Journal of Arid Meteorology ›› 2022, Vol. 40 ›› Issue (1): 95-107.DOI: 10.11755/j.issn.1006-7639(2022)-01-0095

• Articles • Previous Articles     Next Articles

Deviation analysis of reanalysis data in boundary layer in summer over Tibetan Plateau and its simulation correction

MA Minjin1,2(), CHEN Yue2, KANG Guoqiang2, ZHAO Zhenzhu2, HUANG Wanlong2, TAN Changrong2, DING Fan3   

  1. 1. Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province, Lanzhou 730020, China
    2. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China
    3. College of Computer and Communication, Lanzhou University of Technology, Lanzhou 730050, China
  • Received:2021-04-07 Revised:2021-09-24 Online:2022-02-28 Published:2022-02-28


马敏劲1,2(), 陈玥2, 康国强2, 赵侦竹2, 黄万龙2, 谈昌蓉2, 丁凡3   

  1. 1.甘肃省干旱气候变化与减灾重点实验室,甘肃 兰州 730020
    2.兰州大学大气科学学院,甘肃 兰州 730000
    3.兰州理工大学计算机与通信学院,甘肃 兰州 730050
  • 作者简介:马敏劲(1983— ),男,博士,云南昭通人,副教授,主要研究方向为大气边界层和空气污染的数值模拟. E-mail:
  • 基金资助:


The thermal and dynamic processes of the convective boundary layer over the Tibetan Plateau (TP) have an important impact on weather and climate of the downstream region and even the entire East Asia region. This paper uses a summer case of 2017 as an example to analyze the applicability of three sets of reanalysis data including ERA-Interim, JRA-55 and MERRA-2 in the study of the boundary layer over the TP, and further uses the constraints of the numerical model physical framework to correct its analysis error. In the summer of 2017, the variation of air temperature and dew point temperature were presented well through the three sets of reanalysis data in the boundary layer over the southeastern TP, while the reproducibility of the horizontal wind field was very poor, and the reanalysis data with better applicability over the TP during the study period was ERA-Interim. The results from the 12 parameterization scheme combinations selected in this paper were compared by the dispersion degree of the horizontal wind field error, improvements of the simulations in clear skies and moderate rain were significant. Therefore, for the simulated critical physical quantity (the horizontal wind field), the combination of Betts-Miller-Janjic, WSM6 and ACM2 scheme was the most locally applicable in the study area. The wind field in the reanalysis data could describe the summer boundary layer development over the TP more closely after adjustment using simulation results. It was proved that the model parameterization scheme could reduce its deviation of seasonal distribution in the plateau area, which had certain guiding significance for subsequent research and application.

Key words: the Tibet Plateau, boundary layer, reanalysis data, numerical simulation



关键词: 青藏高原, 边界层, 再分析资料, 数值模拟

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