1961—2008年阿勒泰地区异常初终霜日变化特征

气象与环境学报

1961—2008年阿勒泰地区异常初终霜日变化特征

白松竹¹;李焕²;田忠锋¹

1.阿勒泰地区气象局，新疆阿勒泰 836500;2.哈巴河县气象局，新疆阿勒泰 836500

收稿日期:2010-08-03 修回日期:2010-09-08 出版日期:2010-10-29 发布日期:2010-10-29

Characteristics of anomalous first/last frost day in Aletai region from 1961 to 2008

BAI Song-zhu¹;LI Huan²;TIAN Zhong-feng¹

1. Aletai Meteorological Bureau, Aletai 836500, China; 2. Habahe Meteorological Bureau, Habahe 836500, China

Received:2010-08-03 Revised:2010-09-08 Online:2010-10-29 Published:2010-10-29

摘要/Abstract

摘要： 以小于等于0 ℃最低气温作为霜冻指标，利用1961—2008年阿勒泰地区7个测站的逐日最低气温资料，采用现代气候诊断分析方法，分析了该地区初、终霜日和无霜期的气候变化特征。结果表明：近48 a来阿勒泰大部分地区呈初霜迟、终霜结束的早、无霜期延长的趋势，使作物生长季延长，其中哈巴河表现最为显著；极早初霜日发生频数为2—6次，以富蕴最多，极晚终霜日发生频数为1—4次。各站最迟、最早初霜日的差值和最早、最迟终霜日的差值均在30 d以上；哈巴河霜日发生了气候突变。

关键词: 初终霜日, 年代际变化, 气候突变

Abstract: Frost index was defined by the minimum air temperature less than or equal 0 ℃ in this paper. Based on the daily minimum air temperature data from 7 weather stations in Aletai regions during 1961 to 2008, the characteristics of first/last fronts day and frost-free season were analyzed by modern climatology diagnosis method. The results indicate that the first frost day delays and the last frost day is ahead, and frost-free season extends in the recent 48 years in Aletai regions. Thus, growth seasons of crops are also prolonged obviously, especially in Habahei region. Frequency of the exceptional first frost day is 2-6-time and the most occurs in Fuyun, while that of the exceptional last frost day is 1-4-time. The differences between the earliest and latest first frost day and between the earliest and latest late frost day are more than 30 days. Furthermore, only in Habahe region the frost day occurs an abrupt change.

中图分类号:

P423.4

白松竹,李焕,田忠锋. 1961—2008年阿勒泰地区异常初终霜日变化特征[J]. 气象与环境学报, doi: .

BAI Song-zhu;LI Huan;TIAN Zhong-feng. Characteristics of anomalous first/last frost day in Aletai region from 1961 to 2008[J]. Journal of Meteorology and Environment, doi: .

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