| 西北地区沙尘暴预报方法的初步研究 |
| |
| 引用本文： | 孙军,李泽椿.西北地区沙尘暴预报方法的初步研究[J].气象,2001,27(1):19-24. |
| |
| 作者姓名： | 孙军 李泽椿 |
| |
| 作者单位： | 国家气象中心, |
| |
| 摘 要： | 沙尘暴是我国西北地区春季常发生的一种灾害性天气现象，也是气象业务预报工作中的一个难点。作者首先建立一个沙尘暴产生的天气学概念模型；据此模型，设计了用摩擦速度和大气边界层稳定度状况来对沙尘暴进行预报的数值方法；用PSU／NCAR的非静力中尺度模式MM5对该天气学模型的检验结果表明了该模型的合理性。最后给出了运用天气学原理和数值预报方法相结合来对沙尘暴进行预报的流程图。
|
| 关 键 词： | 沙尘暴 边界层状况 摩擦速度 RICHARDSON数 预报方法 西北地区 MM5中尺度模式 天气学模型 |
A Tentative Study of the Forecasting Method of the Dust Storms in the Northwest of China |
| |
| Sun Jun,Li Zechun.A Tentative Study of the Forecasting Method of the Dust Storms in the Northwest of China[J].Meteorological Monthly,2001,27(1):19-24. |
| |
| Authors: | Sun Jun Li Zechun |
| |
| Abstract: | The dust storm is a disastrous weather phenomenon which often occurs in spring in the Northwest of China and is difficult to forecast. Firstly, a synoptic concept model about its happening was developed.According to this model, a numerical forecasting method was designed by means of the calculation of the PBL regimes(stable, mechanically driven turbulence, forced convection and the free-convection regime) and friction velocity.The rationality is shown by a verification on the model with the PSU/NCAR numerical model MM5. Finally, a flowing chart of short-range forecasting method ,which combining the synoptic principle and numerical forecasting technology,was given. |
| |
| Keywords: | dust storm PBL regimes friction velocity Richardson number forecasting method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《气象》浏览原始摘要信息 |
|
点击此处可从《气象》下载全文 |
