Changes between Version 293 and Version 294 of doc/app/initialization_parameters

Timestamp:

Jul 12, 2016 10:53:23 AM (9 years ago)

Author:

suehring

Comment:

--

doc/app/initialization_parameters

@@ -1682 +1682 @@
 }}}
 {{{#!td
-Kinematic water flux near the surface (in m/s).\\\\
+Kinematic water flux near the surface (in kg/kg m/s).\\\\
 If a non-zero value is assigned to this parameter, the respective water flux value is used as bottom (horizontally homogeneous) boundary condition for the humidity equation. This additionally requires that a Neumann condition must be used for the specific humidity / total water content (see [#bc_q_b bc_q_b]), because otherwise the resolved scale may contribute to the surface flux so that a constant value cannot be guaranteed. Also, changes of the surface humidity (see [#q_surface_initial_change q_surface_initial_change]) are not allowed.\\\\
 If no surface water flux is assigned ('''surface_waterflux''' = ''0.0''), it is calculated at each time step by u,,*,, {{{*}}} q,,*,, (of course only with a constant flux layer switched on). Here, q,,*,, is calculated from Monin-Obukhov similarity theory assuming a logarithmic temperature profile between k=0 and k=1. In this case, a Dirichlet condition (see bc_q_b) must be used as the bottom boundary condition for the humidity.