Radar Echo Characteristics and Potential Prediction of Convective Gale in Yunnan Province
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Abstract:
In order to provide a valuable reference to shortterm weather forecast of convective gales, the indices of forecast and early warning are summarized from 〖WTBX〗T〖WTBZ〗ln〖WTBX〗p〖WTBZ〗, convective parameters, radar echoes, etc. According to the cases of gales from 2006 to 2009, it is found that gales frequently occurred in summer and had a local feature, showing bimodal distribution with the peak values in April and July. The convective parameters had indicative meaning for convective gale forecasting. The beginning of a convective gale can be distinguished by radar echo intensity, radial velocity (≥10 m〖DK〗·s-1 at 0.5° radar elevation), and the rapid reduction after the appearing of maximum echo top height and VIL.
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Supported by:Beijing E-Tiller Technology Development Co., Ltd.
Supported by:Beijing E-Tiller Technology Development Co., Ltd.