VOS-Clim ship suspect list for June 2008 ************************************************* Monitoring centre: Met Office, UK. All VOS-Clim ship data is monitored: against background 6-hour forecast fields for all variables except SST, for which analysed fields from the previous day are used. Key to table below ------------------ NumObs : number of observations from the ship during the month %GE : percentage of obs with gross errors (for GE limits see below) StdDvn : standard deviation of obs-background, excluding obs with gross errors Bias : mean obs-background, excluding obs with gross errors RMS : root mean square of obs-background, excluding obs with gross errors Suspect selection criteria for each variable: At least 20 observations from the ship and one or more of the following:- %GE > 10% |Bias| > Bias limit (see below) StdDvn > StdDvn limit (see below) Limits: | Press.| Wind Speed | Direct.| Air Temp.| Rel.Hum.| SST | ------- | (hPa) | (m/s) | (deg) | (deg C) | (%) | (deg C)| Bias limit | 2.5 | 5 | 30 | 2.0 | 12 | 2.0 | StdDvn limit | 5.0 | 10 | 60 | 4.0 | 20 | 4.0 | GE limit | 15.0 | 25 | 150 | 10.0 | 50 | 10.0 | Callsign Element NumObs %GE StdDvn Bias RMS ------------------------------------------------------------ C6HS4 P 23 0 1.6 2.9 3.3 ELXT8 T 21 0 1.7 3.9 4.3 DQVM RH 40 0 12.5 -20.2 23.7 ELXT8 RH 21 0 8.0 -13.0 15.2 ONDB RH 33 0 9.4 13.6 16.6 PBAS RH 52 0 8.6 -12.3 15.0 9KWP SPEED 20 15 5.0 1.3 5.2 DCPI2 SPEED 37 27 4.9 6.2 7.8 LAJV4 SPEED 51 0 4.3 5.6 7.1 DCPI2 DIRN. 24 42 73.3 ***** 127.8 DCUJ2 DIRN. 28 0 47.1 30.7 56.2 LAJV4 DIRN. 33 0 88.7 -59.0 106.5 VCDT DIRN. 26 4 64.2 -12.3 65.4 WCX7445 DIRN. 231 2 72.0 -25.7 76.4 C6IZ7 SST 22 0 1.0 3.3 3.5 CG2522 SST 25 100 DPCK SST 48 0 1.0 -2.0 2.2 MZIM8 SST 40 0 0.4 2.3 2.4 S6TS SST 20 0 2.4 -2.8 3.7 VQBW2 SST 54 0 0.8 2.1 2.2