| THE INFLUENCE OF STRATIFICATION ON FRONTOGENESIS CAUSED BY GEOSTROPHIC ADJUSTMENT |
| |
| 作者姓名： | 王云峰 伍荣生 |
| |
| 作者单位： | Laboratory of Mesoscale Severe Weather and Department of Atmospheric Sciences Nanjing University Nanjing 210093，Laboratory of Mesoscale Severe Weather and Department of Atmospheric Sciences Nanjing University，Nanjing 210093 |
| |
| 基金项目： | This work is supported financially under the Project(49675259)by the National Natural Science Foundation of China. |
| |
| 摘 要： | A uniform,inviscid,incompressible fluid in a two-dimensional plane(x,z)is considered.Three principles:conservation of potential vorticity,conservation of absolute momentum,andconservation of mass are used for this study.If the initial mass field and the initial wind field donot satisfy geostrophic balance,then through geostrophic adjustment under suitable conditions,the frontogenesis will finally occur.Our work points out that the initial density distribution greatlyinfluences the frontal features.If the stratification in cold air is the same as that in warm air,twofrontogeneses will occur at top and bottom boundaries respectively.If the stratification in cold airis larger than that in warm air,the frontogenesis at the bottom boundary still exists,but the otherat the top boundary disappears.This result makes us further understand the mechanism of thefrontogenesis in the real atmosphere.
|
THE INFLUENCE OF STRATIFICATION ON FRONTOGENESIS CAUSED BY GEOSTROPHIC ADJUSTMENT |
| |
| Wang Yunfeng Wu Rongsheng Laboratory of Mesoscale Severe Weather and.THE INFLUENCE OF STRATIFICATION ON FRONTOGENESIS CAUSED BY GEOSTROPHIC ADJUSTMENT[J].Acta Meteorologica Sinica,1998(3). |
| |
| Authors: | Wang Yunfeng Wu Rongsheng Laboratory of Mesoscale Severe Weather and |
| |
| Institution: | Wang Yunfeng Wu Rongsheng Laboratory of Mesoscale Severe Weather and Department of Atmospheric Sciences Nanjing University,Nanjing 210093 |
| |
| Abstract: | A uniform,inviscid,incompressible fluid in a two-dimensional plane(x,z)is considered. Three principles:conservation of potential vorticity,conservation of absolute momentum,and conservation of mass are used for this study.If the initial mass field and the initial wind field do not satisfy geostrophic balance,then through geostrophic adjustment under suitable conditions, the frontogenesis will finally occur.Our work points out that the initial density distribution greatly influences the frontal features.If the stratification in cold air is the same as that in warm air,two frontogeneses will occur at top and bottom boundaries respectively.If the stratification in cold air is larger than that in warm air,the frontogenesis at the bottom boundary still exists,but the other at the top boundary disappears.This result makes us further understand the mechanism of the frontogenesis in the real atmosphere. |
| |
| Keywords: | mesoscale weather geostrophic adjustment frontogenesis |
| 本文献已被 CNKI 等数据库收录！ |
