GLAMEPS is installed on the computers at ECMWF and uses the ECMWF EPS as boundary model. The GLAMEPS ensemble is a 48+4-member multi-model ensemble, with 4 control members plus 48 perturbed members, the latter of which include lagging. GLAMEPS is run over 4 cycles per day for hours 00, 06, 12 and 18 UTC, where each cycle runs a 24+4 member ensemble. The member configuration is such that two consecutive cycles make up a full 48+4 member ensemble.
Meteograms (GLAMEPS-o-GRAMs) are generated from selected locations, including graphs for temperature, wind and precipitation. Probability maps for atmospheric parameters, where each ensemble member is equally weighted. The processed parameters comprise:
|3h accumulated||precipitation probability maps|
|wind gust at 10m||probability maps|
|mean sea level pressure||ensemble mean/spread maps|
|wind at 10m||probability maps|
|wind at 925hPa level||probability maps|
|temperature at 2m||probability maps, ensemble mean/spread maps|
|temperature at 850hPa level||ensemble mean/spread maps|
|geopotential at 500hPa level||ensemble mean/spread maps|
Output domain is NLON (870), NLAT(660), SOUTH(-11.5), WEST(-52.4), NORTH(37.925), EAST(12.775), POLAT(-46.0), POLON(30.0) and mesh size(0.075°) .