AOGS 23rd Annual Meeting @ Fukuoka International Congress Centre, Japan (02 to 07 August, 2026)
HS40 - Land–atmosphere Interactions Across Scales and Their Role in Extremes Events
Session Description:
Land–atmosphere interactions are fundamental in shaping the climate system by regulating energy, water, and carbon fluxes across a wide range of spatial and temporal scales. Advances in observations and remotely sensed retrievals, alongside high-resolution modeling and theoretical frameworks, have deepened our understanding of land–atmosphere interactions, yet major uncertainties remain—particularly regarding frozen soil and snow processes, land-use/land-cover change, and the manifestation of compound extremes.
This session aims to bring together diverse contributions to advance our knowledge of land–atmosphere interactions across scales and their role in extreme events. We invite submissions that advance processes-based understanding of land-atmosphere interactions using observational and modeling data across diverse spatial and temporal scales, as well as studies that elucidate the physical mechanisms of extreme events relevant to these interactions. Topics of interest include but are not limited to:
(1) Cryosphere–land–atmosphere interactions, focusing on the role of snowmelt, frozen soil, and permafrost in regulating land-atmosphere interactions. (2) Influence of subgrid-scale heterogeneity of land-atmosphere interactions in modeling systems. (3) Soil moisture’s role in a changing climate, particularly framed through the concept of soil moisture regimes. (4) Land-use and land-cover changes, such as deforestation, afforestation, irrigation, and urbanization, and their impacts on local-to-global climate. (5) Land–atmosphere feedback shaping the development and intensification of compound drought–heatwaves and other emerging extremes. (6) Influence of land–atmosphere interactions on the Asian Climate System. (7) Advances in high-resolution ( or km-scale) Earth system models for resolving land–atmosphere interactions and enhancing the representation of extremes.
Conveners
Hsin Hsu (National Taiwan University), Min-Hui Lo (National Taiwan University), Eunkyo Seo (Pukyong National University), Daisuke Tokuda (The University of Tokyo), Jiangfeng Wei (Nanjing University of Information Science & Technology)
AOGS 23rd Annual Meeting @ Fukuoka International Congress Centre, Japan (02 to 07 August, 2026)
HS33 - From Typical to Atypical Weather and Climate Extremes: Mechanisms, Predictions/projections, and Risks
Session description:
Extreme climate events, both typical (e.g., heatwaves, droughts, floods, extreme precipitation) and atypical (e.g., compound events, weather whiplash, hydroclimate volatility, thirstwaves), pose profound challenges to ecosystems and societies worldwide. While understanding of typical extremes has improved substantially over the past decade, emerging evidence highlights the growing importance of atypical extremes, which often amplify risks in unexpected and nonlinear ways. This session aims to bring together observational, modeling, and theoretical studies to advance knowledge of both typical and atypical extremes across timescales and regions by investigating underlying mechanisms and quantifying societal and ecological impacts. Topics of interest include but not limited to:
(1) Advancing process-level understanding of land–atmosphere interactions, ocean–atmosphere interactions, and large-scale circulation that shape extremes. (2) Characterizing emerging atypical extremes, such as compound events, whiplash, hydroclimate volatility, and thirstwaves, and assessing how they amplify risks. (3) Projections/predictions of extremes or new datasets to improve understanding of climate change influences on extremes. (4) Research on uncertainty and attribution, particularly approaches to attribute observed or projected changes to natural and anthropogenic drivers. (5) Assessments of risks and impacts on water, agriculture, infrastructure, health, and ecosystems, together with strategies for adaptation and resilience.
Particular attention will be given to studies focusing on Global South and developing countries, where research coverage remains limited. Submissions from early career researchers are strongly encouraged.
Conveners
Hsin Hsu (National Taiwan University), Fei Luo (Centre for Climate Research Singapore), Mingyu Park (Ulsan National Institute of Science and Technology), Eunkyo Seo (Pukyong National University), Daisuke Tokuda (The University of Tokyo)