No. 53, March 1999: Graham, R.J.; Anderson, S.R.; Bader, M.J.; The relative utility of current observation systems to global-scale NWP forecasts

No. 54, April 1999: Graham, R.J.; Evans, A.D.L.; Mylne, K.R.; Harrison, M.S.J.; Robertson, K.B.; An assessment of seasonal predictability using Atmospheric General Circulation Models

No. 55, November 1999: Ingleby, N.B.; The Statistical Structure of Forecast Errors and its Representation in the Met. Office Global 3-Dimensional Variational Data Assimilation Scheme