Application of Digital Filtering Initialization in A Limited Area Model over Indian Region

印度地區有限區域模式之數值過濾初始化應用

A.Bandyopadhyay ； Usha Lyer ； S. S. Singh

《Terrestrial, Atmospheric and Oceanic Sciences》 10卷2期 (1999/06) Pp. 471-490

並列摘要

In order to efficiently and self-consistently describe the transport ofhigh-latitude ionospheric plasma into the magnetosphere,we have developeda Dynamic coupled Fluid-Kinetic(DyFK)model for describing plasmaflow along a magnetic flux tube.The collision-dominated ionospheric plasmais treated with a low-speed fluid approach for altitudes between 120-1100km,while a generalized semikinetic approach is used for the topside andhigher altitudes,starting at 800km.This paper presents a description ofthe new DyFK model,along with illustrative results obtained from modelingthe effects of soft(100eV)auroral electron precipitation using the newmodel.The results demonstrate the accuracy and efficiency of the newDyFK model and illustrate how soft electron precipitation provides a mechanismto drive observed upflows of high-latitude ionospheric plasma alonggeomagnetic field lines.

並列關鍵字

Initialization ； Digital Filter ； Non-Recursive ； Numerical Weather Prediction ； Limited Area Model