Transmission of EPS products

Each day the operational medium-range forecast runs first, followed as soon as possible by the EPS.

The dissemination filename convention used for the transmission of EPS products is described in Section 12. Data stream indicator for the ensemble control and perturbed forecast products in dissemination file names is `E'. Products, other then control and perturbed ensemble forecasts are disseminated in a dissemination file having data stream indicator `Y'. Data stream indicator for the EPS Weather Parameter products in dissemination file names is `B'.

EPS products are prepared separately from other dissemination products. Control and perturbed forecast products are transmitted together as one file per a time step. All derived EPS data products (other then control and perturbed forecast) are disseminated in two dissemination files. One file, valid at D+10 contains products for all time step ranges T+0 to T+240 and the other file, valid at D+15 contains products for all time step ranges from T+246 to T+360. Availability of EPS products is shown in the table below. Forecast time steps not listed in the table are disseminated at regular intervals between the times shown. Default transmission priority for EPS products is set to 40.

Table 5.14 defines transmission schedule for the EPS Weather Parameter products in BUFR:

able 5.15 defines transmission schedule for the EPS Tropical Cyclone trajectory forecast products in BUFR: