Changes between Version 61 and Version 62 of doc/tec/lsm

Timestamp:

Sep 26, 2020 10:36:40 AM (4 years ago)

Author:

westbrink

Comment:

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doc/tec/lsm

@@ -323 +323 @@
 
 == Exception: water surfaces ==
-When prescribing grid points with water surface (i.e. {{{surface_type = 'water'}}}), the energy balance is solved as for land surface without evaporation from vegetation canopy and bare soil. Moreover, the water temperature is constant and time and is derived from the value of {{{pt_surface}}} at model start. In order to obtain realistic results, it is required to set a zero heat capacity for the ocean skin layer (e.g. {{{c_surface = 0.0}}}).
+When prescribing grid points with water surface (i.e. {{{surface_type = 'water'}}}), the energy balance is solved as for land surface without evaporation from vegetation canopy and bare soil. Moreover, the water temperature is constant in time and is derived from the value of {{{pt_surface}}} at model start. In order to obtain realistic results, it is required to set a zero heat capacity for the ocean skin layer (e.g. {{{c_surface = 0.0}}}).
 
 A special feature of the treatment of water surfaces is the treatment of surface roughness chances due to water waves. The roughness lengths for momentum, heat, and moisture (''z'',,0,,, ''z'',,0,h,,, and ''z'',,0,q,, respectively) are hence calculated after [#beljaars Beljaars (1994)] at each grid point as: