Opened 10 months ago

Closed 8 months ago

#3121 closed help (fixed)

Change start dump time

Reported by: mtodt Owned by: um_support
Component: UM Model Keywords: time start dump ancillary
Cc: Platform: ARCHER
UM Version: 11.0



I'm trying to run a Met UM suite from 1979 onwards using a start dump for 1982. I've set the model base time in rose-suite.conf to 1979 and i_override_date_time=2 and new_date_time=1979,1,1,0,0,0 in app/um/rose-app.conf. However, atmos_main crashes with the following error:

???!!!???!!!???!!!???!!!???!!!       ERROR        ???!!!???!!!???!!!???!!!???!!!
?  Error code: 402
?  Error from routine: UP_ANCIL
?  Error message: REPLANCA: Current time precedes start time of data
?  Error from processor: 123
?  Error number: 93

I have also set ancil_reftime=1978,12,1,0,0,0 so the simulation time step shouldn't precede the ancillary file. The .out log file lists prognostic fields with validity times of 1982:

Prognostic fields

Key to output - dump or other
Data stored on land/sea points
No of fields
Length of field before unpacking (==LBLREC)
Data type
Start of first field
Validity time (yyyy:mm:dd:hh:mn:ss)
Forecast period
0   85  139968   1     2     1 U COMPNT OF WIND AFTER TIMESTEP        1982: 1: 1: 0: 0: 0   0
0   85  140400   1     3    86 V COMPNT OF WIND AFTER TIMESTEP        1982: 1: 1: 0: 0: 0   0

Does that mean resetting the date times fails or is there anything I have to do additionally? Thanks a lot in advance!


Change History (7)

comment:1 Changed 10 months ago by grenville


It appears that data in some of the ancillary files has dates which are not compatible with a 1982 start date.

What suite id does this error occur in?


comment:2 Changed 10 months ago by mtodt

Hi Grenville

The suite id is u-bp248.

But the suite runs when the start date is 1 January 1982 and the ancillary reftime is 1 December 1981, so do you mean that some ancillary files don't work when (p)re-dating the simulation to 1 January 1979 and ancillary files to 1 December 1978?


comment:3 Changed 10 months ago by grenville


u-bp248 is failing in reconfiguration - it's hard to know where to look while the suite is changing.


comment:4 Changed 10 months ago by mtodt

Hi Grenville

Sorry about that, I had to use this suite for a test as a copy of it failed. I've changed it back and the same error mentioned above pops up again. Thanks for your help!


Last edited 10 months ago by mtodt (previous) (diff)

comment:5 Changed 10 months ago by grenville


Your model updates fields from ancillary files - it's complaining about /work/y07/y07/umshared/ancil/atmos/n216e/orca025/seaice/reynolds/1981_2012_360/v2/qrclim.seaice, because the the first valid data in that file is 1981/09/01 — later that the model start time.


comment:6 Changed 10 months ago by mtodt

Thanks, Grenville!

But the first field is /work/y07/y07/umshared/ancil/atmos/n216e/ozone/sparc/1994-2005/v3/qrclim.ozone_L85_O85. Shouldn't that error occur for this file as well?


comment:7 Changed 8 months ago by grenville

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


That ozone file doesn't suffer the same problem


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