| Cite this article: | 高建东.1970-2019年山东陵城降水和气温变化分析[J].灌溉排水学报,,():-. |
| GAO Jian-dong.1970-2019年山东陵城降水和气温变化分析[J].灌溉排水学报,,():-. |
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| Analysis on the Variation of Precipitation and Air Temperature in Lingcheng District, Shandong Province from 1970 to 2019 |
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GAO Jian-dong
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Water Conservancy Bureau of Lingcheng district,Shandong Dezhou
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| Abstract: |
| 【Objective】In order to understand the variation characteristics of precipitation and air temperature in Lingcheng District under the background of climate change as well as make efficient use of precipitation resources, 【Method】the monthly precipitation and air temperature data from 1970 to 2019 in Lingcheng District were analyzed by means of anomaly analysis and linear tendency estimation. 【Result】The results show that the average precipitation in this area in the past 50 years is 554.7mm, the interannual precipitation shows an overall downward trend, and the interannual variation of precipitation is large, with a coefficient of variation of 30.4%. The annual precipitation is mainly concentrated in summer, and the frequency of drought in spring, autumn and winter is high, and the summer precipitation accounts for 68.4% of the total precipitation in the whole year. In the past 50 years, the temperature showed an upward trend year by year, and the average temperature in recent 10 years was 0.92 ℃ higher than that in 1970-1979. The highest temperature was in July and the lowest was in January. Compared with 1970-1999, the average temperature in spring and March increased the most in recent 20 years, which were 1.06 ℃ and 1.99 ℃, respectively. 【Conclusion】The research results have important reference value for the formulation of optimal allocation scheme of water resources in this area. |
| Key words: Precipitation; air temperature; climate change; interannual variation; variable coefficient |
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