【摘 要】
：
This paper tests the impacts of cloud-induced mass forcing on the moist potential vorticity (MPV) anomaly associated with torrential rains caused by Typhoon No.
【机 构】
：
National Meteorological Center,Institute of Atmospheric Physics
论文部分内容阅读
This paper tests the impacts of cloud-induced mass forcing on the moist potential vorticity (MPV) anomaly associated with torrential rains caused by Typhoon No.9914 (Dan) by using fine model simulation data outputted by the Fifth-Generation NCAR / Penn State Mesoscale Model (MM5). The diagnostic results show that the positive MPV anomaly region, which is obtained by integrating the MPV from 600 hPa to 300 hPa in the vertical, roughly coincides with the precipitation at their synchronous stages either in position or in the distribution pattern, and the maximum positive MPV area of Dan is located mainly between 600 hPa and 300 hPa, which is much higher than torrential rain cases. Further analyses also showed that the value of positive MPV anomaly increased or decreased with the development of Dan, and the positive MPV anomaly may also be served as a tracer to indicate the evolution of tropical cyclone intensity.
其他文献
翻车机房下部构筑物为地下工程,深井降水的成功与否直接关系到工程能否顺利进行.本文简要介绍天津港南疆港区神华煤炭码头翻车机房深井降水的设计及施工.
提出了利用粗糙集理论处理不完整信息的能力对红外弱小目标的运动轨迹进行辨识的检测方法。首先利用形态学滤波算法,分离出每帧图像中候选目标并提取其特征属性。把提取到的
±800 kV特高压输电线路的设计需要大比例尺的地质、构造、地形地貌等资料,在项目已有的资料难以满足线路设计要求的情况下,利用遥感技术,尝试将高空间分辨率的黑白航片与色彩信息丰富的ETM+影像进行彩色融合,基于融合影像,建立沿线地层、岩性、断裂构造、地形地貌、植被和不良地质体的遥感解译标志,从而进行输电线路11∶0 000工程地质遥感解译,并基于解译结果进行输电线路工程地质稳定性评价和分区,取得了
A study was conducted to examine the germination requirements of Cedrela odorata, Guaiacum sanctum and Calycophyllum candidissimum seeds, and the effect of ligh
预应力锚杆支护技术广泛应用于边坡工程,但预应力锚杆的作用机理还缺乏系统深入的研究。通过利用ANSYS提供的非线性弹塑性模型,结合一边坡锚喷支护工程实例,采用基于摩尔-库
利用MATLAB编写核心程序,实现了基于人工神经网络方法的网架结构选型优化设计。结果表明,该方法能较好的进行网架结构的选型,从而节约建造成本。
Using MATLAB to write the
Scissor-like element has a number of applications in deployable structures such as planar deployable structure (PDS) and ring deployable structure(RDS). However
随着时代的发展和社会的进步,人类社会的可持续发展已经成为我们日益关注的问题.人们开始倡导绿色消费,提倡绿色文化,由此引发了营销史上的又一次革命--绿色营销.通过阐述我
本文利用时间序列数据对FDI的环境效应进行了整体分析,利用省际面板数据对FDI、人均收入和环境污染进行了区域分析。结果表明:FDI对环境产生了负的规模效应、负的结构效应和