《气表—1》审核程序编制

在IBM—PC机上完成<气表—1>审核工作,安徽等省早已进行,但由于我省地形复杂,故适用性不大。为了加速现代化的步伐提高工作质量和时效,根据我省具体情况,审核程序课题组收集、归纳、整理了优秀审核员的经验,综合考虑高原、高山、平原,丘陵等复杂气候因素;并根据不同气候     

NUMERICAL EXPERIMENTS ON NH SUBTROPICAL UPPER TROPOSPHERIC QUASI-STATIONARY VORTICES IN SUMMER

To reveal the possible factors affecting the maintenance and interannual variations of the subtropical planetary-scale vortices such as the south Asian anticyclone and the mid-oceanic troughs, a series of numerical experiments are conducted with a quasi-geostrophic low-resolution spectral model. Firstly, a simulation experiment is performed in which the realistic thermal and topographic forcing are incorporated. The results of simulation show a certain similarity to the actual subtropical flow field in July. On the basis of simulation experiment a series of contrast experiments are performed. It is found that the topographic boundary forcing is less important than the thermal forcing in the dynamics of these systems, and that the anomaly of heating field may cause significant change in position and intensity of the south Asian high and the other systems. It is speculated that the response of the subtropical large-scale systems to heating anomaly is an important cause for the interannual variations of ci     

暴雨中两种尺度系统间动能转换的分析

本文利用平滑滤波方法,分离次天气尺度与天气尺度系统。选取同一暴雨过程中两个时次,计算暴雨系统中这两个时次的天气尺度和次天气尺度系统间动能转换量。得出:200hpa以上,次天气尺度系统对天气尺度系统是一个动能源;200hpa以下则相反;整层积分结果是天气尺度系统提供动能给次天气尺度系统,与文献[1]中次天气尺度系统向天气尺度系统转换动能是不同。说明不同暴雨过程中,两种尺度系统间动能转换量((?)·(?))的正负,大小及分布可能是不同的。