Arid Zone Research ›› 2022, Vol. 39 ›› Issue (1): 84-93.doi: 10.13866/j.azr.2022.01.09

Previous Articles     Next Articles

Detailed analysis of the characteristics of dry-hot wind in southern Xinjiang in 2020

ZHANG Zulian1,2(),MAO Weiyi1,YAO Yanli2(),ZHANG Shanqing2,GU Yawen2   

  1. 1. Institute of Desert Meteorology, CMA, Urumqi 830002, Xinjiang, China
    2. Xinjiang Agriculture Network Information Center, Urumqi 830002, Xinjiang, China
  • Received:2021-04-01 Revised:2021-06-18 Online:2022-01-15 Published:2022-01-24
  • Contact: Yanli YAO E-mail:1724593714@qq.com;183250354@qq.com

Abstract:

The paper using 5 km of CLDAS from May to July 2020 grid hour data and wheat growth data in 2020, the definition of dry-hot wind based on hourly meteorological elements was refined, sort out the hourly dry-hot wind data of each grid, detailed analysis of the characteristics of high temperature and low humidity (light, medium and heavy) and dry wind types dry-hot wind in southern Xinjiang. The results show that: (1) The average cumulative days of four degrees dry-hot wind were 31.0,13.8,10.7, and 3.6 days, and the average cumulative hours were 151.2, 54.6, 41.2, and 11.3 h, the high value areas of dry-hot wind days, hours and comprehensive strength index were located in Ruoqiang, Hami and Turpan regions. (2) The days with average hours of high temperature and low humidity dry-hot wind≥6.5 h were concentrated in late June, early and mid-July, the days with dry wind type dry-hot wind average hours≥4 h were concentrated in May, mid-June and early July, the largest areas of high temperature and low humidity type at 18:00 and dry wind type at 19:00 every day. (3) Analysis of dry-hot wind process distribution, the average cumulative times of four degrees dry-hot wind were 12.7, 7.9, 5.7, and 2.5 times, the average longest duration days were 8.4, 3.5, 2.7, and 1.2 days. The dry-hot wind have large areas, many times, long duration days and strong process. Therefore, enough attention should be paid to the defense of dry-hot wind.

Key words: wheat, dry-hot wind, detailed characteristics, southern Xinjiang