Large‐Scale Traveling Atmospheric and Ionospheric Disturbances Observed in GUVI With Multi‐Instrument Validations

Bossert, Katrina; Paxton, L. J.; Matsuo, Tomoko; Гончаренко, Л. П.; Kumari, Komal; Conde, M.

doi:10.1029/2022gl099901

Cited by 8 publications

(10 citation statements)

References 59 publications

(84 reference statements)

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“…Frissell et al (2016) concluded that polar atmospheric processes, namely the polar vortex, rather than space weather activity are primarily responsible for controlling the occurrence of high-latitude and midlatitude winter daytime medium-scale TIDs (MSTIDs). This paper has been frequently cited to justify suggestions of polar vortex as a source of the observed MSTIDs (Bossert et al, 2021;Becker et al, 2022;Goncharenko et al, 2022). Bossert et al (2021) studied gravity waves generated by stratospheric vortex on January 8, 2013, which they suggested had caused TIDs observed by PFISR in Poker Flat, Alaska.…”

Section: Introductionmentioning

confidence: 99%

Observations of traveling ionospheric disturbances driven by gravity waves from sources in the upper and lower atmosphere

Prikryl,

Themens,

Chum

et al. 2024

Preprint

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Abstract. Traveling ionospheric disturbances (TIDs) are observed by the Super Dual Auroral Radar Network (SuperDARN), the Poker Flat Incoherent Scatter Radar (PFISR), the multipoint and multifrequency continuous Doppler sounders, and the GNSS total electron content (TEC) mapping technique. PFISR measures electron density altitude profiles, from which TIDs are obtained by a filtering method to remove background densities. SuperDARN observes the ionospheric convection at high latitudes and TIDs modulating the ground scatter power. The Doppler sounders at mid latitudes can determine TID propagation velocities and azimuths. The aim of this study is to attribute the observed TIDs to atmospheric gravity waves generated in the lower thermosphere at high latitudes, or gravity waves generated by mid-latitude tropospheric weather systems. The solar wind-magnetosphere-ionosphere-thermosphere coupling modulates the dayside ionospheric convection and currents that generate gravity waves driving equatorward propagating medium to large scale TIDs. The horizontal equivalent ionospheric currents are estimated from the ground-based magnetometer data using an inversion technique. At high latitudes, TIDs observed in the detrended TEC maps are dominated by equatorward TIDs pointing to auroral sources. At mid to low latitudes, the azimuths of TIDs vary, indicating sources in the troposphere. The cases of eastward to southeastward propagating TIDs that are observed in the detrended TEC maps and by the HF Doppler sounders in Czechia are attributed to gravity waves that were likely generated by geostrophic adjustment processes and shear instability in the intensifying low-pressure systems.

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Section: Introductionmentioning

confidence: 99%

Observations of traveling ionospheric disturbances driven by gravity waves from sources in the upper and lower atmosphere

Prikryl,

Themens,

Chum

et al. 2024

Preprint

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“…Analysis of Dynamic Explorer (DE 2) data yielded observations of wavelike fluctuations, only in the high‐latitude regions (Innis & Conde, 2002). The Global Ultraviolet Imager (GUVI) instrument onboard the Thermosphere Ionosphere Mesosphere Energetics and Dynamics satellite has recently been used to identify GWs/LSTIDs/Large Scale TADs (LSTADs) and link them to observations by ground‐based interferometers and radars; however the GUVI observations are from below 625 km (Bossert et al., 2022). Sounding from satellites above the F‐peak is possible and Gross (1985) compared topside sounding observations to in‐situ ionization density measurements suggesting that perturbations follow flux tubes vertically, but was not able to prove if the perturbations seen were traveling or stationary.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Large Scale Traveling Atmospheric/Ionospheric Disturbances Using the Coupled SAMI3 and GITM Models

Bukowski,

Ridley,

Huba

et al. 2024

Geophysical Research Letters

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We present simulation results of the vertical structure of Large Scale Traveling Ionospheric Disturbances (LSTIDs) during synthetic geomagnetic storms. These data are produced using a one‐way coupled SAMI3/Global Ionosphere Thermosphere Model (GITM) model, where GITM provides thermospheric information to SAMI3 (SAMI3 is Another Model of the Ionosphere), producing LSTIDs. We show simulation results which demonstrate that the traveling atmospheric disturbances (TADs) generated in GITM extend to the topside ionosphere in SAMI3 as LSTIDs. The speed and wavelength (600–700 m/s and 10º–20° latitude) are consistent with LSTID observations in storms of similar magnitudes. We demonstrate the LSTIDs reach altitudes beyond the topside ionosphere with amplitudes of <5% over background which will facilitate the use of plasma measurements from the topside ionosphere to supplement measurements from Global Navigation Satellite System in the study of Traveling Ionospheric Disturbances (TIDs). Additionally, we demonstrate the dependence of the characteristics of these TADs and TIDs on longitude.

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“…Analysis of Dynamic Explorer (DE 2) data yielded observations of wavelike fluctuations, only in the high-latitude regions (Innis & Conde, 2002). The Global Ultraviolet Imager (GUVI) instrument onboard the Thermosphere Ionosphere Mesosphere Energetics and Dynamics (TIMED) satellite has recently been used to identify GWs/LSTIDs/LSTADs and link them to observations by ground-based interferometers and radars; however, these observations do not extend into the topside ionosphere (Bossert et al, 2022). Sounding from satellites above the F-peak is possible and Gross (1985) compared topside sounding observations to in-situ ionization density measurements suggesting that perturbations follow flux tubes vertically, but was not able to prove if the perturbations seen were travelling or stationary.…”

Section: Introductionmentioning

confidence: 99%

Investigation of Large Scale Traveling Atmospheric/Ionospheric Disturbances using the Coupled SAMI3 and GITM Models

Bukowski,

Ridley,

Huba

et al. 2023

Preprint

View full text Add to dashboard Cite

We present simulation results of the vertical structure of Large Scale Traveling Ionospheric Disturbances (LSTIDs) during synthetic geomagnetic storms. These data are produced using a one-way coupled SAMI3/GITM model, where GITM (Global Ionosphere Thermosphere Model) provides thermospheric information to SAMI3 (SAMI3 is Another Model of the Ionosphere), allowing the production and propagation of LSTIDs. We show simulation results which demonstrate that the traveling atmospheric disturbances (TADs) generated in GITM propagate to the topside ionosphere in SAMI3 as LSTIDs. The speed and wavelength (900 m/s and 10º-20º latitude) are consistent with LSTID observations in storms of similar magnitudes. We demonstrate the LSTIDs reach altitudes beyond the topside ionosphere with amplitudes of <5% over background which will facilitate the use of plasma measurements from the topside ionosphere to supplement measurements from GNSS in the study of TIDs. Additionally, we demonstrate the dependence of the characteristics of these TADs and TIDs on longitude.

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Large‐Scale Traveling Atmospheric and Ionospheric Disturbances Observed in GUVI With Multi‐Instrument Validations

Cited by 8 publications

References 59 publications

Observations of traveling ionospheric disturbances driven by gravity waves from sources in the upper and lower atmosphere

Observations of traveling ionospheric disturbances driven by gravity waves from sources in the upper and lower atmosphere

Investigation of Large Scale Traveling Atmospheric/Ionospheric Disturbances Using the Coupled SAMI3 and GITM Models

Investigation of Large Scale Traveling Atmospheric/Ionospheric Disturbances using the Coupled SAMI3 and GITM Models

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