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沙尘天气分为哪五个等级

更新时间: 2022-12-09 13:48:59     

沙尘天气分为:浮尘、扬沙、沙尘暴、强沙尘暴、特强沙尘暴五个等级,扬沙是指风将地面尘沙吹起,使空气混浊,水平能见度在1km-10km以内,沙尘暴是强风将地面尘沙吹起,使空气很混浊,水平能见度小于1km。

浮尘:当天气条件为无风或者平均风速小于等于每3米4秒时,尘沙浮游在空中,使水平能见度小于10千米的天气现象,强沙尘暴:大风将地面尘沙吹起,使空气非常混浊,水平能见度小于500m,特强沙尘暴:狂风将地面尘沙吹起,使空气特别混浊,水平能见度小于50m的天气现象。

关键词: 沙尘 天气 分为 等级

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