Advances in Earth Science ›› 2018, Vol. 33 ›› Issue (3): 281-293. doi: 10.11867/j.issn.1001-8166.2018.03.0281

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Temporal Change Characteristics of Climatic and Its Relationships with Atmospheric Circulation Patterns in Qinghai Lake Basin

Zhiyong Ding( ), Ruijie Lu *( ), Chang Liu, Chenxi Duan   

  1. 1.State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, Beijing 100875, China;2.Engineering Center of Desertification and Blown-Sand Control of Ministry of Education, Faculty of Geographical Science,Beijing Normal University, Beijing 100875, China
  • Received:2017-11-09 Revised:2018-02-17 Online:2018-03-20 Published:2018-05-02
  • Contact: Ruijie Lu;
  • About author:

    First author:Ding Zhiyong(1990-),male, Fuzhou City,Jiangxi Province, Ph.D student. Research areas include climate change and environmental

  • Supported by:
    Project supported by the National Natural Science Foundation of China “Late Quaternary lake level variations and aeolian geomorphic process in Qinghai Lake area” (No.41571184).

Zhiyong Ding, Ruijie Lu, Chang Liu, Chenxi Duan. Temporal Change Characteristics of Climatic and Its Relationships with Atmospheric Circulation Patterns in Qinghai Lake Basin[J]. Advances in Earth Science, 2018, 33(3): 281-293.

Based on monthly meteorological data from 11 stations(1959-2015)in Qinghai Basin(QHB) and its surrounding area, we analyzed monthly average temperature(Tmean), average maximum(TXam), minimum temperature(TNam) and precipitation variation characteristics as well as the influence of atmospheric oscillation on these parameters using Mann-Kendall trend analysis, mutation analysis, continuous Morlet wavelet transform, Pearson correlation analysis and R/S analysis method. In addition, the future trend of climate change in the regional scale was also discussed. We found that the temperature and precipitation increment were obvious in the region, especially the Tmean in autumn, winter, TXam and TNam in summer and winter precipitation showing significant increase. Temperature and precipitation experienced abrupt changes around 1986 and 2002, respectively. The period of oscillation of each temperature indices was similar featuring 2~3 years,8~10 years short- cycle and 30~32 years middle- cycle, while that for the precipitation featured 3~4 years,6~7 years short- cycle and 30~32 years middle- cycle. The East Asian Summer Monsoon Index(EASMI) anomaly is an important factor for the anomaly of autumn temperature and summer precipitation in QHB, while the Indian Summer Monsoon Index(ISMI) mainly affects the spring temperature and precipitation in the research area. The effects of Arctic Oscillation Index (AO) were relatively strong on temperature variation, especially in autumn and winter, and AO had significant effect on the precipitation in spring, summer and winter, too. The North Atlantic Oscillation Index (NAO) and ENSO have weak influence on the study area, NAO mainly affects summer and winter precipitation, while ENSO mainly affects autumn precipitation. The Hurst index of Tmean and annual precipitation in QHB are higher than 0.5, indicating that the temperature and precipitation in the study area will continue to be the positive trend in the future period.

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