For the WAFS block 0 and 1 upgrades in Table 1, the NOAA/Aviation Weather Center (WAFC Washington) has been collaborating with the Met Office in the United Kingdom (WAFC London) and NCAR to expand the current domestic operational GTG algorithm to the global domain.
For the operationally harmonized WAFS product between WAFC Washington and WAFC London, we apply the same GFS-based deterministic EDR-scale G-GTG system with the same diagnostic selection (appendix) to the Met Office's global UM on the same grid spacing as the GFS model.