| ENERGETIC DIAGNOSIS FOR TWO KINDS OF LOW LEVEL JETS |
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| 作者姓名： | 汪钟兴 矫梅燕 |
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| 作者单位： | Department of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026;Advanced Center for Earth Sciences and Astronomy, University of Science and technology of China, Third World Academy of Science, Hefe, 230026;Anhui Meteorological Institute, Hefei, 230026 |
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| 摘 要： | On the basis of the budget equations for KR and KD, this paper presents the horizontal pattern of budget terms for two kinds of low level jets (LLJ) with and without heavy rain. The results show that the mechanisms for generating and maintaining LLJ are different, and especially, the direction of energy conversion is opposite. A positive conversion from KD to KR appears to be a necessary but not sufficient condition in the lower troposphere near the heavy rain area. The intensity and direction of energy conversion depends not only on the relative position of vorticity and divergence field, but also on the vertical profile of the jets directly.
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| 关 键 词： | low-level jet heavy rain energetic diagnosis |
| 收稿时间： | 6/6/1994 12:00:00 AM |
| 修稿时间： | 1994/11/28 0:00:00 |
ENERGETIC DIAGNOSIS FOR TWO KINDS OF LOW LEVEL JETS |
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| Wang Zhongxing and Jiao Meiyan.ENERGETIC DIAGNOSIS FOR TWO KINDS OF LOW LEVEL JETS[J].Journal of Tropical Meteorology,1996,2(2):189-193. |
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| Authors: | Wang Zhongxing and Jiao Meiyan |
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| Institution: | Department of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026;Advanced Center for Earth Sciences and Astronomy, University of Science and technology of China, Third World Academy of Science, Hefe, 230026;Anhui Meteorological Institute, Hefei, 230026 |
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| Abstract: | On the basis of the budget equations for KR and KD, this paper presents the horizontal pattern of budget terms for two kinds of low level jets (LLJ) with and without heavy rain. The results show that the mechanisms for generating and maintaining LLJ are different, and especially, the direction of energy conversion is opposite. A positive conversion from KD to KR appears to be a necessary but not sufficient condition in the lower troposphere near the heavy rain area. The intensity and direction of energy conversion depends not only on the relative position of vorticity and divergence field, but also on the vertical profile of the jets directly. |
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| Keywords: | low-level jet heavy rain energetic diagnosis |
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