Response of the F2-peak electron density and height to plasma depletion bays in the equatorial nighttime ionosphere observed by FORMOSAT-7/COSMIC-2

Fu Yuan Chang, Jann Yenq Liu, Panthalingal Krishnanunni Rajesh, Chi Yen Lin

研究成果: Article同行評審

1 引文 斯高帕斯(Scopus)

摘要

FORMOSAT-7/COSMIC-2 (F7/C2) satellite cluster, launched in June 2019, performs radio occultation experiments observing the vertical electron density profiles in the low-latitude ionosphere. The F7/C2 F2-peak electron density (NmF2) and height (hmF2) are used to identify and examine the behavior of the plasma depletion bay (PDB) structures in the equatorial nighttime ionosphere. The NmF2 reveals three distinct PDBs within 60°W–15°E, 30−90°E, and 110−160°E during June solstice, while a single PDB appears within 150−60°W during December solstice. All the four PDBs’ features simultaneously appear during March and September equinoxes. Asymmetries in the hmF2 over the PDB regions suggests that the electron density increases (decreases) are related to the NmF2 ascending (descending) in the summer (winter) hemispheres. Agreements between F7/C2 observations and HWM93 results show that the asymmetry of vertical motions driven by the neutral wind is the main causal mechanism for the longitudinal variation of PDBs.

原文English
頁(從 - 到)690-697
頁數8
期刊Advances in Space Research
73
發行號1
DOIs
出版狀態Published - 2024 1月 1

All Science Journal Classification (ASJC) codes

  • 航空工程
  • 天文和天體物理學
  • 地球物理
  • 大氣科學
  • 空間與行星科學
  • 一般地球與行星科學

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