Chen Baode, Wang Xiaofeng, Li Hong, Zhang Lei. 2013: An Overview of the Key Techniques in Rapid Refresh Assimilation and Forecast. Advances in Meteorological Science and Technology, 3(2): 29-35. DOI: 10.3969/j.issn.2095-1973.2013.02.003
Citation: Chen Baode, Wang Xiaofeng, Li Hong, Zhang Lei. 2013: An Overview of the Key Techniques in Rapid Refresh Assimilation and Forecast. Advances in Meteorological Science and Technology, 3(2): 29-35. DOI: 10.3969/j.issn.2095-1973.2013.02.003
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An Overview of the Key Techniques in Rapid Refresh Assimilation and Forecast

  • Shanghai Typhoon Institute of China Meteorological Administration, Shanghai 200030

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  • High-frequency assimilation and forecast (Rapid Update Cycle, RUC or Rapid Refresh, RR) have been developed for numerical weather prediction of short-range forecasting in recent years. In this paper, the history and status of RUC (or RR) are reviewed. Several relevant key issues are addressed, including: 1) adiabatic digital fi lter initialization (DFI) and diabatic digital fi lter initialization (DDFI); 2) cold start、warm start and hot start initialization techniques; 3) cloud analysis technique; 4) issues for assimilating nearsurface observations. Finally, the challenges, opportunities and future directions for rapid refresh systems are discussed.
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