DOI: 10.1002/2015GL067312
论文题名: A new source of the midlatitude ionospheric peak density structure revealed by a new Ionosphere-Plasmasphere model
作者: Maruyama N. ; Sun Y.-Y. ; Richards P.G. ; Middlecoff J. ; Fang T.-W. ; Fuller-Rowell T.J. ; Akmaev R.A. ; Liu J.-Y. ; Valladares C.E.
刊名: Geophysical Research Letters
ISSN: 0094-9226
EISSN: 1944-8957
出版年: 2016
卷: 43, 期: 6 起始页码: 2429
结束页码: 2435
语种: 英语
英文关键词: midlatitude ionosphere
; new ionosphere model
; new plasma density peak
Scopus关键词: Geomagnetism
; Ionospheric measurement
; Magnetoplasma
; Magnetosphere
; Plasma density
; Sensor networks
; Equatorial ionization anomaly
; Geomagnetic equator
; Ionosphere modeling
; Longitudinal variations
; Magnetic field line
; Mid-latitude ionosphere
; new plasma density peak
; Total electron content
; Ionosphere
; atmospheric modeling
; electron density
; GPS
; ionization
; ionosphere
; longitudinal gradient
; magnetic field
; midlatitude environment
; recombination
; South America
英文摘要: The newly developed Ionosphere-Plasmasphere (IP) model has revealed neutral winds as a primary source of the "third-peak" density structure in the daytime global ionosphere that has been observed by the low-latitude ionospheric sensor network GPS total electron content measurements over South America. This third peak is located near -30° magnetic latitude and is clearly separate from the conventional twin equatorial ionization anomaly peaks. The IP model reproduces the global electron density structure as observed by the FORMOSAT-3/COSMIC mission. The model reveals that the third peak is mainly created by the prevailing neutral meridional wind, which flows from the summer hemisphere to the winter hemisphere lifting the plasma along magnetic field lines to higher altitudes where recombination is slower. The same prevailing wind that increases the midlatitude density decreases the low-latitude density in the summer hemisphere by counteracting the equatorial fountain flow. The longitudinal variation of the three-peak structure is explained by the displacement between the geographic and geomagnetic equators. ©2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971658612&doi=10.1002%2f2015GL067312&partnerID=40&md5=5901d63b88e14ec702c0d150f9b3ad15
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10189
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Cooperative Institute for Research in Environmental Sciences, University of Colorado at Boulder, Boulder, CO, United States
Recommended Citation:
Maruyama N.,Sun Y.-Y.,Richards P.G.,et al. A new source of the midlatitude ionospheric peak density structure revealed by a new Ionosphere-Plasmasphere model[J]. Geophysical Research Letters,2016-01-01,43(6).