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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-01-13 18:00

cris
NOAA-20 CrIS 981 radiances : OutOfRange
5 times in the last 10 days for at least one item
Slightly: count(*)=6086, expected range: 2.00 5203.00
gpsro
All COSMIC-1 setting RO bending angles Missing
All COSMIC-1 rising RO bending angles Missing
All COSMIC-6 rising RO bending angles Missing
Ozone
METOP-B GOME-2 layer ozone, top pressure 1 : OutOfRange
Slightly: count(*)=8470, expected range: 13100.00 41000.00
airep
RAM208 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
amdar
HBGWUFZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=6, expected range: 0.84 4.40
Atmospheric Motion Vector
All NPP IR 0 40000 Missing
All AQUA IR 0 40000 Missing
In-Situ measurements
All Land Automatic Report RH2m (%s) 06 70000 101325 Missing
All Land Automatic Report RH2m (%s) WMO BLOCK 11 70000 101325 Missing
All Land Automatic Report RH2m (%s) WMO BLOCK 12 70000 101325 Missing
All SYNOP RH2m (%s) 01 70000 101325 Missing
All SYNOP RH2m (%s) 04 70000 101325 Missing
All SYNOP RH2m (%s) 06 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 10 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 11 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 14 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 16 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 25 70000 101325 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 71 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 01 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 08 0 40000 Missing
All Japanese Wind Profiler Wind Vector difference (m/s) WMO BLOCK 47 0 400 Missing
All TEMP Land Report Temperature (k) 02 0 40000 Missing
All TEMP Land Report Temperature (k) 02 40000 70000 Missing
All TEMP Land Report Temperature (k) 02 70000 101325 Missing
All TEMP Land Report Temperature (k) 04 0 40000 Missing
All TEMP Land Report Temperature (k) 04 40000 70000 Missing
All TEMP Land Report Temperature (k) 04 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
BUOYS
5501504 189 Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
ship
D5TB2 SHIP Report Wind Vector difference (m/s) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=61, expected range: 0.00 50.00
VRID6 SHIP Report Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=53, expected range: 0.00 50.00
WCF3012 SHIP Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
62149 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
63115 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
EUCFR03 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
WDE8761 SHIP Report Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
synop
68116 Land Automatic Report Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=86, expected range: 0.00 50.00
08201 170 Surface pressure (Pa) : OutOfRange
23 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=68, expected range: 0.00 50.00
33135 170 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=86, expected range: 0.00 50.00
06680 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
06204 170 Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00