| 北半球中高纬月平均环流正压斜压动能的年变化特征 |
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| 引用本文： | 黄建平,丑纪范.北半球中高纬月平均环流正压斜压动能的年变化特征[J].高原气象,1988(3). |
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| 作者姓名： | 黄建平 丑纪范 |
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| 作者单位： | 兰州大学大气科学系
(黄建平)，兰州大学大气科学系(丑纪范) |
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| 基金项目： | 《长期天气预报理论、方法和资料库的建立》课题 |
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| 摘 要： | 本文利用多年月平均资料计算了北半球中高纬月平均环流正压、斜压动能的年变化特征。结果表明无论正压、斜压动能都具有明显的年变化,而且两者的变化趋势也是一致的,但是正压动能要比斜压动能对总动能的贡献大得多。环流异常具有相当正压的垂直结构。有关结论可为长期数值预报模式的简化提供依据。
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| 关 键 词： | 正压动能 斜压动能 年变化 相当正压 |
ON THE ANNUAL VARIATION OF THE BAROTROPIC AND BAROCLINIC KINETIC ENERGY OF MONTHLY MEAN CIRCULATION OVER THE MID-HIGH LATITUDE OF THE NORTHERN HEMISPHERE |
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| Huang Jianping Chou Jifan.ON THE ANNUAL VARIATION OF THE BAROTROPIC AND BAROCLINIC KINETIC ENERGY OF MONTHLY MEAN CIRCULATION OVER THE MID-HIGH LATITUDE OF THE NORTHERN HEMISPHERE[J].Plateau Meteorology,1988(3). |
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| Authors: | Huang Jianping Chou Jifan |
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| Abstract: | using secular monthly mean data, the annual variation of the barotro-pic and baroclinic kinetic energy for monthly mean circulation has been computed. It is showed that both barotropic and baroclinic kinetic energy have the obvious annual variation and the same tendency, but the contribution of barotropic kinetic energy to total kinetic energy is much more than that of baroclinic kinetic energy.The monthly mean circulation ano- maly has the equivalent barotropic structure.These conclusions can be used to simplify the long-range numerical forecast model. |
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| Keywords: | Barotropic kinetic energy Baroclinic kinetic energy Annual variation Equivalent barotropic |
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