Study of the evolution of Te and Ti at the low-latitude upper ionosphere using SROSS-C2 RPA observations

被引：8

作者：

Nayar, SRP ^{[1
]}

Alexander, LT

Radhika, VN

John, T

Subrahmanyam, P

Chopra, P

Bahl, M

Maini, HK

Singh, V

Singh, D

Garg, SC

机构：

[1] Univ Kerala, Dept Phys, Trivandrum 695581, Kerala, India

[2] Natl Phys Lab, Radio & Atmospher Sci Div, New Delhi 100010, India

来源：

JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 2004年 / 66卷 / 12期

关键词：

electron temperature; ion temperature; diurnal variation; SROSS-C2; RPA payload;

D O I：

10.1016/j.jastp.2004.04.002

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The SROSS-C2 satellite Retarding Potential Analyser measurements during 1995-2000 is used to make a direct comparison of electron and ion temperatures at the low-latitude upper ionosphere. The temperatures T-e and T-i exhibit prominent diurnal and solar cycle and weak seasonal variations. Both T-e and T-i exhibit similar diurnal features with morning and evening enhancements. Characteristics of these enhancements are found to evolve with season, altitude, latitude and solar activity. The daytime and nighttime mean values of electron and ion temperatures at the low-latitude ionosphere evolve differently and exhibit different long-term variations over minimum to maximum of a solar cycle. The nighttime mean values of T-e and T-i during 1995-2000 increase with solar activity indicated by the solar radio flux. Whereas the daytime mean values of T-e decrease with solar activity and the daytime mean value of T-i do not exhibit the solar cycle evolution. (C) 2004 Elsevier Ltd. All rights reserved.

引用

页码：1075 / 1083

页数：9