[M-IS13] Regional and global urban climate processes across multi-temporal scales

Fri. May 29, 2026 10:45 AM - 12:15 PM 106 (International Conference Hall, Makuhari Messe)

Chairperson:Varquez Galang Alvin Christopher(Institute of Science Tokyo), Li Dan(Boston University), Kusaka Hiroyuki(University of Tsukuba), Ito Rui(Japan Agency for Marine-Earth Science and Technology)

Throughout history, the development of cities has been deeply intertwined with their surrounding geography and climate. The distinct climatic features of urban areas were formally documented as early as the 19th century by figures like Luke Howard, who studied London's climate. Today, rapidly expanding global cities are increasingly recognized both as powerful shapers of weather and as highly vulnerable areas facing the intensification of climate extremes. Significant advances in long-term observations and multi-scale climate models are being utilized to better understand and manage complex urban-climate interactions. Given their role as key players in climate change, cities have received special emphasis from organizations like the Intergovernmental Panel on Climate Change (IPCC). What new insights are emerging regarding urban climate dynamics at the regional to global scale? What advancing methods allow for the investigation of urban climate interactions beyond the scope of single cities? How do we precisely define the role of urban climate in the broader context of global climate change? This session will focus on urban climate across multiple scales, acknowledging the unique position cities hold to both shape and be modified by changing background climate.

We welcome submissions on the following topics:

* Physical mechanisms of urban climate;
* Quantification and attribution of the urban effect on climate and the reciprocal impact of climate change on cities;
* Novel approaches to urban climate research;
* Urban climate in the context of global climate change;
* Regional and global-scale modeling and observations of urban climate;
* Atmospheric chemistry over urban areas;

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10:45 AM - 11:00 AM

[MIS13-06] Simulation of Near-Surface Air Temperature Reduction by Cool Roofs in the Tokyo Metropolitan Area Considering Spatial Distributions of Urban Morphology and Rooftop Albedo

*Masataka Ariga¹, Makoto Nakayoshi¹, Yuya Takane², Shiho Onomura³, Benjamin Crawford⁴ (1. Tokyo University of Science, 2. National Institute for Environmental Studies, 3. Tokyo City University, 4. University of Colorado Denver)

11:00 AM - 11:15 AM

[MIS13-07] A Novel Downscaling Approach for Urban Climate: Land-Surface-Physics-Based Downscaling

*Lingbo Xue¹, Quang-Van Doan¹, Hiroyuki Kusaka¹, Cenlin He², Fei Chen³ (1. University of Tsukuba, 2. NSF National Center for Atmospheric Research, 3. The Hong Kong University of Science and Technology)

11:15 AM - 11:30 AM

[MIS13-08] Development of SLUCM+BEM and its applications for climate change adaptation and mitigation in cities

*Yuya Takane¹, Yukihiro Kikegawa², Hiroyuki Kusaka³ (1. National Institute for Environmental Studies, 2. Meisei University, 3. University of Tsukuba)

11:30 AM - 11:45 AM

[MIS13-09] Modeling Drivers of Building-Sector Emissions in GCC Countries Using Advanced Machine Learning

*Behnam Ata¹, János Pénzes¹, Gábor Kozma¹, Safwan Mohammed^2,3 (1. University of Debrecen, Department of Social Geography and Regional Development Planning, 2. Institute of Land Use, Technical and Precision Technology, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, 4032 Debrecen, Hungary , 3. Institutes for Agricultural Research and Educational Farm, University of Debrecen, Böszörményi 138, 4032 Debrecen, Hungary )

11:45 AM - 12:00 PM

[MIS13-10] A global first-order estimate of the impact of anthropogenic heat on urban air temperature

*Do Ngoc Khanh¹, Alvin Christopher Galang Varquez², Manabu Kanda² (1. Shibaura Institute of Technology, 2. Institute of Science Tokyo)

Discussion (12:00 PM - 12:15 PM)