Although there has been much discussion of the diurnal cycle of convection and precipitation over the ocean, causes of the diurnal cycle have not yet been entirely identified. Atmosphere-ocean coupled single-column model simulations have shown there to be a significant atmospheric response to sea-surface temperature diurnal variability extending well past the marine boundary layer. Convection as such must be responsible for at least part of these variations; however, no current modeling results have been shown using a model with realistic convection. We will show the results of a high-resolution model forced with diurnal sea-surface temperature variability and initial atmospheric stability typical of the western tropical Pacific Ocean. Specific analyses of the simulations with and without the diurnal forcing will be shown.