干旱区研究

Arid Zone Research >

2021 , Vol. 38 >Issue 5: 1244 - 1253

DOI: https://doi.org/10.13866/j.azr.2021.05.06

Weather and Climate

Temporal and spatial characteristics of 0 cm surface temperature in Shaanxi Province during 1958 to 2017 under climate change

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  • 1. School of Tourism and Environment Resources, Ankang University, Ankang 725000, Shaanxi, China
    2. Engineering Technology Research Center for Water Resource Protection and Utilization of Hanjiang River, Ankang 725000, Shaanxi, China
    3. Academician and Expert Workstation of Shaanxi, Ankang 725000, Shaanxi, China

Received date: 2021-02-25

  Revised date: 2021-04-12

  Online published: 2021-09-24

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Abstract

We analyzed the temporal and spatial variation characteristics of 0 cm surface temperature in Shaanxi Province during 1958 to 2017 based on monthly surface and air temperature data from 18 meteorological observation stations, by using linear fitting, Mann-Kendall nonparametric tests and spatial interpolation. The results indicated that annual and seasonal 0 cm surface temperature had a significant upward trend (P<0.01) except summer during 1958 to 2017 in Shaanxi Province. The climate tendency showed a trend as winter [0.42 ℃·(10a)-1]>spring [0.38 ℃·(10a)-1]>annual [0.27 ℃·(10a)-1]>autumn [0.23 ℃·(10a)-1]>summer [0.07 ℃·(10a)-1]. We observed that the abrupt changes in annual and seasonal surface temperatures were concentrated at the end of 1990s. After the mutation, the largest warming range was in spring, followed by winter, annual, summer, and autumn. Moreover, we found that the annual and seasonal surface temperatures showed a spatial distribution of “high in the South and low in the north”. The annual, spring, and winter surface temperatures of all meteorological stations showed a significant upward trend (P<0.05), while 33% of stations in summer and 83% in autumn had the same characteristics. Additionally, annual and seasonal surface-air temperature difference showed an upward trend except summer during 1958 to 2017 in Shaanxi Province. The climate tendency showed a trend as winter [0.17 ℃·(10a)-1]>spring [0.1 ℃·(10a)-1]>annual [0.07 ℃·(10a)-1, P<0.01]>autumn [0.02 ℃·(10a)-1, P<0.01]>summer [-0.01 ℃·(10a)-1]. Finally, there is a significant positive correlation between the annual average temperature, four seasons temperature and 0 cm surface temperature in Shaanxi Province in recent 60 years, which is characterized by autumn>spring>annual>summer>winter.

Key words： 0 cm surface temperature; temporal and spatial change; abrupt change; surface-air temperature difference; Shaanxi Province

Cite this article

XIAO Weiwei,AN Bin,SHI Jiaqi . Temporal and spatial characteristics of 0 cm surface temperature in Shaanxi Province during 1958 to 2017 under climate change[J]. Arid Zone Research, 2021 , 38(5) : 1244 -1253 . DOI: 10.13866/j.azr.2021.05.06

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