文档介绍：张掖市近50年气候变化特征
目录
摘要： - 2 -
Abstract - 4 -
引言 - 5 -
1 研究区概况 - 6 -
2 数据来源和分析方法 - 7 -
资料来源 - 7 -
分析方法 - 7 -
气候倾向率 - 7 -
Mann- Kendall突变检验 - 7 -
Morlet小波分析 - 8 -
3 结果与分析 - 9 -
- 9 -
- 9 -
- 12 -
突变分析 - 15 -
张掖市气温突变分析 - 15 -
张掖市降水量突变分析 - 18 -
- 20 -
- 21 -
张掖市年降水量小波分析 - 21 -
4 结论 - 22 -
参考文献 - 23 -
致谢 - 27 -
张掖市近50年气候变化特征分析
邢作栋
（西北师范大学地理与环境科学学院甘肃兰州 730070）
摘要：依据1960-2012年间甘肃省张掖市逐月气温和降水量的资料，对当地近50年的气候变化特征进行分析。结果表明：（1）张掖市年平均气温温整体上呈明显的上升趋势，℃/10a，℃ /10a，℃/10a的增温速率。张掖市年和季平均气温均存在突变，年平均气温突变开始于1987—1990年前后， ℃。（2）张掖市年平均最高和最低气温的变化特征与年平均气温基本相同。℃/10a，℃/10a。（3）张掖市年降水量整体呈上升趋势，。各季节平均气温秋季上升趋势最明显，。冬季降水量存在突变，突变开
Lanzhou
730070, Gansu, Chian）
Abstract： This thesis analyzes the information on the monthly temperature and precipitation of Zhangye city in Gansu province from the year of 1960 to the year of 2012. The climate change during the 50 years reflects three points as follows: firstly, the average temperature of every year and every quarter saw an obvious rising tendency. The annual average climate tendency rate was 0. 426℃/10a, which was actual higher than that of China (0. 22℃ /10a) during the 50 years, even much higher than the global data (℃ /10a). Also, the average temperature of every year and every quarter in Zhangye city varied suddenly. The former change started from about the year of 1987 to 1990, differing by ℃. Secondly, the tendency of the annual average highest temperature as well as lowest temperature in this city, which were 0
.474℃/10a and ℃/10a respectively, were similar with the tendency of the annual average temperature. Thirdly, in Zhangye city, the average precipitation of every year and every month rose in general, especi