| 一次东北冷涡发展过程中的能量学研究 |
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| 引用本文： | 孙力.一次东北冷涡发展过程中的能量学研究[J].Acta Meteorologica Sinica,1998,56(3):349-361. |
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| 作者姓名： | 孙力 |
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| 作者单位： | 吉林省气象科学研究所 |
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| 摘 要： | 对一次典型的东北冷涡过程做了能量学分析。结果表明，东北冷涡活动具有鲜明的阶段性能量学特征。东北冷涡发展之前，各种能量之间的转换很小，边界通量也处于正负相间的振荡状态。早期发展阶段，扰动动能边界通量作用是至关重要的。随着非绝热加热制造扰动有效位能和扰动有效位能向扰动动能转换的大幅度增长，以及外界扰动动能的大量输送和纬向平均动能向扰动动能转换的明显加强，导致了东北冷涡的强烈发展，即这一时期区域内部的能量过程也同样十分重要。东北冷涡的减弱是从有大量扰动动能转换成纬向平均动能开始的，随后加上扰动有效位能向扰动动能转换以及边界通量作用的减弱，使得冷涡逐渐衰亡。
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| 关 键 词： | 东北冷涡，能量收支，能量循环 |
| 收稿时间： | 1995/10/20 0:00:00 |
| 修稿时间： | 1996/9/28 0:00:00 |
A ENERGETICS STUDY OF A NORTHEAST COLD VORTEX |
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| Sun Li.A ENERGETICS STUDY OF A NORTHEAST COLD VORTEX[J].Acta Meteorologica Sinica,1998,56(3):349-361. |
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| Authors: | Sun Li |
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| Institution: | Jilin Research Institute of Meteorological Science, Changchun, 130062 |
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| Abstract: | Through the investigation into the energetics of a typical case of Northeast cold vortex it has been found that distinct features exist for different periods. Before the development of the cold vortex, the transformation among various energies and the variations of the boundary transfers are small. In the early developing stage of the cold vortex, the effect of boundary transfer of the eddy kinetic energy (EKE) is very important. Afterward the eddy available potential energy (EAPE) by the diabatic heating and the transformation from the zonal average kinetic energy to the EKE also increase rapidly. These fact or slead to the intense development of the cold vortex. |
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| Keywords: | Northeast cold vortex Energy budget Energy cycle |
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