Opened 20 months ago

Closed 6 weeks ago

#1700 closed help (fixed)

STASH: radar reflectivity and COSP output

Reported by: dsergeev Owned by: um_support
Priority: normal Component: Diagnostics
Keywords: Cc:
Platform: MONSooN UM Version: 10.2

Description

Hi,

I'm trying to validate UM against the radar and lidar products from Cloudsat and CALIPSO satellites, so I'd like to include such diagnostics as
s02i351 COSP: CLOUDSAT REFLECTIVITY
s02i341 COSP: CALIPSO TOTAL BACKSCATTER
in the output.

Is there any guide on how to switch on these STASH diagnostics correctly? I tried simply rerunning my experiment with COSP model switched on (Model Selection → Atmosphere → Scientific Parameters and Sections → Section by section choices → Section 2: LW Radiation), but it fails on the first time step.

I also searched for any other relevant diagnostics in http://reference.metoffice.gov.uk/um/stash and found some in the section 4, such as

s04i118 TOTAL RADAR REFLECTIVITY 3D (dBZ)

but this STASH code does not appear in the list of diagnostics. Is it possible to make it available?

The experiment ids are xlce on ARCHER (and another option is xlpi on MONSooN).

Thank you,
Denis

Change History (14)

comment:1 Changed 20 months ago by willie

Hi Denis,

You might find some info on Cloud Feedback Model Intercomparison Project.

The radar reflectivity is only available at UM9.1 and later.

I hope that helps.

Regards

Willie

comment:2 Changed 20 months ago by grenville

Denis

Please point us to a leave file - there are 13 possible jobs in xlce and xlpi

Grenville

comment:3 Changed 20 months ago by dsergeev

Grenville,

The .leave file for the unsuccessful experiment with COSP is
/home/n02/n02/dsergeev/output/xlcea000.xlcea.d15290.t175427.leave

It was launched with options "Run with COSP": "CLOUDSAT simulator" and "CALIPSO simulator".

Denis

comment:4 Changed 20 months ago by grenville

  • Status changed from new to pending

Denis

xlcea doesn't have COSP diags on (currently) - is this the configuration used to produce /home/n02/n02/dsergeev/output/xlcea000.xlcea.d15290.t175427.leave?

You don't specify output domains for the COSP diagnostics.

Grenville

comment:5 Changed 20 months ago by dsergeev

Grenville,

Do you mean COSP diagnostics in the STASH table or COSP run options in Section 2: LW Radiation)? Do they both have to be switched on for a successful model run? The .leave file was produced when I only switched on COSP in LW Radiation section, but left diagnostics in STASH to "not used".

As for the COSP domains, I'm not sure what levels are required and I couldn't find any example.

Thanks,
Denis

comment:6 Changed 20 months ago by grenville

Denis

Where does /work/n02/n02/dsergeev/xlcea/xlcea.astart come from - it appears to be corrupted?

Grenville

comment:7 Changed 20 months ago by dsergeev

That's odd, because I've been using this start file for several runs. It was generated by the same job, but in the reconfiguration mode.

comment:8 Changed 20 months ago by grenville

OK - that's odd — could be xconv.

Grenville

comment:9 Changed 20 months ago by grenville

Denis

It appears that um vn8.2 does not properly support COSP. UM 8.6 may be a better option.

If use of COSP is essential for you, I think you'd be best to contact the COSP code developers at the MO. We can put you in touch if needed.

Grenville

comment:10 Changed 20 months ago by dsergeev

Grenville,

I also have an option of using UM8.5 (Monsoon nesting suite), so does COSP work with vn8.5?

Thanks,
Denis

comment:11 Changed 20 months ago by grenville

Denis

Could you try running the 8.5 job - its not clear what is the status of COSP at 8.5?

Let us know the jobid.

Grenville

comment:12 Changed 19 months ago by dsergeev

  • Component changed from UM Model to Diagnostics
  • Platform changed from ARCHER to MONSooN
  • UM Version changed from 8.2 to 10.2

comment:13 Changed 19 months ago by dsergeev

Hi Grenville,

I recently moved to MONSooN and started using the new Nesting Suite, so I modified the ticket.

I'm still willing to have an output of CloudSat? radar reflectivity, but the main problem is that I don't know what domain to use for COSP diagnostics. The STASH entries has no description.

Thank you,
Denis

comment:14 Changed 6 weeks ago by dsergeev

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