TY - RPRT AU - R.J. Reed AU - E. Klinker AU - A. Hollingsworth CY - Shinfield Park, Reading DA - 01/1987 LA - eng M1 - 60 M3 - Technical Report PB - ECMWF PP - Shinfield Park, Reading PY - 1987 EP - 74 TI - An evaluation of the performance of the ECMWF operational forecasting system in analysing and forecasting tropical easterly wave disturbances. Part 2: Spectral investigation ER -