摘要
本文利用地转动量近似,并假设气压场为定常的圆形涡旋和初始风场不满足四力平衡(气压梯度力、科里奥利力、湍流粘性力和半地转惯性力)的条件下,求解了正压边界层中风场向气压场调整的初边值问题,得到了一些初步结论。本工作为利用四力平衡下的风速分布来诊断预报边界层风场提供了理论依据。
By using the geostrophic momentum approximation and assuming a stationary pressure field of a circular vortex , the solution of wind velocity in the planetary boundary layer (PBL) is obtained under the initial condition that the distribution of wind velocity does not satisfy the balance among the four forces (pressure gradient force, Coriolis force, eddy viscosity force and semigeostrophic initial force). From which some conclusions are gained. The work provides scientific basis. in theory for applying the solution of the balance among the four forces to diagnose the wind field in the PBL .
出处
《大气科学》
CSCD
北大核心
1991年第2期110-119,共10页
Chinese Journal of Atmospheric Sciences
关键词
地转动量
边界层
风场
调整
Geostrophic momentum
Boundary layer
Wind field .
