An Hourly Assimilation–Forecast Cycle: The RUC
NOAA Environmental Modeling Center · University of Colorado Boulder · +2 more institutions
Abstract
The Rapid Update Cycle (RUC), an operational regional analysis–forecast system among the suite of models at the National Centers for Environmental Prediction (NCEP), is distinctive in two primary aspects: its hourly assimilation cycle and its use of a hybrid isentropic–sigma vertical coordinate. The use of a quasi-isentropic coordinate for the analysis increment allows the influence of observations to be adaptively shaped by the potential temperature structure around the observation, while the hourly update cycle allows for a very current analysis and short-range forecast. Herein, the RUC analysis framework in the hybrid coordinate is described, and some considerations for high-frequency cycling are discussed.…
Citation impact
- FWCI
- 27.48
- Percentile
- 100%
- References
- 47
Authors
11- SGStanley G. BenjaminCorresponding
NOAA Environmental Modeling Center, University of Colorado Boulder, NOAA National Centers for Environmental Prediction, Cooperative Institute for Research in Environmental Sciences
- DDD. Dévényi
Cooperative Institute for Research in Environmental Sciences, NOAA National Centers for Environmental Prediction, NOAA Environmental Modeling Center, University of Colorado Boulder
- SSStephen S. Weygandt
NOAA National Centers for Environmental Prediction, Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder, NOAA Environmental Modeling Center
- KJKevin J. Brundage
NOAA Environmental Modeling Center, NOAA National Centers for Environmental Prediction, Cooperative Institute for Research in Environmental Sciences, University of Colorado Boulder
- JMJohn M. Brown
University of Colorado Boulder, NOAA National Centers for Environmental Prediction, Cooperative Institute for Research in Environmental Sciences, NOAA Environmental Modeling Center
Topics & keywords
- Radiosonde
- Data assimilation
- Environmental science
- Meteorology
- Grid
- Isentropic process
- Climatology
- Geodesy
- Life in Land