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 ...

Abstract: Deep-layer mean winds over the tropical Atlantic are routinely derived during the hurricane season at the Space Science and Engineering Center, Madison, Wisconsin, using imagery and soundings from the VISSR Atmospheric ...

Abstract: The statistical analysis of innovation (observation minus forecast) vectors is one of the most commonly used techniques for estimating observation and forecast error covariances in large-scale data assimilation. Building ...