Gravity Wave Activity During the 2024 Sudden Stratospheric Warmings Observed by Atmospheric Waves Experiment (AWE)
Abstract The National Aeronautics and Space Administration (NASA) Atmospheric Waves Experiment (AWE) instrument, launched in November 2023, provides direct observation of small‐scale (30–300 km) gravity waves (GWs) in the mesosphere on a global scale. This work examined changes in GW activity observ...
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| Format: | Article |
| Language: | English |
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Wiley
2025-04-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2024GL114187 |
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| _version_ | 1850272336834461696 |
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| author | Jiarong Zhang Yucheng Zhao Pierre‐Dominique Pautet Ludger Scherliess Michael J. Taylor Hanli Liu |
| author_facet | Jiarong Zhang Yucheng Zhao Pierre‐Dominique Pautet Ludger Scherliess Michael J. Taylor Hanli Liu |
| author_sort | Jiarong Zhang |
| collection | DOAJ |
| description | Abstract The National Aeronautics and Space Administration (NASA) Atmospheric Waves Experiment (AWE) instrument, launched in November 2023, provides direct observation of small‐scale (30–300 km) gravity waves (GWs) in the mesosphere on a global scale. This work examined changes in GW activity observed by AWE during two major Sudden Stratospheric Warmings (SSWs) in the 2023 and 2024 winter season. Northern Hemisphere (NH) midlatitude GW activity during these events shared similarities. Variations in mesospheric GW activity showed an evident correlation with the magnitude of zonal wind in the upper stratosphere. NH midlatitude GW activity at ∼87 km was reduced following the onset of SSWs, likely caused by wind filtering and wave saturation. The upward propagation of GWs was suppressed when the zonal wind reversed from eastward to westward in the upper stratosphere. In regions where the zonal wind weakened but remained eastward, the weakened GWs could be due to their refraction to shorter vertical wavelengths. |
| format | Article |
| id | doaj-art-da4ec7772ae848a2a7d704c476a3d244 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-da4ec7772ae848a2a7d704c476a3d2442025-08-20T01:51:50ZengWileyGeophysical Research Letters0094-82761944-80072025-04-01527n/an/a10.1029/2024GL114187Gravity Wave Activity During the 2024 Sudden Stratospheric Warmings Observed by Atmospheric Waves Experiment (AWE)Jiarong Zhang0Yucheng Zhao1Pierre‐Dominique Pautet2Ludger Scherliess3Michael J. Taylor4Hanli Liu5Department of Physics Utah State University Logan UT USADepartment of Physics Utah State University Logan UT USADepartment of Physics Utah State University Logan UT USADepartment of Physics Utah State University Logan UT USADepartment of Physics Utah State University Logan UT USAHigh Altitude Observatory NSF National Center for Atmospheric Research Boulder CO USAAbstract The National Aeronautics and Space Administration (NASA) Atmospheric Waves Experiment (AWE) instrument, launched in November 2023, provides direct observation of small‐scale (30–300 km) gravity waves (GWs) in the mesosphere on a global scale. This work examined changes in GW activity observed by AWE during two major Sudden Stratospheric Warmings (SSWs) in the 2023 and 2024 winter season. Northern Hemisphere (NH) midlatitude GW activity during these events shared similarities. Variations in mesospheric GW activity showed an evident correlation with the magnitude of zonal wind in the upper stratosphere. NH midlatitude GW activity at ∼87 km was reduced following the onset of SSWs, likely caused by wind filtering and wave saturation. The upward propagation of GWs was suppressed when the zonal wind reversed from eastward to westward in the upper stratosphere. In regions where the zonal wind weakened but remained eastward, the weakened GWs could be due to their refraction to shorter vertical wavelengths.https://doi.org/10.1029/2024GL114187small‐scale gravity wavesgravity waves in mesosphereatmospheric waves experiment (AWE)sudden stratospheric warmingwind filteringairglow |
| spellingShingle | Jiarong Zhang Yucheng Zhao Pierre‐Dominique Pautet Ludger Scherliess Michael J. Taylor Hanli Liu Gravity Wave Activity During the 2024 Sudden Stratospheric Warmings Observed by Atmospheric Waves Experiment (AWE) Geophysical Research Letters small‐scale gravity waves gravity waves in mesosphere atmospheric waves experiment (AWE) sudden stratospheric warming wind filtering airglow |
| title | Gravity Wave Activity During the 2024 Sudden Stratospheric Warmings Observed by Atmospheric Waves Experiment (AWE) |
| title_full | Gravity Wave Activity During the 2024 Sudden Stratospheric Warmings Observed by Atmospheric Waves Experiment (AWE) |
| title_fullStr | Gravity Wave Activity During the 2024 Sudden Stratospheric Warmings Observed by Atmospheric Waves Experiment (AWE) |
| title_full_unstemmed | Gravity Wave Activity During the 2024 Sudden Stratospheric Warmings Observed by Atmospheric Waves Experiment (AWE) |
| title_short | Gravity Wave Activity During the 2024 Sudden Stratospheric Warmings Observed by Atmospheric Waves Experiment (AWE) |
| title_sort | gravity wave activity during the 2024 sudden stratospheric warmings observed by atmospheric waves experiment awe |
| topic | small‐scale gravity waves gravity waves in mesosphere atmospheric waves experiment (AWE) sudden stratospheric warming wind filtering airglow |
| url | https://doi.org/10.1029/2024GL114187 |
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