This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.1029/2020GL088845 in citations.
Please use the identifier: http://hdl.handle.net/2128/25678 in citations.
First Direct Observational Evidence for Secondary Gravity Waves Generated by Mountain Waves Over the Andes
First Direct Observational Evidence for Secondary Gravity Waves Generated by Mountain Waves Over the Andes
A mountain wave with a significant brightness temperature amplitude and ~500 km horizontal wavelength was observed over the Andes on 24–25 July 2017 in Atmospheric Infrared Sounder (AIRS)/Aqua satellite data. In the Modern‐Era Retrospective Analysis for Research and Applications, version 2 (MERRA‐2)...
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Personal Name(s): | Kogure, Masaru (Corresponding author) |
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Yue, Jia / Nakamura, Takuji / Hoffmann, Lars / Vadas, Sharon L. / Tomikawa, Yoshihiro / Ejiri, Mitsumu K. / Janches, Diego | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Geophysical research letters, 47 (2020) 17, S. e2020GL088845 |
Imprint: |
Hoboken, NJ
Wiley
2020
|
DOI: |
10.1029/2020GL088845 |
Document Type: |
Journal Article |
Research Program: |
Computational Science and Mathematical Methods |
Link: |
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Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/25678 in citations.
A mountain wave with a significant brightness temperature amplitude and ~500 km horizontal wavelength was observed over the Andes on 24–25 July 2017 in Atmospheric Infrared Sounder (AIRS)/Aqua satellite data. In the Modern‐Era Retrospective Analysis for Research and Applications, version 2 (MERRA‐2), reanalysis data, the intense eastward wind flowed over the Andes. Visible/Infrared Imaging Radiometer Suite (VIIRS)/Suomi‐NPP (National Polar‐orbiting Partnership) did not detect the mountain waves; however, it observed concentric ring‐like waves in the nightglow emissions at ~87 km with ~100 km wavelengths on the same night over and leeward of the Southern Andes. A ray tracing analysis showed that the mountain waves propagated to the east of the Andes, where concentric ring‐like waves appeared above a region of mountain wave breaking. Therefore, the concentric ring‐like waves were likely secondary waves generated by momentum deposition that accompanied mountain wave breaking. These results provide the first direct evidence for secondary gravity waves generated by momentum deposition. |