| THE ANALYSIS OF THE RELATIONSHIP BETWEEN PULSE OF LLJ AND HEAVY RAIN USING WIND PROFILER DATA |
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| 作者姓名： | 刘淑媛 郑永光 陶祖钰 |
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| 作者单位： | Air Force Meteorology Center，Beijing 100843 China，National Laboratory for Severe Storm Research，Department of Atmosphere Science，Peking University，Beijing 100871 China，National Laboratory for Severe Storm Research，Department of Atmosphere Science，Peking University，Beijing 100871 China，National Laboratory for Severe Storm Research，Department of Atmosphere Science，Peking University，Beijing 100871 China |
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| 基金项目： | A key project in Natural Science Foundation of China (980456032)，Project 973 (G1998040907)，Foundation Project for Visiting Scholar in Key Laboratory of Higher Education College |
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| 摘 要： | 1 INTRODUCTION With the principle of Doppler effect, the wind-profiler acquires high-resolution vertical wind profiles every few minutes and every few dozens of meters1, 2]. In contrast, data obtained with conventional soundings do not reflect the true conditions right over the sounding site, for the balloons are going with the wind in upper levels. The National Oceanic and Atmospheric Administration, U.S.A., made a final assessment of the wind-profiler networks deployed in central …
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| 关 键 词： | 季候风 中尺度 强降雨 模拟 |
THE ANALYSIS OF THE RELATIONSHIP BETWEEN PULSE OF LLJ AND HEAVY RAIN USING WIND PROFILER DATA |
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| LIU Shu-yuan,ZHENG Yong-guang and TAO Zu-yu.THE ANALYSIS OF THE RELATIONSHIP BETWEEN PULSE OF LLJ AND HEAVY RAIN USING WIND PROFILER DATA[J].Journal of Tropical Meteorology,2003,9(2):158-163. |
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| Authors: | LIU Shu-yuan ZHENG Yong-guang and TAO Zu-yu |
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| Affiliation: | 1. Air Force Meteorology Center, Beijing 100843 China;National Laboratory for Severe Storm Research, Department of Atmosphere Science, Peking University, Beijing 100871 China
2. National Laboratory for Severe Storm Research, Department of Atmosphere Science, Peking University, Beijing 100871 China |
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| Abstract: | Detailed analysis and comparisons are made on the data of Hong Kong wind-profiler and the weather/precipitation every hour during the HUAMEX and the experiment for the monsoon of the South China Sea (SCSMEX) in 1998. It is found that the wind-profiler data could reveal the meso-scale phenomena in the PBL of Southwest Monsoon, which was closely related to rainstorms. The center of the low-level jet under the altitude of 2 km, which corresponded to the appearance of heavy rain, appeared 1 to 2 hours after the center of low-level jet (LLJ) did above the 2-km altitude. An index I is designed to represent the intensity and height of the LLJ. This index can express clearly the close relationship between the precipitation and the LLJ. The results show that the wind-profiler is somewhat predictive to a rainstorm. |
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| Keywords: | wind profiler heavy rain low-level jet |
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