ZHANG Lu-ying,MAO Wen-shu,PANG Bo.Characteristics of Climate Change in Chengdu Plain[J].Journal of Chengdu University of Information Technology,2020,35(02):179-187.[doi:10.16836/j.cnki.jcuit.2020.02.009]
成都平原气候变化特征
- Title:
- Characteristics of Climate Change in Chengdu Plain
- 文章编号:
- 2096-1618(2020)02-0179-09
- Keywords:
- atmospheric sciences; climate change; precipitation; temperature; Chengdu plain
- 分类号:
- P461+.3
- 文献标志码:
- A
- 摘要:
- 为了能更充分地了解成都平原气候变化特征,实现环境、经济和社会可持续发展,利用小波分析、M-K检验等方法对成都平原12个观测站点1961-2016年共56年的日最高温度、最低温度、降水、平均温度进行了特征分析。研究结果表明:成都平原近56年平均温度时间变化趋势是在波动中先降温而后上升并仍处于上升的趋势,平均温度升高中受最高温度升高的影响大; 空间上有向东及东南气温略高的趋势。成都平原的年际降水主要呈现下降趋势,年际间相对波动比较大。成都平原的年降水主要受夏季降水的影响,随着夏季降水的逐渐减少,春秋两季的降水量占年降水量的比重增大,未来年降水量可能是较为平缓的趋势。年平均温度及年平均降水存在不同显著的年代际和年际周期变化。
- Abstract:
- In order to more fully understand the chengdu plain characteristics of climate changes, realize environment, economy and society sustainable development. The wavelet analysis, M-K test and other methods are used to analyze the characteristics of a total of 56 years daily maximum temperature, minimum temperature, precipitation and average temperature of 12 observation stations in Chengdu plain from 1961 to 2016.The results show that the time variation trend of the average temperature in Chengdu plain over the past 56 years is that the temperature firstly decreased and then rised, which is still on the rise in the fluctuation.The highest temperature's rise largely influences the average temperature's rise.In space, the temperature tends to be slightly higher to the east and southeast. The interannual precipitation in Chengdu plain shows a decreasing trend, and the interannual fluctuation is relatively large. The annual precipitation of Chengdu plain is mainly affected by the summer precipitation. With the gradual decrease of summer precipitation, the proportion of precipitation in spring and autumn increases, and the trend of annual precipitation in the future may be relatively flat. The annual mean temperature and the annual mean precipitation have different significant decadal and interannual periodic changes.
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备注/Memo
收稿日期:2019-03-28 基金项目:国家自然科学基金资助项目(41775079)