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Bug #361

Calculation of friction velocity over land

Added by Twan van Noije over 6 years ago. Updated over 5 years ago.

Status:
Closed
Priority:
Normal
Category:
-
Start date:
06/16/2015
Due date:
% Done:

0%


Description

Over land the friction velocity u* in TM5 is calculated from the wind at 10 m. Previously, the calculation used the wrong height in one of the logarithmic scale factors (10 instead of 75 m). This bug has now been repaired.

Still, the calculation neglects the contribution from the free convection velocity scale (w*) and the stability profile functions (Psi_M). It is unclear why u* isn't calculated directly from the surface momentum stress, as is done over sea. See IFS cy31r1 documentation for details.

History

#1 Updated by Twan van Noije over 5 years ago

  • Status changed from In Progress to Closed

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