Results 61 to 70 of about 93,595 (201)

Tidal Variability in the Lower Thermosphere: Relative Importance of ENSO, QBO, PJO, MJO, and Lyα

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Atmospheric tides in the lower thermosphere play an important role in regulating upper‐atmospheric conditions relevant to space weather. However, their spatial and temporal variability remains poorly understood, apart from seasonal variations. Previous studies have shown that tides can be influenced by meteorological and solar conditions. This
Yosuke Yamazaki, Huixin Liu, Kaoru Sato, Dai Koshin, Claudia Stolle   +4 more
wiley   +1 more source

Daily Peak Activity of the African Lightning Chimney Based on Meteosat Third Generation (MTG) Lightning Imager (LI), World Wide Lightning Location Network (WWLLN), and Schumann Resonance (SR) Observations

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 20, 28 October 2026.
Abstract Lightning activity is strongly concentrated in tropical continental “chimneys”, among which the African lightning chimney stands out as the most intense globally. However, until recently, the incomplete and spatially uneven detection efficiency of ground‐based lightning networks, together with the limited spatio‐temporal coverage of satellite ...
K. Németh, E. Williams, Q. Wang, A. Neska, G. Sátori, M. Herein, T. Haszpra, P. Steinbach, T. Bozóki   +8 more
wiley   +1 more source

Evaluation of the Constant Momentum Mass Spectrometer for Ionospheric Investigations [PDF]

, 1966
Constant momentum mass spectrometer for ionospheric ...
Luther, H. M.
core  

An Innovative Approach for Estimating Coseismic Surface Uplifts Using Ionospheric Observations From Remote GNSS Stations: First Application for the 2025 Myanmar Earthquake

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract The Mw 7.7 Myanmar earthquake on 28 March 2025 ruptured ∼480 km of the Sagaing Fault. Its fault slip distribution remains poorly constrained by three‐dimensional surface displacement data due to sparse GNSS‐coverage near the fault. Satellite‐based synthetic aperture radars capture meters of right‐lateral displacements but isolating vertical ...
Mala S. Bagiya, Shubham K. Rajewar, Kosuke Heki, Vineet K. Gahalaut, Neeraj Gurjar, A. P. Dimri   +5 more
wiley   +1 more source

MARSIS Observations of the Martian Nightside Ionosphere During the September 2017 Solar Event

Geophysical Research Letters, 2018
We present topside ionospheric sounding on the nightside of Mars during the September 2017 solar event by Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) on board Mars Express along with complementary dayside observations from Mars ...
Y. Harada, D. A. Gurnett, A. J. Kopf, J. S. Halekas, S. Ruhunusiri, G. A. DiBraccio, J. Espley, D. A. Brain   +7 more
doaj   +1 more source

Detection and Analysis of an Upward Jet‐Like Electrical Discharge Intercepting a High‐Altitude Research Aircraft

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract During a 2023 field campaign, a NASA ER‐2 research aircraft intercepted an upward jet‐like electrical discharge at 20 km altitude over an intense tropical thunderstorm. This event was analyzed using airborne multispectral optical sensors, electric field mills, X‐band radar, passive microwave, and ground‐based radio networks.
T. J. Lang, A. Mezentsev, M. G. Quick, C. G. Amiot, M. Bateman, R. Blakeslee, S. Cummer, G. M. Heymsfield, R. A. Kroodsma, N. G. Lehtinen, D. Mach, M. Marisaldi, M. Walker McLinden, N. Østgaard, M. Pazos, D. A. S. Sarria, C. J. Schultz, T. D. Walker, O. van der Velde, K. Virts   +19 more
wiley   +1 more source

Mars' Magnetic Atmosphere: Ionospheric Currents, Lightning (or Not), E and M Subsurface Sounding, and Future Missions [PDF]

, 2014
Mars' ionosphere has no obvious magnetic signs of large-scale, dust~produced lightning. However, there are numerous interesting ionospheric currents (some associated with crustal magnetic fields) which would allow for E&M subsurface ...
Connerney, J. E. P., Espley, J. R.
core  

Ionospheric Sounding and Tomography by GNSS

, 2013
None
Vyacheslav Kunitsyn, Elena Andreeva, Ivan Nesterov, Artem Padokhin   +3 more
openaire   +3 more sources

Assessing Co‐Located NISAR and Sentinel‐1 Observations for Atmospheric Characterization

Journal of Geophysical Research: Atmospheres, Volume 131, Issue 19, 16 October 2026.
Abstract Tropospheric delay remains one of the largest sources of uncertainty in repeat‐pass Interferometric Synthetic Aperture Radar (InSAR) measurements, while accurate three‐dimensional deformation retrieval continues to be limited by the geometry of current spaceborne SAR systems.
Shadi Oveisgharan, Paul Rosen, Christopher Wells, Emre Havazli   +3 more
wiley   +1 more source

A flexible, low-cost, ionospheric sounding system

, 1996
An embedded ionospheric sounding facility [1] is used in conjunction with the HF propagation prediction program ICEPAC to identify the modal structure present on ionograms generated from oblique incidence ionospheric soundings.
Bartlett, A., Darnell, M., Gallagher, M.
core