Articles | Volume 21
https://doi.org/10.5194/asr-21-1-2024
https://doi.org/10.5194/asr-21-1-2024
15 Jul 2024
 | 15 Jul 2024

Mesoscale weather influenced by auroral gravity waves contributing to conditional symmetric instability release?

Paul Prikryl

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Cited articles

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Burlaga, L., Sittler, E., Mariani, F., and Schwenn, R.: Magnetic loop behind an interplanetary shock: Voyager, Helios, and IMP 8 observations, J. Geophys. Res., 86, 6673–6684, https://doi.org/10.1029/JA086iA08p06673, 1981. 
Chen, T.-C., Yau, M. K., and Kirshbaum, D. J.: Assessment of conditional symmetric instability from global reanalysis data, J. Atmos. Sci., 75, 2425–2443, https://doi.org/10.1175/JAS-D-17-0221.1, 2018. 
Chen, T.-C., Di Luca, A., Winger, K., Laprise, R., and Thériault, J. M.: Seasonality of continental extratropical-cyclone wind speeds over northeastern North America, Geophys. Res. Lett., 49, e2022GL098776, https://doi.org/10.1029/2022GL098776, 2022a. 
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Short summary
We consider possible influence on severe weather occurrence by aurorally excited atmospheric gravity waves generated by solar wind coupling to the magnetosphere-ionosphere-atmosphere system. The results indicate that these gravity waves contribute to the release of instabilities in frontal zones of extratropical cyclones leading to convection and heavy precipitation. It is observed that severe snowstorms and flash floods tend to occur following arrivals of solar wind high-speed streams.