TURBULENCE SIMULATION IN THE METEOROLOGICAL-OFFICE

Progress in simulating turbulence in the Meteorological Office is desc ribed. Applications of the 'large-eddy' model include boundary layers, gravity waves and clouds of various types. In each area there is some evidence of good performance. The technique has considerable potentia l for increasing our understanding of atmospheric processes and helpin g to improve forecast model parametrizations. Validation of the model using high-quality observations continues to be very important..