All statistics are for data with gross errors excluded. Gross error
limits for observations compared to NCEP first guess and analysis
fields are as follows:
AP: 15.0 mb
AT: 15.0 degrees Celsius
WD: 100 degrees
WS: 15.0 m/s
SST: 5.0 degrees Celsius
WV: 25.0 m/s
Explanation of fields:
Date####: Last day for the monthly statistics
WMO## : WMO number of buoy or Ship's Call Sign
Sns : Sensor Name :
AP (Pressure), AT (Air Temp), SST (Sea Surf Temp), WS (Wind Sp),
WD (Wind Dir), WV (Wind vector), APT (Tendency), HUM (Humidity),
TD (Dew Point).
Orig : GTS Origin of the data (ALL or cccc from GTS Bulletin header)
C : GTS code (B: BUOY, S:SHIP, Y:SYNOP)
Cntr# : Monitoring Center producing the stats (e.g. ECMWF, UKMO, NCO, CMM)
Lat## : Last Latitude of buoy/ship during the month
Long## : Last Longitude of buoy/ship during the month
Rcei : Total number of obs received at the center including obs not used
Acpt : Total number of obs accepted by the model
GE# : Number of Gross Errors (i.e. number of (Obs-Field) exceeding limits))
Bias# : Mean Bias (Obs-Field)
SD## : Standard Deviation, SD = RMS (Obs-Field-Bias);
For Wind Vectors (WV), by convention, SD = RMS(WS/Rate - Field)
RMS# : Root Mean Square, RMS = RMS (Obs-Field);
For Wind Vectors (WV), by convention, RMS=RMS(SQRT(Vec(WV-Field)**2))
Rate : Mean (Obs/Field)
F : Flag for Field used : A=Analysis, G=First Guess, B=Both