ЯOTOR: generatoR Of weather-Type-sequences fOr euRope
Hydroclimatic extremes are mainly caused by persisting
circulation patterns or
by critical sequences.
Weather generators are used to estimate return periods of such events
by resampling observed weather parameters under stationary climate conditions.
3: State of the art approaches usually based on
the impact: the
4: Taken into the account an existing classification of large-scale weather-types in Europa we have both: information
the cause and
5: Here, we use
the cause of local weather characteristics to derive rules for seasonal weather-type transistions from
a 30-year training period using a
decision tree approach.
6: This is valid for whole Europe. A
1000 year daily time series of possible
weather-type sequences is generated following the derived rules.
7: The long-term averaged local
impacts (precipitation) is assigned to
each weather-type and month, respectively (
8: New extremes of precipitation (wet/dry) arise be the weather-type persistence
moving sums and derive extreme values