How to use FHIST to highlight the effect of land-atmosphere coupling process on atmosphere?

[Fuquan Lu]

Hello.

I am trying to use FHIST to highlight the effects of land-atmosphere coupling on the atmosphere in Central Asia. I devised two experiments to do this. The first is a controlled experiment, using FHIST and letting it run free for 40 years as a control group. The second is the sensitivity experiment, which is also run using FHIST, but unlike the control experiment, we're going to fix the soil moisture in Central Asia over a period of time (Like June, July and August) and keep it constant every years, again running for 40 years. The difference between the two experiments is used to highlight the effect of land-atmosphere coupling on the atmosphere.

The edition is CESM2.2.0

How to implement it?

Look forward to any comments.

Thank you.

 

[liunanjian]

Hi, I want to modify soil moisture, which netcdf file should I modify? Thank you!

 

[Fuquan Lu]

Hi, I want to modify soil moisture, which netcdf file should I modify? Thank you!

Hi everyone,
I would like to investigate the role of soil moisture in the influence of the Atlantic Multidecadal Variability (AMV) on the Eurasian climate. Therefore, I would like to design an experiment with prescribed postive-AMO SST pattern in Northern Atlantic and climatology of soil moisture over the land. The experiment will run for 100 years in F2000climo in CESM2. The resoluton is set as f09_f09_mg17. The experiment is just similar to the LS3MIP prescribed soil moisture simulation in CMIP6 (f.e21.FHIST_SSP126.f09_f09_mg17.CMIP6-lfmip-pdLC.001), except I also set the prescribed postive-AMO SST pattern in Northern Atlantic.
Therefore, I downloaded LFMIP-pdLC-SST.H2OSOI.0.9x1.25.20levsoi.natveg.1980-2014.MONS_climo.c190716.nc from the NCAR website. I think this file is used by the LS3MIP prescribed soil moisture simulation which is just similar to my experiment? Before buiding the case, I set the prescribed postive-AMO SST pattern in Northern Atlantic and also set "use_soil_moisture_streams = .true. ". The settings in the file user_nl_clm is shown below:

The settings about the soil_moisture_streams in the file lnd_in is shown below:

After case submitting, I got the following error in the file lnd.log.7104048.231027-181639:

Any hints would be helpful! Thanks in advance!
Best,
Kaiwen

If you want to use a non-transient experiment like F2000climo, then this post may be helpful for you, but if it is a transient experiment like FHSIT, how to customize the soil moisture I am also looking for ways, if you find a way, hope to share with me, thank you