4:25 PM - 4:50 PM
Recommendation Letter from Convener
This study provided the first global topographic map of Mercury and revealed that the contraction of Mercury’s diameter had previously been underestimated by as much as 30%. These findings have significant implications for understanding Mercury’s geological evolution and are a study worthy of attention as the BepiColombo mission prepares to arrive at Mercury.
◼︎P-EM15
Frontiers in solar physics: observation, modeling, and long-term research from the past to the future
[Oral] May 27 AM1, AM2, PM1 [Poster] May 27 PM3
Room: 301A
Convener: Shin Toriumi
◼︎A-CG58
Multi-scale ocean-atmosphere interaction in the tropics
[Oral] May 24 AM1, AM2 [Poster] May 24 PM3
Room: 104
Convener: Ayako Seiki
Highlight Paper
◼︎ACG58-02
ENSO rectification suppresses El Niño-like warming and associated atmospheric responses to greenhouse gas forcing
Presenter: Takashi Kawamura
Date & Time: May 24, 9:15 AM - 9:30 AM
Recommendation Letter from Convener
Spatial pattern of tropical Pacific sea surface warming in response to anthropogenic forcing attracts significant attention in climate science. Kawamura et al. evaluate the nonlinear rectification effect of El Nino-Southern Oscillation (ENSO) on this warming pattern by conducting a CO2-forced climate model experiment where ENSO is artificially suppressed.
◼︎ACG58-10
Marine Heatwaves (MHWs) in the Tropical South Pacific driven by multiscale air-sea processes
Presenter: SOPHIE E CRAVATTE
Date & Time: May 24, 11:30 AM - 11:45 AM
Recommendation Letter from Convener
Marine heatwaves are severe ocean events that impact coral reefs, marine ecosystems, and biodiversity. Dr Sophie Cravatte investigates the causes of these events, their effects on Pacific Island nations, and how they may evolve in the future. Her research has advanced understanding of Pacific dynamics, ocean extremes, and supported TPOS.
◼︎A-CG62
Changing Midlatitude Atmosphere-Ocean-Ecosystem; Processes, Coupling, and Future Perspectives
[Oral] May 26 AM1, AM2, PM1, PM2 [Poster] 5/26 PM3
Room: 104
Convener: Shusaku Sugimoto
Highlight Paper
◼︎ACG62-01
Role of North Atlantic SST variability in recently observed North Pacific warming
Presenter: Yoko Yamagami
Date & Time: May 26, 9:00 AM - 9:15 AM
Recommendation Letter from Convener
This study demonstrates, using climate model experiments, that North Atlantic SST variability can influence North Pacific climate. By identifying atmospheric circulation changes and oceanic Rossby waves as key pathways, it reveals a robust cross-basin linkage and provides new insight into recent warming and marine heatwaves.
◼︎ACG62-20
Topographic Control by the Japan Trench on the Anomalous Intrusion of the Kuroshio Extension
Presenter: Toru Miyama
Date & Time: May 26, 3:45 PM - 4:00 PM
Recommendation Letter from Convener
Since late 2022, the Kuroshio Extension has shifted far north of its usual path off Chiba, at times reaching offshore Aomori. This study shows that topographic effects of the Japan Trench and eddy activity contributed to this extreme displacement and associated marine heatwave, offering a timely dynamical interpretation.
◼︎A-CG68
Science in the Arctic Region
[Oral] May 26 AM2, PM1, PM2 [Poster] May 26 PM3
Room: 201B
Convener: Masatake Hori
Highlight Paper
◼︎ACG68-03
A newly suggested feedback loop amplifying Arctic warming through the pan-Arctic water cycle
Presenter: Tetsu Nakamura
Date & Time: May 26, 11:15 AM - 11:30 AM
Recommendation Letter from Convener
This study analyzes the role of water vapor in rapid Arctic amplification, focusing on the transport processes. It is revealed that during autumn, evaporation driven by sea-ice loss becomes the dominant factor, triggering a previously unrecognized feedback loop where both moisture transport and radiative forcing are intensified.
◼︎ACG68-12
Pacific Water transports through Barrow Canyon based on long–term mooring observations
Presenter: Motoyo Itoh
Date & Time: May 26, 3:45 PM - 4:00 PM
Recommendation Letter from Convener
Using new observation techniques and satellite data analysis, this study examined the inflow of warm Pacific water, which significantly impacts sea-ice loss. Results show that while the heat transport of Pacific water increased 1.5-fold toward the late 2010s, it has since stagnated, driven by water temperature changes tied to sea-ice conditions in the early summer.
◼︎H-SC07
CCUS (Carbon Dioxide Capture, Utilization, and Storage) for Climate Mitigation
[Oral] May 26 AM2, PM1, PM2 [Poster] May 26 PM3
Room: Exhibition Hall Special Setting (3)
Convener: Masao Sorai
Highlight Paper
◼︎HSC07-06
Investigation of Nanofilteration Membrane for Marine Carbon Dioxide Removal Technology
Presenter: Manlin Xu
Date & Time: May 26, 4:45 PM - 5:00 PM
Recommendation Letter from Convener
This presentation is an ambitious study demonstrating the potential of nanofiltration membranes to control carbonate equilibrium without chemical additives, for marine carbon dioxide removal. The result significantly advances future implementation possibilities, and further developments are anticipated.
◼︎H-RE12
Seafloor mineral resources and their natural analogues on land
[Oral] May 28 PM1, PM2 [Poster] May 28 PM3
Room: Exhibition Hall Special Setting (3)
Convener: Tatsuo Nozaki
Highlight Paper
◼︎HRE12-01
Surface Chemistry of Marine Ferromanganese Oxides: Significance for the Modern and Ancient Oceans
Presenter: Teruhiko Kashiwabara
Date & Time: May 28, 1:45 PM - 2:15 PM
Recommendation Letter from Convener
Dr. Teruhiko Kashiwabara has unraveled the element enrichment mechanism and trace element geochemistry of ferromanganese crust by using a radiation light analysis. In this presentation, he will give a review talk about the element enrichment mechanism in ferromanganese crust.
◼︎HRE12-07
Gold enrichment mechanism at the Higashi-Aogashima Knoll Caldera hydrothermal field from the aspect of Pb isotope
Presenter: Kentaro Ishida
Date & Time: May 28, 3:45 PM - 4:00 PM
Recommendation Letter from Convener
Mr. Kentaro Ishida is studying about the gold enrichment mechanism at Higashi-Aogashima Knoll Caldera by using a Pb isotopic composition. He will report that thickness of scoria-rich sediment infilling the caldera floor affects the gold concentration at each hydrothermal site.
◼︎H-CG19
Adaptation to climate change and its social implementation
[Oral] May 24 AM2 [Poster] May 24 PM3
Room: Exhibition Hall Special Setting (3)
Convener: Hiroya Yamano
Highlight Paper
◼︎HCG19-04
Integrating Climate Modeling and Multi-Objective Optimization for Heat Stress Adaptation Planning at the Local Level in Korea
Presenter: Sae Yeon Jang
Date & Time: May 24, 10:00 AM - 10:15 AM
Recommendation Letter from Convener
This study proposed spatial configurations for green infrastructure to mitigate urban heat using optimization calculations that took into account the WRF model and costs, yielding results that significantly contribute to urban planning that incorporates heat adaptation measures.
◼︎HCG19-P05
Long-term Co-benefits of Dynamic Management of Rice Paddy Water Retention fo Climate Change Adaptation
Presenter: Wang Yingfu
Date & Time: May 24, 5:15 PM - 7:00 PM
Recommendation Letter from Convener
With regard to paddy fields, the study evaluated their function as flood retention basins, in addition to their role in irrigation management, through model analysis. The results provide guidelines for reconciling rice production with the role of these fields as nature-based solutions.
◼︎B-PT03
Biomineralization, Geochemistry, and Environmental Studies
[Oral] May 27 AM1, AM2 [Poster] May 27 PM3
Room: Exhibition Hall Special Setting (5)
Convener: Takashi Toyofuku
◼︎B-CG06
Frontier in Biology and Paleobiology of Fossilized Micro-organisms
[Oral] May 27 PM1, PM2 [Poster] May 27 PM3
Room: Exhibition Hall Special Setting (5)
Convener: Rie Hori, S.
◼︎M-IS04
Paleoclimatology and paleoceanography
[Oral] May 25 AM1, AM2, PM1, PM2, May 26 AM1, AM2 [Poster] May 25 PM3
Room: Exhibition Hall Special Setting (5)
Convener: Hitoshi Hasegawa
◼︎M-IS07
Plastic Pollution: Interdisciplinary Challenges across Earth and Policy Sciences
[Oral] May 24 AM2, PM1, PM2 [Poster] May 24 PM3
Room: 102
Convener: Shinichiro Kako
Highlight papers
◼︎MIS07-02
Understanding the Landscape of Plastic Pollution: Three Key Characteristics and Six Strategic Perspectives for Effective Action
Presenter: Tomohiro Tasaki
Date & Time: May 24, 2:00 PM - 2:15 PM
Recommendation Letter from Convener
As the need to address plastic pollution becomes increasingly urgent, a key challenge is how to reduce plastics that have become pervasive throughout all aspects of society. This keynote lecture characterizes the plastic problem through three key features and discusses effective countermeasures from six perspectives.
◼︎MIS07-P11
Real-Time Supervised Classification of Microplastic Types with a Multiband Microscopic Imaging
Presenter: Ahmad Shaqeer Mohamed Thaheer
Date & Time: May 24, 5:15 PM - 7:00 PM
Recommendation Letter from Convener
The work presents a compact, low-cost 4-band spectral imaging that enables real-time classification of marine microplastics into common polymers using diagnostic narrowband filters, synchronized multi-camera imaging, precise band registration, and spectral indices. Thus, bridging the gap between hyperspectral systems and environmental monitoring of microplastic composition in field studies worldwide.
◼︎M-GI36
Computational sciences on the universe, galaxies, stars, planets and their environments
[Oral] May 29 AM1, AM2 [Poster] May 29 PM3
Room: 303
Convener: Wataru Ohfuchi
Highlight papers
◼︎MGI36-04
A Graph Neural Network Emulator for Planet Formation in the Giant Impact Stage
Presenter: Yuichiro Ishida
Date & Time: May 29, 9:45 AM - 10:00 AM
Recommendation Letter from Convener
A Graph Neural Network (GNN) emulator for the giant-impact stage of planet formation has been developed, achieving four orders of magnitude speedup over N-body simulations. The emulator accurately reproduces the statistical properties of planetary systems, representing an outstanding contribution to planet formation research and exoplanetary science.
◼︎MGI36-P01
Estimating the Rayleigh number and thermal structure in laboratory convection via PINN-based Lagrangian data assimilation
Presenter: Atsushi Nakao
Date & Time: May 29, 5:15 PM - 7:00 PM
Recommendation Letter from Convener
A physics-informed neural network (PINN) framework has been developed to reconstruct thermal convection fields from particle-tracking data without adjoint models, successfully estimating the Rayleigh number. This adjoint-free approach represents an outstanding contribution to data assimilation methodology in Earth and planetary fluid dynamics.