[1]田宝星,宫丽娟,杨帆,等.黑龙江省春季低温指数小波分析[J].水土保持研究,2017,24(01):342-345,350.
　TIAN Baoxing,GONG Lijuan,YANG Fan,et al.Wavelet Analysis on Lowest Temperature Index in Spring in Heilongjiang Province[J].Research of Soil and Water Conservation,2017,24(01):342-345,350.
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黑龙江省春季低温指数小波分析

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 24 期数: 2017年01期 页码: 342-345,350 栏目: 出版日期: 2017-02-28
Title:
Wavelet Analysis on Lowest Temperature Index in Spring in Heilongjiang Province
作者:
田宝星1, 宫丽娟1, 杨帆2, 李浩然3, 季生太1, 于敏1
1. 黑龙江省气象科学研究所, 哈尔滨 150030;
2. 黑龙江省气象局机关服务中心, 哈尔滨 150030;
2. 东北农业大学 资源与环境学院, 哈尔滨 150030
Author(s):
TIAN Baoxing1, GONG Lijuan1, YANG Fan2, LI Haoran3, JI Shengtai1, YU Min1
1. Heilongjiang Province Institute of Meteorological Science, Harbin 150030, China;
2. Heilongjiang Meteorological Bureau In-house Service Centre, Harbin 150030, China;
3. College of Resources and Environment, Northeast Agricultural University, Harbin 150030, China
关键词:
低温; 春季; 小波分析; 黑龙江省
Keywords:
low temperature; spring; wavelet analysis; Heilongjiang Province
分类号:
P49
摘要:
通过黑龙江省1971—2014年春季最低气温资料，结合低温指数模型，利用趋势分析和Morlet小波函数，研究了黑龙江省近44年来的春季低温指数变化趋势，揭示了该地区春季低温指数的多时间尺度的周期性变化。结果表明：黑龙江省春季低温指数呈现减少趋势，1980s以来气温明显增加，春季低温指数明显减少，而2010s春季低温指数明显增加，与极端气温的升高有关。春季低温指数存在3个尺度的周期变化，分别是17～29 a，7～16 a和3～6 a。17～29 a和7～16 a尺度非常稳定，具有全域性。4～14 a尺度在1990s后期较为稳定。10～15 a尺度周期变化最明显。11～15 a尺度能量最强且周期最显著；10～18 a尺度能量几乎贯穿整个时域；19～26 a尺度占据整个研究时域大部分。其中春季低温指数具有20 a，12 a，6 a和2 a左右的主周期，其中12 a尺度为第一主周期，平均周期为8.5 a。
Abstract:
Based on the owest temperature index model and the lowest temperature data of Heilongjiang Province in spring from 1971 to 2014, trend prediction and Morlet wavelet were used to examine the change trend and periodic change of multiple time scale to the lowest temperature index of spring in Heilongjiang Province during the past 44 years. The results showed that it was a downtrend to the lowest temperature index of spring in Heilongjiang Province. The lowest temperature index of spring had significantly decreased as the temperature had increased obviously since 1980s. However, the lowest temperature index of spring significantly increased with the rise of extreme temperature in 2010s. There were 3 periodic changes of scales in the lowest temperature of spring, which were 17～29 years, 7～16 years, and 3～6 years. The scales of 17～29 years and 7～16 years were very stable in the whole duration. The scale of 4～14 years was more stable in the later of 1990s. The scale of 10～15 years was the most obvious. The scale of 11～15 years was the strongest energy and most significantly cycle. The energy of 10～18 years was almost throughout the whole duration. The scale of 19～26 years occupied in the most of whole duration. The main cycle of the lowest temperature index of spring had 20 years, 12 years, 6 years, 2 years, the scale of 12 years was the first main cycle, and the average cycle was about 8.5 years.

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备注/Memo

收稿日期:2016-01-06;改回日期:2016-02-14。
基金项目:气象关键技术集成与应用项目（CMAGJ2015M18）；黑龙江省气象局科学技术研究（HQJJ2015018，HQ2016015）
作者简介:田宝星(1986-),男,黑龙江哈尔滨人,助理工程师,硕士,主要从事应用气象和气候资源研究。E-mail:bx_tian@163.com
通讯作者:于敏(1975-),女,黑龙江哈尔滨人,高级工程师,博士,主要从事大气遥感与大气环境及应用气象研究。E-mail:yy629@sina.com

更新日期/Last Update: 1900-01-01