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Table 6 - Exceedance thresholds of trueness, precision and precision gross errors as defined in the WDQMS Guidance Document (WMO, 2018).Anchor Table6 Table6
Variable | Trueness | Precision | Gross errors |
Surface pressure | 0.5hPa | 1.5hPa | 10hPa |
Geopotential height | 30m | 40m | 100m |
2m Temperature | 0.5K | - | 10K |
10m wind vector | 3.0m/s | 5.0m/s | 15m/s |
10m relative humidity | 10% | - | 30% |
Upper air temperature | 0.5K | 1.5K | 10K |
Upper air wind vector | 3.0m/s | 5.0m/s | 15m/s |
Upper air relative humidity | 10% | - | 30% |
Table 7 - Exceedance limits of measurement uncertainty (combination of trueness and precision) for the relevant surface and upper-air variables as defined by WMO RRR (https://www.wmo-sat.info/oscar/requirements).Anchor Table7 Table7
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