Abstract
Abstract Diagnostic potential enstrophy (PE) analyses are formulated for studying the dynamics of transient eddies within discrete frequency bands. The PE analyses are derived for nonconservative quasigeostrophic motion on a sphere and relate local PE tendencies to 1) conversions from the climatological-mean flow, 2) nonlinear dynamical sources, and (3) nonconservative physical sources. Local conversions are associated with cross-gradient residual eddy fluxes of pseudopotential vorticity (PV) while the nonlinear and nonconservative sources of PE result from correlations between PV anomalies and anomalous PV source terms. The PE analyses provide a useful local diagnostic approach for studying fundamental aspects of transient wave dynamics within a PV-based framework. Wintertime-average PE analyses are constructed for both bandpass (BP) and low-pass (LP) intraseasonal timescales. These analyses are applied to the multiyear GEOS-1 assimilated dataset to ascertain the primary sources and sinks of BP and LP tr...
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.
