Flavio Lehner

Assistant Professor

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Flavio is a climate scientist and Assistant Professor of Atmospheric Sciences at Cornell University and also affiliated with the non-profit Polar Bears International and the National Center for Atmospheric Research in Colorado. His interests range from seasonal to centennial climate variability, how it imprints on regional weather and climate, and how it influences our ability to detect and attribute changes in climate. He focuses on hydroclimate dynamics and large-scale atmospheric circulation.

Hanjun Kim

Postdoctoral Associate

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Hanjun is a postdoctoral associate who earned his Ph.D. from the Ulsan National Institute of Science and Technology, South Korea. He investigates the causes of climate projection uncertainty, focusing on the hydrological cycle. He has utilized concepts of the atmospheric and oceanic teleconnections, energy balance, and radiative feedbacks to understand the mechanisms of global and regional climate change.

Ankur Dixit

Postdoctoral Associate

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Ankur is a postdoctoral associate, having earned a Ph.D. in Atmospheric Sciences from the Indian Institute of Technology Delhi, India. He worked on hydroclimate modeling for the Himalayan basin to study the climate change impacts on snow/water fluxes in the region. He has diverse research interests including climate change/modeling, hydrological modeling, parameter optimization, remote sensing and GIS. Post-PhD, he worked in Climate Resilience and Disaster Risk Reduction consulting with PricewaterhouseCoopers (PwC) India until joining Cornell University.

Yan-Ning Kuo

Graduate Student

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Yan-Ning  is a PhD student in Atmospheric Science, having recently completed a Bsc in Atmospheric Science from National Taiwan University. Her research interests encompass hydrologic responses to climate variability and change, as well as land-atmosphere interactions. 

Richard Toohey

Graduate Student

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Richard is a PhD student in Atmospheric Science, having recently completed his BS and MS in Physics from the University of Wisconsin-Madison. He has a broad set of research interests that generally focus on understanding mechanisms of climate variability and climate change, land-atmosphere interactions, and global and regional impacts of climate change.

Ashley Huang

Undergraduate Student

Ashley is an Honours student in Climate Science from the Australian National University. She is working with Prof. Flavio Lehner and Yan-Ning Kuo on using climate model simulations to investigate influence of tropical sea surface temperatures on global weather and climate.


Former group members

HaoYu “Richard” Zhuang

Undergraduate Student

HaoYu  was an undergraduate student in Atmospheric Science and worked with Prof. Art DeGaetano and Flavio on using pattern recognition methods to identify atmospheric predictors of ice storms over the US in observations and climate model simulations. 

Richard went on to start a PhD at the University of Washington.


Josh Sayre

Undergraduate Student

Josh was an undergraduate student in Geology and worked on a semester project quantifying the drought sensitivity of the Western US with respect to atmospheric ridging and associated precipitation and temperature anomalies.

Josh went on to start a PhD at Western Washington University.



Check out current openings in our group here: