近50年陕北地区的气候变化

摘要/Abstract

摘要： 通过累积距平法、Mann-Kendall法和Morlet小波分析等方法,对陕北地区近50年来的气候变化多尺度和跃变(突变)现象进行了分析。结果表明:近50年来,陕北地区年平均气温有上升趋势,变化倾向率为0.296℃/10a,年平均气温在1994-1995年发生了由低温到高温的突变;陕北地区年降水量呈下降趋势,变化倾向率为-12.455mm/10a,年降水量在1974-1975年和2000年都发生了由少到多的突变。Morlet小波分析表明,陕北年平均气温存在25年的强显著周期,此外还有4年、5~10年不等的小尺度周期变化;陕北年降水存在24年、7年、5年和3年的显著周期,且大周期尺度比小周期尺度更为显著。陕北气候暖干化的原因主要是海－气相互作用的大气环流因子,此外,城市化因素对气候的影响也应引起重视。

关键词: 气候变化, 降水量, 气温, 变化趋势, 陕北

Abstract: Global warming has become evident since the last years of the twentieth century, and the climate in Shaanxi Province is affected by it in varying degrees. Based on the monthly data of temperature and precipitation during the period 1960-2008, this paper analyzes the sharp climate change at multi-time scales in north Shaanxi Province using the cumulative anomaly, Mann-Kendall test, Morlet wavelet analysis, etc. The results show that there was a significant climate warming trend with a temperature increase of 0.296 ℃/10 a in north Shaanxi Province, and a sharp change from low temperature to high temperature occurred during the period 1994-1995; annual precipitation was in a decrease trend, its linear trend rate was -12.455 mm/10 a in recent 50 years, and the sharp change from precipitation decrease to increase occurred in the mid-1970s and 2000. The Morlet wavelet analysis was used to analyze the change periods of annual temperature and precipitation. The results reveal that the annual temperature fluctuated significantly with periods of 25 years, 4 years and 5-10 years, and the annual precipitation fluctuated with periods of 24 years, 7 years, 5 years and 3 years, respectively, especially at large time scale. The atmospheric circulation factors of air-sea interaction are the main causes resulting in climate change towards warming-drying pattern in north Shaanxi Province, and the effect of urbanization on climate change should be paid more attention.

Key words: climate change, precipitation, temperature, change trend, north Shaanxi Province

中图分类号:

P467

王德丽, 殷淑燕, 王海燕, 孟丹丹. 近50年陕北地区的气候变化[J]. 干旱区研究, 2011, 28(2): 262-267.

WANG De-li, YIN Shu-yan, WANG Hai-yan, MENG Dan-dan. Analysis on Climate Change in North Shaanxi Province[J]. , 2011, 28(2): 262-267.

参考文献

[1] IPCC.Climate Change 2007:The Physical Science Basis.Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change[R].Cambridge,United Kingdom and New York,USA:Cambridge University Press,2007.

[2] 郭慕萍,王志伟,秦爱民,等.54年来中国西北地区降水量的变化[J].干旱区研究,2009,26(1):120-125.[Guo Muping,Wang Zhiwei,Qin Aimin,et al.Changes in precipitation in Northwest China over the last 54 years[J].Arid Zone Research,2009,26(1):120-125.]

[3] 何永涛,李文华,郎海鸥.黄土高原降水资源特征与林木适宜度研究[J].干旱区研究,2009,26(3):406-412.[He Yongtao,Li Wenhua,Lang Haiou.Study on the characteristics of precipitation resources and the afforestation suitability in the Loess Plateau[J].Arid Zone Research,2009,26(3):406-412.]

[4] 傅朝,王毅荣.中国黄土高原月降水对全球变化的响应[J].干旱区研究,2008,25(3):447-451.[ Fu Zhao,Wang Yirong.Response of monthly precipitation in the Loess Plateau in China to global climate change[J].Arid Zone Research,2008,25(3):447-451.]

[5] 高蓓,栗珂,李艳丽.陕西近40年气候变化特征的分析[J].成都信息工程学院学报,2006,21(2):290-295.[Gao Bei,Li Ke,Li Yanli.Analysis of Shannxi climate changes during past 40 years[J].Journal of Chengdu University of Information Technology,2006,21(2):290-295.]

[6] 庞雷.气候变化对陕西省水资源的影响[J].陕西水利,2009(3):39-42.[Pang Lei.The impact of climate change upon water resource of Shaanxi province[J].Shaanxi Water Resources,2009(3):39-42.]

[7] 蔡新玲,乔秋文,王繁强,等.近45年来陕西省可利用的降水资源特征及变化[J].干旱区研究,2008,25(2):282-287.[Cai Xinling,Qiao Qiuwen,Wang Fanqiang,et al.Characteristics and change of available water resources in Shaanxi province since recent 45 years[J].Arid Zone Research,2008,25(2):282-287.]

[8] 刘晓琼,刘彦随,延军平,等.生态脆弱区多年气候变化特征分析——以陕西省榆林市为例[J].干旱区资源与环境,2008,22(1):54-59.[Liu Xiaoqiong,Liu Yansui,Yan Junping,et al.Analysis on climatic changes under global climatic change—A case study of Yulin city[J].Journal of Arid Land Resources and Environment,2008,22(1):54-59.]

[9] 王川,杜继稳,杜川利,等.530年来陕北气候变化与东部地区关系分析[J].西北大学学报:自然科学版,2004,34(2):238-241.[Wang Chuan,Du Jiwen,Du Chuanli,et al.The analysis of variation of climate in the north Shaanxi and the relationship with eastern regions for the last 530 years[J].Journal of Northwest University:Natural Science Edition,2004,34(2):238-241.]

[10] 杜继稳,鲁渊平,雷向杰,等.陕北生态环境治理的气候背景[J].西北大学学报:自然科学版,2001,31(4):363-368.[Du Jiwen,Lu Yuanping,Lei Xiangjie,et al.The climate background of ecosystem managing in the north Shaanxi[J].Journal of Northwest University :Natural Science Edition,2001,31(4):363-368.]

[11] 鲁渊平,杜继稳,梁生俊,等.陕北气候变化与生态植被变迁[J].生态学杂志,2005,24(1):53-57[Lu Yuanping,Du Jiwen,Liang Shengjun,et al.Climate and vegetation change in the north of Shaanxi province[J].Chinese Journal of Ecology,2005,24(1):53-57.]

[12] 符淙斌,王强.气象突变的定义和检测方法[J].大气科学,1992,16(4):482-493.[Fu Congbin,Wang Qiang.The definition and detection of the abrupt climatic change[J].Scientia Atmosphere Sinica,1992,16(4):482-493.]

[13] 崔锦泰.小波分析导论[M].西安:西安交通大学出版社,1995:66-99.[Cui Jintai.An Introduction to Wavelets[M].Xi’an:Xi’an Jiaotong University Press,1995:66-99.]

[14] 龙瑞麟.高维小波分析[M].北京:世界图书出版公司,1995:208-359.[Long Ruilin.The Analysis of High-Dimensional Wavelets [M].Beijing:World Book Press Ltd,1995:208-359.]

[15] 毕云,许利.用一维Morlet小波变换对降水作诊断分析[J].内蒙古气象,2000(4):26-28.[Bi Yun,Xu Li.The precipitation were diagnosed with the use of one-dimensional wavelet transform [J].Meteorology Journal of Inner Mongolia,2000(4):26-28.]

[16] 林振山,邓自旺.子波气候诊断技术的研究[M].北京:气象出版社,1999:1-174.[Lin Zhenshan,Deng Ziwang.Study on the Morlet Climatic Diagnostic Technique[M].Beijing:Meteorological Publishing House,1999:1-174.]

[17] 于淑秋,林学椿,徐祥德.我国西北地区近50年降水和温度的变化[J].气候与环境研究,2003,8(1):9-18.[Yu Shuqiu,Lin Xuechun,Xu Xiangde.The climatic change in northwest China in recent 50 years[J].Climatic and Environmental Research,2003,8(1):9-18.]

[18] 赵桂香,赵彩萍,李新生,等.山西省气候变化的多尺度诊断[J].干旱区研究,2007,24(2):240-246.[Zhao Guixiang ,Zhao Caiping,Li Xinsheng,et al.Study on climate change at multi-temporal scales in Shanxi province[J].Arid Zone Research,2007,24(2):240-246.]

[19] 韦志刚,董文杰,惠小英.中国西北地区降水的演变趋势和年际变化[J].气象学报,2000,58(2):234-243.[Wei Zhigang,Dong Wenjie,Hui Xiaoying.Evolution of trend and interannual oscillatory variabilities of precipitation over northwest China [J].Acta Meteorologica Sinica ,2000,58(2):234-243.]

[20] 王绍武 ,姚檀栋.近百年中国气温序列的建立[J].应用气象学报,1998,9(4):392-401.[Wang Shaowu,Yao Tandong.Const ruction of China’s annual mean temperature series of the last 100 years[J].Journal of Applied Meteorological Science,1998,9(4):392-401.]

[21] 丁一汇,王守荣.中国西北地区气候与生态环境概论[M].北京:气象出版社,2001:77-154.[Ding Yihui,Wang Shourong.The Introduction to Ecological Environment and the Climate in Northwest China[M].Beijing:Meteorological Publishing House,2001:77-154.]

[22] 左洪超,吕世华,胡隐樵.中国近50 年气温及降水量的变化趋势分析[J].高原气象,2004,23(2):238-244.[Zuo Hongchao,Lu Shihua,Hu Yinqiao.Variations trend of yearly mean air temperature and precipitation in China in the last 50 years [J].Plateau Meteorology,2004,23(2):238-244.]

[23] 施雅风,沈永平,胡汝骥.西北气候由暖干向暖湿转型的信号影响和前景初步探讨[J].冰川冻土,2002,24(3):219-226.[Shi Yafeng,Shen Yongping,Hu Ruji.Preliminary study on signal,impact and foreground of climatic shift from warm-dry to warm-humid in Northwest China[J].Journal of Glaciology and Geocryology,2002,24(3):219-226.]

[24] 李栋梁,魏丽,蔡英,等.中国西北现代气候变化事实与未来趋势展望[J].冰川冻土,2003,25(2):135-142.[Li Dongliang,Wei Li,Cai Ying,et al.The present facts the future tendency of the climate change in northwest China[J].Journal of Glaciology and Geocryology,2003,25(2):135-142.]

[25] 王鹏祥.西北地区干湿演变及其成因分析[D].南京:南京信息工程大学,2008.[Wang Pengxiang.Analysis on Evolution and Causes of Aridity-wetness in Northwest China[D].Nanjing:Nanjing University of Information Science & Technology,2008.]