@article{3ca6611414974ba781247927a9d0ee49,
title = "Atmospheric Gravity Waves Observed in the Nightglow Following the 21 August 2017 Total Solar Eclipse",
abstract = "Nighttime airglow images observed at the low-latitude site of S{\~a}o Jo{\~a}o do Cariri (7.4°S, 36.5°W) showed the presence of a medium-scale atmospheric gravity wave (AGW) associated with the 21 August 2017 total solar eclipse. The AGW had a horizontal wavelength of ∼1,618 km, observed period of ∼152 min, and propagation direction of ∼200° clockwise from the north. The spectral characteristics of this wave are in good agreement with theoretical predictions for waves generated by eclipses. Additionally, the wave was reverse ray-traced, and the results show its path crossing the Moon's shadow of the total solar eclipse in the tropical North Atlantic ocean at stratospheric altitudes. Investigation about potential driving sources for this wave indicates the total solar eclipse as the most likely candidate. The optical measurements were part of an observational campaign carried out to detect the impact of the August 21 eclipse in the atmosphere at low latitudes.",
keywords = "airglow, gravity wave, ray tracing, solar eclipse",
author = "I. Paulino and Figueiredo, \{C. A.O.B.\} and Rodrigues, \{F. S.\} and Buriti, \{R. A.\} and Wrasse, \{C. M.\} and Paulino, \{A. R.\} and D. Barros and H. Takahashi and Batista, \{I. S.\} and Medeiros, \{A. F.\} and Batista, \{P. P.\} and Abdu, \{M. A.\} and \{de Paula\}, \{E. R.\} and Denardini, \{C. M.\} and Lima, \{L. M.\} and Cueva, \{R. Y.C.\} and Makela, \{J. J.\}",
note = "Airglow images from S{\~a}o Jo{\~a}o do Cariri can be accessed online in the portal of the “Estudo e Monitoramento Brasileiro do Clima Espacial” (EMBRACE/INPE) at a website ( www.inpe.br/spaceweather/ ). The cloud top brightness temperature maps were provided by the Center for Weather Forecasting and Climate Studies (CPTEC/INPE) at a website ( https://satelite.cptec.inpe.br/acervo ). Ray‐tracing calculations have been uploaded at a website ( https://doi.org/10.6084/m9.figshare.12707900 ). I. Paulino, C. M. Wrasse, A. R. Paulino, E. R. de Paula, C. M. Denardini, I. S. Batista, and D. Barros thank the Conselho Nacional de Desenvolvimento Cient{\'i}fico e Tecnol{\'o}gico (CNPq) for the support under contracts 303511/2017‐6, 307653/2017‐0, 460624/2014‐8, 202531/2019‐0, 303643/2017‐0, 306844/2019‐2, and 300974/2020‐5. I. Paulino, A. F. Medeiros, A. R. Paulino, R. A. Buriti, P. Batista, and C. M. Denardini thank the Funda{\c c}{\~a}o de Amparo {\`a} Pesquisa do Estado da Para{\'i}ba by the PRONEX grant (Termo de Concess{\~a}o e Aceita{\c c}{\~a}o Financeira 002/2019). A. R. Paulino thanks the Coordena{\c c}{\~a}o de Aperfei{\c c}oamento de Pessoal de N{\'i}vel Superior (CAPES) for the scholarship. F. S. Rodrigues would like to thank for the support from NSF (Award AGS‐1915925). C. A. O. B. Figueiredo thanks the Funda{\c c}{\~a}o de Amparo {\`a} Pesquisa do Estado de S{\~a}o Paulo (FAPESP) for kindly providing financial support through the process number 2018/09066‐8. Work at Illinois was supported by NSF grant AGS 16‐51298.",
year = "2020",
month = sep,
day = "16",
doi = "10.1029/2020GL088924",
language = "English (US)",
volume = "47",
journal = "Geophysical Research Letters",
issn = "0094-8276",
publisher = "John Wiley \& Sons, Ltd.",
number = "17",
}