Changes between Version 123 and Version 124 of doc/app/initialization_parameters
- Timestamp:
- Oct 5, 2010 12:54:39 PM (14 years ago)
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doc/app/initialization_parameters
v123 v124 385 385 |---------------- 386 386 {{{#!td style="vertical-align:top" 387 [=# ws_vertical_gradient '''ws_vertical_gradient''']387 [=#subs_vertical_gradient '''subs_vertical_gradient'''] 388 388 }}} 389 389 {{{#!td style="vertical-align:top" … … 395 395 {{{#!td 396 396 Gradient(s) of the profile for the large scale subsidence/ascent velocity (in (m/s) / 100 m).\\\\ 397 This 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 This gradient holds starting from the height level defined by [#subs_vertical_gradient_level subs_vertical_gradient_level] (precisely: for all uv levels k where zu(k) > subs_vertical_gradient_level, '''w_subs'''(k) is set: w_subs(k) = w_subs(k-1) + dzu(k) * '''subs_vertical_gradient''') up to the top boundary or up to the next height level defined by subs_vertical_gradient_level. A total of 10 different gradients for 11 height intervals (10 intervals if subs_vertical_gradient_level(1) = 0.0) can be assigned.\\\\ 398 398 '''Example:'''\\\\ 399 ''' ws_vertical_gradient''' = ''-0.002,'' ''0.0,''\\400 [# ws_vertical_gradient_level ws_vertical_gradient_level] = ''0.0,'' ''1000.0,''\\\\399 '''subs_vertical_gradient''' = ''-0.002,'' ''0.0,''\\ 400 [#subs_vertical_gradient_level subs_vertical_gradient_level] = ''0.0,'' ''1000.0,''\\\\ 401 401 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).\\\\ 402 402 With an appropriate construction of '''w_subs''' the height of the boundary layer ''z_i'' can be kept approximately constant.\\\\ … … 406 406 |---------------- 407 407 {{{#!td style="vertical-align:top" 408 [=# ws_vertical_gradient_level '''ws_vertical_gradient_level''']408 [=#subs_vertical_gradient_level '''subs_vertical_gradient_level'''] 409 409 }}} 410 410 {{{#!td style="vertical-align:top" … … 415 415 }}} 416 416 {{{#!td 417 Height level from which on the gradient for the subsidence/ascent velocity defined by [# ws_vertical_gradient ws_vertical_gradient] is effective (in m).\\\\418 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 ws_vertical_gradient].417 Height level from which on the gradient for the subsidence/ascent velocity defined by [#subs_vertical_gradient subs_vertical_gradient] is effective (in m).\\\\ 418 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 subs_vertical_gradient. For the piecewise construction of the subsidence/ascent velocity profile see [#subs_vertical_gradient subs_vertical_gradient]. 419 419 }}} 420 420 [[BR]]