TY - GEN AU - Wergen, W. ED - Reino Unido, ED - TI - Diabatic nonlinear normal mode initialization for a spectral model with a hybrid vertical coordinate T2 - ECMWF/Technical Report VL - 59 PY - 1987/// CY - Reading PB - ECMWF KW - PREVISAO NUMERICA KW - IM ER -