An exospheric temperature model from CHAMP thermospheric density

被引：20
|
作者：
Weng, Libin [1 ,2 ]
Lei, Jiuhou [1 ]
Sutton, Eric [3 ]
Dou, Xiankang [1 ]
Fang, Hanxian [2 ]
机构：
[1] Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Geospace Environm, Hefei, Peoples R China
[2] PLA Univ Sci & Technol, Inst Meteorol & Oceanog, Nanjing, Jiangsu, Peoples R China
[3] US Air Force, Res Lab, Space Environm Branch, Albuquerque, NM USA
来源：
SPACE WEATHER-THE INTERNATIONAL JOURNAL OF RESEARCH AND APPLICATIONS | 2017年 / 15卷 / 02期
基金：
中国国家自然科学基金;
关键词：
NEUTRAL DENSITY; SATELLITE DRAG;
D O I：
10.1002/2016SW001577
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this study, the effective exospheric temperature, named as T-infinity, derived from thermospheric densitiesmeasured by the CHAMP satellite during 2002-2010 was utilized to develop an exospheric temperature model(ETM) with the aid of the NRLMSISE-00 model. In the ETM, the temperature variations are characterized as a function of latitude, local time, season, and solar and geomagnetic activities. The ETM is validated by the independent GRACE measurements, and it is found that T-infinity and thermospheric densities from the ETM are in better agreement with the GRACE data than those from the NRLMSISE-00model. In addition, the ETMcaptures well the thermosphericequatorialanomaly feature, seasonalvariation, andthehemisphericasymmetryinthethermosphere.
引用
收藏
页码：343 / 351
页数：9
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