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DTSTAMP:20220812T074334Z
LOCATION:Foyer 2nd Floor
DTSTART;TZID=Europe/Stockholm:20220628T090000
DTEND;TZID=Europe/Stockholm:20220628T110000
UID:submissions.pasc-conference.org_PASC22_sess181_pos155@linklings.com
SUMMARY:P42 - Rapid Update Cycle in DWD's Seamless INtegrated FOrecastiNg 
 sYstem (SINFONY)
DESCRIPTION:Poster\n\nP42 - Rapid Update Cycle in DWD's Seamless INtegrate
 d FOrecastiNg sYstem (SINFONY)\n\nUlbrich, Welzbacher, Hanisch, Potthast, 
 Sinfony\n\nThe SINFONY project at Deutscher Wetterdienst (DWD) aims to pro
 duce seamless precipitation and radar reflectivity ensemble forecast produ
 cts<br /> for a time-range from minutes up to 12 hours. It combines numeri
 cal weather predictions (NWP) and nowcasting. Nowcasts are initialized wit
 h an update frequency of 5 Minutes, while standard short-range numerical w
 eather prediction (SRNWP) systems are initialized every three hours. Hence
 , in the worst case a three hour old SRNWP-forecast had to be combined wit
 h an up-to-date Nowcast.<br /> To overcome this issue a rapid update cycle
  (RUC) is implemented, which initializes forecasts every hour with a short
 er observation cutoff due to time criticality. To avoid growing difference
 s between the atmospheric states in RUC and SRNWP, the RUC is time limited
  and branches every 24h from the SRNWP-cycle. The prediction of extreme co
 nvective events benefits from additionally available observation systems w
 ith huge data amount (e.g. satellites). Also, a more sophisticated microph
 ysics scheme is applied differing from SRNWP leading to a spin-up phase af
 ter branching off. <br />The large amount of involved additional observati
 onal data is a challenge regarding stable data production and handling at 
 DWD. We present ideas in terms of atmospheric parameters, related data flo
 w, involved infrastructure, and results for a trial period.
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