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行星边界层中多极值风速廓线的研究
A STUDY ON MULTI-LEVEL WIND VELOCITY PROFILE IN THE PLANETARY BOUNDARY LAYER
【摘要】 本文利用325米气象塔及声雷达探测资料分析了夜间平稳天气条件下行星边界层中风速出现多极值的现象。分析指出,多极值风速与边界层中多层逆温有密切的联系,当温度场出现多层逆温并维持一定的强度和时间后,便相应地出现了多层风速极大,风速极大值出现的高度在逆温顶附近或稍高。 文内还用一维非定常模式模拟了多极值风速廓线的形成。
【Abstract】 In this paper, the multi-level wind velocity in the nocturnal steady state PBL is analysed, using the data of the 325 meter meteorological tower and acoustic sounder. It is indicated that the multi-level wind velocity is always associated with multi-level inversion. When a multi-level inversion with a significant strength exists and lasts a considerable period of time, a multi-level wind velocity occurs correspondingly. The height of the wind velocity maximum is near the top of the inversion.The formation of the profile of the multi-level wind velocity is simulated with a one-dimensional non-steady model.
- 【文献出处】 大气科学 ,Chinese Journal of Atmospheric Sciences , 编辑部邮箱 ,1982年03期
- 【被引频次】13
- 【下载频次】75