宁夏近44年霜冻的气候特征和变化规律分析  

The Climatic Features and the Change Regulation of Frost from 1961 to 2004 in Ningxia

作　　者：唐晶[1] 张文煜[1] 赵光平[2] 陶林科 王建英 赵立斌 张智[2] 

机构地区：[1]兰州大学大气科学学院,甘肃兰州730000 [2]宁夏气象局,宁夏银川750002 [3]吴忠市气象台,宁夏吴忠751100

出　　处：《沙漠与绿洲气象》2008年第2期15-18,共4页Desert and Oasis Meteorology

摘　　要：对宁夏近44a来初(终)霜日、无霜期的气候特征和气候变化用现代气候诊断方法进行了分析,结果表明:宁夏大部分地区初霜提早的概率小于终霜推迟的概率;20世纪60年代到70年代,无霜期缩短,80年代以后初霜日推迟,终霜日提前,无霜期延长;44a来初霜日逐渐推迟,终霜日明显提早,无霜期明显的延长,1981—2004年固原地区表现出初、终霜日不明显提早,无霜期有非常不明显的缩短趋势,44a来初、终霜日发生了气候突变。Based on the method of modem climate diagnosis, this paper has analyzed the climate features and change of frost from 1961 to 2004 in Ningxia. The results show that the probability of delay of latest frost was more than the probability of advance of first frost in most areas of Ningxia and the frostless period was shorten in 1960s and 1970s, the first frost appeared late and the last frost ended early so made the frostless period prolonged since 1980s, and the first frost appeared late gradually and the last frost ended early significantly and made the frostless period prolong in the past 44 years, meanwhile it happened the abrupt change for the date of first frost and latest frost in Ningxia. But in Guyuan region, the date of first frost and latest frost was not early obviously and the shorten trend of frostless period was not obvious very much in 1981-2004.

关 键 词：宁夏霜冻 年代际气候变化 气候突变 

分 类 号：P426[天文地球—大气科学及气象学]