The Effective Atmospheric Angular Momentum (EAAM) is a combined project from the Met Office and the European Centre for Medium Range Weather Forecasting (ECMWF). The data is of 3 angular momentum components of the mass and wind terms at 12 or 24 hourly intervals. The ECMWF data is from 1979-93 and the Met Office data is from 1983-1997. This dataset is public. There are four historical AAM datasets: * AAM (NMC) - National Meteorological Center * AAM (JMA) - Japanese Meteorological Agency * AAM (UKMO) - Met Office * AAM (ECMWF) - European Centre for Medium-Range Weather Forecasting

The Effective Atmospheric Angular Momentum (EAAM) is a combined project from the Met Office and the European Centre for Medium Range Weather Forecasting (ECMWF). The data is of 3 angular momentum components of the mass and wind terms at 12 or 24 hourly intervals. The Met Office data are from 1983-1997. The corresponding ECMWF data cover the period 1979 to 1993. This dataset is public.

The Effective Atmospheric Angular Momentum (EAAM) is a combined project from the Met Office and the European Centre for Medium Range Weather Forecasting (ECMWF). The data is of 3 angular momentum components of the mass and wind terms at 12 or 24 hourly intervals. The ECMWF data are from 1979-93. The corresponding Met Office Unified Model data cover the period from 1983 to 1997. This dataset is public.