Changes between Version 280 and Version 281 of doc/app/initialization_parameters

Timestamp:

Apr 7, 2016 1:05:31 PM (9 years ago)

Author:

hoffmann

Comment:

--

doc/app/initialization_parameters

@@ -45 +45 @@
 {{{#!td
 Parameter to switch on the condensation scheme.\\\\ 
-For '''cloud_physics''' = ''.T.'', equations for the total water content and the liquid water potential temperature are solved instead of those for specific humidity and potential temperature. Note that a grid volume is assumed to be either completely saturated or completely unsaturated (0%-or-100%-scheme). Precipitation can additionally be switched on with parameter [#precipitation precipitation]. The parameterization of cloud and precipitation physics can be steered with [#cloud_scheme cloud_scheme]. Also, cloud-top cooling by longwave radiation can be utilized (see [#cloud_top_radiation cloud_top_radiation]).\\\\
+For '''cloud_physics''' = ''.T.'', equations for the total water content and the liquid water potential temperature are solved instead of those for specific humidity and potential temperature. The parameterization of cloud and precipitation physics can be steered with [#cloud_scheme cloud_scheme]. Also, cloud-top cooling by longwave radiation can be utilized (see [#cloud_top_radiation cloud_top_radiation]).\\\\
 '''cloud_physics''' = ''.T.'' requires [#humidity humidity] = ''.T.''.\\\\
-Detailed information about the condensation scheme is given in the description of the [[cloud physics module]] (pdf-file).\\\\
 This condensation scheme is not allowed if cloud droplets are simulated explicitly (see [#cloud_droplets cloud_droplets]).
 }}}
@@ -64 +63 @@
 The following values are allowed:\\\\
 '' 'saturation_adjust' ''\\\\
-      Simple saturation adjustment scheme (also known as 0%-or100% scheme), in which a grid volume is either saturated or subsaturated. Supersaturations are instantaneously condensed to liquid water. No precipitation is produced. If precipitation is important, use 'kessler or 'seifert_beheng'. \\\\
+      Simple saturation adjustment scheme (also known as 0%-or100% scheme), in which a grid volume is either saturated or subsaturated. Detailed information about the condensation scheme is given in the description of the [[cloud physics module]] (pdf-file). Supersaturations are instantaneously condensed to liquid water. No precipitation is produced. If precipitation is important, use 'kessler or 'seifert_beheng'. \\\\
 '' 'kessler' ''\\\\
       One-moment cloud microphysics according to Kessler (1969). It is also based on the saturation adjustment scheme to diagnose cloud water. However, it allows precipitation if the liquid cloud water exceeds a threshold value. This water is instantaneously removed from the model domain. Additionally,  liquid cloud water is allowed to sediment if [#cloud_water_sedimentation cloud_water_sedimentation] is set to true.
@@ -386 +385 @@
 '''Note:'''\\
 With '''passive_scalar''' switched on, the simultaneous use of humidity (see [#humidity humidity]) is impossible.
-}}}
-|----------------
-{{{#!td style="vertical-align:top"
-[=#precipitation '''precipitation''']
-}}}
-{{{#!td style="vertical-align:top"
-L
-}}}
-{{{#!td style="vertical-align:top"
-.F.
-}}}
-{{{#!td
-Parameter to switch on the precipitation scheme.\\\\
-For precipitation processes, PALM uses a simplified Kessler scheme. This scheme only considers the so-called autoconversion, that means the generation of rain water by coagulation of cloud drops among themselves. Precipitation begins and is immediately removed from the flow as soon as the liquid water content exceeds the critical value of 0.5 g/kg.\\\\
-The precipitation rate and amount can be output by assigning the runtime parameter [../d3par#data_output data_output]  = '' 'prr*' '' or '' 'pra*','' respectively. The time interval on which the precipitation amount is defined can be controlled via runtime parameter [../d3par#precipitation_amount_interval precipitation_amount_interval].
 }}}
 |----------------