Opened 8 years ago

Closed 8 years ago

#984 closed help (fixed)

Looking for ancillaries with climatological values

Reported by: demory Owned by: willie
Component: UM Model Keywords: ancillary, climatology
Cc: Platform: HECToR
UM Version: 7.8



I would like to setup a run with HadGEM3-A (UM7.8) at N96 and N216 (possibly N320, N512) using SSTs from a coupled model (from 2000 to 2030, and from 2070 to 2100) and using different CO2 concentrations. I therefore need to use ancillaries that have climatological values, and not observed values. Are there somewhere on HECToR climatological values from the following ancillaries:


Kind regards,

Change History (5)

comment:1 Changed 8 years ago by willie

  • Owner changed from um_support to willie
  • Status changed from new to accepted

Hi Marie-Estelle,

The only files on HECToR called qrclim.sulpsurf inde $UMDIR/ancil/atmos are

hector-xe6-7:wmcginty$ find /work/n02/n02/hum/ancil/atmos -name qrclim.sulpsurf -print

If you are looking for something that might be called 1970_2030/qrclim.sulpsurf, then you would either have to generate it yourself or copy it from someone else.

I hope that helps.



comment:2 Changed 8 years ago by demory

Hi Willie,

I am really looking for climatological values over the time period used by the cmip5 (so 1970-2010 for sulphur, soot, biomass, and 1850-2009 for ozone). Apparently these files do not exist so I'll have to generate them. Is there a UM tool that would create climatological values from these ancillary files listed above (so that creates a mean for each month over the entire period, so that it produces ancillary files with only 12 values (january to december) in the time dimension)?


comment:3 Changed 8 years ago by willie

  • Keywords ancillary, climatology added

Hi Marie-Estelle,

I don't know of such a tool. I think it might be a good idea to convert the existing ancillary file into netCDF format, then do the required processing yourself and finally use a program like xancil to convert the modified netCDF back into a climatological ancillary file.

I hope that helps.



comment:4 Changed 8 years ago by demory

Hi Willie,

Yes I thought of that too, so I'll do that then.

Thanks a lot for your quick replies!

Best regards,

comment:5 Changed 8 years ago by willie

  • Resolution set to fixed
  • Status changed from accepted to closed
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