https:///weradocs/Data_Format_Wave.shtml Last update:

WERA Ocean Wave Spectra ==> Central Server / Data Assimilation System

Each file contains all information required to describe a wave spectra map. 
  The file name is encoded in yyyydddhhmm_ccc.wav_asc with
    yyyy = 2000        (year, 1999, 2000)
     ddd = 032 ... 092 (day within the year, e.g. 01-Feb to 31-Mar)
      hh =  00 ...  23 (hour)
      mm =  00 ...  59 (minutes)
     ccc = nic         (code for experiment, e.g. nic = Nice)
     cur = cur / wav   (cur indicating data set for 'currents')
                       (wav indicating data set for 'waves')

  The time is given in UTC and indicates the center time
  of a 10 minute average.
The structure within the file is as follows: 
  2
17-OCT-2002 00:00 UTC  Koolina      21.30000 North 158.11667 West   WERA
17-OCT-2002 00:10 UTC  Kaena        21.57500 North 158.29001 West   WERA

 LAT(1,1)   LON(1,1)  DGT[km]   NX   NY
---------------------------------------
 21.86666 -159.04994    1.000  100  140

    7463
  1  47  21
0.050  0.759E+00 -999
0.060  0.991E+00 -999
0.070  0.148E+01 -999
0.080  0.160E+01 -999
0.090  0.138E+01 -999
0.100  0.967E+00 -999
0.110  0.601E+00 -999
0.120  0.482E+00 -999
0.130  0.690E+00 -999
0.140  0.449E+00 -999
0.150  0.191E+00 -999
0.160  0.182E+00 -999
0.170  0.133E+00 -999
0.180  0.161E+00 -999
0.190  0.137E+00 -999
0.200  0.114E+00 -999
0.210  0.132E+00 -999
0.220  0.141E+00 -999
0.230  0.133E+00 -999
0.240  0.875E-01 -999
0.250  0.693E-01 -999
 0.132E+01 -999
.....
 50  50  21
0.050  0.101E+01  316
0.060  0.589E+00  330
0.070  0.214E+01  226
0.080  0.586E+01  239
0.090  0.703E+01  239
0.100  0.458E+01  284
0.110  0.267E+01  242
0.120  0.142E+01  301
0.130  0.890E+00  321
0.140  0.490E+00  294
0.150  0.338E+00  309
0.160  0.354E+00  335
0.170  0.221E+00  340
0.180  0.117E+00  331
0.190  0.932E-01  307
0.200  0.725E-01  294
0.210  0.578E-01  313
0.220  0.728E-01  308
0.230  0.914E-01  315
0.240  0.832E-01  323
0.250  0.914E-01  316
 0.213E+01   80
....

  The first line gives the number M of HF radar sites
     FORMAT(x,i3)

  The next M lines give:
     date/time of the start of the measurement, 
     name of the site, 
     LAT / LON of site,
     and 'WERA', indicating this measurement has been
     conducted by the University of Hamburg WERA,
     FORMAT(x,a34,f10.5,a6,f10.5,a17)

  The next line is empty.

  The next three lines give the description of the measurement grid
     followed by the actual values:
     LAT(1,1), LON(1,1) -- upper left corner of the grid in degrees
                           West, South -> negative values
     DGT[km]            -- grid spacing in LAT and LON direction in kilometers
     NX                 -- number of grid points in East direction
     NY                 -- number of grid points in South direction
     FORMAT(x,f9.5,x,f10.5,f9.3,2(x,i4))

  The next line is empty.

  The next line gives the number N of spectra in the file
     FORMAT(x,i8)
   Each spectrum consists of the following lines:
     - IX  IY  IS   (IX, IY East and South count of measurement grid, 
                     IS number of lines in spectrum)
       FORMAT(x,i3,x,i3,x,i3)
     - IS lines containing
         Frequency [Hz] (from 0.08 Hz to 0.250 Hz in steps of 0.01 Hz)
         Spectral Density [m^2/Hz]
         Mean Direction [degrees]
       FORMAT(x,f5.3,x,e10.3,x,i4)
     - 1 line with Significant Waveheight [m], Mean Direction [degrees]
       (these are the integrated values)
       FORMAT(x,e10.3,x,i4)
Grid points with missing measurement values due to a change in working range of the radar or influence of noise are omitted.
A value of -999 for direction indicates, that the direction is not available due to lack of data from the second radar.
In case of data gaps in the spectra, these lines are simply omitted.

Comments to: gurgel@ifm.uni-hamburg.de (Klaus-Werner Gurgel)