Abstract: The nonlinear response to low-latitude, temporally periodic forcing centered on the equator is studied. Comparisons are made with a linear solution containing no advections; for both solutions the model consists of a ...

Abstract: The nonlinear equilibrium response to idealized low-latitude heating is examined and compared with the linear response using a spectral, equatorial ?-plane shallow-water model. Three categories of mass forcing are considered: ...

Abstract: A scheme of iterated multivariate optimum interpolation and nonlinear normal-mode initialization is applied to a shallow-water model in an attempt to reduce the rejection of low-latitude height and divergent wind data. The ...

Abstract: The geostrophic adjustment process in a propagating jet maximum is studied through numerical experiments performed with a two-layer, nonlinear primitive equation model. Gravity-inertia modes generated by the jet streak ...

Abstract: Scale interaction is examined in the limited-area PSU/NCAR mesoscale model, with emphasis on the forcing of small scales by the small-scale fields themselves. Output data from the model are filtered by expanding fields at ...