【摘 要】
：
倒春寒[1～2]是指云南春季2～4月已明显回暖时出现的强冷空气过程,以持续低温为主要特征,是云南主要的灾害性天气之一.范围大、持续时间长、降温幅度大、气温低并伴有降雪的混合
【出 处】
：
2012年高原山地气象研究暨西南区域气象学术交流会
论文部分内容阅读
倒春寒[1～2]是指云南春季2～4月已明显回暖时出现的强冷空气过程,以持续低温为主要特征,是云南主要的灾害性天气之一.范围大、持续时间长、降温幅度大、气温低并伴有降雪的混合型强倒春寒带来冻害和寒害,严重影响云南农业生产,造成重大的经济损失.伴有雨雪天气的云南强倒春寒过程多与南支槽、冷锋和切变线密切相关,近年来气象学者对强倒春寒和低温雨雪天气进行多方面的研究[3～6],如郑建萌等[3]详细讨论了倒春寒的发生与乌拉尔山高压脊、西伯利亚横槽转竖和南支槽的关系;尤红等[4]对无南支槽配置的昆明准静止锋和高空切变线环流形势下,有强雪雨的强倒春寒过程形成和持续的物理条件进行深入分析.
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