Prediction of a typhoon using a fine‐mesh NWP model

Dell'osso, L.; Bengtsson, Lennart

doi:10.1111/j.1600-0870.1985.tb00273.x

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Prediction of a typhoon using a fine‐mesh NWP model

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Dell'osso, L., & Bengtsson, L. (1985). Prediction of a typhoon using a fine‐mesh NWP model. Tellus Series A-Dynamic Meteorology and Oceanography, 37 A, 97-105. doi:10.1111/j.1600-0870.1985.tb00273.x.

Cite as: https://hdl.handle.net/21.11116/0000-000B-1B67-4

Abstract

The ECMWF operational grid point model (with a resolution of 1.875° of latitude and longitude) and its limited area version (with a resolution of !0.47° of latitude and longitude) with boundary values from the global model have been used to study the simulation of the typhoon Tip. The fine‐mesh model was capable of simulating the main structural features of the typhoon and predicting a fall in central pressure of 60 mb in 3 days. The structure of the forecast typhoon, with a warm core (maximum potential temperature anomaly 17 K). intense swirling wind (maximum 55 m s−1 at 850 mb) and spiralling precipitation patterns is characteristic of a tropical cyclone. Comparison with the lower resolution forecast shows that the horizontal resolution is a determining factor in predicting not only the structure and intensity but even the movement of these vortices. However, an accurate and refined initial analysis is considered to be a prerequisite for a correct forecast of this phenomenon. 1985 Blackwell Munksgaard