Objective Classification of Heavy Rain Weather Situation in Dongguan
In order to improve the ability of fine prediction of heavy rain,an unsupervised artificial neural network model of self-organization mapping was used to objectively classify the processes of heavy rain in Dongguan in 2013-2023.The results are shown as follows.The processes of heavy rain in Dongguan ap-pear in six types of weather situation,including southwest wind type,front type,typhoon residual vortex type,monsoon low trough type,strong typhoon type and East Asian main trough type.As shown in compos-ite analyses,the dynamic and thermodynamic conditions differ between different types of heavy rain proces-ses,and produce different precipitation effects,thus forming corresponding types of localized forecast refer-ence index for Dongguan.
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