This title appears in the Scientific Report :
2021
Please use the identifier:
http://dx.doi.org/10.1029/2020GL088621 in citations.
Please use the identifier: http://hdl.handle.net/2128/27126 in citations.
Determining Gravity Wave Sources and Propagation in the Southern Hemisphere by Ray‐Tracing AIRS Measurements
Determining Gravity Wave Sources and Propagation in the Southern Hemisphere by Ray‐Tracing AIRS Measurements
Gravity waves (GWs) are key drivers of atmospheric circulation. Understanding their sources and propagation is essential to improving weather and climate models. We apply a 3D Stockwell Transform to one month of stratospheric temperature data from NASA's Atmospheric InfraRed Sounder to obtain 3...
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Personal Name(s): | Perrett, Jon A. (Corresponding author) |
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Wright, Corwin J. / Hindley, Neil P. / Hoffmann, Lars / Mitchell, Nicholas J. / Preusse, Peter / Strube, Cornelia / Eckermann, Stephen D. | |
Contributing Institute: |
Stratosphäre; IEK-7 Jülich Supercomputing Center; JSC |
Published in: | Geophysical research letters, 48 (2021) 2, S. e2020GL088621 |
Imprint: |
Hoboken, NJ
Wiley
2021
|
DOI: |
10.1029/2020GL088621 |
Document Type: |
Journal Article |
Research Program: |
Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/27126 in citations.
Gravity waves (GWs) are key drivers of atmospheric circulation. Understanding their sources and propagation is essential to improving weather and climate models. We apply a 3D Stockwell Transform to one month of stratospheric temperature data from NASA's Atmospheric InfraRed Sounder to obtain 3D GW measurements and parameters. We use ray‐tracing methods to determine the sources and propagation characteristics of these GWs over the entire Southern Ocean. We trace 1.28 million GW measurements per day for the month of June 2010. Our analysis suggests that ground‐based sources around the Andes, Antarctic Peninsula and Kerguelen play major roles, and that the GWs generated by these and other sources travel large zonal distances. We show evidence that GWs propagate into the 60°S belt, a possible source of ‘missing momentum flux’ in GCMs at this latitude. These results emphasise the need for models to incorporate the possibility that GWs can exhibit large horizontal propagation. |