| 27 November 1998: | Identify participants to the mesoscale model intercomparison. |
| 20 December 1998: | Final plans, including an updated version of the present document after the discussions at Reading. |
| 15 January 1998: | 4D-VAR reanalysis of IOP 11 available. |
| 29 January 1998: | Delivery of 4D-VAR reanalysis of IOP 11 to mesoscale modellers. |
| 15 February 1998: | 4D-VAR reanalysis of IOP 11 available. |
| 26 February 1998: | Delivery of 4D-VAR reanalysis of IOP 16 to mesoscale modellers. |
| February to April 1999: | Adjusting runs with mesoscale models, validation with aircraft data encouraged. |
| 3 March 1999: | "Best" simulation of IOP 11 sent to Météo-France. |
| 1 June 1999: | "Best" simulation of IOP 16 sent to Météo-France. |
| Second half of July 1999: | Workshop on the results from the intercomparison. |