干旱区研究

Arid Zone Research >

2019 , Vol. 36 >Issue 2: 403 - 411

DOI: https://doi.org/10.13866/j.azr.2019.02.16

Water and Climate

Spatiotemporal Variation of Dry-Hot Wind Events in the Hexi Region in Recent 50 Years

  • HOU Qi ,
  • ZHANG Bo ,
  • HE Hang ,
  • MA Bin ,
  • MA Shang-qian
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  • College of Geography and Environmental Science, Northwest Normal University, Lanzhou 730070, Gansu,China

Received date: 2018-06-14

  Revised date: 2018-10-10

  Online published: 2025-10-18

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Abstract

In this study, the spatiotemporal distribution and evolution of dry-hot wind events were analyzed. The purpose of the study was to explore the trends and impacts of dry-hot wind events in the Hexi region under the background of global change based on the national meteorological industry standards for spring wheat and the daily maximum temperature and relative humidity data from 13 meteorological stations in the Hexi region at 14:00 in June and July from 1960 to 2017. The results showed that: ① Dry-hot wind events were mainly in an increase trend except in the areas with high altitude, and their increase rates were significantly different. After 2000, the intensity of dry-hot wind increased rapidly, especially the heavy dry-hot wind. There was no obvious change in the areas with high occurring frequency in different decades, but the days of occurring dry-hot wind changed significantly; ② Dry-hot wind frequency was higher in the west and north than that in the east and south, and it was also high in the areas with low elevation; ③ The extent of occurring a dry-hot wind event was enlarged, its duration was prolonged, and dry-hot wind tended to the regions with higher latitudes and higher altitudes.

Key words： dry-hot wind; spatiotemporal variation; climate change; annul type grade; Hexi Region

Cite this article

HOU Qi , ZHANG Bo , HE Hang , MA Bin , MA Shang-qian . Spatiotemporal Variation of Dry-Hot Wind Events in the Hexi Region in Recent 50 Years[J]. Arid Zone Research, 2019 , 36(2) : 403 -411 . DOI: 10.13866/j.azr.2019.02.16

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