Abstract
The dynamic normal mode initialization scheme (DNI) proposed by Sugi is applied to a limited-area model. Performance of two integration schemes for DNI is examined, and it is shown that Okamura's time integration scheme is inefficient and a backward implicit scheme is appropriate for DNI applied to the limited-area model. All physical processes can be included in the integration cycle of DNI.
Horizontal wind and precipitation rate are compared using a control forecast, a forecast with the nonlinear normal mode initialization (NMI), and with DNI. The deformation of horizontal wind near the mountains is reconstructed by DNI better than by NMI. The area-averaged precipitation is not largely improved by DNI, but the rms error of the precipitation from the control forecast is smaller in DNI than in NMI in the first three hours.
