Subject: Problem with CCM 3.6.6 (T31) blowing up within 2 years ...
From: Dave Newman (newman@uci.edu)
Date: Fri Mar 01 2002 - 10:11:16 MST
Dear CCM users --
I am having a problem with CCM 3.6.6 blowing up within 2 years, and
wanted to see if anyone was experiencing anything similar, or if anyone
had any suggestions on what may be causing the problem. Here is some
relevant information:
Version: CCM 3.6.6
Res: T31
DIME: 1800 (=30 mins)
Mode: DST_FRC (i.e. no feedbacks)
DIF4: 0.2E17
Machine: SGI
The run stops at NSTEP=28660 (approx day=597, year=1.6) with the message:
CUBYDR: Departure point out of bounds: jcen,icount,pgls= 9, 1726, 1728
I noticed that the Courant limit seemed to be creeping up as well.
Also, I reran exactly the same model/case at T42, and it ran perfectly
fine for several years (well beyond day=597)
Does anyone have any suggestions or comments? Any help would be greatly
appreciated!
Thanks,
Dave Newman
newman@uci.edu
--------------------------------------------------------------
Below is some more detailed info on this run ...
Input data
==========
dstccm50: CCM 3.6.6 dst-1.0.15: dcr mbl newman test
User name to build pathnames = newman
Initial dataset is: JAN1.T31.0198.nc
Time-variant boundary dataset (sst) is: T31M5079.nc
Time-variant boundary dataset (ozone) is: ozn.0596.r8.nc
History file 1 will be a monthly average
Fields on history file 2 are instantaneous
Base day,seconds of day = 0 0
Base date,seconds of date = 101 0
Elapsed time to end run (NELAPSE) 87600
Time step in seconds (DTIME) 1800.
Time filter coefficient (EPS) 0.060
DEL2 Horizontal diffusion coefficient (DIF2) 0.250E+06
DEL4 Horizontal diffusion coefficient (DIF4) 0.200E+17
Number of levels Courant limiter applied 1
Lowest level for dry adiabatic adjust (NLVDRY) 3
Frequency of Shortwave Radiation calc. (IRADSW) 2
Frequency of Longwave Radiation calc. (IRADLW) 2
Frequency of Absorptivity/Emissivity calc. (IRADAE) 24
Frequency of SST Initialization calc. (ITSST) 1
SST dataset will be reused for each model year
OZONE dataset will be reused for each model year
Output files will be disposed ASYNCHRONOUSLY
divergence damper NOT invoked
global co2 volume mixing ratio = 3.5500000000000001E-4
number of user advected tracers= 4
All advected user tracers will be initialized to zero
Visible optical depth (tauvis) = 0.14000000000000001
Orbital parameters calculated for given year: 1950 AD
Final output
============
NSTEP = 28658 8.779757585849342E-05 6.328269167202861E-06 252.587
9.84572E+04 2.387539556912451E+01 1.61 0.32
COURLIM: *** Courant limit exceeded at k,lat= 1 37 (estimate = 1.391),
solution has been truncated to wavenumber 22 ***
*** Original Courant limit exceeded at k,lat= 1 37 (estimate =
1.391) ***
NSTEP = 28659 8.781644339713775E-05 6.556245519381330E-06 252.583
9.84572E+04 2.387403670644274E+01 1.86 0.48
COURLIM: *** Courant limit exceeded at k,lat= 1 37 (estimate = 1.405),
solution has been truncated to wavenumber 22 ***
*** Original Courant limit exceeded at k,lat= 1 37 (estimate =
1.405) ***
NSTEP = 28660 8.785450835741513E-05 7.065918497627775E-06 252.578
9.84572E+04 2.387370473511656E+01 2.09 0.70
CUBYDR: Departure point out of bounds: jcen,icount,pgls= 9, 1726, 1728
IOT Trap
Error: thread 1 (pid 2480255) has returned unexpectedly
Received signal 6: Abort or IOT
This archive was generated by hypermail 2b27 : Fri Mar 01 2002 - 12:52:55 MST