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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-04-18 12:00

gpsro
All COSMIC-6 rising RO bending angles Missing
amdar
UWMIR3JA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=9, expected range: 0.25 6.20
GJK0GBZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=9, expected range: 0.00 6.30
TN5GUUZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=10, expected range: -0.56 5.90
Severely: rms(fg_depar)=11, expected range: 0.00 6.40
IOOEOFBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.79 0.92
P5IEOGJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -1.36 0.51
Severely: rms(fg_depar)=3, expected range: 0.02 1.62
YWVENVJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.33
PO40GCRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.45
2LKUOGRA 146 Q (g/kg) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
EU0873 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.19
PIG0O4BA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -1.49 1.43
Severely: rms(fg_depar)=4, expected range: 0.00 1.92
IZEEOFBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.90
4RDJFLBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
ZDEZXBJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -1.47 1.33
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
5FSUOEZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.68
INJUOGZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -0.73 0.80
Severely: rms(fg_depar)=3, expected range: 0.00 1.79
GUYX2IZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.50
amsua
NOAA-19 AMSU-A 10 radiances : OutOfRange
1 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 AQUA cloudy WV 0 40000 Missing
In-Situ measurements
All PILOT Wind Vector difference (m/s) WMO BLOCK 61 0 40000 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 70 0 40000 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 94 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 02 0 40000 Missing
All TEMP SHIP Report Temperature (k) North Atlantic 0 40000 Missing
All TEMP SHIP Report Temperature (k) North Atlantic 40000 70000 Missing
All TEMP SHIP Report Temperature (k) North Atlantic 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 63 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 Missing
TEMP Land Report Q (g/kg) WMO BLOCK 53 0 40000 : OutOfRange
Slightly: count(*)=29, expected range: -1.04 28.00
BUOYS
1601522 189 Surface pressure (Pa) : OutOfRange
38 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=98, expected range: 0.00 50.00
5401633 189 Surface pressure (Pa) : OutOfRange
18 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=61, expected range: 0.00 50.00
5601571 189 Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
3101547 189 Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=85, expected range: 0.00 75.00
ship
V7AE7 SHIP Report Wind Vector difference (m/s) : OutOfRange
4 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=51, expected range: 0.00 50.00
WDC7379 SHIP Report Wind Vector difference (m/s) : OutOfRange
15 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=90, expected range: 0.00 50.00
YJUP4 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
12 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=81, expected range: 0.00 50.00
9V9404 SHIP Report Surface pressure (Pa) : OutOfRange
18 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
42020 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
EUCFR06 SHIP Report Wind Vector difference (m/s) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
EUCFR06 182 Wind Vector difference (m/s) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
synop
60018 170 Surface pressure (Pa) : OutOfRange
8 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
71648 170 Surface pressure (Pa) : OutOfRange
18 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
Radiosondes
74004 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=3, expected range: 0.00 2.40