i4dvar ex1 blowup at first time step

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briskbamboo
Posts: 20
Joined: Thu Aug 20, 2020 1:24 pm
Location: University of Tsukuba

i4dvar ex1 blowup at first time step

#1 Post by briskbamboo »

Dear

I am studying I4dvar and trying to run it's exercises. After compiled the model I run with the default in file "roms_wc13_2hours.in" The model blow up at first time step with log file
log_dt1800.txt
(82.13 KiB) Downloaded 35 times
As other has suggested that I can reduce the timestep to pass this case problem then I try to smaller time step from 1800 to 180 then the model blow up at the second steps with the log file
log_dt180.txt
(82.44 KiB) Downloaded 31 times
.

My input file is
roms_wc13_2hours.txt
(142.95 KiB) Downloaded 34 times
.

I have already read 3 papers and the tutorial files related to 4dvar recommended by the guide but found no information about this case of blow up with it default setting.

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