cc: "Phil Jones" ,"Keith Briffa" date: Tue, 17 Mar 2009 09:21:40 +0000 from: Dimitrios Efthymiadis subject: Re: ENSEMBLES RT2B DMI-HIRHAM5 outliers to: "Ole Bøssing Christensen" Dear Ole, Thank you for your reply. I look forward to receiving the reprocessed simulations. Meanwhile, I could mention that there are also some other minor issues with the units of the output fields. For instance, Sunshine duration (sund) fields looks to be expressed in hours/day (not in seconds/day, as stated in the header of the NetCDF file). In addition, although Precipitation (pr) is expressed in kg m-2 s-1, Snowfall (prsn) looks as to be expressed in kg m-2 hour-1. I will come back with a detailed list of these minor problems as soon as the DMI-HIRHAM5 fields analysis being done at CRU is completed. Best regards, Dimitrios At 08:36 17/03/2009, Ole Bøssing Christensen wrote: >Dear Dimitrios, > >This is new to me and certainly very serious for our simulation. Thank you >very much for diagnosing the problem and making us aware of it! > >To our luck, we are rerunning the simulation anyway, since we had to "patch" >it up originally: In order to reach the deadline for data 1/1/09, the >simulation had to be restarted wrt. soil water etc. some time around 2050 due >to different errors discovered along the way. To fix this inconsistency, we >have been redoing the simulation in a more proper continuous fashio, and we >will update the archive when postprocessing has been completed. But we were >certainly not aware of problems of the magnitude you have noticed! > >Greetings and thanks, Ole > >On Monday 16 March 2009 16:54, you wrote: > > Dear Dr Christensen, > > > > I have been analyzing the DMI-HIRHAM5 model output fields (monthly > > means) from the ENSEMBLES RT2B experiments and found some surface > > field outliers for November and December 2050. These fields (tas, > > tasmin, tasmax, rss, rls, hfso) exhibit excessively high values over > > the whole model domain (~Europe). By checking the "Top downward SW > > radiation" (rsdt), I realised that the solar forcing in November 2050 > > resembles a July-like situation, whereas the December 2050 solar > > field is similar to what typically occurs in June. Are you aware of > > this issue? Has the DKC modelling group tackled this problem? I would > > appreciate if you could provide me some information on this case. > > Thank you in advance. > > > > Best regards, > > > > Dimitrios > > ...................................... > > Dr Dimitrios Efthymiadis > > Climatic Research Unit > > School of Environmental Sciences > > University of East Anglia > > Norwich, NR4 7TJ, UK > >-- >Ole Bøssing Christensen, senior scientist E-mail: obc@dmi.dk >Danish Climate Center Phone : (+45) 39 15 74 26 >Danish Meteorological Institute Fax: (+45) 39 15 74 60 >Lyngbyvej 100, DK-2100 Copenhagen Ø, Denmark >Home page: http://glwww.dmi.dk/f+u/klima/klimasektion/obc.html