Opened 2 years ago

Closed 2 years ago

#2801 closed help (fixed)

convert hybrid height to pressure coordinate

Reported by: zliu Owned by: um_support
Component: NDdiag Keywords: pressure levels
Cc: Platform: ARCHER
UM Version:



Is there any tools to transform UM output from height into pressure coordinate.
There is a ticket talking about this before. But most of the links are invalid for me.
Any suggestions are welcome. Thanks.


Change History (5)

comment:1 Changed 2 years ago by grenville


The UM can output on pressure levels - can you not use that?


comment:2 Changed 2 years ago by zliu

Hi Grenville,

Thanks for your replies
Yes. I think most of them.
But for some variables, like V wind increment due to nudging. I try to output this variable at 500hPa. But the model crashed and said level out of range. But I am sure the nudging is applied for 500hPa.
The other reason is that I get some files in hybrid height coordinate. I want to transform them into pressure coordinate without rerunning the simulation.


comment:3 Changed 2 years ago by willie

  • Component changed from UM Model to NDdiag
  • Keywords pressure levels added
  • Platform set to ARCHER

Hi Zhen,

You could try using NDDIAG - you can download it from Copy it to ARCHER and build it there. This allows a few diagnostics to be converted to pressure levels.


comment:4 Changed 2 years ago by zliu

Hi Willie,

Thanks for your help.


comment:5 Changed 2 years ago by willie

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