alpha-Chapman Scale Height: Longitudinal Variation and Global Modeling
文献类型：期刊论文
| 作者 | Li, Qiaoling1,2,3,4; Liu, Libo1,2,3,4; Jiang, Jinzhe1,2,3,4; Li, Wenbo1,2,3,4; Huang, He1,2,3; Yu, You1,2,3; Li, Jiacheng1,2,3,4; Zhang, Ruilong1,2,3; Le, Huijun1,2,3,4; Chen, Yiding1,2,3,4 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
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| 出版日期 | 2019-03-01 |
| 卷号 | 124期号:3页码:2083-2098 |
| 关键词 | topside ionosphere scale height longitudinal variation global modeling |
| ISSN号 | 2169-9380 |
| DOI | 10.1029/2018JA026286 |
| 英文摘要 | Scale height measures the altitude gradient of the electron density profile and relates with the ionospheric chemistry and dynamics, while its longitudinal variation has not been fully investigated in both statistical analyses and empirical modelings. In this study, 11-year electron density profiles from Constellation Observing System for Meteorology, Ionosphere, and Climate radio occultations are collected to retrieve the alpha-Chapman scale height (Hm) from the lower topside ionospheric electron density profile (within 200-km altitudes above the peak height of F2 layer [hmF2]) by fitting alpha-Chapman function with a constant scale height. The Hm shows evident longitudinal variations at midlatitudes, and its zonal structure shows a consistency with that of hmF2 during daytime, which indicates neutral winds change the ionospheric height and shape at the same time. Further, a global modeling of Hm named 2PCAFourier-Hm is built based on a two-layer Principle Component Analysis combined with Fourier regression analysis of its coefficients under low and moderated solar activity. Longitudinal variation is considered in the Hm's modeling, along with the variations of local time, latitude, day of the year, and solar activity. Overall, the model well captures the temporal and spatial variations of Hm with a root-mean-square error of 2.25 km and a correlation coefficient of 0.97 with respect to the Constellation Observing System for Meteorology, Ionosphere, and Climate observations. Plain Language Summary Scale height is the logarithmic altitude gradient of the electron density profile and tightly relates with ionospheric dynamics, plasma thermal structure, and composition. However, longitudinal dependence of scale height has not been fully investigated especially at midlatitudes. Longitudinal variation is such that ionospheric parameters show evident zonal difference at the same local time. Moreover, nearly no empirical models of scale height include the longitude as a variable though Liu et al. (2008, ) found equatorial scale height has evident wave-like longitudinal variation. In this study, more than 4,100,000 samples of alpha-Chapman scale height (Hm) were retrieved from 11-year electron density profiles of Constellation Observing System for Meteorology, Ionosphere, and Climate. We found the midlatitude Hm has evident longitudinal variation, and its zonal structure is tightly relates with neutral winds' dynamics during daytime. Moreover, a five-dimensional (latitude, local time, longitude, day of year, and solar activity) empirical model of Hm is built based on a two-layer Principle Component Analysis combined with Fourier regression analysis of its coefficients. An executable MATLAB live code of this model is also provided in the supporting information. |
| WOS关键词 | VERTICAL ELECTRON-DENSITY ; INCOHERENT-SCATTER RADAR ; MIDLATITUDE IONOSPHERE ; IONOSONDE MEASUREMENTS ; EQUIVALENT WINDS ; PEAK PARAMETERS ; MILLSTONE HILL ; TEC ; EQUATORIAL ; LAYER |
| 资助项目 | National Natural Science Foundation of China[41621063] ; National Natural Science Foundation of China[41774161] ; National Natural Science Foundation of China[41704157] ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Postdoctoral Program for Innovative Talents[BX20180301] ; china Postdoctoral Science Foundation[2018M640175] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000466087900040 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; Open Research Project of Large Research Infrastructures of CAS"Study on the interaction between low/mid-latitude atmosphere and ionosphere based on the Chinese Meridian Project" ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation ; china Postdoctoral Science Foundation |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/92102]  |
| 专题 | 地质与地球物理研究所_中国科学院地球与行星物理重点实验室 |
| 通讯作者 | Liu, Libo |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing, Peoples R China 2.Chinese Acad Sci, Inst Earth Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing, Peoples R China 4.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Qiaoling,Liu, Libo,Jiang, Jinzhe,et al. alpha-Chapman Scale Height: Longitudinal Variation and Global Modeling[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2019,124(3):2083-2098. |
| APA | Li, Qiaoling.,Liu, Libo.,Jiang, Jinzhe.,Li, Wenbo.,Huang, He.,...&Chen, Yiding.(2019).alpha-Chapman Scale Height: Longitudinal Variation and Global Modeling.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,124(3),2083-2098. |
| MLA | Li, Qiaoling,et al."alpha-Chapman Scale Height: Longitudinal Variation and Global Modeling".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 124.3(2019):2083-2098. |
入库方式： OAI收割
来源：地质与地球物理研究所
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