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[Thor]

GRAF /Global High-Resolution Atmospheric Forecasting /IBM in The Weather Company
V naslednjih dneh bo zagnan novi model za napovedovanje vremena.
GRAF bo predvsem kos mikrovremenskim pojavom. Obstoječi modeli vremenskih napovedi namreč upoštevajo zemljepisne celice z velikostjo 10 do 15 kvadratnih kilometrov, medtem ko bo GRAF zmogel obdelati veliko večjo količino podatkov in bodo zato celice velike le še tri kvadratne kilometre.



https://siol.net/digisvet/novice/kmalu-vremenske-napovedi-ki-jim-povsod-lahko-zaupamo-512689

[regulus]

Uf zanimivo res 

Samo ali je to namenjeno samo za Severno Ameriko ali bo uporabno za celoten planet?

[Thor]

To bo globalni visoko resolucijski model, tudi za evropo (IBM Global High-Resolution Atmospheric Forecasting). Osveževanje bo na eno uro.
V prihodnosti bo morda lahko koristil celo podatke o zračnem tlaku, ki bi jih zagotavljali barometri v pametnih telefonih, in senzorjih, ki bi bili nameščeni na letalih za bolj točne napovedi.

The current top global forecasting models, the European (ECMWF) model and the U.S. GFS model, subdivide the global atmosphere into grid boxes that average 9 kilometers and 13 kilometers on a side, respectively, then solve the mathematical equations of atmospheric flow to generate a forecast for each of those grid cells. The new GRAF model employs a variable-resolution grid, resembling a honeycomb, that can be configured with higher resolution over areas of particular interest (Figure 1). Over land areas, the GRAF grid elements will have average resolutions of 3 km, which is about 3 - 4 times greater than the European and GFS models.
Six key features set IBM GRAF apart:
•Fidelity: Takes resolution down from 10km-12km to3km-4km
•Frequency: Updates every hour instead of 6-12 hours
•Fresh: Assimilates weather data more rapidly into forecasts
•Fine Grain: Up to 5-minute outputs vs. 1 hour provides a clearer picture of weather occurrences
•Fortified: Exploringincorporation of untapped data sources
•Forefront: First operational global weather model to run on a GPU-accelerated supercomputer

[regulus]

Thor hvala za razlago. 

[komar]

Je kaj novega v zvezi s tem? Bo treba en dan malo poguglati...

En sam prispevek je našel Google o njem...

Skrbnik tega modela, IBM, ima svoj superračunalnik in si lasti spletno stran Weather.com.