Operational Data Checking

An automatic data checking system has been implemented at ECMWF to trigger warnings in case of anomalies affecting the quality or the availability of the data assimilated by the model. Selected statistical parameters (number of observations, bias correction, and mean bias-corrected background, analysis departures and probability of gross error) are checked against an expected range. An appropriate alert message (including a time series plot) is generated if statistics are outside the specified ranges. A severity level (slight, considerable, severe) is assigned to each message depending on how far statistics are from the expected values. Two kinds of ranges are used by the automatic checking: Soft and Hard limits. Soft limits are updated automatically using statistics from the last twenty days (extremes are excluded during this process). Hard limits are adjusted manually when required.

Currently, the automatic checking is limited to data passing through the minimisation process (including VarBC passive data). It's being applied twice a day to the delayed cut-off 4D-VAR cycles (00 and 12) and four times a day to the early delivery assimilation system (00,06,12 and 18).

The alarm system results are based on feedback information from the ECMWF data assimilation and consequently reflect the ECMWF data usage. Although most warnings are related to data problems, they may on occasion also be related to model issues. Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice. ECMWF accepts no responsibility for actions taken on the basis of these results.

Early delivery 4D-VAR at 2019-04-19 06:00

gpsro
All COSMIC-6 rising RO bending angles Missing
ssmis
DMSP-18 SSMIS 17 allsky radiances : OutOfRange
Considerably: avg(norm_fg_depar)=0, expected range: -0.01 0.02
DMSP-18 SSMIS 7 allsky radiances : OutOfRange
Slightly: avg(norm_fg_depar)=0, expected range: -0.02 0.02
amdar
IYHUOFBA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
FESEOHBA 146 Q (g/kg) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
0MJUNVBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -0.96 1.02
Severely: rms(fg_depar)=5, expected range: 0.00 1.45
O1VYFTRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.61
amsua
NOAA-18 AMSU-A 14 radiances : OutOfRange
16 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.31 -0.24
NOAA-19 AMSU-A 10 radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.24 0.34
Atmospheric Motion Vector
All NOAA-15 IR 0 40000 Missing
All NOAA-19 IR 0 40000 Missing
In-Situ measurements
All SYNOP RH2m (%s) WMO BLOCK 62 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 73 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 93 70000 101325 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 71 0 40000 Missing
TEMP Land Report Temperature (k) WMO BLOCK 14 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.13 1.59
All TEMP Land Report Temperature (k) 03 0 40000 Missing
All TEMP Land Report Temperature (k) 03 40000 70000 Missing
All TEMP Land Report Temperature (k) 03 70000 101325 Missing
All TEMP Land Report Temperature (k) 06 0 40000 Missing
All TEMP Land Report Temperature (k) 06 40000 70000 Missing
All TEMP Land Report Temperature (k) 06 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 71 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 71 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 71 70000 101325 Missing
All TEMP Land Report Wind Vector difference (m/s) WMO BLOCK 17 0 40000 Missing
SYNOP Surface pressure (Pa) WMO BLOCK 97 0 0 : OutOfRange
Considerably: rms(fg_depar)=135, expected range: 18.70 111.00
BUOYS
1501522 189 Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=61, expected range: 0.00 50.00
1601522 189 Surface pressure (Pa) : OutOfRange
39 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=99, expected range: 0.00 50.00
5401633 189 Surface pressure (Pa) : OutOfRange
21 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=65, expected range: 0.00 50.00
5601571 189 Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
ship
WDC7379 SHIP Report Wind Vector difference (m/s) : OutOfRange
18 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=85, expected range: 0.00 50.00
YJUP4 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
15 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=80, expected range: 0.00 50.00
9V9404 SHIP Report Surface pressure (Pa) : OutOfRange
21 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
VRRQ5 SHIP Report Surface pressure (Pa) : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=54, expected range: 0.00 50.00
synop
12550 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
60018 170 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
Radiosondes
72233 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=1, expected range: -0.40 0.99
14015 109 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-7, expected range: -1.07 0.82
Severely: rms(fg_depar)=7, expected range: 0.00 1.59
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
14015 109 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=9, expected range: 0.00 1.48
Severely: avg(fg_depar)=-8, expected range: -1.25 1.01
Considerably: freq(qc_pge)=85, expected range: 0.00 75.00
14015 109 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.08 1.41