Wind input files
For the At present, for different wind input files, the following header formats are suggested to make different headers are used, which are read in different ways in the sourcecode. Some effeort has been put to 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 the possible transition NetCDF format in the future. See NetCDF standard names for more information on the used standard NetCDF names. Further below (in section: Integrated standardisation), an integrated file format is proposed which can be used for all wind input options. Comments are indicated by a # (this is open for discussion).
- The Pseudo ArcInfo wind input file, with keyword in MD-file Filwp
Code Block |
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*# This file is created by Deltares
* Additional comments...
ncols = 201
nrows = 173
x0 = -12.000
y0 = 48.000
valuePos = centre
*valuePos#valuePos = corner
cellsize = 0.12500 0.083333333
xunit = degrees
*xunit#xunit = m
tref = 20080312.000000
tunit = hrs
*tunit#tunit = ModifiedJulianDate
nquantity = 3
quantity = windx windy patm
unit = m/s m/s Pa
NODATA_value = -999.000
TIME = 0.0
1000.776001 1000.687927 1000.599976 1000.512024 1000.423950 1000.334961 1000.245911 1000.156921 1000.067932
TIME = 120.0
1000.786001 1000.637927 1000.579976 1000.582024 1000.424950 1000.324961 1000.265911 1000.159921 1000.060932
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- The wind on a curvi-linear grid input file, with keyword in MD-file Fwndgp
Code Block |
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*# This file is created by Deltares
* Additional comments...
gridfile = hirlam.grd
firstrow = nmax
lastrow = 1
firstcol = 1
lastcol = mmax
tref = 20080312.000000
tunit = hrs
nquantity = 1
quantity = patm
unit = Pa
NODATA_value = -999.0
TIME = 2130
101894.125 101880.625 101867.125 101853.625 101840.625 101827.125 101813.125 101798.625 101784.625 101769.625 101754.125 101739.125 101723.625
TIME = 2273.0
100038.75 100037.25 100035.75 100035.25 100035.25 100035.25 100036.5 100038.0 100039.75 100042.25 100045.0 100048.0 100052.0 100056.0 100060.0
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- The Spiderweb wind input file, with keyword in MD-file Filweb
Code Block |
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*# This file is created by Deltares
*# Spiders web derived from TRACK file: 19991026_0000.imd
*# Wind direction winddir = where it blows from, degrees from true north
ncols = 400
nrows = 16
radius = 600000.00
xunit = degrees
*
#xunit = m
tref = 199910260000
tunit = min
#tunit = hrs
nquantity = 3
quantity = windvel winddir patm
unit = m/s degrees Pa
NODATA_value = -999.000
TIME = 0.0000000E+00
x0 = 115.4
y0 = 18.9
pdrop = 5300
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
x0 = 114.4000
y0 = 18.90000
pdrop = 5300.000
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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Integrated standardisation
An integrated file format, suitable for all wind input, might look as follows:
Code Block |
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# This file is created by Deltares
# Spiders web wind file, derived from TRACK file: 19991026_0000.imd
# Wind direction winddir = where it blows from, degrees from true north
ncols = 400 # Number of columns used for wind field
nrows = 16 # Number of rows used for wind field
gridfile = hirlam.grd # Separate wind grid
firstrow = nmax #
lastrow = 1
firstcol = 1
lastcol = mmax
x0 = -12.000
y0 = 48.000
valuePos = centre
#valuePos = corner
cellsize = 0.12500 0.083333333
radius = 600000.00
xunit = degrees
#xunit = m
tref = 199910260000
tunit = min
*tunit#tunit = hrs
nquantity = 3
quantity = windvel winddir patm
unit = m/s degrees Pa
NODATA_value = -999.000
TIME = 0.0000000E+00
x0 = 115.4
y0 = 18.9
pdrop = 5300
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
x0 = 114.4000
y0 = 18.90000
pdrop = 5300.000
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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