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  • to present the day15 to day46 ensemble meteograms with the sub-seasonal range climate (SUBS-M-climate).
  • to highlight significant anomalies of forecast 2m temperature, wind speed, cloudiness and precipitation from the norm for a given location and time of year.  

Running on fixed days of the month allows direct comparison between re-forecasts produced at different resolutions and/or in different years.

Different reference periods for M-Climate and SUBS-M-Climate

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  • For shorter ranges, the priority is the best possible capture of the climatological distribution of the tails (e.g. extreme forecast index (EFI) and shift of tails (SOT)).  This can be better achieved using a re-forecast span of 5 weeks (1980 re-forecast values).  
  • For longer ranges, the priority is the correct representation of seasonal cycles.  This can be better achieved by using a span of 1 week (660 re-forecast values).  The tails should not be so prone to having a reduced sample size.

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(FUG Associated with Cy49r1)