TY - RPRT AU - W. Wergen CY - Shinfield Park, Reading DA - 01/1987 LA - eng M1 - 59 M3 - Technical Report PB - ECMWF PP - Shinfield Park, Reading PY - 1987 EP - 83 TI - Diabatic nonlinear normal mode initialisation for a spectral model with a hybrid vertical coordinate ER -