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At present, for different wind input files, different headers are used, which are read in different ways in the sourcecode. Some effort has been put in making the files more self-descriptive, readible and to make the input of the different files more consistent. For three wind-input options, a suggestion to standardise the headers is shown below. The suggestion is conform a possible transition to NetCDF format in the future. See NetCDF standard names for more information on the used standard NetCDF names. For Pseudo ArcInfo wind, wind on a separate curvi-linear grid and Spiderweb wind, three examples of input files are shown below.
- Keywords are case INsensitive.
- Comments are indicated by a #.
- The keyword FileVersion (= 1.0) must be the first keyword, the order of the other keywords is free to choose.
-------------------------------------------------------------------------------------------------------------------------- (this is open for discussion).
- Pseudo ArcInfo wind:
Code Block |
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### START OF HEADER ### This file is created by Deltares ### All text on a line behind the first # is parsed as commentary ### Additional commments FileVersion = 1.0 # Version of meteo input file, to check if the new file format is used (1.0) meteotype = arcinfo # Type of meteo input file: curvi, arcinfo or spiderweb NODATA_value = -9999.000 # Value used for undefined or missing data n_cols = 400 # Number of columns used for wind datafield n_rows = 16 # Number of rows used for wind datafield grid_unit = degree # Unit of distances on the grid in both x- and y-direction #grid_unit = m x_llcorner = -12.000 # Xcoordinate of lower left corner of grid (in units specified in grid_unit) y_llcorner = 48.000 # Ycoordinate of lower left corner of grid (in units specified in grid_unit) value_pos = centre # Location where the data is specified in a cell (centre or corner) #value_pos = corner dx = 0.12500 # Grid dimensions: dx and dy (in units specified in grid_unit) dy = 0.083333333 n_quantity = 3 # Number of quantities prescribed in the file quantity1 = x_wind # Name of quantity1 #quantity1 = y_wind # Name of quantity1 #quantity1 = air_pressure # Name of quantity1 unit1 = m s-1 # Unit of quantity1 #unit1 = Pa # Unit of quantity1 ### END OF HEADER TIME = 0 minutes since 2007-10-08 15:24:00 -02:00 # Fixed format: time unit since date time time difference (time zone) 1.388999 1.388999 1.388999 1.388999 1.388999 1.388999 1.388999 1.388999 1.388999 1.388999 155.0000 346.2500 357.5000 8.750000 20.00000 31.25000 42.50000 53.75000 65.00000 76.25000 5300.000 5300.000 5300.000 5300.000 5300.000 5300.000 5300.000 5300.000 5300.000 5300.000 time = 1440 minutes since 2007-10-08 15:24:00 -02:00 # Fixed format: time unit since date time time difference (time zone) 2.435253 2.435253 2.435253 2.435253 2.435253 2.435253 2.435253 2.435253 2.435253 2.435253 65.01978 75.11859 85.25320 95.45370 105.7529 116.1833 126.7762 137.5612 148.5649 159.8090 5298.544 5298.544 5298.544 5298.544 5298.544 5298.544 5298.544 5298.544 5298.544 5298.544 |
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