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HEAT CONTENT in CLM5

wvsi3w

wvsi3w

wvsi3w
Member
Hello everyone,
I have a silly question: I went through the CLM5 technical note and documentation and read the forum, but could not find what the HEAT_CONTENT1 variable actually means and how it is calculated. Is the heat content of that column of the land in total, and is it cumulative energy through time?

I am plotting the anomalies from my simulation and I see some weird things in some regions. So, I thought lets check what this HEAT CONTENT actually means first, but only explanation is "initial gridcell total heat content" which honestly doesnt give us the full details.

Do you know if there are some valid technical explanations and formulas for it?

Thank you so much for your support.
 
slevis

slevis

Moderator
Staff member
I typed "git grep HEAT_CONTENT1" in my ctsm checkout and also searched for HEAT_CONTENT1 in the User's Guide and found the following leads:
doc/source/users_guide/setting-up-and-running-a-case/history_fields_fates.rst:HEAT_CONTENT1 - initial gridcell total heat content J/m^2 T
doc/source/users_guide/setting-up-and-running-a-case/history_fields_fates.rst:HEAT_CONTENT1_VEG - initial gridcell total heat content - natural vegetated and crop landunits only J/m^2 F
doc/source/users_guide/setting-up-and-running-a-case/history_fields_nofates.rst:HEAT_CONTENT1 - initial gridcell total heat content J/m^2 T
doc/source/users_guide/setting-up-and-running-a-case/history_fields_nofates.rst:HEAT_CONTENT1_VEG - initial gridcell total heat content - natural vegetated and crop landunits only J/m^2 F
src/biogeophys/TemperatureType.F90: call hist_addfld1d (fname='HEAT_CONTENT1', units='J/m^2', &
src/biogeophys/TemperatureType.F90: call hist_addfld1d (fname='HEAT_CONTENT1_VEG', units='J/m^2', &

If I wanted to determine the calculation, I would start with the last two (in TemperatureType.F90) to determine the variable names used for these fields and then I would search the code for these variable names.

This is what came up in the User's Guide:
 
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