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TAUX calculation

J

jma

New Member
Hi, we are trying to calculate windstress using the low-level winds (based on Wind Stresses computation) since TAUX was not saved in our runs. Could someone please point me to where TAUX is calculated in the source code (we are running CAM5 with climatological SSTs) as we're getting quite confusing results. Thanks! Julie
 
I

islas

Moderator
Staff member
I think for CESM1 this is done here ./models/csm_share/shr/shr_flux_mod.F90. But I think it's going to be really difficult to reconstruct TAUX after the fact. Since TAUX depends non-linearly on wind speed, you'd need to have high frequency wind speed output i.e., using daily averages isn't going to cut it. In addition, you'd need to know the stabilty and everything else that determines the friction velocity, Monin-Obhukov profiles and all that at each timestep. I'm not sure it'll really be possible without having the timestep frequency inputs to the flux calculation.
 
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