Copy paste, ivm weinig tijd. In november upgrade van GFS. 8-> 10 dagen in hoge resolutie. Resolutie gaat van 23km naar 13 km. Wat ik er van begrijp is dat het meer op EC gaat lijken.
http://www.emc.ncep.noaa.gov/GFS/impl.php
The single most significant change will be the horizontal resolution upgrade - we will see things improved from 23km up to 13km (switching at the same time from a Eulerian to a Semi-Lagrangian grid). This should bring things more on a par with the likes of the ECMWF (currently at a resolution of 16km), though the ECMWF itself is due an upgrade later this decade I believe. In addition to this I believe there is also a change due to the data assimilation process, once more designed (after consultation with the ECMWF) to bring the GFS more on a par with it's rivals. In addition to this the high resolution stretch of the operational run will be extended from its current 8 day period (+192) out to 10 days (+240).
There is so much more to it than just this though. For the amateur forecasting community I cannot stress highly enough how significant this upgrade could be. If we bear in mind that up until last year many on here religiously followed the limited area 12km resolution NAE runs for just 48 hours ahead, which covered just the North-East Atlantic. Now take that idea and push it out globally, with many more parameters available completely free of charge. This really could be a game changing moment from that point of view.
There is no concrete date set as yet for this other than some time in November 2014, though I believe the upgraded data will be ready to run in automated forecasts from next month. It will be fascinating to see how this upgrade improves things a we head in to the most eagerly followed time of the year here and we should all bear in mind when analysing runs that we cannot make the same old GFS vs the european runs arguments as before as we are entering totally unchartered waters with this one.
There are also several stratospheric and o-zone improvements which I know will please many too.
https://forum.netweather.tv/topic/81409-gfs-upgrade-coming-november-2014/
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