REN Xiuzhen,XU Guanglai,LIU Yongting,et al.Characteristics of Spatiotemporal Variation of Climate in Anhui Province in Recent 56 Years[J].Research of Soil and Water Conservation,2018,25(05):287-294.
安徽省近56年气候要素时空演变特征
- Title:
- Characteristics of Spatiotemporal Variation of Climate in Anhui Province in Recent 56 Years
- Keywords:
- climate change; ENSO; temporal and spatial variation; Anhui Province
- 分类号:
- P467
- 摘要:
- 基于安徽省17个气象站及周边9个气象站逐日平均气温和降水量数据，利用气候倾向率、Mann-Kendall检验、滑动T检验、交叉小波等方法分析了1960-2015年安徽省气候要素时空演变特征，并探讨其与ENSO之间的关系。结果表明：（1）年平均气温上升明显，春季变化幅度最大为0.3℃/10 a，上升幅度最大月份分别为2月、4月、5月、10月份；年平均降水量略有增加，冬季和8月份降水增加达到显著性水平，其他季节、月份和年降水变化未达到显著性水平。（2）中部江南丘陵区气温高于淮北平原区和江南地区；江南地区为降水高值区，降水量随纬度增加而减少，冬季和夏季各地区变化趋势明显。（3）1994年年平均气温突变，突变后显著升高0.8℃；除夏季外其余季节均发生突变，春季平均气温变化最明显，突变后显著升高1.1℃；降水量在春秋两季发生突变，夏冬两季均无突变。（4）气温、降水量与ENSO有3~5 a的显著周期，主要集中于20世纪60，80，90年代，年降水量周期比年均温周期在时间上相对滞后。
- Abstract:
- Based on historical data (1960-2015) on daily temperature and precipitation obtained from 17 meteorological stations in Anhui Province and 9 meteorological stations around Anhui Province, we made a comprehensive investigation of the change characteristics of the climate using climate tendency method, Mann-Kendall test method, moving t-test and cross wavelet method, and the relationship between the ENSO and climate factors was discussed. The results showed that, firstly, annual average temperature rose obviously, maximum variation was 0.3℃/10 a in spring; precipitation increased slightly, but the seasonal variation was larger, especially in summer and winter; in spring, summer, autumn and winter, the rise of the annual temperature was significant, the large rise of monthly temperature occurred in May, June, October and February, respectively, while the precipitation change occurred in April, August, September and January, respectively; secondly, the temperature in the central region was higher than that in the south and the north, and the low temperature zone was found in the Huangshan area; the temperature changes in all areas in spring were significant, and the summer changes were not obvious; the precipitation decreased with the increase of latitude, and the Huangshan Mountain area was the region with the high precipitation; and the trend of winter and summer was obvious in different regions; thirdly, abrupt change of average annual temperature occurred in 1994, significant rise in temperature was 0.8℃ after abrupt change; the abrupt changes occurred in the three seasons except the summer, the average spring temperature change was most obvious and significantly increased by 1.1℃ after abrupt change. The abrupt change of precipitation occurred in the spring and autumn period, no abrupt changes were found in the summer and winter; finally, the temperature, precipitation and ENSO cycle had a significant cycle of 3~5 years, mainly concentrated in the 1960s, 1980s and 1990s, and the annual precipitation cycle relatively lagged compared with the average annual temperature cycle.
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备注/Memo
收稿日期:2017-10-23;改回日期:2017-11-20。
基金项目:国家自然科学基金青年项目（41301029，41301011）
作者简介:任秀真(1990-),女,安徽临泉人,硕士研究生,主要从事水文学与水资源研究。E-mail:1179964774@qq.com
通讯作者:徐光来(1978-),男,安徽无为人,博士,副教授,主要从事水文学与水资源研究。E-mail:guanglaixu@163.com