Results 61 to 70 of about 4,801 (223)

Seasonal variations of O2 atmospheric and OH(6−2) airglowand temperature at mid-latitudes from SATI observations [PDF]

open access: yesAnnales Geophysicae, 2004
More than 3 years of airglow observations with a Spectral Airglow Temperature Imager (SATI) installed at the Sierra Nevada Observatory (37.06°N, 3.38°W) at 2900m height have been analyzed.
M. J. López-González   +10 more
doaj   +1 more source

Validation of Global Ionospheric Specification (GIS) Electron Density Measurements During Solar Minimum to Solar Maximum Under Quiet and Disturbed Geomagnetic Conditions

open access: yesSpace Weather, Volume 24, Issue 9, September 2026.
Abstract Global Ionospheric Specification (GIS) three‐dimensional electron density profiles constructed by assimilating the line‐of‐sight total electron content (TEC) from global navigation satellite system (GNSS) radio occultation (RO) measurements by FORMOSAT‐7/COSMIC‐2 (F7/C2) and ground‐based receiver network from international GNSS service ...
P. K. Rajesh   +7 more
wiley   +1 more source

Characteristics of spatial discontinuities in the lambda 5577 angstrom emission of atomic oxygen in airglow [PDF]

open access: yes, 1969
Electrophotometric observations on spatial discontinuities of green atomic oxygen line in airglow ...
Nasyrov, G. A.
core  

Temporal and latitudinal 5577 Å airglow variations

open access: yes, 1981
From 32 000 [O1] 5577 Å airglow limb observations made between April 1971 and December 1972 from the ISIS-2 satellite, the major temporal and spatial night airglow features have been identified.
J. S. Murphree   +2 more
core   +1 more source

U‐Net Based Machine Learning for Identification of Auroras in Space‐Based Images

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract We use a Semantic Segmentation based U‐Net model to predict the appearance of various classifications of aurora present in near‐infrared images from the Fast Auroral Imager (FAI) onboard the CASSIOPE satellite. We manually labeled pixels from a set of 4091 FAI near‐infrared images into 7 different classes: no aurora, contaminated, diffuse ...
Amit Kain   +4 more
wiley   +1 more source

Seasonal and interannual variations in the [OI] 630 nm atmospheric emission as derived from observations over Eastern Siberia in 2011–2017

open access: yesSolar-Terrestrial Physics, 2018
Seasonal and interannual variations in the [OI] 630 nm atmospheric emission are studied from observations of airglow in Eastern Siberia. Among features of seasonal variation in this emission are a pronounced summer maximum, an autumn minimum, and a ...
Mikhalev A.V.
doaj   +1 more source

Impacts of Neutral Wind‐Driven Currents on Geomagnetic Disturbances and Magnetospheric Dynamics During the May 2024 Storm

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 9, September 2026.
Abstract The neutral wind dynamo generates ionospheric currents that can significantly affect high‐latitude electrodynamics during geomagnetic storms, yet its role in global magnetosphere‐ionosphere coupling is often underrepresented. We quantify the impact of wind‐driven currents on geomagnetic disturbances (GMDs) and magnetospheric dynamics during ...
Yu Hong   +4 more
wiley   +1 more source

Airglow Studies in India [PDF]

open access: yes, 1987
84-101  Airglow radiations in different portions of the eletromagnetic spectrum have been studied in many aspects at middle and high latitude stations, from ground-based observations, rockets and satellites.
Agashe, V V
core  

Study on the Imaging Interference of a Vortex-Light-Modulated Gaussian Beam

open access: yesPhotonics
Combined with vortex light and airglow, some different physical phenomena are presented in this paper. Based on the ground-based airglow imaging interferometer (GBAII) made by our group, a liquid crystal on silicon (LCoS) device on one arm of a wide ...
Yanghe Liu   +6 more
doaj   +1 more source

Nightside Detection of a Large‐Scale Thermospheric Wave Generated by a Solar Eclipse

open access: yesGeophysical Research Letters, 2018
The generation of a large‐scale wave in the upper atmosphere caused by a solar eclipse was first predicted in the 1970s, but the experimental evidence remains sparse and comprises mostly indirect observations. This study presents observations of the wind
B. J. Harding   +3 more
doaj   +1 more source

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