Opened 14 years ago

Closed 14 years ago

Last modified 13 years ago

#73 closed help (fixed)

Using analysis increments to run forecast

Reported by: swr06eai Owned by: lois
Component: UMUI Keywords:
Cc: Platform:
UM Version:


I am trying to run forecasts using the 24km NAE (which Chang-Gui Wang set up for me) using start dumps and analysis increment files produced for my project by the Met Office. I have found where to put the file path and file name of the start dumps in the UMUI, but how do I specify what and where the analysis increment files are in the UMUI?

Emma Irvine

Change History (4)

comment:1 Changed 14 years ago by lois

  • Owner changed from jeff to lois

To specify the analysis increment files in the UMUI you first need to turn on data assimilation (atmosphere → data assimilation → top level control) and select the incremental anlaysis update (IAU) scheme. Then you should be able to specify the file paths and other information in the IAU window (atmosphere → data assimilation → IAU specification)

The Ported UM (PUM) does not include the data assimilation software so this may not run on HPCx. It will depend on how much of the data assimilation software infrastructure is still in the PUM code. Please let us know if you cannot run your experiment and we will investigate the possibility of getting the necessary code from the UK Met Office.


comment:2 Changed 14 years ago by swr06eai


Thought you might like to know that I just successfully ran the job (xclid) with the data assimilation on, and IAU scheme specified. I haven't had a detailed look at the output, but it appears ok and in the .leave file it says that the IAU insertion worked.

Thanks for the help,


comment:3 Changed 14 years ago by lois

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

comment:4 Changed 13 years ago by Rosalyn Hatcher

Test Updating of a specific ticket. This should be appended to Ticket
no. 73….

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