Results 11 to 20 of about 12,606 (256)

A Methodology of Retrieving Volume Emission Rate from Limb-Viewed Airglow Emission Intensity by Combining the Techniques of Abel Inversion and Deep Learning

Atmosphere, 2022
The conversion of airglow intensity to volume emission rate (VER) is a common method for studying the ionosphere, but the contribution of the intensity conversion process to the uncertainty in estimated electron or ion density is significant.
Yi Duann, Loren C. Chang, Chi-Yen Lin, Yueh-Chun Hsieh, Yun-Cheng Wen, Charles C. H. Lin, Jann-Yenq Liu   +6 more
doaj   +1 more source

Development of low-cost multi-wavelength imager system for studies of aurora and airglow [PDF]

, 2020
This paper introduces a new system that can monitor aurora and atmospheric airglow using a low-cost Watec monochromatic imager (WMI) equipped with a sensitive camera, a filter with high transmittance, and the non-telecentric optics.
Brändström, U., Ebihara, Y., Fujii, R., Gerrard, A., Gustavsson, B., Hall, C., Hosokawa, K., Kadokura, A., Kauristie, K., Kosch, M., Miyaoka, H., Miyoshi, Y., Motoba, T., Nozawa, S., Ogawa, Y., Oyama, S., Ozaki, M., Raita, T., Sato, Y., Shiokawa, K., Sigernes, F., Suzuki, S., Tanaka, Y.   +22 more
core   +2 more sources

Trends in the Airglow Temperatures in the MLT Region—Part 1: Model Simulations

Atmosphere, 2020
Airglow intensity-weighted temperature variations induced by the CO2 increase, solar cycle variation (F10.7 as a proxy) and geomagnetic activity (Ap index as a proxy) in the Mesosphere and Lower Thermosphere (MLT) region were simulated to quantitatively ...
Tai-Yin Huang, Michael Vanyo
doaj   +1 more source

The first coordinated observations of mid-latitude E-region quasi-periodic radar echoes and lower thermospheric 557.7-nm airglow [PDF]

Annales Geophysicae, 2005
We present the first coordinated observations of quasi-periodic (QP) radar echoes from sporadic-E (Es) field-aligned irregularities (FAIs), OI 557.7-nm airglow, and neutral winds in a common volume over Shigaraki, Japan (34.9° N, 136.1° E) on the ...
T. Ogawa, Y. Otsuka, F. Onoma, K. Shiokawa, M. Yamamoto   +4 more
doaj   +1 more source

Simulation and analysis of radiant intensity for critical [PDF]

E3S Web of Conferences
Atmospheric oxygen A-band (759-767nm) airglow has strong radiation intensity in the visible band, and the global atmospheric temperature field can be obtained based on the oxygen A-spectrum line.
Li Shaoze, Si Fuqi
doaj   +1 more source

All-Sky Imager Observations of the Latitudinal Extent and Zonal Motion of Magnetically Conjugate 630.0 nm Airglow Depletions

Atmosphere, 2020
630.0 nm all-sky imaging data are used to detect airglow depletions associated with equatorial spread F. Pairs of imagers located at geomagnetically conjugate locations in the American sector at low and mid-latitudes provide information on the occurrence
Carlos Martinis, Dustin Hickey, Joei Wroten, Jeffrey Baumgardner, Rebecca Macinnis, Caity Sullivan, Santiago Padilla   +6 more
doaj   +1 more source

The observation of chemiluminescent NiO* emissions in the laboratory and in the night airglow [PDF]

Atmospheric Chemistry and Physics, 2011
The recent finding of an orange spectral feature in OSIRIS/Odin spectra of the night airglow near 87 km has raised interest in the origin of the emission.
W. F. J. Evans, R. L. Gattinger, A. L. Broadfoot, E. J. Llewellyn   +3 more
doaj   +1 more source

Observations of the Near-infrared Spectrum of the Zodiacal Light with CIBER [PDF]

, 2010
Interplanetary dust (IPD) scatters solar radiation which results in the zodiacal light that dominates the celestial diffuse brightness at optical and near-infrared wavelengths.
Battle, J., Bock, J., Cooray, A., Hristov, V., Keating, B., Lee, D. H., Levenson, L. R., Mason, P., Matsumoto, T., Matsuura, S., Nam, U. W., Renbarger, T., Sullivan, I., Suzuki, K., Tsumura, K., Wada, T., Zemcov, M.   +16 more
core   +1 more source

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, Dmitry S. Shaposhnikov, Alexander S. Medvedev, Gerd Reinhold Sonnemann, Paul Hartogh   +4 more
doaj   +1 more source

A simulation study of 630 nm and 557.7 nm airglow variations due to dissociative recombination and thermal electrons by high-power HF heating

Earth and Planetary Physics, 2017
One of the important effects of the ionospheric modification by high-power waves is the airglow enhancement. Both the thermal electrons and the dissociation recombination contribute to generate the airglow emissions during HF heating.
Tong Dang, JiuHou Lei, XianKang Dou, WeiXing Wan   +3 more
doaj   +1 more source