Uncoupling of Variables (e.g. RTHRATEN)

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twisterior
Posts: 2
Joined: Thu Aug 06, 2020 11:57 am

Uncoupling of Variables (e.g. RTHRATEN)

Post by twisterior » Thu Aug 06, 2020 12:18 pm

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!

Ming Chen
Posts: 1456
Joined: Mon Apr 23, 2018 9:42 pm

Re: Uncoupling of Variables (e.g. RTHRATEN)

Post by Ming Chen » Thu Aug 06, 2020 10:50 pm

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.
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twisterior
Posts: 2
Joined: Thu Aug 06, 2020 11:57 am

Re: Uncoupling of Variables (e.g. RTHRATEN)

Post by twisterior » Fri Aug 07, 2020 8:24 am

Oh sweet - exactly the spot I looked for. Many many thanks!

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