The interaction of large-scale quasi-stationary waves with regional forcing in the drought of 1988 and flood of 1993 in the north central United States was examined using a mesoscale numerical model. When the observed large-scale quasi-stationary wave anomalies in the dynamic and thermodynamic fields were filtered through adjustment of the observationally-based lateral boundary conditions, predicted rainfall and meteorological fields over the drought and flood regions tended toward those for normal years. This method for quantifying, isolating and filtering the relevant large-scale anomalies allows us to infer specific scale interaction mechanisms that produce regional hydrologie consequences of large-scale circulation patterns.
|Number of pages||5|
|Publication status||Published - 1999|
ASJC Scopus subject areas
- Water Science and Technology