Changes between Version 100 and Version 101 of doc/app/initialization_parameters


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Timestamp:
Sep 15, 2010 1:01:29 PM (14 years ago)
Author:
kanani
Comment:

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  • doc/app/initialization_parameters

    v100 v101  
    379379}}}
    380380{{{#!td
    381 v-component of the predefined bulk velocity (in m/s).
    382 
    383 This parameter comes into effect if conserve_volume_flow = .T. and conserve_volume_flow_mode = 'bulk_velocity'.
     381v-component of the predefined bulk velocity (in m/s).\\\\
     382This parameter comes into effect if [#conserve_volume_flow conserve_volume_flow] = ''.T.'' and [#conserve_volume_flow_mode conserve_volume_flow_mode] = '' 'bulk_velocity'.''
    384383}}}
    385384|----------------
     
    394393}}}
    395394{{{#!td
    396 Gradient(s) of the profile for the large scale subsidence/ascent velocity (in (m/s) / 100 m).
    397 
    398 This gradient holds starting from the height  level defined by ws_vertical_gradient_level (precisely: for all uv levels k where zu(k) > ws_vertical_gradient_level, w_subs(k) is set: w_subs(k) = w_subs(k-1) + dzu(k) * ws_vertical_gradient) up to the top boundary or up to the next height level defined by ws_vertical_gradient_level. A total of 10 different gradients for 11 height intervals (10 intervals if ws_vertical_gradient_level(1) = 0.0) can be assigned. 
    399 
    400 Example:
    401 
    402       ws_vertical_gradient = -0.002, 0.0,
    403       ws_vertical_gradient_level = 0.0, 1000.0,
    404 
    405 That defines the subsidence/ascent profile to be linear up to z = 1000.0 m with a surface value of 0 m/s. For z > 1000.0 m up to the top boundary the gradient is 0.0 (m/s) / 100 m (it is assumed that the assigned height levels correspond with uv levels).
    406 
    407 With an appropriate construction of w_subs the height of the boundary layer z_i can be kept approximately constant.
    408 
    409 Attention:
    410 The large scale vertical motion is only applied to the prognostic equation for the scalar quantities (potential temperature, humidity if humidity = .T. or passive scalar if passive_scalar = .T.) because it cannot be applied to the momentum equations due to incompressibility. Thus, the model is not mass consistent.
     395Gradient(s) of the profile for the large scale subsidence/ascent velocity (in (m/s) / 100 m).\\\\
     396This gradient holds starting from the height level defined by [#ws_vertical_gradient_level ws_vertical_gradient_level] (precisely: for all uv levels k where zu(k) > ws_vertical_gradient_level, '''w_subs'''(k) is set: w_subs(k) = w_subs(k-1) + dzu(k) * '''ws_vertical_gradient''') up to the top boundary or up to the next height level defined by ws_vertical_gradient_level. A total of 10 different gradients for 11 height intervals (10 intervals if ws_vertical_gradient_level(1) = 0.0) can be assigned.\\\\
     397'''Example:'''\\\\
     398      '''ws_vertical_gradient''' = ''-0.002,'' ''0.0,''\\
     399      [#ws_vertical_gradient_level ws_vertical_gradient_level] = ''0.0,'' ''1000.0,''\\\\
     400That defines the subsidence/ascent profile to be linear up to z = 1000.0 m with a surface value of 0 m/s. For z > 1000.0 m up to the top boundary the gradient is 0.0 (m/s) / 100 m (it is assumed that the assigned height levels correspond with uv levels).\\\\
     401With an appropriate construction of '''w_subs''' the height of the boundary layer ''z_i'' can be kept approximately constant.\\\\
     402'''Attention:'''\\
     403The large scale vertical motion is only applied to the prognostic equation for the scalar quantities (potential temperature, humidity if [#humidity humidity] = ''.T.'' or passive scalar if [#passive_scalar passive_scalar] = ''.T.'') because it cannot be applied to the momentum equations due to incompressibility. Thus, the model is not mass consistent.
    411404}}}
    412405|----------------
     
    423416}}}
    424417{{{#!td
    425 
    426        
    427 
    428 Height level from which on the gradient for the subsidence/ascent velocity defined by ws_vertical_gradient is effective (in m).
    429 
    430 The height levels have to be assigned in ascending order. The default values result in a profile which is zero everywhere regardless of the values of ws_vertical_gradient. For the piecewise construction of the subsidence/ascent velocity profile see ws_vertical_gradient.
     418Height level from which on the gradient for the subsidence/ascent velocity defined by [#ws_vertical_gradient ws_vertical_gradient] is effective (in m).\\\\
     419The height levels have to be assigned in ascending order. The default values result in a profile which is zero everywhere regardless of the values of ws_vertical_gradient. For the piecewise construction of the subsidence/ascent velocity profile see [#ws_vertical_gradient ws_vertical_gradient].
    431420}}}
    432421[[BR]]