干旱气象 ›› 2022, Vol. 40 ›› Issue (3): 364-374.DOI: 10.11755/j.issn.1006-7639(2022)-03-0364

• 论文 • 上一篇    下一篇

半干旱区陆面过程观测试验的仪器精度和观测误差分析

杜昊霖1(), 王胜1(), 乔梁2, 孙旭映1   

  1. 1.中国气象局兰州干旱气象研究所,甘肃省干旱气候变化与减灾重点实验室,中国气象局干旱气候变化与减灾重点实验室,甘肃 兰州 730020
    2.复旦大学大气与海洋科学系,上海 200082
  • 收稿日期:2021-02-04 修回日期:2021-05-26 出版日期:2022-06-30 发布日期:2022-06-28
  • 通讯作者: 王胜
  • 作者简介:杜昊霖(1993—),男,硕士,助理研究员,主要从事陆面过程研究. E-mail: kydu2333@163.com
  • 基金资助:
    国家自然科学基金项目(41875022);国家自然科学基金项目(41630426);甘肃省青年科技基金(21JR7RA701);甘肃省创新团队项目(20JR5RA121);中国气象局兰州干旱气象研究所创新团队项目(GHSCXTD-2020-1)

Analysis of instrument accuracy and observation error of land surface process observation experiment in semi-arid area

DU Haolin1(), WANG Sheng1(), QIAO Liang2, SUN Xuying1   

  1. 1. Lanzhou Institute of Arid Meteorology of CMA, Gansu Key Laboratory of Arid Climatic Change and Reducing Disaster, Key Laboratory of Arid Climatic Change and Disaster Reduction of CMA, Lanzhou 730020, China
    2. Department of Atmospheric and Oceanic Sciences, Fudan University, Shanghai 200082, China
  • Received:2021-02-04 Revised:2021-05-26 Online:2022-06-30 Published:2022-06-28
  • Contact: WANG Sheng

摘要:

利用定西试验基地2017年5月的平行对比观测资料,分析陆面过程观测试验的仪器精度和观测误差。结果表明:HMP45D型空气温湿度传感器、107-L型土壤温度传感器、WAA151型风速仪、HFP01型土壤热通量板和涡动系统(CSAT3+Li-7500)观测数据的偏差较小,均在允许范围内,说明相同仪器之间的观测数据基本一致,但观测土壤湿度的CS616型仪器在使用时需要订正;不同型号仪器观测长短波辐射的一致性很高,其相关系数均近乎1;观测数据的偏差也直接影响能量闭合率,试验中湍流通量观测偏差造成地表能量闭合率0.61%~2.20%的不确定性,可利用能量观测偏差造成地表能量闭合率0.08%~1.67%的不确定性。

关键词: 仪器精度, 测量误差, 平行对比试验, 陆-气相互作用

Abstract:

Based on comparative observation data of Dingxi experiment base in May 2017, the instrument accuracy and observation error of the land surface process observation experiment were analyzed. The results show that the error in observation data of HMP45D air temperature and humidity sensor, 107-L soil temperature sensor, WAA151 wind speed instrument, HFP01 soil heat flux plate and eddy system (CSAT3+Li-7500) was small and within the allowable range, which indicated that the data observed by the same instrument were basically consistent. However, CS616 soil moisture observation instrument needs to be corrected. The consistency of long and short wave radiation observed by different types of instruments was very high, and its correlation coefficients were almost 1. The deviation of observation data also directly affects energy closure rate. The observation deviation of turbulent flux caused the uncertainty of surface energy closure rate of 0.61%-2.20% and the observation deviation of available energy caused the uncertainty of surface energy closure rate of 0.08%-1.67%.

Key words: instrument accuracy, measurement error, parallel comparison experiment, land-atmosphere interaction

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