Results 51 to 60 of about 14,994 (266)

Can the International Reference Ionosphere Model Predict Long‐Term Trends in the Ionosphere?

Geophysical Research Letters, Volume 53, Issue 8, 28 April 2026.
Abstract The International Reference Ionosphere (IRI) model can partially reproduce ionospheric long‐term trends (LTTs), although not intentionally, provided that an appropriate effective ionospheric index is used. We evaluate how model predictions driven by a solar activity proxy (R12) and by an effective ionospheric proxy (IG12) can reproduce the ...
A. Pignalberi, M. Pietrella, T. Alberti, M. Pezzopane   +3 more
wiley   +1 more source

Spatial and Temporal Stability of Airglow Measured in the Meinel Band Window at 1191.3 nm [PDF]

, 2015
We report on the temporal and spatial fluctuations in the atmospheric brightness in the narrow band between Meinel emission lines at 1191.3 nm using an R=320 near-infrared instrument.
Battle, John, Bock, James J., Hristov, Viktor, Korngut, Philip, Meek, Andrew, Nguyen, Hien T., Zemcov, Michael   +6 more
core   +2 more sources

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

Geophysical 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, Jing Liu, Xuguang Cai, Joseph M. McInerney, Shuhan Li   +4 more
wiley   +1 more source

PALACE v1.0: Paranal Airglow Line And Continuum Emission model [PDF]

Geoscientific Model Development
Below about 2.3 µm, the nighttime emission of the Earth's atmosphere is dominated by non-thermal radiation. Excluding aurorae, the emission is caused by chemical reaction chains that are driven by the daytime photolysis and photoionisation of ...
S. Noll, S. Noll, S. Noll, C. Schmidt, P. Hannawald, W. Kausch, S. Kimeswenger, S. Kimeswenger   +7 more
doaj   +1 more source

A Far-Ultraviolet Spectroscopic Survey of Luminous Cool Stars

, 2004
FUSE ultraviolet spectra of 8 giant and supergiant stars reveal that high temperature (3 X 10^5 K) atmospheres are common in luminous cool stars and extend across the color-magnitude diagram from Alpha Car (F0 II) to the cool giant Alpha Tau (K5 III ...
A. K. Dupree, A. Lobel, Barnes T. G., Doyle J. G., Hartman H., Hunsch M., Hunsch M., Hunsch M., J. L. Linsky, Johnson H. L., Kaufman V., Marilli E., P. R. Young, Perryman M. A. C., Reimers D., Reimers D., Rutten R. G. M., S. Redfield, Schaller G., Strassmeier K. G., T. B. Ake, Teriaca L.   +21 more
core   +1 more source

Intrinsic parameters of periodic waves observed in the OI6300 airglow layer over the Brazilian equatorial region

, 2018
. Periodic waves were observed in the OI6300 airglow images over Sao Joao do Cariri (36.5 ∘  W, 7.4 ∘  S) from 2012 to 2014 with simultaneous observations of the thermospheric wind using two Fabry–Perot interferometers (FPIs).
I. Paulino, Joyrles Moraes, Gleuson L. Maranhão, C. Wrasse, R. Buriti, A. Medeiros, A. R. Paulino, H. Takahashi, J. Makela, J. Meriwether, Jose Andre V. Campos   +10 more
semanticscholar   +1 more source

Dataset of Quiet Space Weather Periods for Ionospheric Studies

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract The ionosphere is a dynamic environment regularly affected from above and from below. This study identifies periods within the years 2000–2023 when the impact from above, driven by space weather, was minimal. The quiet space weather periods have wide usage for two types of ionospheric studies. At first, studies of isolated space weather events
Šimon Mackovjak, Silvia Kostárová, Jaroslav Chum, Carsten Schmidt, Patrick Hannawald, Sabine Wüst, Lisa Küchelbacher, Vladimír Truhlík, Petra Koucká Knížová, Jaroslav Urbář, Lukáš Randuška, Filip Štempel, Ján Kubančák   +12 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

Solar-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

OH Airglow for Ionospheric Seismology Applications—From Instrumental Noise Characterization to Rayleigh Waves Detection Threshold

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract Airglow layers are powerful tracers of upper‐atmosphere dynamics because of their sensitivity to a broad spectrum of atmospheric wave phenomena. Seismic activity, and in particular Rayleigh waves, constitutes a forcing mechanism capable of generating infrasonic waves in the atmosphere.
P.‐Y. Froissart, P. Lognonné, P. Simoneau, K. Nishida, T. Ohminato   +4 more
wiley   +1 more source

Estimation of the vertical wavelength of atmospheric gravity waves from airglow imagery [PDF]

, 2011
In the summer of 2010, two imagers were installed in New Mexico with the objective of making stereoscopic observations of atmospheric gravity waves (AGWs).
Kanwar, Uday
core