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| 001 | 1006588 | ||
| 005 | 20240712100851.0 | ||
| 024 | 7 | _ | |a 10.1175/JAS-D-22-0151.1 |2 doi |
| 024 | 7 | _ | |a 0022-4928 |2 ISSN |
| 024 | 7 | _ | |a 0095-9634 |2 ISSN |
| 024 | 7 | _ | |a 1520-0469 |2 ISSN |
| 024 | 7 | _ | |a 2163-5374 |2 ISSN |
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| 037 | _ | _ | |a FZJ-2023-01729 |
| 082 | _ | _ | |a 550 |
| 100 | 1 | _ | |a Procházková, Zuzana |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Sensitivity of mountain wave drag estimates on separation methods and proposed improvements |
| 260 | _ | _ | |a Boston, Mass. |c 2023 |b American Meteorological Soc. |
| 336 | 7 | _ | |a article |2 DRIVER |
| 336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1687854407_16693 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
| 336 | 7 | _ | |a JOURNAL_ARTICLE |2 ORCID |
| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a Internal gravity waves (GWs) are ubiquitous in the atmosphere, making significant contributions to the mesoscale motions. Since the majority of their spectrum is unresolved in global circulation models, their effects need to be parameterized. In recent decades GWs have been increasingly studied in high-resolution simulations, which, unlike direct observations, allow us to explore full spatiotemporal variations of the resolved wave field. In our study we analyze and refine a traditional method for GW analysis in a high-resolution simulation on a regional domain around the Drake Passage. We show that GW momentum drag estimates based on the Gaussian high-pass filter method applied to separate GW perturbations from the background are sensitive to the choice of a cutoff parameter. The impact of the cutoff parameter is higher for horizontal fluxes of horizontal momentum, which indicates higher sensitivity for horizontally propagating waves. Two modified methods, which choose the parameter value from spectral information, are proposed. The dynamically determined cutoff is mostly higher than the traditional cutoff values around 500 km, leading to larger GW fluxes and drag, and varies with time and altitude. The differences between the traditional and the modified methods are especially pronounced during events with significant drag contributions from horizontal momentum fluxes |
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| 700 | 1 | _ | |a Kruse, Christopher G. |0 P:(DE-HGF)0 |b 1 |
| 700 | 1 | _ | |a Alexander, M. Joan |0 P:(DE-HGF)0 |b 2 |
| 700 | 1 | _ | |a Hoffmann, Lars |0 P:(DE-Juel1)129125 |b 3 |u fzj |
| 700 | 1 | _ | |a Bacmeister, Julio T. |0 P:(DE-HGF)0 |b 4 |
| 700 | 1 | _ | |a Holt, Laura |0 P:(DE-HGF)0 |b 5 |
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| 700 | 1 | _ | |a Geldenhuys, Markus |0 P:(DE-Juel1)176613 |b 10 |u fzj |
| 700 | 1 | _ | |a Preusse, Peter |0 P:(DE-Juel1)129143 |b 11 |u fzj |
| 700 | 1 | _ | |a Šácha, Petr |0 P:(DE-HGF)0 |b 12 |
| 773 | _ | _ | |a 10.1175/JAS-D-22-0151.1 |0 PERI:(DE-600)2025890-2 |n 7 |p 1661–1680 |t Journal of the atmospheric sciences |v 80 |y 2023 |x 0022-4928 |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/1006588/files/1520-0469-JAS-D-22-0151.1-1.pdf |
| 856 | 4 | _ | |y OpenAccess |u https://juser.fz-juelich.de/record/1006588/files/AMSpaper-4.pdf |
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