Advances in Earth Science ›› 2021, Vol. 36 ›› Issue (8): 785-796. doi: 10.11867/j.issn.1001-8166.2021.044

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Some New Changes of the Regional Climate on the Tibetan Plateau Since 2000

Hui WANG 1( ),Lu ZHANG 1, 2,Xingdong SHI 1, 3,Dongliang LI 1   

  1. 1.Key Laboratory of Meteorological Disaster,Ministry of Education,Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,School of Atmospheric Sciences,Nanjing University of Information Science & Technology,Nanjing 210044,China
    2.Climate Center of Qinghai Province,Xining 810001,China
    3.College of Atmospheric Sciences,Lanzhou University,Lanzhou 730000,China
  • Received:2021-01-31 Revised:2021-04-28 Online:2021-08-10 Published:2021-09-22
  • About author:WANG Hui (1982-), female, Cao County, Shandong Province, Associate professor. Research areas include climate dynamics and land-air interactions. E-mail: wanghui123@nuist.edu.cn
  • Supported by:
    the Second Tibetan Plateau Scientific Expedition and Research (STEP) Program "Earth-atmosphere interaction and its climatic effects" task 1 "Westerly-monsoon synergy and its effects"(2019QZKK0103);The National Natural Science Foundation of China "Study on dynamic mechanism of grassland ecosystem response to climate change in Qinghai Plateau "(U20A2098)

Hui WANG,Lu ZHANG,Xingdong SHI,Dongliang LI. Some New Changes of the Regional Climate on the Tibetan Plateau Since 2000[J]. Advances in Earth Science, 2021, 36(8): 785-796.

In the process of global warming, a series of changes have also occurred in the climate of Tibetan Plateau. On the basis of summarizing the previous research results, some new climatic changes and their possible causes in the Tibetan Plateau after 2000 were discussed from the aspects of air temperature, 0 cm ground temperature, surface wind speed and surface sensible heat flux.

Results

showed that: on the basis of the significant warming of air temperature and 0 cm ground temperature on the Tibetan Plateau during 2000-2010, their warming slowed down after 2010. The wind speed on the Tibetan Plateau had a significant trend change around 2000, which gradually changed from a significant decreasing trend before 2000 to a significant increasing trend after 2010. The changes of wind speed and air-ground temperature difference after 2000 jointly led to the enhancement and trend transition of the sensible heat flux on the Plateau, among which, the increase rate of ground temperature during 2000-2010 was faster than that of air temperature, which contributed significantly to the increase of air-ground temperature difference and the enhancement of surface sensible heat flux. The rapid increase of surface wind speed after 2010 was the main cause for the enhancement of surface sensible heat flux on the Tibetan Plateau. The variation of wind speed over the Tibetan Plateau may be mainly related to the adjustment of large-scale circulation, while the variation of ground temperature may be mainly the results of the interaction of local underlying surface elements over the Tibetan Plateau.

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