Changes between Version 37 and Version 38 of doc/app/maskedoutput
- Timestamp:
- Sep 16, 2010 2:51:14 PM (14 years ago)
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doc/app/maskedoutput
v37 v38 1 = = Masked data output ==2 == = General ===1 = Masked data output = 2 == General == 3 3 From release 3.7a (r483) output of masked data is implemented in PALM. This feature allows to output quantities at different mask locations, e.g. 3d volume data or 2d cross sections of arbitrary extension within the model domain; 0d or 1d data at any positions and of any amount.\\ 4 4 NetCDF4 file format is already available for masked data output.\\ 5 5 Default quantities (instantaneous and time averaged) are declared with the parameter [../d3par#data_output_masks data_output_masks], user-defined quantities can be output with [../userpar#data_output_masks_user data_output_masks_user].\\\\ 6 == = Output steering ===6 == Output steering == 7 7 Different [../d3par runtime parameters] defines the masks and steers the output of the quantities assigned with [../d3par#data_output_masks data_output_masks] and/or [../userpar#data_output_masks_user data_output_masks_user]:[=#list] 8 8 ||[../d3par#dt_domask dt_domask] ||temporal interval at which instantaneous masked data shall be output (in s) || … … 46 46 }}} 47 47 \\ 48 == = Examples ===48 == Examples == 49 49 The following examples are given for the [../examples/cbl example_cbl run] with a model domain of 2000m x 2000m x 2000m and a resolution of 50.0m. 50 === = 1. Output of one mask ====50 === 1. Output of one mask === 51 51 '''Mask 1:''' 3d volume data with an extension of 500m x 200m x 2000m from x = 0m to x = 500m, from y = 800m to y = 1000m and from the bottom to the top of the model domain. Output of instantaneous data of the three wind components. 52 52 {{{ … … 67 67 If [../d3par#mask_x mask_x], [../d3par#mask_y mask_y], [../d3par#mask_z mask_z] or [../d3par#mask_x_loop mask_x_loop], [../d3par#mask_y_loop mask_y_loop], [../d3par#mask_z_loop mask_z_loop] are not assigned, all gridpoints are used along the corresponding direction.\\ 68 68 Output is done at t = [../d3par#dt_data_output dt_data_output] since [../d3par#dt_domask dt_domask] is not assigned. 69 === = 2. Output of two different masks ====69 === 2. Output of two different masks === 70 70 '''Mask 1:''' xy cross section from x = 500m to x = 1000m and from y = 1000m to 2000m at heights 0m, 50m, 100m, 500m, 1000m and 1200m. Output of instantaneous and time averaged data of the three wind components.\\ 71 71 '''Mask 2:''' Every second gridpoint in all directions. Output of instantaneous data of the potential temperature.\\ … … 95 95 }}} 96 96 Output starts after 1h simulation time (see [../d3par#skip_time_domask skip_time_domask]) and is done every 10 minutes (see [../d3par#dt_domask dt_domask]). 97 === = 3. Output of three different masks ====97 === 3. Output of three different masks === 98 98 '''Mask 1:''' 1d data along x-direction at y = 50m, 200m, 500m and 1000m and every fifth grid point in z-dircetion. Output of instantaneous data of the w-velocity component.\\ 99 99 '''Mask 2:''' Output of the potential temperature at position x = 0m, y = 500m, z = 200m, 300m and 400m.\\