IRI、NeQuick和Klobuchar模式比较研究  

The research of IRI、NeQuick and Klobuchar models

作　　者：方涵先[1,2] 翁利斌[1] 杨升高[1] 

机构地区：[1]解放军理工大学气象学院,南京211101 [2]空间天气学国家重点实验室,北京100190

出　　处：《地球物理学进展》2012年第1期1-7,共7页Progress in Geophysics

基　　金：国家重点实验室当项基金项目;解放军理工大学气象学院预研基金资助项目联合资助

摘　　要：本文介绍了三种常见的电离层经验模式:IRI、NeQuick和Klobuchar,并且利用Jason-1卫星上搭载的高度计探测到的太平洋上空2006年电离层延迟数据,对这三个模式在低纬、中高纬地区模拟电离层TEC的精度进行了比较研究,结果表明:NeQuick、IRI-2007模式可以较好地模拟出白天电离层TEC位于赤道两侧的双峰结构,但不能得到精确的峰值大小和位置信息;三个模式在中高纬地区的模拟精度指标几乎全面高于低纬地区,其中,IRI模式在中高纬地区精度较高,相关性达到0.82022,标准差为3.0844TECU,NeQuick和Klobuchar模式模拟精度相当;整体比较,IRI-2007模式自相关系数为0.81016,NeQuick模式为0.70717,Klobuchar模式也达到了0.6878,说明这三个模式都能较好地模拟出电离层TEC的背景特征.总体上,IRI-2007模式精度最高,可以更有效地修正电离层延迟误差.IRI, NeQuick, Klobuchar models were introduced, and this three familiar empirical ionospheric models were compared with TEC measurements from Jason-1 altimeter in low and middle-high latitudes around the Pacific Ocean in 2006. In this study, NeQuick and IRI can simulate the two-double peaks but can not present the peaks value and the locations accurately. The three models have much better agreement with TEC measurements by Jason- 1 in the middle-high latitudes than the low latitudes; in middle-high latitude area, the IRI model have a good correlation（R= 0. 82022） and low RMS（S= 3. 0844 TECU） to Jason-1 with respect to TEC measurements, NeQuick and Klobuchar have the same performance. Comparing all in the Pacific Ocean, the correlations of IRI- 2007, NeQuick and Klobuchar models are 0. 81016, 0. 70717 and 0. 6878, so as the three empirical models have a good performance in presenting the background of the ionospheric TEC. As a whole, IRI-2007 can reach a better correct effect than NeQuick and Klobuchar.

关 键 词：电离层电子总含量 IRI-2007模式 NeQuick模式 Klobuchar模式 卫星高度计 

分 类 号：P352[天文地球—空间物理学]