(shr_strdata_advance) ERROR: for stream 1 (shr_strdata_advance) ERROR: dt limit1 1826.00000000000

[Chiru]

Hi everyone,

I am trying to CLM5 simulation for the duration of 1979-2022 with my own atmospheric forcing data at 0.1-degree resolution with 1hr temporal resolution. The simulation is running up to 1985 after that it is failing by giving the following error.

(shr_strdata_advance) ERROR: for stream 1
(shr_strdata_advance) ERROR: dt limit1 1826.00000000000
4.166666666666663E-002 1.50000000000000
(shr_strdata_advance) ERROR: dt limit2 19860101 0 19910101

The atm.log and land.log files size is larger so I am sharing the link of folder where the files can be found.

https://csciitd-my.sharepoint.com/:f:/g/personal/cez218275_iitd_ac_in/EqkqN1VzZDZMoyPcf3TtqPAB326P90Mny_P_dAh1LBU_MA?e=tzL4AD

Kindly help me to overcome this error

 

[oleson]

Your datm_in shows:

streams = "datm.streams.txt.CLMGSWP3v1.Solar 1991 1991 2010",
"datm.streams.txt.CLMGSWP3v1.Precip 1991 1991 2010",
"datm.streams.txt.CLMGSWP3v1.TPQW 1991 1991 2010",

If you want to run 1979-2022 with your forcing, then you should change this to:

streams = "datm.streams.txt.CLMGSWP3v1.Solar 1979 1979 2022",
"datm.streams.txt.CLMGSWP3v1.Precip 1979 1979 2022",
"datm.streams.txt.CLMGSWP3v1.TPQW 1979 1979 2022",

On the other hand, I see that your available forcing is for 1979-2005, so I'm not sure what you intend to happen after 2005?

If you want to loop back over your forcing once the model reaches the end of 2005, then you could try:

streams = "datm.streams.txt.CLMGSWP3v1.Solar 1979 1979 2005",
"datm.streams.txt.CLMGSWP3v1.Precip 1979 1979 2005",
"datm.streams.txt.CLMGSWP3v1.TPQW 1979 1979 2005",

It looks like you have taxmode set to cycle already.

 

[Chiru]

Dear Oleson,
Thank you for your reply. now should I copy the datm_in (from CaseDocs to my case as user_datm_in) and to changes in it or should I simply
streams = "datm.streams.txt.CLMGSWP3v1.Solar 1979 1979 2022",
"datm.streams.txt.CLMGSWP3v1.Precip 1979 1979 2022",
"datm.streams.txt.CLMGSWP3v1.TPQW 1979 1979 2022",

above lines to user_nl_datm.

I am new to this kindly let me know.

 

[oleson]

Normally, you would implement this by using the variables in env_run.xml:

./xmlchange DATM_CLMNCEP_YR_START=1979
./xmlchange DATM_CLMNCEP_YR_ALIGN=1979
./xmlchange DATM_CLMNCEP_YR_END=2022

But this would only work if you had forcing data through 2022. Do you?
Otherwise,

./xmlchange DATM_CLMNCEP_YR_START=1979
./xmlchange DATM_CLMNCEP_YR_ALIGN=1979
./xmlchange DATM_CLMNCEP_YR_END=2005

The forcing data will be cycled over 1979-2005 for model years 2006-2022.

Run ./preview_namelists and then check to see that your datm_in is setup correctly.

 

[Chiru]

Yes I do have the atmospheric forcing data from 1979 to 2022 (I am also including the data in user_datm.stream* files).

Thank you for your reply now I can run the simulation.

 

[Chiru]

Hello , @Oleson
I tried to run the CLM5 Simulation with my own atmospheric forcing data from 1979-2022 however, my simulation failed by following error


(shr_strdata_advance) ERROR: dt limit2 19790101 25200 19790101
28800
ERROR: (shr_strdata_advance) ERROR dt limit for stream
4.166666666666666E-002 1.50000000000000
(shr_strdata_advance) ERROR: dt limit2 19790101 25200 19790101
28800
ERROR: (shr_strdata_advance) ERROR dt limit for stream
4.166666666666666E-002 1.50000000000000
4.166666666666666E-002 1.50000000000000
(shr_strdata_advance) ERROR: dt limit2 19790101 25200 19790101
28800
ERROR: (shr_strdata_advance) ERROR dt limit for stream
4.166666666666666E-002 1.50000000000000

 

[Chiru]

So, in the same simulation next I ran my simulation from 1980-2022, this time it ran up to 2020-12-20 after that it gave me following error

(shr_strdata_advance) ERROR: for stream 1
ERROR: (shr_strdata_advance) ERROR dt limit for stream
(shr_strdata_advance) ERROR: for stream 1
(shr_strdata_advance) ERROR: dt limit1 0.125000000000000
4.166666666666663E-002 1.50000000000000
(shr_strdata_advance) ERROR: dt limit2 20210101 0 20210101
10800
ERROR: (shr_strdata_advance) ERROR dt limit for stream
(shr_strdata_advance) ERROR: dt limit1 0.125000000000000
4.166666666666663E-002 1.50000000000000
(shr_strdata_advance) ERROR: dt limit2 20210101 0 20210101
10800
ERROR: (shr_strdata_advance) ERROR dt limit for stream
(shr_strdata_advance) ERROR: for stream 1
(shr_strdata_advance) ERROR: dt limit1 0.125000000000000
4.166666666666663E-002 1.50000000000000

Please find the attached files.

My atm.log* and lnd.log* files are having larger size than uploaded size so I am sharing the link to those files.

Kindly help me to overcome this error. Thanks

https://csciitd-my.sharepoint.com/:f:/g/personal/cez218275_iitd_ac_in/EoYhe9K2FqREuf4FSz2n7T0BIkpx4nu-_j0FQd6KQqYaCA?e=CEHTo4

 

[oleson]

I would look at this file to make sure it has the right time stamps, particularly the first time stamp:

/scratch/civil/phd/cez218275/IMDAA_1979_2022/Solar/India_regrid_ncum_imdaa_reanl_HR_DSWRF-sfc_2021010100-2021123123.nc

and look at the last time stamp of the previous file.
They should be 3 hours apart.
And make sure the units on the time variable make sense.

 

[oleson]

You could also check to make sure your offset and time stamp settings are the same as GSWP3 as described here:

1.2.4. Customizing the DATM namelist — ctsm release-clm5.0 documentation

 

[Chiru]

Hello ,@Oleson

Yes you are right from 1980-2020 my Solar data time stamps for (interval) is 1 hour, however, in my 2021 and 2022 the time interval is 3 hour. So is this (time stamp) what creating the error in my simulation ?

 

[oleson]

I assume so since the error seems to be occurring when you are trying to transition from hourly to 3-hourly data according to the atm log. That's not a normal mode of operation for the datm.