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If the value of any key is unknown it is encoded as "na". However, every record has to have a valid score_value (the "v" key); if the value is not known such record should not be included in the data file.

Example

centre=ecmf,model=hr_0001,d=201602,t=00,s=0,st=97146,lat=-4.1,lon=122.43,lam=-4.147,lom=122.484,se=50,me=163,par=tcc,sc=ct,th=2/6,v=0/0/0/0/0/7/0/0/21
s=3,v=0/0/0/0/0/4/0/0/24
s=6,v=0/0/0/0/0/2/0/0/26
t=12,s=12,v=0/0/0/0/0/6/0/0/22
s=15,v=0/0/0/0/0/3/0/0/25
s=18,v=0/0/0/0/0/4/0/0/24
t=00,s=0,sc=mae,th=na,v=60.92
s=3,v=59.92
s=6,v=62.01
t=12,s=12,v=60.59
s=15,v=59.81
s=18,v=62.08
t=00,s=0,sc=me,v=-60.92
s=3,v=-59.92
s=6,v=-62.01
s=9,n=26,v=-66.37
...

Values of keys

• centre (4-characters string) is the WMO identifier of the originating centre (ammc, cwao, ecmf, edzw, egrr, kwbc, lfpw, rjtd, rksl, rums etc);

• model_id (a string not containing a comma or vertical bar) is free model identifier assigned by the originating centre (to distinguish between potentially different models provided by the centre);

• yyyymm is the month of the mean, where yyyy is the year and mm is the month (01-12);
• time is the validity time (in hours UTC) of the forecasts verified;
• forecast_step is the length of the forecast (in hours);
• station_id (a number) is the WMO ID of the observation station verifying the forecasts;
• latitude is the latitude of the observation station verifying the forecasts;
• longitude is the longitude of the observation station verifying the forecasts;
• model_grid_latitude is the latitude of the model grid point used to extract the forecast at the observation location (*);
• model_grid_longitude is the longitude of the model grid point used to extract the forecast at the observation location (*);
• station_elevation is the elevation of the observation station above the mean sea level in meters;
• model_orography_elevation is the elevation of the model orography at the observation location (*);
• parameter is the verified model output parameter:
  

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  List of parameters List of parameters

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• sample_size is number of observations used to compute the monthly mean at the given station;
  
• score_value is the value or values of the score mean computed based on the forecast initiating at time time UTC, verifying in the month yyyymm, for the forecast length forecast_step hours; in case of n_xn contingency table these are the n² values delimited by forward slashes (see the score table above); if possible, the value should be printed using the printf string format specifier "g" (or equivalent).

Remarks