Hans Chen

Hans Chen

  • Ph.D. Graduate Student
624 Walker Building
University Park, PA 16802
Email: hans.chen@psu.edu


  1. M.S. in Atmospheric Sciences, Oceanography and Climate, Department of Meteorology, Stockholm University, Sweden (2012)
  2. B.S. in Meteorology, Department of Meteorology, Stockholm University, Sweden (2010)


After completing his Master's degree at Stockholm University in Sweden, Hans joined Penn State as a doctoral student to continue pursuing his interest in climate dynamics. During his first years at the Department of Meteorology and Atmospheric Science, he investigated whether and how the recent rapid decline of Arctic sea-ice cover affects weather patterns in the mid-latitudes.

His current research focuses on the fluxes and transport of carbon dioxide over the contiguous United States. More specifically, he wants to answer the following question: How much can we learn about regional sources and sinks of carbon dioxide using measured carbon dioxide concentration in the atmosphere? To address this question, Hans is developing a novel inversion method based on the Ensemble Kalman Filter data assimilation technique, which will provide a test bed for evaluating how gaps in our knowledge of carbon dioxide fluxes and uncertainties in the atmospheric transport will impact the final estimated carbon dioxide fluxes.

For more information, please visit http://hanschen.org.

Research interests

  • Climate variability and climate change
  • General circulation of the atmosphere and teleconnection patterns
  • Data assimilation and ensemble techniques
  • Fluxes and transport of carbon dioxide