主办单位:中国气象局沈阳大气环境研究所
国际刊号:ISSN 1673-503X
国内刊号:CN 21-1531/P

Journal of Meteorology and Environment ›› 2021, Vol. 37 ›› Issue (6): 93-99.doi: 10.3969/j.issn.1673-503X.2021.06.012

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Applicability analysis of linear calculation for missing data of wind tower on typical terrain in Liaoning province

Zheng-qiang GU1(),Qiang GONG1,*(),Li-du SHEN1,Hong XU1,Dong-lei MA2,Ling ZHU1,Hua CHAO1,Dong-lei FENG3   

  1. 1. Regional Climate Center of Shenyang, Shenyang 110166, China
    2. Liaoning Provincial Meteorological Service Center, Shenyang 110166, China
    3. Shenyang Central Meteorological Observatory, Shenyang 110166, China
  • Received:2020-09-07 Online:2021-12-30 Published:2021-12-09
  • Contact: Qiang GONG E-mail:393558873@qq.com;isgq@sina.com

Abstract:

Using the hourly measured wind speed data from 26 wind towers and 6 weather stations at the same period in Liaoning province, the linear fitting at different time scales (month, season, and year), together with wind sheer index, were used to develop 7 schemes to reconstruct the missing wind speed data of the wind towers, and the error test of each proposed reconstruction scheme was conducted.Results show that the linear fitting on monthly data, with corresponding wind sheer indexes (schemes 3 and 7), is the optimal scheme for the data reconstruction of wind towers on typical terrain in Liaoning province.And the spatial distribution of the above two schemes has regional characteristics.Among them, scheme 7 works for the towers on plains and hills in northern Liaoning province and also for towers on coastal plains and hills in southeastern Liaoning province.Scheme 3 is chosen for those on hills and mountains in western Liaoning province, schemes 1 and 4 are only applicable to the towers on the remaining areas.The seasonal wind speed variation and inherent topographical characteristics in temperate continental monsoon climate zone and their influence on wind shear index are the main causes of the spatial distribution characteristics of the optimal scheme for the reconstruction of missing data of wind towers on typical terrain in Liaoning province.

Key words: Data reconstruction, Linear fitting, Wind shear index, Optimal scheme

CLC Number: