1. 1997 ‘Observing systems simulation experiments: methodology, examples and limitations’. Pp. 155–163 in Proceedings of the CGM/WMO workshop on the impact of various observing systems on numerical weather prediction, Geneva, 7–9 April, 1997. WMO World Weather Watch Tech. Rep. 18, World Meteorological Organization, Geneva, Switzerland
2. and 1996 ‘Impact of observations in NWP models: Techniques and results of recent studies’. Forecasting Research Division Scientific Paper 42, Met Office, Exeter, UK
3. and 2000 ‘Assimilation of directly measured stratospheric winds into the Unified Model’. Forecasting Research Technical Report 332, Met. Office, Exeter, UK