Abstract
Abstract Observed atmospheric energy peaks in a three-dimensional (3-D) spectral domain are compared with energy peaks predicted by the theory of atmospheric baroclinic instability. The 3-D scale index for global-scale atmospheric motions is represented by the eigenfrequencies of 3-D normal mode functions on a sphere, based on the fact that the eigenfrequencies of Rossby modes are related to the 3-D scale of the waves through the intrinsic wave dispersion relation. When the observed atmospheric energy level is expressed as a function of the eigenfrequencies, a distinct spectral peak appears in the intermediate value of the eigenfrequencies of Rossby modes. The energy spectrum of atmospheric barotropic components clearly separates a −5/3 power law in the high-frequency range, relative to the energy peak, and a 3 power law in the low-frequency range. The peak may describe a certain energy source for large-scale atmospheric motions. For zonal wavenumber 6, we find that the observed spectral peak coincides wi...
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
