Journal articles
Multi-modal excitation to model the Quasi-Biennial Oscillation
Abstract : The quasibiennial oscillation (QBO) of stratospheric winds is the most striking example of mean-flow generation and reversal by the nonlinear interactions of internal waves. Previous studies have used an idealized monochromatic forcing to investigate the QBO. Here we instead force a more realistic continuous wave spectrum. Unexpectedly, spreading the wave energy across a wide frequency range leads to more regular oscillations. We also find that different forcing spectra can yield the same QBO. Multimodal wave forcing is thus essential for understanding wave–mean-flow interactions in nature.
https://hal-amu.archives-ouvertes.fr/hal-03099186
Contributor : Julien Caugant <>
Submitted on : Wednesday, January 6, 2021 - 8:47:03 AM
Last modification on : Thursday, January 7, 2021 - 3:37:02 AM
Contributor : Julien Caugant <>
Submitted on : Wednesday, January 6, 2021 - 8:47:03 AM
Last modification on : Thursday, January 7, 2021 - 3:37:02 AM
File
2011.03389.pdf
Publisher files allowed on an open archive