Ask about inputdata download

[majun]

Dear scientist,
Now I have ported clm5.0 to my centos6. I just want to do a simply test in a city for several days or several months.
First I use ./getregional_datasets.pl -ne 32.0,116.5 -sw 29.0,112.0 -i myinfile -o myoutlist to obtain my regional surfacedatasets.
Then: ./create_newcase --res CLM_USRDAT --user-mods-dir $MYDATADIR --case testwh --compset I2000Clm50SpGs --mach majun --run-unsupported , case setup and case build success. However, problem occurred in ./case.submit, I just want to do a short-time simulation, however it downloads inputdata (inputdata/atm/datm7/atm_forcing.datm7.GSWP3.0.5d.v1.c170516) from 1991 to 2010, I have set STOP_OPTION =days，STOP_N=6 RUN_STARTDATE"="1998-01-26" in env_run.xml file, and set hist_mfilt =1 hist_nhtfrq =48 in user_nl_clm. Do you know what's wrong？
In addition , I have other two problems on clm5.0. 1. A spin-up procedure is necessary before simulation? could we omit this step?
2. I want to simulate soil moisture and ground temperature in a city, what compset should I use in clm5.0?

 

[oleson]

The datm data for 1991 to 2010 is probably downloading because you have these files set in your datm streams. You can reduce the number of files by changing the values of the following variables in env_run.xml. Presumably, this is what you have now:

<entry id="DATM_CLMNCEP_YR_START" value="1991">
<entry id="DATM_CLMNCEP_YR_END" value="2010">

So, if you change DATM_CLMNCEP_YR_END to 1991, you should only end up with that year in your streams files (12 monthly files).

Spinup is at your discretion and depends on your scientific question. You can either try to initialize the model with observations or a best guess, or use the default initial conditions that are provided for your configuration (finidat in lnd_in), or spinup the model.

There are some example "city" configurations in CLM5, you can use these in your create_newcase command, e.g.:

--compset I1PtClm50SpGs --res 1x1_vancouverCAN
--compset I1PtClm50SpGs --res 1x1_mexicocityMEX

 

[majun]

The datm data for 1991 to 2010 is probably downloading because you have these files set in your datm streams. You can reduce the number of files by changing the values of the following variables in env_run.xml. Presumably, this is what you have now:

<entry id="DATM_CLMNCEP_YR_START" value="1991">
<entry id="DATM_CLMNCEP_YR_END" value="2010">

So, if you change DATM_CLMNCEP_YR_END to 1991, you should only end up with that year in your streams files (12 monthly files).

Spinup is at your discretion and depends on your scientific question. You can either try to initialize the model with observations or a best guess, or use the default initial conditions that are provided for your configuration (finidat in lnd_in), or spinup the model.

There are some example "city" configurations in CLM5, you can use these in your create_newcase command, e.g.:

--compset I1PtClm50SpGs --res 1x1_vancouverCAN
--compset I1PtClm50SpGs --res 1x1_mexicocityMEX

thanks for your kind help!