ECMWF runs the IFS in several configurations. The highest resolution "HRES" configuration is run every twelve hours out to ten days with a horizontal resolution of 9 km using 137 layers in the vertical.[3] The 51-member ensemble system "ENS" is also run every twelve hours out to 15 days with a horizontal resolution of 18 km and 91 layers in the vertical. The ECMWF also runs a coarser version of the IFS out 45 days; this version is run weekly, with output in five-day intervals. There is also a version that runs out one year. All model versions except HRES are coupled to the ocean model NEMO.
-> Minder verticale lagen in de leden, zeker bij stratosferische veranderingen kan dat een rol spelen. Misschien meer waarde hechten aan de oper. We wachten af.
Quote selectie