Event: Understanding Urban Convection and Haze

Understanding Urban Convection and Haze

Institute of Urban Meteorology, China Meteorological Administration, Beijing, China

February 8th, 2017 – 12:00 pm
Sheppard Hall, room 107

Half the global population will be in cities by 2025. Cities modify atmospheric energy and moisture balances, forming local climates such as urban heat islands (UHIs) and enhanced precipitation. These changes produce significant challenges to science and society.  The Beijing megacity experiences such severe events, e.g., 2012 flooding killed 79 and caused losses of $2B.

Despite significant research into urban effects on weather and air quality, important science issues remain, e.g., urban-thermodynamic and aerosol impacts on summer convective precipitation and interactions between urban and regional climate changes.  Observations are fundamental for understanding these interactions, improving forecasts, and providing useful information to end-users.  Previous large urban field campaigns have not been coordinated by a group such as the Beijing Institute of Urban Meteorology (IUM), with its responsibilities for both boundary layer research and real time urban weather forecasting.  The overall science objective of the 2014-8 SURF Project is thus a better understanding of urban, terrain, convection, and aerosol interactions for improved forecast accuracy.  Beijing is a test case, but the improved understandings are transferable to many large cities globally. Specific objectives include:

  • Promote cooperative international-research to improve understanding of urban weather-systems via summer thunderstorm-rainfall and winter aerosol field studies.
  • Improve high-resolution (∼1 km grid) urban weather and air quality forecast-models.
  • Enhance urban weather forecasts for societal applications.

Recent significant developments of SURF and open challenges will be discussed.

Shiguang_MiaoShiguang Miao is Senior Scientist and Director of the Institute of Urban Meteorology, China Meteorological Administration, in Beijing, which is dedicated to urban research and operational weather forecast for Beijing. He received his Ph. D in Atmospheric Sciences at Nanjing University in 2003. He is Chair of the Committee for Urban Meteorology of the Chinese Meteorological Society, member of the Board on the Urban Environment of the American Meteorological Society, and Adjunct Professor in Applied Meteorology at the Nanjing University of Information Science and Technology.