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Table 7 - Exceedance limits for the relevant surface and upper-air variables as defined by WMO RRR (https://www.wmo-sat.info/oscar/requirements)

Variable

GoldGoal

Breakthrough

Threshold

Surface pressure

0.5hPa 

0.5hPa

1hPa

Geopotential height

30m

30m

30m

2m Temperature

0.5K

1.0K

2.0K

10m wind vector 

0.5m/s

2.0m/s

3.0m/s

10m relative humidity

2%

5%

10%

Upper air temperature

0.5K

1.0K

3.0 K

Upper air wind vector

1.0m/s

3.0m/s

5.0m/s

Upper air relative humidity

2%

5%

10%

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