Original Articles

Temporal and Spatial Variations of the Drought in the Warm Half Year over Northern China

  • 1. China Meteorological Adiministration Training Centre, Beijing 100081, China;
    2. Chinese Academy of Meteorological Sciences, Beijing 100081, China

Received date: 2011-03-01

  Revised date: 2011-06-01

  Online published: 2011-11-25


Daily precipitation data from 348 stations in northern China are selected to construct the time series of the periods of the longest consecutive dry days in the warm half year (April-September) that is divided into four sub-regions. The empirical mode decomposition (EMD) method is used to obtain intrinsic mode functions (IMFs) by which variations are analyzed at various time scales. Based on wavelet analysis and other methods, sudden jump points are found. Results show that the variation of the longest consecutive dry period is mainly composed of two higher frequency intrinsic mode functions, and their contribution ratio is 80% to the total variance. This shows that 3-4 year and 7-8 year oscillations play important roles. Lower frequency components reflect the inter-annual variation of about 10 years. There is an increasing trend of the longest consecutive dry period in the warm half year in northeast China, north China, and eastern part of northwest China, and the droughts in most of northern China are increasing, but decreasing in the western part of northwest China. For the last 10 years, it get drier in northeast China, while it gets wetter in the eastern part of northwest China. The significant increase of the longest consecutive dry periods observed in north China in 1992 and in northwest China in 1960 was associated with the droughts. The results obtained may be different from each other owing to the differences in temporal and spatial scales.

Cite this article

LIU Lihong, ZHAI Panmao, ZHENG Zhuguang, LIU Xiaoling . Temporal and Spatial Variations of the Drought in the Warm Half Year over Northern China[J]. PROGRESS IN GEOGRAPHY, 2011 , 30(11) : 1380 -1386 . DOI: 10.11820/dlkxjz.2011.11.007


[1] 王志伟, 翟盘茂. 中国北方近50 年干旱变化特征. 地理学报, 2003, 58(增刊): 61-68.

[2] Zou X K, Zhai P M, Zhang Q. Variations in droughts overChina: 1951-2003. Geophysical Research Letter, 2005,32: L04707,doi: 10.1029/2004GL021853.

[3] 马柱国, 华丽娟, 任小波.中国近代北方极端干湿事件的演变规律. 地理学报, 2003, 58(增刊): 69-74.

[4] 张强, 邹旭恺, 肖风劲, 等. GB/T20481-2006, 气象干旱等级. 中华人民共和国国家标准. 北京: 中国标准出版社, 2006.

[5] 姚玉璧, 董安祥, 王毅荣, 等. 基于帕默尔干旱指数的中国春季区域干旱特征比较研究. 干旱区地理, 2007, 30(1): 22-29.

[6] 王兴梅, 张勃, 张凯, 等. 石羊河流域极端干旱事件的时空变化特征. 地理科学进展, 2011, 30(3): 299-305

[7] 王绍武, 龚道溢, 翟盘茂. 西部地区的气候变化//秦大河. 中国西部地区的环境演变. 北京: 科学出版社,2002: 31-80.

[8] 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. 冰川冻土. 2002, 24(3):219-226.

[9] 龚道溢, 韩晖. 华北农牧交错带夏季极端气候的趋势分析. 地理学报, 2004, 59(2): 230-238.

[10] 翟盘茂, 邹旭恺. 1951-2003 年中国气温和降水变化及其对干旱的影响. 气候变化研究进展, 2005, 1(1): 16-18.

[11] Bhalme H N, Mooley D A. Large-Scale drought/floodsand Monsoon circulation. Monthly Weather Review,1980, 108: 1197-1211.

[12] Palmer W C. Meteorological Drought. Weather BureauRes. Paper 45.U.S. Department of Commerce: Washington,DC, 1965: 58.

[13] Frich P, Alexander L N, Della-Marta P, et al. Observed coherentchanges in climatic extremes during the secondhalf of the twentieth century. Climate Research, 2002, 19(3): 193-212.

[14] 翟盘茂, 潘晓华.中国北方近50 年温度和降水极端事件变化. 地理学报, 2003, 58(增刊): 1-10.

[15] Huang N E, Zheng S, Steven R L, et al. The empiricalmode decomposition and the Hilbert spectrum for nonlinearand non-stationary time series analysis. Proceedingsof the Royal Society of London, 1998, 454: 903-995.

[16] 郑祖光, 刘莉红. 经验模态分析与小波分析及其应用.北京: 气象出版社, 2010.

[17] He J X, Yu Z H,Yang X Q, et al. Temporal characteristicsof Pacific Decadal Oscillation (PDO) and ENSO andtheir relationship analysized with method of empiricalmode decomposition (EMD). Acta Meteorological Sinica,2005, 19(1): 83-92.

[18] 杜建丽, 林振山, 张真真, 等. 中国GDP增量与能源消费增量关系的多尺度分析. 地理科学进展, 2009, 28(1):119-124.

[19] 韦志刚, 黄荣辉, 董文杰. 青藏高原气温和降水的年际和年代际变化. 大气科学, 2003, 27(2): 157-170.

[20] 刘太中, 刘式达, 郑祖光, 等. 气候突变的子波分析. 地球物理学报, 1995, 38(2): 158-162.

[21] 徐长发, 李国宽. 实用小波方法. 2 版. 武汉: 华中科技大学出版社, 2004: 107-119.

[22] 刘莉红, 郑祖光. 近百余年我国气温变化的突变点分析. 南京气象学院学报, 2003, 26(3): 378-383.

[23] 刘莉红, 郑祖光. 我国1 月和7 月气温变化的分析. 热带气象学报, 2004, 20(2): 151-160.

[24] 魏凤英. 现代气候统计诊断与预测技术. 北京: 气象出版社, 2007: 23-66.

[25] 何斌, 武建军, 吕爱锋. 农业干旱风险研究进展. 地理科学进展, 2010, 29(5): 557-564.

[26] 袁文平, 周广胜. 旱指标的理论分析与研究展望. 地球科学进展, 2004, 19(6): 982-991.