Extraction of solar and thermospheric information from the ionospheric electron density profile
文献类型：期刊论文
| 作者 | Zhang, SB; Oliver, WL; Fukao, S; Kawamura, S |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2001-07-01 |
| 卷号 | 106期号:A7页码:12821-12836 |
| 英文摘要 | This exploratory study of ionospheric electron density N-e profile assimilation concerns the extraction of information on exospheric temperature T-ex, atmospheric composition [O] and [N-2], meridional thermospheric winds, and solar EUV flux. These parameters are used as input variables to an ionospheric model and adjusted, one, two, or three at a time, to bring the model N-e profile into best agreement with an experimental N-e profile. The important ambiguity/uniqueness issue in the multiple-variable fit, which has yet to be addressed in the literature, is discussed. We found the following: (1) In a single-variable fit, any variable tested may be adjusted successfully to improve the data-model fit, but the validity of the derived variable generally depends on the validity of the values chosen for the fixed parameters. (2) The best fit model profile from a single-variable fit sometimes shows clear differences from the measured profile, indicating that multiple-variable fitting is warranted. The multiple-variable fit often greatly reduces the model-data profile differences and improves the error bars on the derived parameters. (3) Multiple-variable fits often show large variable correlations, indicating that variable determination is often not unique. (4) The meridional wind often shows weak correlation with other variables, suggesting that the meridional wind and any other parameter can be reliably extracted, provided that the other atmospheric variables are known. (5) [N-2] often shows strong correlation with other parameters (except with the wind). The EUV flux and [O] also show large correlation. (6) The T-ex-[O] and T-ex-EUV pairs show medium to high correlation. (7) The three-variable fits nearly always show large ambiguities in the derived parameters. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | F-REGION ; WINDS ; MODEL ; HEIGHT ; RADAR |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000169535400007 |
| 公开日期 | 2015-12-08 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/8615]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Boston Univ, Ctr Space Phys, Boston, MA 02215 USA 2.Kyoto Univ, Radio Sci Ctr Space & Atmosphere, Uji, Kyoto 6110011, Japan 3.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan, Peoples R China 4.Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA |
| 推荐引用方式 GB/T 7714 | Zhang, SB,Oliver, WL,Fukao, S,et al. Extraction of solar and thermospheric information from the ionospheric electron density profile[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2001,106(A7):12821-12836. |
| APA | Zhang, SB,Oliver, WL,Fukao, S,&Kawamura, S.(2001).Extraction of solar and thermospheric information from the ionospheric electron density profile.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,106(A7),12821-12836. |
| MLA | Zhang, SB,et al."Extraction of solar and thermospheric information from the ionospheric electron density profile".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 106.A7(2001):12821-12836. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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