ISSN 1000-0526
CN 11-2282/P
CN 11-2282/P
Local Severe Convective Weather in Shanghai and Its Nowcasting Summary
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Abstract:
Based on archives of Doppler radar, AWS and other data, local severe storms in S hanghai are classified into 4 main types. After careful analysis and comparison, some forecasting points are summarized as follows. Initial places of st orms are mostly massed at north of Shanghai, which keeps close connections with surface weak convergence lines; Developing from initial echo to peak stage will take about 1 hour; Upstream echo takes priority to develop; Strong wind at 2 00hPa level can largely affect the developing pattern of local severe storms. Us ually, northwesterly is not favorable for fast moving echoes, but in case of sou thwesterly, the echo moves quite fast. Low level wind speed is crucial to echoes ' motion and triggering of strong gusts. Those points could be useful references for local severe storms' nowcasting in Shanghai and other similar areas.
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