Opened 12 years ago

Closed 12 years ago

#147 closed help (fixed)

periodic updating of soil moisture or deep soil temperature from smow and slt ancils

Reported by: agt Owned by: jeff
Component: UM Model Keywords:
Cc: Platform:
UM Version: 4.5


UM vn4.5, atm-only

Previously in ticket 138, Jeff managed to get snow depth to update daily using a preuserstash file.

On a similar vein (but I think a different problem), I am trying to do periodic updating of soil moisture on levels and / or deep soil temperature. Ideally I want hourly updating, but at present not even monthly updating will work.

According to UMDP C7 page 8, time interpolation is not possible for deep soil temp (file unit 32), so lets ignore that.

I can get updating of (single-level) soil moisture to work on any period, however attempts to update the moses level soil moisture field fail, with no obvious error messages in leave files.

I am trying to update from the qrclim.slt.newA file.

Working job: xdema (updates single level sm), see ~agt/um/umui_out/xdema000.xdema.d08185.t131052.leave

Broken job: xdena (updates mutli-level sm), see



Change History (4)

comment:1 in reply to: ↑ description Changed 12 years ago by jeff

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

Hi Andy

Working job: xdema (updates single level sm), see ~agt/um/umui_out/xdema000.xdema.d08185.t131052.leave

Looks like this job crashed to me.

Broken job: xdena (updates mutli-level sm), see

Could you rerun this job and set the XLFRTEOPTS variable to turn off buffering, see helpdesk query #69.


comment:2 Changed 12 years ago by agt


I think xdema crashed only because I ran it for 1200s. I did a CRUN on it last night and it continued. Also job xdeoa is a new copy but requesting 3600s. This has leave file: xdeoa000.xdeoa.d08186.t084353.leave

I've added the XLFRTEOPTS to the xdena job. This has run as xdepa and has put info in the fort6 files in /hpcx/devt/n02/n02-ncas/agt/um/xdep/ . This has leave file: xdepa000.xdepa.d08186.t083852.leave



comment:3 Changed 12 years ago by jeff

Hi Andy

Sorry for the long delay. I've now got a mod which will allow updating of the soil moisture field. It can be found on hector here, /home/n02/n02/jwc/um/vn4.5/mods/updlandanc.mod. There are 2 fields calculated from soil moisture (unfrozen and frozen soil moisture fraction), in my mod these are also updated every time soil moisture is but it is easy to change this to just calculate these fields at the start of the run if you want. This mod also has a change to enable time interpolation of soil temperature if you still want to do that. I have only run a short 10 day run with daily updating so there may still be problems I haven't come across yet, but my run seemed to be working correctly. Let me know how you get on with this mod.


comment:4 Changed 12 years ago by jeff

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