Opened 11 years ago

Closed 11 years ago

#232 closed help (fixed)

Changing number of vertical levels from 38 at 4 km to 76 at 1km

Reported by: bethan.white Owned by: willie
Component: UM Model Keywords: Vertical Levels
Cc: Platform:
UM Version: 6.1

Description

I have run a nested series of models (on Hector) from the global to 4km, all with 38 vertical levels. I want to run at 1 km with 76 vertical levels. At 4 km I have output lbcs for 1km (with 76 vertical levels), and I have created ancillary files with 76 vertical levels. When I run the reconfiguration at 1 km using these lbcs and ancillaries, I receive the following error message:

ERROR!!! in reconfiguration in routine Rcf_Readnl_Vertical
Error Code:- 50
Error Message:- Mismatch in number of model levels and number of eta_theta values
Error generated from processor 0

Is there anything else I need to consider when changing the number of vertical levels?

The job is xdsvf.

Thanks,
Bethan.

Change History (10)

comment:1 Changed 11 years ago by willie

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

Hi Bethan,
You need to specify a new vertical levels file. This is on page Atmosphere > vertical of the UMUI. Currently you have specified vertlevs_G3 which has 38 levels. The issues involved in changing the vertical resolution are discussed in para 4.5 of the UM User's Guide.

I hope this helps.
Regards,

Willie

comment:2 Changed 11 years ago by willie

Hi Bethan,

In fact there is a vertical levels file == vertlevs_2G3 == which has 76 levels already.

Regards,

Willie

comment:3 Changed 11 years ago by bethan.white

Hi Willie,

Thanks for that, I've changed to vertlevs_2G3 and had a look at the UM Users' Guide. However, I'm getting the following error when I check my setup, and I can't see what's wrong, since I don't think I have any blanks in the window.

Blank not allowed in window atmos_Science_Section_BLay
Variable: ALPHACD_BL

→ Model Selection

→ Atmosphere

→ Scientific Parameters and Sections

→ Section by section choices

→ Boundary layer and surface processes

Blank not allowed in window atmos_Science_Section_BLay
Variable: STARTLEV_BL

→ Model Selection

→ Atmosphere

→ Scientific Parameters and Sections

→ Section by section choices

→ Boundary layer and surface processes

Blank not allowed in window atmos_Science_Section_BLay
Variable: ENDLEV_BL

→ Model Selection

→ Atmosphere

→ Scientific Parameters and Sections

→ Section by section choices

→ Boundary layer and surface processes

Thanks,
Bethan.

comment:4 Changed 11 years ago by willie

Hi Bethan,

I'm afraid you need to specify the individual levels in the Atmosphere > Scientific Parameters > Section by Section > Boundary layer. The time weights table needs 26 entries (not six). The start level and end level must be the same for each entry.

Regards,
Willie

comment:5 Changed 11 years ago by bethan.white

Hi Willie,

I have made the suggested changes and my job now passes the check setup routine. However, it has crashed with the error:

ERROR!!! in reconfiguration in routine Rcf_Ancil_Atmos
Error Code:- 4
Error Message:- INANCILA:integer header error - row length
Error generated from processor 0

I'm afraid I haven't come across this error before. It is in the .leave file :
/home/n02/n02/eebaw/um/umui_out/xdsvf000.xdsvf.d09040.t163901.leave

Is this a problem with the ancillary files?

Cheers,
Bethan

comment:6 Changed 11 years ago by willie

Hi Bethan,

It is complaining that 330 is not 660. I might be wrong, but it looks like your ozone file is the wrong way round i.e. you need to rebuild it with the 330 and 660 exchanged.

Regards,

Willie

comment:7 Changed 11 years ago by willie

Hi Bethan,

The LAMPOS program is a good way to look at the extent of your LAM against a background map. It can be downloaded from http://ncas-cms.nerc.ac.uk/content/view/1362/232/ .

Regards,

== Willie ==

comment:8 Changed 11 years ago by willie

Hi Bethan,

Can this query be closed? I see you've started ticket #235 for job xdsvf.

Regards,
Willie

comment:9 Changed 11 years ago by willie

Bethan, that should have read #234.

Willie

comment:10 Changed 11 years ago by willie

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