摘要
根据1957～2002年45个冬季的广西逐日霜冻天气图资料,按农业区划对气候要素保证率要求原则选择出45个冬季的异常霜冻天气过程共9次,计算它们的寒冷度、冰冻度和持续性指数,对入选过程进行排序分析,确定1954～1955年冬天发生的霜冻天气过程是1950年以来最严重的一次异常霜冻天气过程。这一结果与实际影响较一致,设置特征指数以量化的方式综合评判广西异常霜冻天气的气象学特征,具有明晰的物理意义,可操作性强。
The daily information of freeze weather of 45 winters from 1957 to 2002 are used to analyze the abnormal frostbite weather process in Guangxi. Nine abnormal frostbite weather process arc determined according to requirement of agricultural division. The indices of coldness, freeze, duration and synthesis are calculated. The determined processes of abnormal frostbite weather are placed. The abnormal frostbite weather in the period of 1954 to 1955 is the heaviest since 1950. The result is in line with the field observation. The judgment of abnormal frostbite weather by characteristic indices is helpful in practice.
出处
《广西科学》
CAS
2003年第1期72-74,80,共4页
Guangxi Sciences
基金
广西壮族自治区气象局重大研究项目资金资助。
