Quasi-10&thinsp;d wave activity in the southern high-latitude mesosphere and lower thermosphere (MLT) region and its relation to large-scale instability and gravity wave drag

Lee, Wonseok; Song, In-Sun; Song, Byeong-Gwon; Kim, Yong Ha

doi:https://doi.org/10.5194/acp-24-3559-2024

Articles | Volume 24, issue 6

https://doi.org/10.5194/acp-24-3559-2024

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

https://doi.org/10.5194/acp-24-3559-2024

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

Articles | Volume 24, issue 6

Research article

|

21 Mar 2024

Research article |

| 21 Mar 2024

Quasi-10 d wave activity in the southern high-latitude mesosphere and lower thermosphere (MLT) region and its relation to large-scale instability and gravity wave drag

Wonseok Lee, In-Sun Song, Byeong-Gwon Song, and Yong Ha Kim

Supplement

https://doi.org/10.5194/acp-24-3559-2024-supplement

Data sets

Davis 33MHz Meteor Detection Radar Winds D. J. Murphy https://data.aad.gov.au/metadata/Davis_33MHz_Meteor_Radar

MLS/Aura Level 2 Temperature V005 M. Schwartz et al. https://doi.org/10.5067/Aura/MLS/DATA2520

MERRA2 Global Atmosphere Forcing Data National Center for Atmospheric Research/University Corporation for Atmospheric Research https://doi.org/10.5065/XVAQ-2X07

Neutral wind and temperature from Meteor Radar, King Sejong Station, Antarctica, 2012 Korea Polar Research Institute (KOPRI) https://doi.org/10.22663/KOPRI-KPDC-00000305.2

Neutral wind and temperature from Meteor Radar, King Sejong Station, Antarctica, 2013 Korea Polar Research Institute (KOPRI) https://doi.org/10.22663/KOPRI-KPDC-00001678.5

Neutral wind and temperature from Meteor Radar, King Sejong Station, Antarctica, 2014 Korea Polar Research Institute (KOPRI) https://doi.org/10.22663/KOPRI-KPDC-00000502.2

Neutral wind and temperature from Meteor Radar, King Sejong Station, Antarctica, 2015 Korea Polar Research Institute (KOPRI) https://doi.org/10.22663/KOPRI-KPDC-00000567.2

Neutral wind and temperature from Meteor Radar, King Sejong Station, Antarctica, 2016 Korea Polar Research Institute (KOPRI) https://doi.org/10.22663/KOPRI-KPDC-00000823.4

Model code and software

Community Earth System Model 2 National Center for Atmospheric Research https://www.cesm.ucar.edu/models/cesm2

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Short summary

We investigate the seasonal variation of westward-propagating quasi-10 d wave (Q10DW) activity in the southern high-latitude mesosphere. The observed Q10DW is amplified around equinoxes. The model experiments indicate that the Q10DW can be enhanced in the high-latitude mesosphere due to large-scale instability. However, an excessively strong instability in the summer mesosphere spuriously generates the Q10DW in the model, potentially leading to inaccurate model dynamics.