|
Detailed Reference Information |
Pulido, M. and Caranti, G. (2000). Power spectrum of a gravity wave propagating in a shearing background wind. Geophysical Research Letters 27: doi: 10.1029/1999GL010819. issn: 0094-8276. |
|
We re-analyze the effect on the spectral tail of a gravity wave propagating in a shearing background. The contribution to the spectrum of horizontal wind perturbations for low vertical wavenumbers comes from the Doppler shifting with a -1 slope and for high wavenumbers from the leakage effect with slopes ranging between -4 to -2. If leakage is not present, it becomes necessary to consider the termination of the wave in order to account for the spectral tail. We show that the decreasing of the wave amplitude when the overturning starts, leads to a spectral slope of -3, and an amplitude proportional to N2 (the square of the Br¿nt V¿is¿l¿ frequency). ¿ 2000 American Geophysical Union |
|
|
|
BACKGROUND DATA FILES |
|
|
Abstract |
|
|
|
|
|
Keywords
Atmospheric Composition and Structure, Middle atmosphere—energy deposition, Meteorology and Atmospheric Dynamics, Mesospheric dynamics, Meteorology and Atmospheric Dynamics, Middle atmosphere dynamics (0341, 0342), Meteorology and Atmospheric Dynamics, Waves and tides |
|
Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
|
|
|