# Availability of nightglow ground observations for atmospheric dynamics monitoring

Christophe Bellisario, Pierre Simoneau, Sophie Derelle, Ewen Jaffré, Pierre-Yves Froissart, Philippe Keckhut, Alain Hauchecorne, Samuel Tremoulu, Fabrice Chane-Ming

<figure><img src="image_1.png" /></figure>

## To cite this version:

Christophe Bellisario, Pierre Simoneau, Sophie Derelle, Ewen Jaffré, Pierre-Yves Froissart, et al. Availability of nightglow ground observations for atmospheric dynamics monitoring. EGU General Assembly 2024, Apr 2024, Vienna, Austria. pp.EGU24-10208, 2024, 10.5194/egusphere-egu24-10208. insu-04515479

HAL Id: insu-04515479

https://insu.hal.science/insu-04515479

Submitted on 4 Jun 2024

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Distributed under a Creative Commons Attribution 4.0 International License
EGU24-10208, updated on 04 Jun 2024

https://doi.org/10.5194/egusphere-egu24-10208

EGU General Assembly 2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

<figure><img src="image_1.png" /></figure>

# Availability of nightglow ground observations for atmospheric dynamics monitoring

Christophe Bellisario<fnref n="1" />, Pierre Simoneau<fnref n="1" />, Sophie Derelle<fnref n="1" />, Ewen Jaffré<fnref n="1" />, Pierre-Yves Froissart<fnref n="1" />, Philippe Keckhut<fnref n="2" />, Alain Hauchecorne<fnref n="2" />, Samuel Tremoulu<fnref n="3" />, and Fabrice Chane-Ming<fnref n="3" />

The infrared emission lines observed between 80 and 100 km known as nightglow allow the investigation of dynamic phenomena such as gravity waves with adapted cameras. In particular, the OH nightglow emission peaking at 87 km can be observed with short wave infrared InGaAs cameras and most of studies use these observations to investigate dynamics at this height. In this study, we briefly describe the methodology to assess the availability of nightglow observations at ground level depending on the spectral bands and the local atmospheric conditions. The impact of clouds on the spectral radiance propagation is estimated by the use of radiative transfer models. Sensitivity tests are completed on clouds characteristics, such as vertical width or the type of clouds. In addition, we integrate directional fluxes on the celestial dome to assess the level of radiance available at the ground level for night vision imaging. Statistical temporal comparisons are performed using available observations campaigns at Observatory of Haute-Provence (OHP) and at Maïdo Observatory.

<footnote n="1">¹ONERA/DOTA, Chemin de la Hunière, 91123, Palaiseau, France (christophe.bellisario@onera.fr)</footnote>

<footnote n="2">²LATMOS-IPSL, CNRS/INSU, UMR 8190, Université Versailles St-Quentin, 78280 Guyancourt, France</footnote>

<footnote n="3">³LACy, CNRS/Météo-France, UMR 8105, Université de la Réunion, 97744 Saint-Denis de La Réunion, France</footnote>
EGU24-10208, updated on 04 Jun 2024

https://doi.org/10.5194/egusphere-egu24-10208

EGU General Assembly 2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

<figure><img src="image_3.png" /></figure>

# Availability of nightglow ground observations for atmospheric dynamics monitoring

Christophe Bellisario<fnref n="1" />, Pierre Simoneau<fnref n="1" />, Sophie Derelle<fnref n="1" />, Ewen Jaffré<fnref n="1" />, Pierre-Yves Froissart<fnref n="1" />, Philippe Keckhut<fnref n="2" />, Alain Hauchecorne<fnref n="2" />, Samuel Tremoulu<fnref n="3" />, and Fabrice Chane-Ming<fnref n="3" />

The infrared emission lines observed between 80 and 100 km known as nightglow allow the investigation of dynamic phenomena such as gravity waves with adapted cameras. In particular, the OH nightglow emission peaking at 87 km can be observed with short wave infrared InGaAs cameras and most of studies use these observations to investigate dynamics at this height. In this study, we briefly describe the methodology to assess the availability of nightglow observations at ground level depending on the spectral bands and the local atmospheric conditions. The impact of clouds on the spectral radiance propagation is estimated by the use of radiative transfer models. Sensitivity tests are completed on clouds characteristics, such as vertical width or the type of clouds. In addition, we integrate directional fluxes on the celestial dome to assess the level of radiance available at the ground level for night vision imaging. Statistical temporal comparisons are performed using available observations campaigns at Observatory of Haute-Provence (OHP) and at Maïdo Observatory.

<footnote n="1">¹ONERA/DOTA, Chemin de la Hunière, 91123, Palaiseau, France (christophe.bellisario@onera.fr)</footnote>

<footnote n="2">²LATMOS-IPSL, CNRS/INSU, UMR 8190, Université Versailles St-Quentin, 78280 Guyancourt, France</footnote>

<footnote n="3">³LACy, CNRS/Météo-France, UMR 8105, Université de la Réunion, 97744 Saint-Denis de La Réunion, France</footnote>