Changes between Version 414 and Version 415 of doc/app/initialization_parameters

Timestamp:

Jan 4, 2019 12:07:16 PM (6 years ago)

Author:

kanani

Comment:

--

doc/app/initialization_parameters

@@ -2455 +2455 @@
 }}}
 {{{#!td
-Parameter for steering of the spinup time. 
-
-Depending on the model components switched on, these can run in a spinup phase without an interactive atmosphere. Currently, this mechanism is implemented for the land surface and the urban surface model. In the spinup phase, these models predict the skin and soil/wall temperatures. All window temperatures (surface and deeper layers) are not calculated during spinup. For using the spinup mechanism it is required to have a radiation model activated. Forcing is achieved by radiation and optionally a varying near-surface air temperature (steered via [#spinup_pt_mean spinup_pt_mean], [#spinup_pt_amplitude spinup_pt_amplitude], and the incoming solar radiation. After completion of the spinup, the atmospheric code is switched on and runs coupled to the surface models. Note that the near-surface temperatures are reset before coupling to their initial values prescribed by the user. The spinup mechanism can be steered via the additional parameters [#dt_spinup dt_spinup] and [#data_output_during_spinup data_output_during_spinup].
+Parameter for steering the length of the soil/wall spinup phase (in s). 
+
+The soil/wall spinup allows for the adjustment of the inert soil- and wall-layer temperatures to the prevailing atmospheric conditions, prior to the actual 3D atmosphere simulation. This saves a significant amount of computational time because during the spinup phase, the soil and wall models run without an interactive atmosphere.
+
+Currently, this mechanism is implemented for the land surface and the urban surface model. In the spinup phase, these models predict the skin and soil/wall temperatures. All window temperatures (surface and deeper layers) are not calculated during spinup. For using the spinup mechanism it is required to have a radiation model activated. Forcing is achieved by radiation and optionally a varying near-surface air temperature (steered via [#spinup_pt_mean spinup_pt_mean], [#spinup_pt_amplitude spinup_pt_amplitude], and the incoming solar radiation. After completion of the spinup, the atmospheric code is switched on and runs coupled to the surface models. On the timeline, the spinup phase has negative times counting towards 0 s, which is when the atmosphere is activated. 
+
+Note that the near-surface temperatures are reset before coupling to their initial values prescribed by the user. The spinup mechanism can be steered via the additional parameters [#dt_spinup dt_spinup] and [#data_output_during_spinup data_output_during_spinup].
 }}}
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