An observing system simulation experiment for FORMOSAT-5/AIP probing topside ionospheric plasma irregularities by using DEMETER/IAP

  • Author(s): Jann-Yenq Liu, Yang-Yi Sun, Chao-Chi Kuang, Shih-Ping Chen, and Michel Parrot
  • DOI: 10.3319/TAO.2016.08.18.01(EOF5)
  • Keywords: FORMOSAT-5, AIP, DEMETER, ROCSAT, IEPI, Ion density, Irregularity
  • An OSSE shows FORMOSAT-5/AIP detecting ionospheric plasma irregularities
  • FORMOSAT-5/AIP probes global nighttime and daytime plasma irregularities
  • The irregularity probability of high inclination satellites should be reconsidered

In this paper, the ion density probed by IAP (Instrument d’Analyse du Plasma) on board the DEMETER (Detection of Electro-Magnetic Emissions Transmitted from Earthquake Regions) satellite is used to find whether the science payload of advanced ionospheric probe (AIP) on board FORMOSAT-5 can be employed to observe space weather of ionospheric plasma irregularities. It is found that the low-latitude irregularities within ±15°dip latitudes of the DEMETER/IAP ion density are nighttime phenomena, and become prominent in South America–Central Africa sector almost all the year round, especially during May-August. The high-latitude irregularities of the DEMETER/IAP ion density appear around ±65° dip latitude worldwide in both daytime and nighttime, and become very intense in the winter and equinox month/hemisphere. Results of DEMETER/IAP show that FORMOSAT-5/AIP can be used to monitor space weather of ionospheric daytime/nighttime plasma irregularities in not only the low- but also high-latitude ionosphere.


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