EOL Seminar: Progress and prospects of radar data assimilation supporting hurricane research and forecasting

Tuesday, April 10, 2018 - 15:30 to 16:30
FL2 - 1022
Contact Name: 
Diane Sierra
Contact Email: 
Contact Phone: 

Dr. Zhaoxia Pu
University of Utah

Doppler radar has been an excellent observing platform for hurricane surveillance. It also provides unique inner-core observations for hurricane vortex initialization in numerical weather prediction. In recent years, significant progress has been made in assimilating radar radial velocity and reflectivity from both ground-based and airborne Doppler radars. It is well acknowledged that radar data assimilation is vital for an accurate prediction of hurricane track and intensity. However, there are also many challenges regarding how to better and fully utilize the radar data. Specifically, radar data assimilation relies on available radar data quality control, different retrieval methods, and configurations of the data assimilation system (e.g., 4DVAR vs. 3DVAR and EnKF, background error covariance term, etc.). Meanwhile, due to uncertainties in both cloud microphysical parameterizations and lack of reliable forward models, the assimilation of advanced dual-polarimetric radar observations presents some difficulties. The seminar will summarize current progress and challenges in radar data assimilation for hurricanes, along with some suggestions for future improvements. Specific emphasis will be placed on the influences of different radar observed components, various retrieval products, and new data assimilation technologies for hurricane analyses and prediction. The requirements for data quality control, and radar forward models, as well as new strategies in future airborne radar observing systems, will also be discussed.

Tuesday, 10 April 2018, 3:30 PM
Refreshments 3:15 PM
NCAR-Foothills Laboratory • 3450 Mitchell Lane
Bldg 2 Large Auditorium (Rm1022)
Webcast: https://ucarconnect.ucar.edu/live (Room 2: FL2-1022)