Results 11 to 20 of about 225 (104)

Analysis of Ionospheric Disturbances Near 120°E in the Asia‐Pacific Sector During the May 2024 Superstorm Using Multi‐Instrument Observations

Space Weather
On 10 May 2024, a severe G5 geomagnetic storm—the most intense of solar cycle 25—significantly disturbed the global ionosphere. This study presents a comprehensive analysis using multi‐instrument observations, including ground‐based measurements from BDS‐
Yue Sun, Jun Tang, Hanyang Teng, Chaoqian Xu, Liang Zhang   +4 more
doaj   +2 more sources

Vertical gradients of neutral winds observed by ICON and estimated by the Horizontal Wind Model during the geomagnetic storm on August 26−28, 2021 [PDF]

Earth and Planetary Physics
The Michelson Interferometer for Global High-resolution Thermospheric Imaging (MIGHTI) onboard the Ionospheric Connection Explorer (ICON) satellite offers the opportunity to investigate the altitude profile of thermospheric winds.
JiaWei Wu, Chao Xiong, YuYang Huang, YunLiang Zhou   +3 more
doaj   +3 more sources

Nocturnal Temperature and Wind Structures of the Mesosphere and Lower Thermosphere Region Over Yuzhong (36°N, 104.2°E) Based on Sodium Lidar Observation

Space Weather
We present an analysis of thermal and dynamical structures in the mesopause and lower thermosphere (MLT) region (82–106 km) using ∼1,870 hr of sodium (Na) lidar observations at Yuzhong (36.0°N, 104.2°E) from March 2023 to May 2025.
Linmei Liu, Yuan Xia, Yong Yang, Xuewu Cheng, Xin Lin, Kaijie Ji, Wei Wang, Jiaming Liang, Jinzhou Zheng, Guotao Yang, Faquan Li   +10 more
doaj   +2 more sources

HF Radar Observations and Modeling of the Impact of the 8 April 2024 Total Solar Eclipse on the Ionosphere-Thermosphere System [PDF]

Geophysical Research Letters, Volume 51, Issue 24, 28 December 2024.
The path of totality of the 8 April 2024 solar eclipse traversed the fields-of-view of four US SuperDARN radars. This rare scenario provided an excellent opportunity to monitor the large-scale ionospheric response to the eclipse.
Baker, J. B.H., Bristow, W. A., Chartier, A. T., Dao, E. V., Emmons, D. J., Farinas Perez, G., Holmes, J. M., Huba, J. D., Kunduri, B. S.R., Pandey, K., Perry, G. W., Ruohoniemi, J. M., Shepherd, S. G., Sterne, K. T., Themens, D. R., Thomas, E. G.   +15 more
core   +2 more sources

Line-of-Sight Winds and Doppler Effect Smearing in ACE-FTS Solar Occultation Measurements [PDF]

, 2021
Line-of-sight wind profiles are derived from Doppler shifts in infrared solar occultation measurements from the Atmospheric Chemistry Experiment Fourier transform spectrometers (ACE-FTS), the primary instrument on SCISAT, a satellite-based mission for ...
Bernath, Peter F., Boone, Chris D., Crouse, Jeff, Steffen, Johnathen   +3 more
core   +2 more sources

HL‐TWiM Empirical Model of High‐Latitude Upper Thermospheric Winds [PDF]

, 2019
We present an empirical model of thermospheric winds (High‐latitude Thermospheric Wind Model [HL‐TWiM]) that specifies F region high‐latitude horizontal neutral winds as a function of day of year, latitude, longitude, local time, and geomagnetic activity.
Aruliah, Anasuya, Conde, Mark G., Dhadly, Manbharat S., Doornbos, Eelco, Drob, Douglas P., Emmert, John T., Jee, Geonhwa, Lee, Changsup, Makela, Jonathan J., Niciejewski, Rick J., Ridley, Aaron J., Shepherd, Gordon G., Wu, Qian   +12 more
core   +4 more sources

Inferring neutral winds in the ionospheric transition region from atmospheric-gravity-wave traveling-ionospheric-disturbance (AGW-TID) observations with the EISCAT VHF radar and the Nordic Meteor Radar Cluster [PDF]

, 2023
Atmospheric gravity waves and traveling ionospheric disturbances can be observed in the neutral atmosphere and the ionosphere at a wide range of spatial and temporal scales.
Becker, Erich, Belova, Evgenia, Borries, Claudia, Gulbrandsen, Njål, Günzkofer, Florian, Kero, Johan, Kozlovsky, Alexander, Lester, Mark, Mann, Ingrid, Mitchell, Nicholas J., Nozawa, Satonori, Pokhotelov, Dimitry, Stober, Gunter, Tjulin, Anders, Tsutsumi, Masaki, Vadas, Sharon L.   +15 more
core   +6 more sources

Neutral winds and tides over South Africa [PDF]

, 2022
This thesis presents the first results of a climatology of nighttime thermospheric neutral winds between February 2018 and January 2019 measured by a Fabry-Perot interferometer (FPI) in Sutherland, South Africa (32.2°S, 20.48°E; geomagnetic latitude: 40 ...
Ojo, Taiwo Theophilus
core   +2 more sources

Climatology of thermospheric neutral winds over Oukaïmeden Observatory in Morocco [PDF]

Annales Geophysicae, 2017
In order to explore coupling between the thermosphere and ionosphere and to address the lack of data relating to thermospheric neutral winds and temperatures over the African sector, a new system of instruments was installed at the Oukaïmeden ...
M. Kaab, Z. Benkhaldoun, D. J. Fisher, B. Harding, A. Bounhir, J. J. Makela, A. Laghriyeb, K. Malki, A. Daassou, M. Lazrek   +9 more
doaj   +1 more source

Characterizing Unexpectedly Localized Slowing of the Thermospheric Cross‐Polar Jet of Neutral Wind Over Alaska in the Midnight Sector [PDF]

, 2021
NSF, GEO, Division of Atmospheric and Geospace Sciences (AGS).
Conde, M., Itani, R.
core   +1 more source