The utility of long-term reconstructions with regional climate models Hans von Storch, Frauke Feser, Ralf Weisse and Lars Bärring The Third Workshop on Regional Climate Modeling for Monsoon System (RCM) 17-21 February 2004, East-West Center, University of Hawaii, Honolulu,
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The utility of long-term reconstructions with regional climate models Hans von Storch, Frauke Feser, Ralf Weisse and Lars Bärring The Third Workshop on.
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The utility of long-term reconstructions with
regional climate models
Hans von Storch, Frauke Feser, Ralf Weisse and Lars
Bärring
The Third Workshop on Regional Climate Modeling for Monsoon System (RCM)17-21 February 2004, East-West Center, University of Hawaii, Honolulu,
The purpose of regional models is not to validate and improve them by making them more complex but to apply them in building of new knowledge about the real world.
Long term reconstruction
• Use of model SN-REMO (REMO + spectral nudging operating on wind above 850 hPa) – details, recall Feser‘s talk
• Forcing with NCEP re-analyses 1958-2002
• Gridding: 50 km• Time step stored: 1 hourly• Area: Europe• Data freely available
Quality of reconstruction
• Is difficult to assess since specific high-resolution analyses hardly exist.
• Comparison with local data always questionable.
• Use of „integrating“ variables such as storm surges and wave heights yield favorable results.
• Wind data likely of high quality over sea – not over land.
Marcos Garcia Sotilla, 2003
Assimilated into NCEP(Atlantic)
Not assimilated into NCEP (Ionic Sea)
Wind speed at two bouys
20-year return values of wind speed, * based on daily 1992-97 data (color codes)