Results 21 to 30 of about 4,644 (217)
Geophysical Research Letters, 2019 This paper reports a special midlatitudinal medium‐scale traveling ionospheric disturbance (MSTID) event, accompanied by a poleward surge of airglow depletion/enhancement and a bifurcation of depletion during the magnetically quiet period.
Longchang Sun +7 more
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Studying a Long-Lasting Meteor Trail from Stereo Images and Radar Data
Atmosphere, 2021 Unique observation of a long-lasting meteor trail of about half an hour duration is described. The trail resulted from a burning meteor from the Leonid storm flux in the middle latitudes over eastern Siberia.
Roman V. Vasilyev +6 more
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Extraction of Quasi-Monochromatic Gravity Waves from an Airglow Imager Network
Atmosphere, 2020 An algorithm has been developed to isolate the gravity waves (GWs) of different scales from airglow images. Based on the discrete wavelet transform, the images are decomposed and then reconstructed in a series of mutually orthogonal spaces, each of which
Chang Lai +6 more
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Earth and Space Science, 2023 Equatorial plasma bubbles (EPBs) are regions of depleted plasma within the ionosphere that form during post‐sunset hours near the magnetic equator. EPBs tend to align with local geomagnetic field lines, extend hundreds of kilometers along geomagnetic ...
V. J. Adkins, S. L. England
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Inversion of Wind and Temperature from Low SNR FPI Interferograms
Remote Sensing, 2023 The temperature and wind in the middle and upper atmosphere can be obtained by recording the Doppler shift and broadening of the airglow emission, which is reflected by the interference ring from a ground-based Fabry–Perot interferometer (FPI) system ...
Yafei Wei +6 more
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The global O2 airglow field as seen by the MATS satellite: strong equatorial maximum and planetary wave influence [PDF]
Atmospheric Chemistry and PhysicsThe Mesospheric Airglow/Aerosol Tomography and Spectroscopy (MATS) satellite was launched in November 2022, carrying as its main instrument a limb-viewing telescope with six spectral channels designed to image atmospheric O2 airglow and noctilucent ...
B. Linder +3 more
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Analysis of 2D airglow imager data with respect to dynamics using machine learning [PDF]
Atmospheric Measurement Techniques, 2023 We demonstrate how machine learning can be easily applied to support the analysis of large quantities of excited hydroxyl (OH*) airglow imager data. We use a TCN (temporal convolutional network) classification algorithm to automatically pre-sort images ...
R. Sedlak +7 more
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Nature, 1970 Atmospheric Emissions Edited by Billy M. McCormac and Anders Omholt. (Proceedings of the NATO Advanced Study Institute held at the Agricultural College of Norway, As, Norway, July 29–August 9, 1968.) Pp. xi + 563. (Van Nostrand Reinhold: New York and London, November 1969.) 234s.
openaire +2 more sources
Simplified Relations for the Martian Night-Time OH* Suitable for the Interpretation of Observations
Remote Sensing, 2022 Observations of excited hydroxyl (OH*) emissions are broadly used for inferring information about atmospheric dynamics and composition. We present several analytical approximations for characterizing the excited hydroxyl layer in the Martian atmosphere ...
Mykhaylo Grygalashvyly +4 more
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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 +6 more
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