Page History

Period

Variable

Monitoring Centre

Map

Time Series (30 days)

        Individual station 

6 hourly

(00, 06, 12,18 UTC)

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

10m meridional wind

ECMWF 

NCEP

JMA 

DWD

Absolute value of O-B 6-hourly mean

• O-B of individual observation (dot), Status Flag and Observation Type from selected Centre 
• O-B 6-hourly mean (line) from selected Centre

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

10m meridional wind

All 

Absolute value of best O-B 6-hourly mean

• O-B 6-hourly mean (line), Status Flag and Observation Type from all Centres

Daily

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

10m meridional wind

ECMWF

NCEP

JMA 

DWD

Absolute value of O-B daily mean

•  O-B daily mean (line) from selected Centre

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

10m meridional wind

All 

Best absolute value of O-B daily mean

• O-B daily mean (line) from all Centres

Monthly

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

10m meridional wind

ECMWF

NCEP

JMA 

DWD

Monthly root mean square error of O-B

• Monthly average of O-B daily mean (line) from selected Centre
• Monthly std of O-B daily mean (dash line) from selected Centre

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

10m meridional wind

All 

Best (minimum) monthly rmse of O-B daily means

• Monthly rmse of O-B daily mean (line) from all Centres
• Percentage of Gross Error (based on O-B of individual observationobservations)

Alert

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

10m meridional wind

ECMWF 

NCEP

JMA 

DWD

5-day moving average of absolute value of daily O-B means

• O-B daily mean (dot) from selected Centre
• O-B 5-day moving mean (line) and number of daily values used from selected Centre

surface pressure

geopotential

2m temperature

2m humidity

10m zonal wind

10m meridional wind

All 

Best 5-day moving average of absolute value of daily O-B means.

•  O-B 5-day moving mean (line) and number of daily values used from all Centres