Changes between Version 117 and Version 118 of doc/app/initialization_parameters
- Timestamp:
- Sep 16, 2010 10:06:58 AM (14 years ago)
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doc/app/initialization_parameters
v117 v118 1734 1734 }}} 1735 1735 {{{#!td 1736 Height where the damping layer begins in the [ [1d-model]] (in m).\\\\1736 Height where the damping layer begins in the [../../tec/1dmodel 1d-model] (in m).\\\\ 1737 1737 This parameter is used to switch on a damping layer for the 1d-model, which is generally needed for the damping of inertia oscillations. Damping is done by gradually increasing the value of the eddy diffusivities about 10% per vertical grid level (starting with the value at the height given by '''damp_level_1d''', or possibly from the next grid pint above), i.e. K,,m,,(k+1) = 1.1 * K,,m,,(k). The values of K,,m,, are limited to 10 m^2^/s at maximum.\\\\ 1738 1738 This parameter only comes into effect if the 1d-model is switched on for the initialization of the 3d-model using [#initializing_actions initializing_actions] = '' 'set_1d-model_profiles'.'' … … 1749 1749 }}} 1750 1750 {{{#!td 1751 Calculation method for the energy dissipation term in the TKE equation of the [ [1d-model]].\\\\1751 Calculation method for the energy dissipation term in the TKE equation of the [../../tec/1dmodel 1d-model].\\\\ 1752 1752 By default the dissipation is calculated as in the 3d-model using diss = (0.19 + 0.74 * l / l_grid) * e{{{**}}}1.5 / l.\\\\ 1753 1753 Setting '''dissipation_1d''' = '' 'detering' '' forces the dissipation to be calculated as diss = 0.064 * e{{{**}}}1.5 / l. … … 1784 1784 }}} 1785 1785 {{{#!td 1786 Temporal interval of vertical profile output of the [ [1d-model]] (in s).\\\\1786 Temporal interval of vertical profile output of the [../../tec/1dmodel 1d-model] (in s).\\\\ 1787 1787 Data are written in ASCII format to file [../iofiles#LIST_PROFIL_1D LIST_PROFIL_1D]. This parameter is only in effect if the 1d-model has been switched on for the initialization of the 3d-model with [#initializing_actions initializing_actions] = '' 'set_1d-model_profiles'.'' 1788 1788 }}} … … 1798 1798 }}} 1799 1799 {{{#!td 1800 Temporal interval of runtime control output of the [ [1d-model]] (in s).\\\\1800 Temporal interval of runtime control output of the [../../tec/1dmodel 1d-model] (in s).\\\\ 1801 1801 Data are written in ASCII format to file [../iofiles#RUN_CONTROL RUN_CONTROL]. This parameter is only in effect if the 1d-model is switched on for the initialization of the 3d-model with [#initializing_actions initializing_actions] = '' 'set_1d-model_profiles'.'' 1802 1802 }}} … … 1812 1812 }}} 1813 1813 {{{#!td 1814 Time to be simulated for the [ [1d-model]] (in s).\\\\1814 Time to be simulated for the [../../tec/1dmodel 1d-model] (in s).\\\\ 1815 1815 The default value corresponds to a simulated time of 10 days. Usually, after such a period the inertia oscillations have completely decayed and the solution of the 1d-model can be regarded as stationary (see [#damp_level_1d damp_level_1d]). This parameter is only in effect if the 1d-model is switched on for the initialization of the 3d-model with [#initializing_actions initializing_actions] = '' 'set_1d-model_profiles'.'' 1816 1816 }}} … … 1831 1831 A horizontal wind profile consisting of linear sections (see [#ug_surface ug_surface], [#ug_vertical_gradient ug_vertical_gradient], [#ug_vertical_gradient_level ug_vertical_gradient_level] and [#vg_surface vg_surface], [#vg_vertical_gradient vg_vertical_gradient], [#vg_vertical_gradient_level vg_vertical_gradient_level], respectively) as well as a vertical temperature (humidity) profile consisting of linear sections (see [#pt_surface pt_surface], [#pt_vertical_gradient pt_vertical_gradient], [#q_surface q_surface] and [#q_vertical_gradient q_vertical_gradient]) are assumed as initial profiles. The subgrid-scale TKE is set to 0 but K,,m,, and K,,h,, are set to very small values because otherwise no TKE would be generated.\\\\ 1832 1832 '' 'set_1d-model_profiles' ''\\\\ 1833 The arrays of the 3d-model are initialized with the (stationary) solution of the [ [1d-model]]. These are the variables e, K,,h,,{{{,}}} K,,m,,{{{,}}} u, v and with Prandtl layer switched on rif, us, usws, vsws. The temperature (humidity) profile consisting of linear sections is set as for '' 'set_constant_profiles' '' and assumed as constant in time within the 1d-model. For steering of the 1d-model a set of parameters with suffix "_1d" (e.g. [#end_time_1d end_time_1d], [#damp_level_1d damp_level_1d]) is available.\\\\1833 The arrays of the 3d-model are initialized with the (stationary) solution of the [../../tec/1dmodel 1d-model]. These are the variables e, K,,h,,{{{,}}} K,,m,,{{{,}}} u, v and with Prandtl layer switched on rif, us, usws, vsws. The temperature (humidity) profile consisting of linear sections is set as for '' 'set_constant_profiles' '' and assumed as constant in time within the 1d-model. For steering of the 1d-model a set of parameters with suffix "_1d" (e.g. [#end_time_1d end_time_1d], [#damp_level_1d damp_level_1d]) is available.\\\\ 1834 1834 '' 'by_user' ''\\\\ 1835 1835 The initialization of the arrays of the 3d-model is under complete control of the user and has to be done in routine {{{user_init_3d_model}}} of the user-interface (see [[section 3.5.1]]).\\\\ … … 1853 1853 }}} 1854 1854 {{{#!td 1855 Mixing length used in the [ [1d-model]].\\\\1855 Mixing length used in the [../../tec/1dmodel 1d-model].\\\\ 1856 1856 By default the mixing length is calculated as in the 3d-model (i.e. it depends on the grid spacing).\\\\ 1857 1857 By setting '''mixing_length_1d''' = '' 'blackadar','' the so-called Blackadar mixing length is used (l = kappa * z / ( 1 + kappa * z / lambda ) with the limiting value lambda = 2.7E-4 * u_g / f). … … 1869 1869 {{{#!td 1870 1870 Surface potential temperature (in K).\\\\ 1871 This parameter assigns the value of the potential temperature '''pt''' at the surface (k=0). Starting from this value, the initial vertical temperature profile is constructed with [#pt_vertical_gradient pt_vertical_gradient] and [#pt_vertical_gradient_level pt_vertical_gradient_level]. This profile is also used for the [ [1d-model]] as a stationary profile.\\\\1871 This parameter assigns the value of the potential temperature '''pt''' at the surface (k=0). Starting from this value, the initial vertical temperature profile is constructed with [#pt_vertical_gradient pt_vertical_gradient] and [#pt_vertical_gradient_level pt_vertical_gradient_level]. This profile is also used for the [../../tec/1dmodel 1d-model] as a stationary profile.\\\\ 1872 1872 '''Attention:'''\\ 1873 1873 In case of ocean runs (see [#ocean ocean]), this parameter gives the temperature value at the sea surface, which is at k=[#nzt nzt]. The profile is then constructed from the surface down to the bottom of the model. … … 1935 1935 {{{#!td 1936 1936 Surface specific humidity / total water content (kg/kg).\\\\ 1937 This parameter assigns the value of the specific humidity '''q''' at the surface (k=0). Starting from this value, the initial humidity profile is constructed with [#q_vertical_gradient q_vertical_gradient] and [#q_vertical_gradient_level q_vertical_gradient_level]. This profile is also used for the [ [1d-model]] as a stationary profile.1937 This parameter assigns the value of the specific humidity '''q''' at the surface (k=0). Starting from this value, the initial humidity profile is constructed with [#q_vertical_gradient q_vertical_gradient] and [#q_vertical_gradient_level q_vertical_gradient_level]. This profile is also used for the [../../tec/1dmodel 1d-model] as a stationary profile. 1938 1938 }}} 1939 1939 |----------------