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Volume 21 Issue 4

Jul.  2004

Article Contents
Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2004 >  21(4): 609-616

Kinematic Structure of a Heavy Rain Event from Dual-Doppler Radar Observations

  • 1.

    Department of Atmospheric Sciences, Lanzhou University, Lanzhou 730000,Department of Atmospheric Sciences, Lanzhou University, Lanzhou 730000,Chinese Academy of Meteorological Sciences, Beijing 100081


doi: 10.1007/BF02915728

  • The detailed kinematic structure of a heavy rain event that occurred in the middle reaches of the Yangtze River was investigated using dual-Doppler radar observation. A variational analysis method was developed to obtain the three-dimensional wind fields. Before the analysis, a data preprocessing procedure was carried out, in which the temporal variation with the scanning time interval and the effect of the earth curvature on the data position were taken into account. The analysis shows that a shear line in the lower and middle levels played an important role in the rainfall event. The precipitation fell mainly on the south end of the shear line where southerly flow prevailed and convergence and updraft were obvious. With the movement and decay of the shear line, the precipitation moved and decayed correspondingly.
  • [1] Xu Liren, Zhao Ming, 2000: The Influences of Boundary Layer Parameterization Schemes on Mesoscale Heavy Rain System, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 458-472.  doi: 10.1007/s00376-000-0036-3
    [2] Keon Tae SOHN, Jeong Hyeong LEE, Soon Hwan LEE, Chan Su RYU, 2005: Statistical Prediction of Heavy Rain in South Korea, ADVANCES IN ATMOSPHERIC SCIENCES, 22, 703-710.  doi: 10.1007/BF02918713
    [3] YU Zifeng, LIANG Xudong, YU Hui, Johnny C. L. CHAN, 2010: Mesoscale Vortex Generation and Merging Process: A Case Study Associated with a Post-Landfall Tropical Depression, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 356-370.  doi: 10.1007/s00376-009-8091-x
    [4] SUN Li, SHEN Baizhu, SUI Bo, 2010: A Study on Water Vapor Transport and Budget of Heavy Rain in Northeast China, ADVANCES IN ATMOSPHERIC SCIENCES, 27, 1399-1414.  doi: 10.1007/s00376-010-9087-2
    [5] XIONG Zhe, WANG Shuyu, ZENG Zhaomei, FU Congbin, 2003: Analysis of Simulated Heavy Rain over the Yangtze River Valley During 11-30 June 1998 Using RIEMS, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 815-824.  doi: 10.1007/BF02915407
    [6] Shou Shaowen, Liu Yaohui, 1999: Study on Moist Potential Vorticity and Symmetric Instability during a Heavy Rain Event Occurred in the Jiang-Huai Valleys, ADVANCES IN ATMOSPHERIC SCIENCES, 16, 314-321.  doi: 10.1007/BF02973091
    [7] Huiyan XU, Xiaofan LI, Jinfang YIN, Dengrong ZHANG, 2023: Predecessor Rain Events in the Yangtze River Delta Region Associated with South China Sea and Northwest Pacific Ocean (SCS-WNPO) Tropical Cyclones, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 1021-1042.  doi: 10.1007/s00376-022-2069-3
    [8] Minwei Qian, N. Loglisci, C. Cassardo, A. Longhetto, C. Giraud, 2001: Energy and Water Balance at Soil-Air Interface in a Sahelian Region, ADVANCES IN ATMOSPHERIC SCIENCES, 18, 897-909.
    [9] Baofeng JIAO, Lingkun RAN, Na LI, Ren CAI, Tao QU, Yushu ZHOU, 2023: Comparative Analysis of the Generalized Omega Equation and Generalized Vertical Motion Equation, ADVANCES IN ATMOSPHERIC SCIENCES, 40, 856-873.  doi: 10.1007/s00376-022-1435-5
    [10] Chenbin XUE, Zhiying DING, Xinyong SHEN, Xian CHEN, 2022: Three-Dimensional Wind Field Retrieved from Dual-Doppler Radar Based on a Variational Method: Refinement of Vertical Velocity Estimates, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 145-160.  doi: 10.1007/s00376-021-1035-9
    [11] JING Li, LU Hancheng, WANG Hanjie, ZHU Min, KOU Zheng, 2004: A Mesoscale Analysis of Heavy Rain Caused by Frontal and Topographical Heterogeneities on Taiwan Island, ADVANCES IN ATMOSPHERIC SCIENCES, 21, 909-922.  doi: 10.1007/BF02663597
    [12] Xu Hui, Zhang Weiping, Lang Xuxing, Guo Xia, Ge Wenzhong, Dang Renqing, TakaoTakeda, 2000: The Use of Dual-Doppler Radar Data in the Study of 1998 Meiyu Frontal Precipitation in Huaihe River Basin, ADVANCES IN ATMOSPHERIC SCIENCES, 17, 403-412.  doi: 10.1007/s00376-000-0032-7
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    [14] ZHANG Lin, NI Yunqi, 2005: Four-Dimensional Variational Data Assimilation Experiments for a Heavy Rain Case During the 2002 IOP in China, ADVANCES IN ATMOSPHERIC SCIENCES, 22, 300-312.  doi: 10.1007/BF02918519
    [15] YUE Caijun, SHOU Shaowen, LIN Kaiping, YAO Xiuping, 2003: Diagnosis of the Heavy Rain near a Meiyu Front Using the Wet Q Vector Partitioning Method, ADVANCES IN ATMOSPHERIC SCIENCES, 20, 37-44.  doi: 10.1007/BF03342048
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    • Manuscript History

    Manuscript received: 10 July 2004
    Manuscript revised: 10 July 2004
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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    Kinematic Structure of a Heavy Rain Event from Dual-Doppler Radar Observations

    • 1. Department of Atmospheric Sciences, Lanzhou University, Lanzhou 730000,Department of Atmospheric Sciences, Lanzhou University, Lanzhou 730000,Chinese Academy of Meteorological Sciences, Beijing 100081
    • Manuscript received: 2004-07-10
    • Manuscript revised: 2004-07-10

    Abstract: The detailed kinematic structure of a heavy rain event that occurred in the middle reaches of the Yangtze River was investigated using dual-Doppler radar observation. A variational analysis method was developed to obtain the three-dimensional wind fields. Before the analysis, a data preprocessing procedure was carried out, in which the temporal variation with the scanning time interval and the effect of the earth curvature on the data position were taken into account. The analysis shows that a shear line in the lower and middle levels played an important role in the rainfall event. The precipitation fell mainly on the south end of the shear line where southerly flow prevailed and convergence and updraft were obvious. With the movement and decay of the shear line, the precipitation moved and decayed correspondingly.

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