Temporal and Spatial Characteristics and Possible Causes Research of Qinghai-Tibetan Plateau Warming from 1980 to 2016

  • Ying WEI ,
  • Keqin DUAN
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  • School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, Shaanxi, China

Received date: 2019-07-11

  Online published: 2020-06-28

Abstract

In order to fully detect the temporal and spatial temperature changes on the Qinghai-Tibetan Plateau (QTP) during 1980-2016, The monthly mean surface air temperature at 2 m from the JRA-55 (TJ), ERA-Interim (TE) and MERRA (TM) were respectively compared with those observed value at meteorological stations in the QTP.All the data sets reveal QTP has experienced significant warming, with the annual warming trends of 0.52 (TO), 0.37 (TJ), 0.29 (TE) and 0.26 (TM) ℃·(10a)-1, respectively.By comparison the annual and seasonal variations and trends of three reanalysis data with TO, it is found that the applicability of TJ is better than TE and TM in the eastern QTP.Then, TJ can be used to make up for the lack of observation in the western QTP.Generally, TJ shows there is a “dual-center” warming zone in the whole QTP, and the warming center in winter moves southward contrast to in summer.The maximum warming rate [0.9 ℃·(10a)-1]in winter was larger than that[0.8 ℃·(10a)-1] in summer.In addition, the summer warming trend in northern QTP is much higher than that in southern QTP, which is maybe related to latent heat caused by the precipitation change.While the highest warming rate in winter occurs on the central western QTP, which is may caused by the increase of net radiation budget due to the snow-albedo feedback.

Cite this article

Ying WEI , Keqin DUAN . Temporal and Spatial Characteristics and Possible Causes Research of Qinghai-Tibetan Plateau Warming from 1980 to 2016[J]. Plateau Meteorology, 2020 , 39(3) : 459 -466 . DOI: 10.7522/j.issn.1000-0534.2019.00121.

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