TUFLOW NetCDF Rainfall Format: Difference between revisions
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=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>RF Grid Format == NC</tt>". This file can also be directly input to TUFLOW with the .tcf command "<tt>Read Grid RF == <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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