To answer this question, we should know that: ECMWF's operational forecasts are produced from its "Integrated Forecast System" (sometimes informally known in the United States as the "European model") which is run every twelve hours and forecasts out to ten days.is the reasoning for what question and answer pair?
Q: ECMWF's operational forecasts are produced from its "Integrated Forecast System" (sometimes informally known in the United States as the "European model") which is run every twelve hours and forecasts out to ten days.

Based on this passage, what is the name of the european weather model?
A: Integrated Forecast System