ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Review on the Forecast of Effect of Typhon Maisha on Beijing
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Abstract:
Typhoon Maisha(0509) moved northward after landing on Zhejiang. Beijing Meteorol ogical Observatory predicted that the typhoon would bring heavy rainfall to Beij ing. Actuall y, there was the heavy rain only in the northeastern Beijing and the moderate ra in in the most of the city. To understand typhoon heavy rainfall in Huabei deepl y, an analysis of this unsuccessful forecast is performed by using the conventi onal meteorological data and the satellite images. The results show that (1) the numerical forecast of the typhoon track had an error, (2) the typhoon maintain ed asymmetry structure and heavy rain occurred only in the east and north of the typhoon, (3) the weak southeast jet occurred mainly in the east of 120°E and (4) since Huabei high pressure obstructed cold air from the great band of Yello w River moving eastward, the interactionbetween lowlatitude and middlelatitude synoptic system could not formed. In addition, it provides some instructions for the forecast and service of typhoon heavy ra infall in Beijing.
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