Derivation of global ionospheric Sporadic E critical frequency (foEs) data from the amplitude variations in GPS/GNSS radio occultations [PDF]
Royal Society Open Science, 2020 The ionospheric sporadic E (Es) layer has a significant impact on the global positioning system (GPS)/global navigation satellite system (GNSS) signals. These influences on the GPS/GNSS signals can also be used to study the occurrence and characteristics
Bingkun Yu +4 more
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The role of total wind in the vertical dynamics of ions in the E-region at high latitudes [PDF]
Annales Geophysicae, 2005 A seasonally dependent total neutral wind model obtained from experimental data is used to evaluate the diurnal variation of the vertical ion velocity in the E-region at a high-latitude location (Tromsø), for each season, in the presence of an ...
M. Voiculescu, M. Ignat
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Mid-latitude E-region bulk motions inferred from digital ionosonde and HF radar measurements [PDF]
Annales Geophysicae, 2004 In the mid-latitude E-region there is now evidence suggesting that neutral winds play a significant role in driving the local plasma instabilities and electrodynamics inside sporadicE layers.
G. C. Hussey +4 more
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The lunar tide in sporadic E [PDF]
Annales Geophysicae, 1999 It seems that the wind shear theory is accepted for the explanation of sporadic E at mid and low latitudes. Some examples from Arecibo are displayed to show this.
R. J. Stening
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Visualizing sporadic E using aeronautical navigation signals at VHF frequencies
Journal of Space Weather and Space Climate, 2021 To understand the dynamical properties of sporadic E layer (Es), we have developed a method to visualize the two-dimensional spatial structure of Es by monitoring the occurrence of anomalous propagation of VHF waves used for aeronautical navigation ...
Hosokawa Keisuke +7 more
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High‐Resolution 3‐D Imaging of Daytime Sporadic‐E Over Japan by Using GNSS TEC and Ionosondes
Space Weather, 2021 A novel two‐step three‐dimensional (3‐D) computerized ionospheric tomography (CIT) technique has been developed to image the structure of daytime midlatitude sporadic‐E (Es). The CIT relies on total electron content (TEC) from a dense ground‐based Global
Weizheng Fu +3 more
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Impacts of Kelvin-Helmholtz billow formation on GNSS radio occultation measurements of sporadic-E
Frontiers in Astronomy and Space Sciences, 2023 Global Navigation Satellite System (GNSS) Radio Occultation (RO) has shown great promise for monitoring sporadic-E layers. However, extracting sporadic-E information from RO signals remains a difficult task due to the many unknown parameters such as ...
Andrew J. Knisely, Daniel J. Emmons
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Numerical prediction of sporadic E layer occurrence using GAIA
Earth, Planets and Space, 2021 A sporadic E layer has significant influence on radio communications and broadcasting, and predicting the occurrence of sporadic E layers is one of the most important issues in space weather forecast.
Hiroyuki Shinagawa +4 more
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Formation of Multilayered Sporadic E under an Influence of Atmospheric Gravity Waves (AGWs)
Atmosphere, 2020 The formation of multilayered sporadic E by atmospheric gravity waves (AGWs), propagating in the mid-latitude lower thermosphere, is shown theoretically and numerically.
Goderdzi G. Didebulidze +2 more
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Comparison of Seasonal foEs and fbEs Occurrence Rates Derived from Global Digisonde Measurements
Atmosphere, 2021 A global climatology of sporadic-E occurrence rates (ORs) based on ionosonde measurements is presented for the peak blanketing frequency, fbEs, and the ordinary mode peak frequency of the layer, foEs.
Dawn K. Merriman +3 more
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