| 摘要: |
| 为了解巴彦淖尔市近60 a的气候变化特征，基于巴彦淖尔市9个气象观测站1961—2020年的逐月平均气温、降水量、日照时数、瞬时风速资料，采用线性倾向趋势分析、滑动平均法、M-K检验法、累计距平法、滑动t检验法、Morlet小波分析法对气候变化特征进行分析。结果表明：（1）近60 a巴彦淖尔市年平均气温增温趋势，年日照时数、年平均风速减少趋势显著，年降水量变化趋势不显著；（2）空间分布上，年平均气温为北低南高，年降水量为东多西少，年日照时数为西北、东南部相对多，其余地区相对少，年平均风速为南小北大；（3）年平均气温在1996年发生突变，年日照时数在1999、2014年发生突变，年平均风速在1982年发生突变，年降水量未发生突变；（4）主要的周期振荡，年平均气温、年降水量在30、13 a左右，年日照时数在13 a左右，年平均风速在20 a左右和10 a左右；（5）北极涛动指数对春冬季气温、春季降水、秋冬季风速有较为显著的影响，北大西洋涛动指数对春冬季气温、夏冬季风速有较为显著的影响，南方涛动指数对冬季降水有较为显著的影响，太平洋北美指数对冬季气温、春季降水有较为显著的影响。 |
| 关键词: 巴彦淖尔市；气候变化；M-K突变检验；Morlet小波分析；环流指数 |
| DOI： |
| 投稿时间：2022-11-15 |
| 基金项目: |
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| Analysis of Climate Change Characteristics and Impact Factors in Bayannur City in Recent 60 Years |
| TENG Haidi |
| (Bayannur Meteorological Bureau of Inner Mongolia , Bayannur 015000 , China) |
| Abstract: |
| In order to understand the characteristics of climate change in Bayannur City in the past 60 years, based on the monthly average temperature, precipitation, sunshine hours and instantaneous wind speed data of 9 meteorological observation stations in Bayannur City from 1961 to 2020, linear trend analysis, sliding average method, M-K test, cumulative anomaly method, sliding t-test and Morlet wavelet analysis are used to analyze the characteristics of climate change. The results show that: (1) in recent 60 years, the annual average temperature, the annual sunshine hours and the annual average wind speed in Bayannur City have a significant decreasing trend, and the annual precipitation change trend is not significant; (2) in view of the spatial distribution, the average temperature of the previous year was lower in the north and higher in the south, the annual precipitation was more in the east and less in the west, the annual sunshine hours were relatively more in the northwest and southeast, and the other regions were relatively less, the annual average wind speed was smaller in the south and larger in the north; (3) the annual average temperature mutation occurred in 1996, the annual sunshine hours mutation occurred in 1999 and 2014, the annual average wind speed mutation occurred in 1982, and the annual precipitation mutation did not occur; (4) the mainly fluctuate periodically of the annual average temperature and annual precipitation in about 30 and 13 years, the annual sunshine duration is about 13 years, and the annual average wind speed is about 20 and 10 years; (5) AO has a significant impact on spring and winter temperature, spring precipitation and wind speed in autumn and winter, NAO has a significant impact on spring and winter temperature, summer and winter wind speed, SOI has a significant impact on winter precipitation, and PNA has a significant impact on winter temperature and spring precipitation. |
| Key words: Bayannur City； climate change； M-K mutation test； Morlet wavelet analysis； circulation index |
