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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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.

Delayed cut-off 4DVAR at 2019-04-15 12:00

cris
All NPP CrIS radiances Missing
gpsro
All TANDEM-X rising RO bending angles Missing
All COSMIC-1 setting RO bending angles Missing
All COSMIC-1 rising RO bending angles Missing
All COSMIC-6 rising RO bending angles Missing
All TERRA-SAR-X setting RO bending angles Missing
ssmis
DMSP-18 SSMIS 5 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=2, expected range: 2.50 3.10
airep
ACA849 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=11, expected range: -0.94 6.80
Severely: rms(fg_depar)=15, expected range: 0.00 10.00
VIR155M AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=77, expected range: 0.00 75.00
amdar
EU4075 146 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=1, expected range: -0.63 0.62
Severely: rms(fg_depar)=1, expected range: 0.00 0.99
EU0166 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
OD1KJHRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
FIU1ADZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
amsua
METOP-A AMSU-A 14 radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.24 0.35
NOAA-15 AMSU-A 9 radiances : OutOfRange
9 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.07 0.18
Atmospheric Motion Vector
AQUA clear WV 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(press)=300, expected range: 301.02 430.00
In-Situ measurements
All SYNOP RH2m (%s) WMO BLOCK 32 70000 101325 Missing
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 European Wind Profiler Wind Vector difference (m/s) 01 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 02 0 40000 Missing
TEMP Land Report Temperature (k) WMO BLOCK 13 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.03 1.04
All TEMP Land Report Temperature (k) WMO BLOCK 64 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 64 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 64 70000 101325 Missing
AMDAR Wind Vector difference (m/s) North Atlantic 70000 101325 : OutOfRange
Severely: rms(fg_depar)=6, expected range: 1.93 4.60
AMDAR Wind Vector difference (m/s) North Atlantic 40000 70000 : OutOfRange
Considerably: rms(fg_depar)=6, expected range: 0.96 4.90
Land Automatic Report Surface pressure (Pa) 02 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=16, expected range: 1.55 13.40
BUOYS
1601522 189 Surface pressure (Pa) : OutOfRange
19 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=98, expected range: 0.00 50.00
2301610 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=130, expected range: 0.00 83.00
4401551 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=209, expected range: 0.00 105.00
5401583 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=207, expected range: 0.00 114.00
3301615 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=226, expected range: 0.00 140.00
7400540 189 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
metar
KSBD METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=215, expected range: 0.00 90.00
VABO METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=265, expected range: 0.00 153.00
SACO METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=196, expected range: 0.00 121.00
VAPR METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=299, expected range: 0.00 148.00
ship
VRNS2 SHIP Report Wind Vector difference (m/s) : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=73, expected range: 0.00 50.00
9V9404 SHIP Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=96, expected range: 0.00 50.00
WMKA SHIP Report Surface pressure (Pa) : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=78, expected range: 0.00 50.00
9HA3062 SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=95, expected range: 0.00 50.00
V7UT6 SHIP Report Surface pressure (Pa) : OutOfRange
Severely_persistent: freq(qc_pge)=91, expected range: 0.00 50.00
VRRD7 SHIP Report Surface pressure (Pa) : OutOfRange
7 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=73, expected range: 0.00 50.00
9V9399 SHIP Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=85, expected range: 0.00 50.00
V7AE7 SHIP Report Wind Vector difference (m/s) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
9V9290 SHIP Report Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
V7AE7 SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=81, expected range: 0.00 75.00
9V3867 SHIP Report Wind Vector difference (m/s) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
synop
42931 SYNOP Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=58, expected range: 0.00 50.00
87371 SYNOP Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=196, expected range: 0.00 113.00
89662 Land Automatic Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=91, expected range: 0.00 75.00
08166 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
Radiosondes
31736 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=5, expected range: 0.73 4.00
Severely: rms(fg_depar)=7, expected range: 0.71 4.70
07110 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.27 0.85
72251 109 Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=3, expected range: 0.05 2.10
Severely: avg(fg_depar)=3, expected range: -0.49 0.91
72251 109 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=4, expected range: -0.68 1.25
Severely: rms(fg_depar)=4, expected range: 0.00 1.85
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
78954 109 Q (g/kg) 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
13275 109 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.29
74389 109 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
7JUNA4N 111 Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=2, expected range: 0.00 1.61
7JUNA4N 111 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
71603 TEMP Land Report Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00