Results 151 to 160 of about 166,316 (291)

Sudden Ionospheric Disturbances Generated by Solar Flares—Not so Sudden?

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract It is known that solar flares generate instantaneous ionization enhancement, referred to as sudden ionospheric disturbance (SID), that occurs simultaneously across the entire dayside. In this work, we use high‐rate 1‐s data of total electron content (TEC) to analyse ionospheric response to 13 solar flares that occurred in 2003–2023.
B. Maletckii   +3 more
wiley   +1 more source

A Stellar magnesium to silicon ratio in the atmosphere of an exoplanet. [PDF]

open access: yesNat Commun
Sanchez JA   +19 more
europepmc   +1 more source

Ground‐Based Microwave Measurements of ClO and O3 Over Scott Base, Antarctica

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract We present measurements from a new microwave instrument that has been deployed at Scott Base, Antarctica, primarily to measure ClO. The new instrument allows for the extension of the time series of lower stratospheric ClO measurements begun in 1996 at this site, while some of the technical improvements offer the possibility of making ...
Gerald E. Nedoluha   +11 more
wiley   +1 more source

Observations and Simulation of Thermospheric Composition Changes During the 14 October 2023 Solar Eclipse

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract This study presents a full‐period imaging of the thermospheric composition response to the 14 October 2023 annular solar eclipse, combining GOLD (Global‐scale Observations of the Limb and Disk) far‐ultraviolet observations with solar‐irradiance‐driven WACCM‐X (Whole Atmosphere Community Climate Model with thermosphere–ionosphere extension ...
Yu Jiao   +4 more
wiley   +1 more source

Increased and varied radiation during the Sun's encounters with cold clouds in the last 10 million years. [PDF]

open access: yesSci Rep
Opher M   +9 more
europepmc   +1 more source

Mars' Ionospheric Response to the Onset and Early Phase of 20 May 2024 Solar Flare

open access: yesGeophysical Research Letters, Volume 53, Issue 7, 16 April 2026.
Abstract Solar extreme ultraviolet (EUV, 10–100 nm) and X‐ray (<10 nm) photons are the primary ionization source for the dayside Mars ionosphere. Their fluxes, especially at short wavelengths, increase significantly during solar flares. Among the series of solar flares and solar storms encountered by Earth and Mars in May 2024, one of the strongest ...
Shaosui Xu   +10 more
wiley   +1 more source

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