Global Responses of the Coupled Thermosphere and Ionosphere System to the August 2017 Great American Solar Eclipse
文献类型：期刊论文
| 作者 | Dang, Tong1,2; Lei, Jiuhou1; Wang, Wenbin2; Zhang, Binzheng2; Burns, Alan2; Le, Huijun3; Wu, Qian2; Ruan, Haibing1; Dou, Xiankang1; Wan, Weixing3 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2018-08-01 |
| 卷号 | 123期号:8页码:7040-7050 |
| 关键词 | solar eclipse ionosphere-thermosphere coupling traveling atmospheric disturbances TIEGCM simulation electrodynamic coupling |
| ISSN号 | 2169-9380 |
| DOI | 10.1029/2018JA025566 |
| 英文摘要 | It is commonly believed that solar eclipses have a great impact on the ionosphere-thermosphere (I-T) system within the eclipse shadow, but little attention has been paid to the global response to these events. In this study, we investigate the global upper atmospheric responses to the recent Great American Solar Eclipse that occurred on 21 August 2017 using a high-resolution coupled ionosphere-thermosphere-electrodynamics model. The simulation results show that the ionosphere and thermosphere response to the eclipse is not just local but global. Large-scale traveling atmospheric disturbances (TADs), seen in the thermospheric temperature and winds, were triggered from the eclipse region and propagated in a southeast direction when the eclipse ended. A large total electron content (TEC) enhancement occurred over South America after the eclipse was over. The TEC enhancement was primarily the result of transport by the thermospheric wind perturbations associated with the eclipse-induced TADs. The perturbations of TEC, neutral temperature, and winds exhibited asymmetric distributions with respect to the totality path during the solar eclipse. Furthermore, ionospheric electrodynamic processes also play an important role in the global responses of the I-T system to the solar eclipse. Unlike the case of large-scale TADs propagating from the eclipse region to other locations in the globe, the ionospheric electric fields and plasma drifts began to show significant perturbations even during the local pre-eclipse period when local wind and temperature had not been perturbed. This is related to the instantaneous global response of the ionospheric current system to changes in the ionospheric conductivity and winds in the eclipse region. Plain Language Summary The ionosphere is a region at about 60-1,000 km, where the upper atmosphere includes the layers of the mesosphere and thermosphere and the neutral gas is partially ionized by the solar irradiation. During the solar eclipse, the ionosphere-thermosphere (I-T) system within the Moon's shadow can be greatly changed by the reduction of solar flux and energy input. However, little attention has been paid to the global I-T responses. High-resolution simulations of the 21 August 2017 solar eclipse provide us new insight that the I-T response to the eclipse is not just local but global. Eclipse passage generated global perturbations of the ionosphere and thermosphere through dynamic and electrodynamic processes. |
| WOS关键词 | GENERAL-CIRCULATION MODEL ; MILLSTONE-HILL ; F-REGION ; MARCH 9 ; ELECTRODYNAMICS ; SATELLITE ; BEHAVIOR ; BEACON |
| 资助项目 | National Natural Science Foundation of China[41325017 41421063] ; National Natural Science Foundation of China[41831070] ; Thousand Young Talents Program of China ; National Postdoctoral Program for Innovative Talents ; 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 Science Foundation ; National Science Foundation (NSF) |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000445731300062 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 资助机构 | National Natural Science Foundation of China ; National Natural Science Foundation of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; 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 Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; 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 Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; 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 Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Thousand Young Talents Program of China ; Thousand Young Talents Program of China ; National Postdoctoral Program for Innovative Talents ; National Postdoctoral Program for Innovative Talents ; 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 Science Foundation ; National Science Foundation ; National Science Foundation (NSF) ; National Science Foundation (NSF) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/89217]  |
| 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 | Lei, Jiuhou |
| 作者单位 | 1.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Geospace Environm, Hefei, Anhui, Peoples R China 2.Natl Ctr Atmospher Res, High Altitude Observ, Pob 3000, Boulder, CO 80307 USA 3.Chinese Acad Sci, Inst Geol & Geophys, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dang, Tong,Lei, Jiuhou,Wang, Wenbin,et al. Global Responses of the Coupled Thermosphere and Ionosphere System to the August 2017 Great American Solar Eclipse[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2018,123(8):7040-7050. |
| APA | Dang, Tong.,Lei, Jiuhou.,Wang, Wenbin.,Zhang, Binzheng.,Burns, Alan.,...&Wan, Weixing.(2018).Global Responses of the Coupled Thermosphere and Ionosphere System to the August 2017 Great American Solar Eclipse.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,123(8),7040-7050. |
| MLA | Dang, Tong,et al."Global Responses of the Coupled Thermosphere and Ionosphere System to the August 2017 Great American Solar Eclipse".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 123.8(2018):7040-7050. |
入库方式： OAI收割
来源：地质与地球物理研究所
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