Results 91 to 100 of about 11,342 (218)

Martian Thermospheric Warming Associated With the Planet Encircling Dust Event of 2018

Geophysical Research Letters, 2020
We report the first observations of Martian thermospheric warming associated with the Planet Encircling Dust Event (PEDE) of 2018. We used dayglow observations made by the Imaging Ultraviolet Spectrograph instrument aboard the MAVEN spacecraft to ...
S. K. Jain, S. W. Bougher, J. Deighan, N. M. Schneider, F. González Galindo, A. I. F. Stewart, R. Sharrar, D. Kass, J. Murphy, D. Pawlowski   +9 more
doaj   +1 more source

Productino of KSR-III Airglow Photometers to Measure MUV Airglows of the Upper Atmosphere Above the Korean Peninsular

Journal of Astronomy and Space Sciences, 2002
We have constructed two flight models of airglow photometer system (AGP) to be onboard Korea Sounding Rocket-III (KSR-III) for detection of MUV dayglow above the Korean peninsular.
T. H. Oh, K. C. Park, Y. H. Kim, Y. Yi, J. Kim   +4 more
doaj   +1 more source

Updates, Examples and Validation of the Global Ionosphere Thermosphere Model

Space Weather
This study provides an updated description, example simulations, and validation of the Global Ionosphere Thermosphere Model (GITM). The updates to GITM include using an exothermic semi‐implicit chemistry scheme that no longer requires an altitude ...
A. J. Ridley, C. Wu, A. Bukowski, J. Bell   +3 more
doaj   +1 more source

High-Latitude Ionosphere-Thermosphere Interactions [PDF]

, 2017
18th EISCAT symposium Session E3: Ionoshere/thermosphere/mesosphere May 27 (Sat), NIPR ...
Richmond, Arthur D.
core   +1 more source

Impact of Doubled CO2 on the Response of the Mesosphere, Thermosphere, and Ionosphere to the 2008–2009 Sudden Stratospheric Warming

Geophysical Research Letters
We investigate the impact of the 2008–2009 sudden stratospheric warming (SSW) event on the mesosphere, thermosphere, and ionosphere under conditions of doubled carbon dioxide (CO2).
Sunil Kumar, Jens Oberheide, B. C. Martinez   +2 more
doaj   +1 more source

Detection of wave activity in measurements of thermospheric vertical winds and temperatures at subauroral latitudes

Frontiers in Astronomy and Space Sciences
The need for high precision measurements of vertical winds with uncertainties on the scale of 3–5 m s−1 and a temporal cadence of 1–2 min to achieve detection of gravity wave (GW) structure has made it exceedingly difficult to study the response of the ...
Anneliese L. Schmidt, John W. Meriwether, Matthew B. Cooper, Andrew J. Gerrard, Lindsay V. Goodwin, Shun-Rong Zhang, Ying Ye   +6 more
doaj   +1 more source

The thermosphere at South Pole [PDF]

, 1998
P(論文)The Earth's thermosphere provides the first layer of atmosphere to filter the sun's optical radiation on its way to the surface. In addition, it absorbs most of the energetic particles swept up from interplanetary space and guided downwards along ...
Smith, Roger W., Hernandez, Gonzalo
core  

The dayside high-latitude trough under quiet geomagnetic conditions: Radio tomography and the CTIP model [PDF]

, 2005
International audienceThe dayside high-latitude trough is a persistent feature of the post-noon wintertime auroral ionosphere. Radio tomography observations have been used to map its location and latitudinal structure under quiet geomagnetic conditions ...
Dewis, K. L., Denton, M.H., Pryse, S. E., Balthazor, R. L., Middleton, H. R., Balthazor, R.L., H. R. Middleton, Dewis, K.L., R. L. Balthazor, Denton, M. H., S. E. Pryse, Pryse, S.E., Middleton, H.R., K. L. Dewis, M. H. Denton   +14 more
core   +2 more sources

Seasonal and Altitude Dependence of Thermospheric Metastable Helium Densities Measured by Fluorescence Lidar

Geophysical Research Letters
Airglow originating from metastable helium He(23S) at 1,083 nm has been used to study the upper thermosphere since its discovery in 1959, yielding insights into, for example, solar EUV intensities and thermospheric photoelectron densities.
C. Geach, B. Kaifler
doaj   +1 more source

The Martian Thermosphere/Ionosphere: Ancient and Modern

, 1999
We review our current understanding of the thermosphere and ionosphere of Mars at high and low solar activities, including density profiles of ions and minor neutral species, their variation with solar activity, and current and escape rates.
Fox, Jane L., Bougher, Stephen W.
core   +2 more sources