Results 51 to 60 of about 3,254 (234)

Gravity Wave Influences on MSTID Climatology Over CONUS: WACCM‐X Year‐Long Simulation and GNSS Long‐Term Observation

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Medium‐Scale Traveling Ionospheric Disturbances (MSTIDs) are prominent wave‐like structures in the ionosphere, with complex generation mechanisms involving both atmospheric gravity waves (GWs) and electrodynamic instabilities such as the Perkins instability (PI).
Jing Liu, Shun‐Rong Zhang, Hanli Liu, Anthea J. Coster, Philip J. Erickson   +4 more
wiley   +1 more source

Low latitude airglow

, 1983
Tropical airglow work during the last few years is reviewed. Airglow instrumentation is becoming more complex. Some of these sophisticated airglow experiments giving important information about the upper atmosphere such as ionospheric F region electron ...
Kulkarni, P. V.
core   +1 more source

Impacts of E‐Region Neutral Wind Shear on Equatorial Plasma Bubbles: SAMI3 Simulations Including Metal Ions

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract The vertical shear of horizontal neutral winds plays an important role in forming dense metallic layers in the E region. Previous studies suggest that metal ion layers may inhibit equatorial plasma bubble (EPB) development by enhancing E‐region Pedersen conductivity.
Minjing Li, Yue Deng, Joseph D. Huba, Zihan Wang   +3 more
wiley   +1 more source

Temporal Variability of Saturn's H2 Dayglow and Northern Aurora Observed by Hisaki and Cassini

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract Ultraviolet (UV) emissions from molecular hydrogen in Saturn's atmosphere consist of bright auroral emission over the poles and disk‐wide airglow. The dayside disk emits substantial intensities (dayglow) previously detected by various instruments.
L. S. Clare, S. V. Badman, T. Kimura, F. Tsuchiya, H. Tadokoro, C. Tao, Y. Kasaba, A. Bader, S. W. Farr, J. Kinrade, K. Yoshioka, A. Yamazaki, G. Murakami, I. Yoshikawa, H. Kita   +14 more
wiley   +1 more source

Daily Variability in the Terrestrial UV Airglow

Atmosphere, 2020
New capability for observing conditions in the upper atmosphere comes with the implementation of global ultraviolet (UV) imaging from geosynchronous orbit. Observed by the NASA GOLD mission, the emissions of atomic oxygen (OI) and molecular nitrogen (N2)
Thomas J. Immel, Richard W. Eastes, William E. McClintock, Steven B. Mende, Harald U. Frey, Colin Triplett, Scott L. England   +6 more
doaj   +1 more source

HIWIND Observation of Daytime Thermospheric Winds Over New Zealand and Comparison With Model Simulation

Journal of Geophysical Research: Space Physics, Volume 131, Issue 6, June 2026.
Abstract A balloon borne Fabry Perot interferometer called High altitude Interferometer WIND observation (HIWIND) flew from Wanaka, New Zealand (44.69S, 169.14E) in April 2025 to observe mid‐latitude thermospheric winds in the southern hemisphere for the first time.
Qian Wu, Haonan Wu, Wenbin Wang
wiley   +1 more source

Temporal evolution of pump beam self-focusing at the High-Frequency Active Auroral Research Program [PDF]

, 2007
On 4 February 2005 the High-Frequency Active Auroral Research Program (HAARP) facility was operated at 2.85 MHz to produce artificial optical emissions in the ionosphere while passing through the second electron gyroharmonic.
Gerken-Kendall, E., Pedersen, T., Kosch, Mike J., Mishin, E., Watkins, B., Starks, M., Oyama, S., Sentman, D.   +7 more
core  

The electron energy distribution during HF pumping, a picture painted with all colors [PDF]

, 2005
International audienceThe shape of the electron energy distribution has long been a central question in the field of high-frequency radio-induced optical emission experiments.
Rietveld, Michael T., Kosch, M.J., H. Holma, Aso, T., Grydeland, T., K. Kaila, P. Gallop, Gustavsson, B., Leyser, T.B., M. T. Rietveld, B. Isham, B. U. E. Brändström, Kaila, K., J. Jussila, Å. Steen, Steen, Å., Leyser, T. B., LaHoz, C., T. B. Leyser, Grydeland, Tom, Isham, B., Brändström, B.U.E., C. LaHoz, M. Ejiri, Sergienko, T., Rietveld, M. T., Ejiri, M., B. Gustavsson, Kosch, M. J., Gallop, P., M. J. Kosch, T. Aso, Brändström, B. U. E., La Hoz, Cesar, Jussila, J., Holma, H., T. Grydeland, T. Sergienko   +37 more
core   +1 more source

Scientific goals of optical instruments of the National Heliogeophysical Complex

Solar-Terrestrial Physics, 2020
Studies of the upper atmosphere have to be performed using optical photometric and spectrometric means. Modern devices allow precise photometry of the glow of the night atmosphere — airglow — with high temporal spatial and spectral resolution.
Vasilyev R.V., Artamonov M.F., Beletsky A.B., Zorkaltseva O.S., Komarova E.S., Medvedeva I.V., Mikhalev A.V., Podlesny S.V., Ratovsky K.G., Syrenova T.E., Tashchilin M.A., Tkachev I.D.   +11 more
doaj   +1 more source

Application of tomographic inversion in studying airglow in the mesopause region [PDF]

Annales Geophysicae, 1998
It is pointed out that observations of periodic nightglow structures give excellent information on atmospheric gravity waves in the mesosphere and lower thermosphere.
T. Nygrén, M. J. Taylor, M. S. Lehtinen, M. Markkanen   +3 more
doaj   +1 more source