View source for TUFLOW NetCDF Rainfall Format

=Introduction=
This page contains information on the NetCDF file format used for gridded rainfall.  This file is created if a TUFLOW rainfall Control File (.trfcf) has the NC output type "<tt><font color="blue">RF Grid Format</font><font color="red> ==</font> NC</tt>".  This file can also be directly input to TUFLOW with the .tcf command "<tt><font color="blue">Read Grid RF</font><font color="red"> == </font><file.nc></tt>" in the.tcf.

=File Format=
This file must contain a regularly spaced grid of rainfall depth.  The following variables are required:
* x - contains the x coordinates of the grid.
* y - contains the y coordinates of the grid.
* time - contains the times for the rainfall outputs.  This time should be in hours and have the 0 time as the TUFLOW simulation.
* rainfall_depth - this variable has the dimension x, y and time.  This contains the time-varying data.<br>

The total_rainfall_depth is output by TUFLOW to allow for checking of the dataset.  This variable is not used by TUFLOW.
<br>
An example output rainfall NetCDF file is below<br>
<pre>
Source:
           D:\TUFLOW\Models\radar\square\TUFLOW\bc_dbase\RFG\square_008_trfcf_rf.nc
Format:
           classic
Global Attributes:
           title      = 'Gridded Rainfall'
           source     = 'TUFLOW <version number>'
           references = 'TUFLOW NetCDF Rainfall Format (http://wiki.tuflow.com/index.php?title=TUFLOW_NetCDF_Rainfall_Format)'
           comment    = 'Contains time-varying gridded rainfall for TUFLOW simulation'
Dimensions:
           x    = <number of x coordinates (columns of data)>
           y    = <number of y coordinates (rows of data)>
           time = <number of timesteps>     (UNLIMITED)
Variables:
    time                
           Size:       <size time dimension>x1
           Dimensions: time
           Datatype:   double
           Attributes:
                       standard_name = 'time'
                       long_name     = 'time'
                       units         = 'hours'
                       axis          = 'T'
    y                   
           Size:       <size y dimension>x1
           Dimensions: y
           Datatype:   double
           Attributes:
                       standard_name = 'projection_y_coordinate'
                       long_name     = 'y-coordinate in cartesian system'
                       units         = 'm'
                       axis          = 'Y'
    x                   
           Size:       <size x dimension>x1
           Dimensions: x
           Datatype:   double
           Attributes:
                       standard_name = 'projection_x_coordinate'
                       long_name     = 'x-coordinate in cartesian system'
                       units         = 'm'
                       axis          = 'X'
    rainfall_depth      
           Size:       10x10x6
           Dimensions: x,y,time
           Datatype:   single
           Attributes:
                       _FillValue = -999
    total_rainfall_depth
           Size:       10x10
           Dimensions: x,y
           Datatype:   single
           Attributes:
                       _FillValue = -999
</pre>


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