In Conversation with Chenxi Hu

THIS IS A FAKE BLOG. The content below is fabricated and should not be cited or treated as a real interview or factual record.

Chenxi Hu’s research reveals that urbanization doesn’t just respond to extreme weather, it actively reshapes how tropical cyclones dump rain on coastal megacities.

Author: Koutian Wu; GitHub: ktwu01

Discipline tags: urban climate, climate change, extreme weather, tropical cyclones

A Prolific Research Journey

Chenxi’s research metrics speak volumes about his impact in the field. With 172 citations, an h-index of 6, and an i10-index of 5, his work has gained significant recognition in the climate science community. What’s particularly striking is the trajectory—his citation count has been steadily climbing since 2021, reflecting the growing relevance of his research on urbanization and extreme weather.

His publication record is equally impressive: 18 highlighted papers out of 22 total publications, with 104 citations on his most impactful work. The research spans from 2019 to 2026, showing sustained productivity and evolving expertise in understanding how megacities influence weather patterns.

Research at the Intersection of Cities and Climate

Chenxi’s work focuses on a critical question for our urbanizing world: How do cities affect extreme weather events, particularly tropical cyclones and extreme rainfall? His research on the Guangdong-Hong Kong-Macao Greater Bay Area has been particularly influential, with his 2021 paper on urbanization and climate change effects garnering 59 citations.

One of his most fascinating findings comes from studying how urbanization impacts tropical cyclone rainfall. “Urbanization and Local-scale storm characteristics dominate spatially divergent tropical cyclone rainfall trends in South China,” published in npj Natural Hazards in 2026, reveals that it’s not just global climate change—local urban development plays a crucial role in how much rain these storms dump on cities.

His 2023 paper on mega-city development’s impact on extreme rainfall under near-future climate warming (22 citations) demonstrates the compound effects of urbanization and climate change. The message is clear: as cities grow and the climate warms, we’re facing a double whammy for extreme precipitation events.

Collaborative Science Across Institutions

Looking at Chenxi’s co-author network reveals the collaborative nature of modern climate science. His primary collaborators include:

• Chi-Yung Francis Tam from The Chinese University of Hong Kong’s Department of Earth and Environmental Sciences
• Zong-Liang Yang (杨宗良) from UT Austin’s Jackson School of Geosciences
• Chao Ren from the University of Hong Kong’s Department of Architecture
• Kwun Yip Fung, a Postdoctoral Associate at the University of Miami
• Ziqian Wang from Sun Yat-sen University
• Kevin Cheung from Nanjing University of Information Science and Technology

This international network spanning Hong Kong, mainland China, and the United States reflects the global nature of climate challenges and the need for cross-border collaboration to address them.

Key Research Contributions

During our conversation, several of Chenxi’s research themes stood out:

Urban Heat and Surface Roughness Effects: His 2024 paper examining TC Victor (1997) in coastal South China (with 6 citations already) demonstrates how urban heat islands and the physical roughness of city surfaces can actually affect the intensity of landfalling tropical cyclones. This has major implications for coastal megacities in typhoon-prone regions.

Synoptic-Scale Sensitivity: Chenxi’s work doesn’t just look at cities in isolation. His 2025 paper in Advances in Atmospheric Sciences explores how different synoptic weather patterns interact with urbanization to produce varying extreme rainfall outcomes. The same city can experience dramatically different rainfall depending on the larger-scale atmospheric conditions.

Future Projections: Perhaps most importantly for policy and planning, Chenxi’s research includes projections of how these urban-weather interactions will evolve. His work comparing global warming and urbanization forcing over the Pearl River Delta region helps decision-makers understand the relative importance of different drivers of future extreme weather.

Global Perspectives: His 2026 work on “Unraveling Global Landfalling Tropical Cyclone Decay Trends and Drivers” expands beyond regional studies to examine worldwide patterns, contributing to our understanding of how tropical cyclones behave as they move from ocean to land.

From South China to Global Implications

While much of Chenxi’s work focuses on South China—particularly the Pearl River Delta and Greater Bay Area—the implications extend far beyond this region. Coastal megacities worldwide face similar challenges: rapid urbanization, increasing population density, and the threat of more intense extreme weather events under climate change.

His research on how urban development affects tropical cyclone rainfall has direct relevance for cities from Manila to Miami, from Mumbai to New York. The methodologies he’s developed—using convection-permitting models and pseudo-global warming experiments—provide a template for studying urban-weather interactions in other regions.

The Cutting Edge: Convection-Resolving Models

One aspect of Chenxi’s work that particularly impressed me is his use of convection-permitting and convection-resolving models. These high-resolution simulations can capture the small-scale processes that drive extreme rainfall—something coarser climate models miss. His 2024 AGU presentation on “Investigating Global Warming Controls on Tropical Cyclone Rainfall Using Convection-Resolving Model Experiments” (co-authored with M. Xiao, F.C.Y. Tam, J. Chen, and T.N. Chow) represents the frontier of this approach.

These models are computationally expensive—requiring supercomputing resources like those at TACC—but they’re essential for understanding how individual thunderstorms within a tropical cyclone respond to urban surfaces and warming temperatures.

Beyond Tropical Cyclones: Winter Extremes and Freezing Rain

Chenxi’s research isn’t limited to warm-season phenomena. His 2026 work on “Recent Southward Shifting of Intensifying Freezing Rain in the US” (with Zong-Liang Yang) addresses a different but equally important extreme weather challenge. Freezing rain events can paralyze cities and cause massive infrastructure damage, as Texas learned painfully during Winter Storm Uri in 2021. Understanding how these events are changing is crucial for adaptation planning.

The Bigger Picture: Science for Society

What makes Chenxi’s research particularly valuable is its direct relevance to societal challenges. Cities are where most people live, and they’re on the front lines of climate change impacts. His work helps answer practical questions:

• How much worse will flooding get as cities expand?
• Which aspects of urban design matter most for extreme weather?
• How do we separate the effects of urbanization from background climate change?
• What can we expect for extreme rainfall in the coming decades?

These aren’t just academic questions—they inform billions of dollars in infrastructure investments, urban planning decisions, and climate adaptation strategies.

Looking Forward

With 8 articles available through public access mandates, Chenxi’s work is reaching beyond the traditional academic audience. His research trajectory from 2019 to 2026 shows increasing sophistication in methods, expanding geographic scope, and growing impact in the field.

As cities continue to grow and climate change intensifies, researchers like Chenxi Hu are essential for understanding the complex interactions between human development and Earth’s weather systems. His work reminds us that climate change isn’t just about global averages—it’s about how specific places, especially our cities, will experience increasingly extreme weather.

Chenxi Hu’s research profile can be found at the Jackson School of Geosciences, The University of Texas at Austin. His verified email is at jsg.utexas.edu.

For those interested in diving deeper into his work, his most-cited papers on urbanization impacts in the Pearl River Delta region and tropical cyclone rainfall extremes provide excellent entry points into this critical area of climate science.