Vertical variations of a neutral 'tongue' during the recovery phase of the geomagnetic storm on April 20, 2020
文献类型：期刊论文
| 作者 | Yu TingTing1,2,3; Ren ZhiPeng1,2,3; Cai NuGuang4; Li ShaoYang1,2,3 |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2023-11-01 |
| 卷号 | 66期号:11页码:4437-4450 |
| ISSN号 | 0001-5733 |
| 关键词 | Tongue of neutral composition O/N-2 Storm Poleward wind |
| DOI | 10.6038/cjg2023R0067 |
| 英文摘要 | A 'tongue' of neutral composition (TON) in O and N-2 column density ratio (Sigma O/N-2) at middle-low latitudes was observed by the Global -scale Observations of the Limb and Disk (GOLD) on DOY (day of year) 112 during the recovery phase of geomagnetic storm on April, 20 2020. The TON was an area of positive Sigma O/N-2 variations sandwiched by two regions of negative Sigma O/N-2 variations. Thermosphere-Ionosphere-Electrodynamics General Circulation Model (TIEGCM) qualitatively reproduced the GOLD observed Sigma O/N-2 enhancement during the storm recovery phase, and indicated that it was transported from local afternoon of the previous day (DOY 111). The simulations presented the vertical variations of the TON, and the magnitude and latitude range of the structure have a significant altitude dependency. The diagnostic analysis showed that the downwelling first resulted in the O/N-2 enhancement at the lower latitudes of similar to 30 degrees N-70 degrees N. Then the O/N-2 enhancement was transported to higher latitudes by the horizontal advection driven by poleward winds. At middle-low thermosphere (similar to 120 to 300 km), the poleward winds at middle-low latitudes that dominated the evolution of the TON structure were primarily caused by the pressure gradient force. The Coriolis force also contributed positively a little to the poleward winds. At higher thermosphere of above similar to 300 km, the momentum forcing of the poleward winds was determined by the pressure gradient and the vertical viscosity force with opposite directions. |
| WOS关键词 | DENSITY |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:001098162400003 |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/111175]  |
| 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 | Ren ZhiPeng |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing Natl Observ Space Environm, Beijing 100029, Peoples R China 3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China 4.Univ Colorado Boulder, Lab Atmospher & Space Phys, Boulder, CO 80304 USA |
| 推荐引用方式 GB/T 7714 | Yu TingTing,Ren ZhiPeng,Cai NuGuang,et al. Vertical variations of a neutral 'tongue' during the recovery phase of the geomagnetic storm on April 20, 2020[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2023,66(11):4437-4450. |
| APA | Yu TingTing,Ren ZhiPeng,Cai NuGuang,&Li ShaoYang.(2023).Vertical variations of a neutral 'tongue' during the recovery phase of the geomagnetic storm on April 20, 2020.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,66(11),4437-4450. |
| MLA | Yu TingTing,et al."Vertical variations of a neutral 'tongue' during the recovery phase of the geomagnetic storm on April 20, 2020".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 66.11(2023):4437-4450. |
入库方式： OAI收割
来源：地质与地球物理研究所
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