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Found 14 entries in the Bibliography.
Showing entries from 1 through 14
2022 |
Validation of in-situ ionospheric density using FORMOSAT-7/COSMIC-2 IVM and ICON IVM We investigate the validation of in-situ ion density measurements by the ion velocity meter (IVM) onboard F7/C2 and ICON, respectively, during the solar minimum condition of Choi, Jong-Min; Lin, Charles; Rajesh, PK; Park, Jaeheung; Kwak, Young-Sil; Chen, Shih-Ping; Lin, Jia-Ting; Published by: Published on: YEAR: 2022   DOI: 10.21203/rs.3.rs-1758637/v1 |
A plasma density hole was created in the ionosphere by a rocket launch from Cape Canaveral, Florida near local sunset on 30 August 2020, which is called rocket exhaust depletion (RED). The hole persisted for several hours into the night and was observed in total electron content (TEC) maps, the Global-scale Observations of the Limb and Disk (GOLD) imager, and multiple low-earth-orbit satellites. The RED created a nightglow pit in the GOLD 135.6 nm image. Swarm satellites found that the RED exhibited insignificant changes in ... Park, Jaeheung; Rajesh, P.; Ivarsen, Magnus; Lin, Charles; Eastes, Richard; Chao, Chi; Coster, Anthea; Clausen, Lasse; Burchill, Johnathan; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2022   DOI: 10.1029/2021JA029909 GOLD; Madrigal TEC; COSMIC-2; Norsat-1; rocket exhaust depletion; swarm |
Retrospect and prospect of ionospheric weather observed by FORMOSAT-3/COSMIC and FORMOSAT-7/COSMIC-2 FORMOSAT-3/COSMIC (F3/C) constellation of six micro-satellites was launched into the circular low-earth orbit at 800 km altitude with a 72-degree inclination angle on 15 April 2006 Liu, Tiger; Lin, Charles; Lin, Chi-Yen; Lee, I-Te; Sun, Yang-Yi; Chen, Shih-Ping; Chang, Fu-Yuan; Rajesh, Panthalingal; Hsu, Chih-Ting; Matsuo, Tomoko; , others; Published by: Terrestrial, Atmospheric and Oceanic Sciences Published on: YEAR: 2022   DOI: 10.1007/s44195-022-00019-x |
2021 |
Near Real-Time Global Plasma Irregularity Monitoring by FORMOSAT-7/COSMIC-2 This study presents initial results of the ionospheric scintillation in the F layer using the S4 index derived from the radio occultation experiment (RO-S4) on FORMOSAT-7/COSMIC-2 (F7/C2). With the sufficiently dense RO-S4 observations at low latitudes, it is possible to construct hourly, global scintillation maps to monitor equatorial plasma bubbles (EPBs). The preliminary F7/C2 RO-S4 during August 2019 to April 2020 show clear scintillation distributions around American and the Atlantic Ocean longitudes. The RO-S4 near Jic ... Chen, Shih-Ping; Lin, Charles; Rajesh, Panthalingal; Liu, Jann-Yenq; Eastes, Richard; Chou, Min-Yang; Choi, Jong-Min; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2021   DOI: 10.1029/2020JA028339 equatorial plasma bubbles; FORMOSAT-7/COSMIC-2; global observation of limb and disk; GNSS scintillation; radio occultation; S4 index |
This study examines an unexpected and extreme positive ionospheric response to a minor magnetic storm on August 5, 2019 by using global ionosphere specification (GIS) 3D electron density profiles obtained by assimilating radio occultation total electron content (TEC) measurements of the recently launched FORMOSAT-7/COSMIC-2 satellites, and ground-based global navigation satellite system (GNSS) TEC. The results reveal ∼300\% enhancement of equatorial ionization anomaly (EIA) crests, appearing over 200–300 km altitudes, an ... Rajesh, P.; Lin, C.; . Y. Lin, C; Chen, C.; . Y. Liu, J; Matsuo, T.; Chen, S.; Yeh, W.; . Y. Huang, C; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2021   DOI: 10.1029/2020JA028261 FORMOSAT-7/COSMIC-2; Global Ionospheric Specification; ionospheric data assimilation; ionospheric response to magnetic storm; magnetosphere-ionosphere coupling; minor magnetic storm |
Implication of Tidal Forcing Effects on the Zonal Variation of Solstice Equatorial Plasma Bubbles Equatorial plasma bubbles (EPBs) are plasma depletions that can occur in the nighttime ionospheric F region, causing scintillation in satellite navigation and communications signals. Past research has shown that EPB occurrence rates are higher during the equinoxes in most longitude zones. An exception is over the central Pacific and African sectors, where EPB activity has been found to maximize during solstice. Tsunoda et al. (2015) hypothesized that the solstice maxima in these two sectors could be driven by a zonal wavenum ... Chang, Loren; Salinas, Cornelius; Chiu, Yi-Chung; , Jones; Rajesh, P.; Chao, Chi-Kuang; Liu, Jann-Yenq; Lin, Charles; Hsiao, Tung-Yuan; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2021   DOI: 10.1029/2020JA028295 Ionosphere; Atmospheric tides; equatorial plasma bubble; scintillation; vertical coupling; wind dynamo |
2020 |
Plasma depletion bays in the equatorial ionosphere observed by FORMOSAT-3/COSMIC during 2007--2014 A new feature of plasma depletion bay (PDB) on the longitudinal structure over the equatorial and low latitudes is observed by the FORMOSAT-3/COSMIC (F3/C) electron density profiles. The existence of the PDB feature is confirmed by the OI 135.6 nm radiance from TIMED/GUVI, which together with F3/C electron density shows that one North PDB extending to the Southern Hemisphere prominently appears over Southwest America while three South PDBs extending to the Northern Hemisphere occur over North Atlantic, India Ocean, and South ... Chang, FY; Liu, JY; Fang, TW; Rajesh, PK; Lin, CH; Published by: Journal of Geophysical Research: Space Physics Published on: YEAR: 2020   DOI: 10.1029/2019JA027501 |
2011 |
Ionospheric electron content and NmF2 from nighttime OI 135.6 nm intensity
Rajesh, P.; Liu, J; Hsu, M.; Lin, C.; Oyama, K.; Paxton, L.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011   DOI: 10.1029/2010JA015686 |
The O I 135.6 nm airglow observations of the midlatitude summer nighttime anomaly by TIMED/GUVI
Hsu, M.; Lin, C.; Hsu, R.; Liu, J; Paxton, L.; Su, H.; Tsai, H.; Rajesh, P.; Chen, C.; Published by: Journal of Geophysical Research Published on: Jan-01-2011 YEAR: 2011   DOI: 10.1029/2010JA016150 |
The OI 135.6 nm airglow observations of the midlatitude summer nighttime anomaly by TIMED/GUVI
Hsu, ML; Lin, CH; Hsu, RR; Liu, JY; Paxton, LJ; Su, HT; Tsai, HF; Rajesh, PK; Chen, CH; Published by: Journal of Geophysical Research: Space Physics Published on: |
2009 |
Ionospheric Electron Density Concurrently Derived by TIP and GOX of FORMOSAT-3/COSMIC. The tiny ion o spheric pho tom e ter (TIP) and GPS occultation ex per i ment (GOX) onboard FORMOSAT-3/COS MIC (F3/C) are em ployed to mea sure the OI 135.6 nm in ten si ties in Hsu, Mei-Lan; Rajesh, Panthalingal; Liu, Jann-Yenq; Tsai, Lung-Chih; Tsai, Ho-Fang; Lin, Chien-Hung; Dymond, Kenneth; Coker, Clayton; Chua, Damien; Budzien, Scott; , others; Published by: Terrestrial, Atmospheric \& Oceanic Sciences Published on: YEAR: 2009   DOI: 10.3319/TAO.2008.04.24.02(F3C) |
2008 |
The OI 135.6 nm Observations of the Weddell Sea Anomaly and the Nighttime Mid-Latitude Enhancement
Hsu, M; Liu, J; Lin, C; Tsai, H; Rajesh, P; Paxton, L; Hsu, R; Su, H; Published by: Published on: |
The structure of equatorial ionization anomaly seen by TIMED/GUVI limb observations
Lee, I; Liu, J; Rajesh, P; Lin, C; Published by: Published on: |
2006 |
Hsu, M; Liu, J; Lin, C; Tsai, H; Paxton, L; Rajesh, P; Published by: Published on: |
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