Results 1 to 10 of about 47,899 (167)
Thermospheric Neutral Wind Measurements and Investigations across the African Region—A Review
Atmosphere, 2022 This paper briefly reviews studies of thermospheric neutral wind dynamics over the African region. The literature includes a review of the observations of neutral winds over five African locations using the Fabry–Perot Interferometer (FPI), and the ...
Daniel Okoh +7 more
doaj +3 more sources
Atmosphere, 2019 This study presents a new method for determining a neutral wind velocity vector. The basis of the method is measurement of the group velocities of internal gravity waves.
Andrey V. Medvedev +4 more
doaj +3 more sources
Explaining Ionospheric Ion Upflow in the Subauroral Polarization Streams
Remote Sensing, 2022 Ionospheric ion upflow is an important process for magnetosphere-ionosphere coupling via O+ source for the magnetosphere. This process occurs frequently in the subauroral polarization stream (SAPS) region where the SAPS-enhanced ion-neutral frictional ...
Shuhan Li, Jing Liu, Qiaoling Li
doaj +1 more source
Neutral winds from mesosphere to thermosphere—past, present, and future outlook
Frontiers in Astronomy and Space Sciences, 2023 The Earth’s upper atmosphere (85–550 km) is the nearest region of geospace and is highly dynamic in nature. Neutral winds impact a large portion of the dynamics in this region.
Manbharat Dhadly +8 more
doaj +1 more source
Solar-Terrestrial Physics, 2022 Using the representative statistics on traveling ionospheric disturbances (TIDs) obtained by Yekaterinburg and Magadan radars, we have shown that distributions of TIDs and average TID velocities by azimuths and local time agree well with the hypothesis ...
Tolstikov M. V. +4 more
doaj +1 more source
Evaluation of Blended Wind Products and Their Implications for Offshore Wind Power Estimation
Remote Sensing, 2023 The Cross-Calibrated Multi-Platform (CCMP) wind analysis is a satellite-based blended wind product produced using a two-dimensional variational method. The current version available publicly is Version 2 (CCMP2.0), which includes buoy winds in addition ...
Xiaochun Wang, Tong Lee, Carl Mears
doaj +1 more source
Influence of Scattered Sunlight for Wind Measurements with the O2(a1Δg) Dayglow
Remote Sensing, 2022 Observing the O2(a1Δg) dayglow with the limb-viewing DASH instrument enables remote sensing of neutral wind in near space. Many advantages are gained by using this new approach, but the influence factors on measurement accuracy have not been thoroughly ...
Weiwei He +6 more
doaj +1 more source
Effects of atmospheric oscillations on the field-aligned ion motions in the polar F-region [PDF]
Annales Geophysicae, 2000 The field-aligned neutral oscillations in the F-region (altitudes between 165 and 275 km) were compared using data obtained simultaneously with two independent instruments: the European Incoherent Scatter (EISCAT) UHF radar and a scanning Fabry-Perot ...
S. Oyama +8 more
doaj +1 more source
Responses of the wintertime auroral E-region neutral wind to varying levels of geomagnetic activity
Frontiers in Astronomy and Space Sciences, 2023 Introduction: The auroral E-region is an important interface where forces from the magnetosphere and the lower atmosphere converge and have a significant effect on the vertical structure of the neutral winds. The resulting vertical neutral wind structure
Weijia Zhan +2 more
doaj +1 more source
Variations in the Equatorial Ionospheric F Region Current during the 2022 Tonga Volcanic Eruption
Remote Sensing, 2022 In this work, the temporal variations in the ionospheric F region current (FRC) during the 2022 volcanic eruption in Tonga are reported for the first time.
Hui Wang, Hao Xia, Kedeng Zhang
doaj +1 more source