Results 1 to 10 of about 9,606 (191)

Hydroxyl airglow observations for investigating atmospheric dynamics: results and challenges [PDF]

Atmospheric Chemistry and Physics, 2023
Measurements of hydroxyl (OH*) airglow intensity are a straightforward and cost-efficient method which allows the derivation of information about the climate and dynamics of the upper mesosphere/lower thermosphere (UMLT) on different spatiotemporal ...
S. Wüst, M. Bittner, M. Bittner, P. J. Espy, W. J. R. French, F. J. Mulligan   +5 more
doaj   +1 more source

A case study of a ducted gravity wave event over northern Germany using simultaneous airglow imaging and wind-field observations [PDF]

Annales Geophysicae, 2022
An intriguing and rare gravity wave event was recorded on the night of 25 April 2017 using a multiwavelength all-sky airglow imager over northern Germany.
S. Sarkhel, G. Stober, G. Stober, G. Stober, J. L. Chau, S. M. Smith, C. Jacobi, S. Mondal, M. G. Mlynczak, J. M. Russell III   +9 more
doaj   +1 more source

Object Recognition of Atmospheric Gravity Wave Based on Foundation Airglow Images [PDF]

Jisuanji gongcheng, 2023
With the construction of the Meridian Project all-sky airglow imager observation network, a large amount of raw airglow image data has been accumulated. The current atmospheric gravity wave research based on airglow observation is extremely dependent on ...
Jinsheng CHEN, Wenzhen MA, Shaofeng FANG, Ziming ZOU
doaj   +1 more source

Analysis of Airglow Image Classification Based on Feature Map Visualization

Applied Sciences, 2023
All-sky airglow imagers (ASAIs) are used in the Meridian Project to observe the airglow in the middle and upper atmosphere to study the atmospheric perturbation.
Zhishuang Lin, Qianyu Wang, Chang Lai
doaj   +1 more source

Special Issue Editorial: Atmospheric Airglow—Recent Advances in Observations, Experimentations, and Modeling

Atmosphere, 2021
Airglow observations, experimentations, and theoretical studies have significantly advanced our understanding of airglow in recent decades [...]
Tai-Yin Huang
doaj   +1 more source

Case study of an Equatorial Plasma Bubble Event investigated by multiple ground-based instruments at low latitudes over China

Earth and Planetary Physics, 2021
Observational evidence is insufficient to understand how equatorial plasma bubbles (EPBs) form over low latitudes. The mechanism of plasma-density enhancement (formation of “plasma blobs”) at low latitudes is in dispute.
LongChang Sun, JiYao Xu, YaJun Zhu, Wei Yuan, XiuKuan Zhao   +4 more
doaj   +1 more source

Historical line of airglow observations at Comandante Ferraz Brazilian Station: measurements of temperature and studies on gravity waves

Anais da Academia Brasileira de Ciências, 2023
The thermal dynamics of the upper atmosphere, especially in the mesosphere, have been improving our understanding about the effects of climate change, as well as how the dynamics and general circulation in the upper atmosphere are driven by different ...
JOSÉ VALENTIN BAGESTON, CRISTIANO MAX WRASSE, GABRIEL AUGUSTO GIONGO, EMÍLIA CORREIA, COSME ALEXANDRE O.B. FIGUEIREDO, DELANO GOBBI, HISAO TAKAHASHI, PAULO P. BATISTA, RICARDO A.B. DA COSTA   +8 more
doaj   +1 more source

Disentangling Stellar and Airglow Emission Lines from Hubble Space Telescope (HST) Cosmic Origins Spectrograph (COS) Spectra

The Astrophysical Journal, 2023
H i Ly α (1215.67 Å) and the O i triplet (1302.17, 1304.86, and 1306.03 Å) are bright far-ultraviolet (FUV) emission lines that trace the stellar chromosphere.
Fernando Cruz Aguirre, Allison Youngblood, Kevin France, Vincent Bourrier   +3 more
doaj   +1 more source

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