Time/altitude electron density variability above ebro, Spain

被引：18

作者：

Altadill, D. ^{[1
]}

机构：

[1] Univ Ramon Llull, CSIC, Observ Ebro, E-43520 Roquetes, Spain

来源：

ADVANCES IN SPACE RESEARCH | 2007年 / 39卷 / 05期

关键词：

ionosphere variability; IRI model; electron density profiles; B parameters; variability-quartile-median-IRI;

D O I：

10.1016/j.asr.2006.05.031

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The time series of electron density profiles N(h) obtained at midlatitude station Ebro (40.5 degrees N, 0.5 degrees E) since 1995 up to now have been evaluated in order to obtain the typical time/altitude electron density variability. The standard deviation sigma(h) of the individual profiles from Monthly Averaged Representative Profile (MARP) is used for such purpose. The percentage of c(h) vs. MARP shows a distinct daily.. seasonal and altitude pattern of variability. As expected, the larger variability occurs during night-time, there being however much better expressed at the base of the F region. Typical values of percentage of variability at altitudes of the electron density maximum are 10-20%, whereas they can be as large as 50% during night-time at the base of the F region. The systematic daily, seasonal and long-term behaviors of sigma(h) are discussed in terms of potential modeling purposes. The potential physical causes driving systematic behavior of sigma(h) are discussed also. (C) 2006 COSPAR. Published by Elsevier Ltd. All rights reserved.

引用

页码：962 / 969

页数：8

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