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Uncoupling of Variables (e.g. RTHRATEN)

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New member
Hey guys,

I have a question regarding coupling and uncoupling of tendency variables in WRF 4. I introduced a new module estimating a temperature tendency, let's call it myth_ten. Following, for example the radiative tendency RTHRATEN, I coupled myth_ten with mu in the routine calculate_phy_tend and added it to the total temperature tendency in update_phy_ten.

So far, everything is nice. However, if I write myth_ten to the output files, it differs since it is still coupled. On the contrary, as far as I can tell from registry and physical values, the variable RTHRATEN is uncoupled. Does anybody know where this uncoupling happens?

Best regards and stay safe!
Please look at the code module_big_step_utilities_em.F, in which you can find the subroutine phy_prep_part2. All physics tendencies are decoupled here.