Update of ECMWF forecast system. A new version of ECMWF model (IFS cycle 41r2) was introduced at ECMWF. Click  here for full details.

The main consequences for ECMWF-TIGGE data are:

• Introduction of a new form of the reduced Gaussian grid, the octahedral grid, for HRES, ENS and ENS Extended;
• Horizontal resolution of the HRES increased from T_L1279 / N640 to T_CO1279 / O1280, where subscript C stands for cubic and O for octahedral;
• Horizontal resolution of the ENS increased from T_L639 / N320 to T_CO639 / O640 for ENS (Days 0 - 15) and from T_L319 / N160 to T_CO319 / O320  for ENS Extended (Days 16 - 46);
• For the medium-range ENS there will no longer be a decrease of resolution at day 10: the ENS Days 11 - 15 will be run at the same T_CO639 / O640 resolution as ENS Days 0 - 10;