Wind input files
At present, for different wind input files, 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
# This file is created by Deltares ncols = 201 nrows = 173 x0 = -12.000 y0 = 48.000 valuePos = centre #valuePos = corner cellsize = 0.12500 0.083333333 xunit = degrees #xunit = m tref = 20080312.000000 tunit = hrs #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
- The wind on a curvi-linear grid input file, with keyword in MD-file Fwndgp
# This file is created by Deltares 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
- The Spiderweb wind input file, with keyword in MD-file Filweb
# 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
Integrated standardisation
An integrated file format, suitable for all wind input, might look as follows:
# 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 = 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
