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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-04-07 00:00

airs
AQUA AIRS 1111 radiances : DataMissing
AQUA AIRS 227 radiances : OutOfRange
11 times in the last 10 days for at least one item
Considerably: avg(biascorr)=0, expected range: -0.57 -0.54
gpsro
All TERRA-SAR-X setting RO bending angles Missing
All TANDEM-X rising RO bending angles Missing
mhs
NOAA-18 MHS 3 allsky radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.31 0.54
Ozone
NOAA-19 SBUV layer ozone, top pressure 10130 : OutOfRange
4 times in the last 10 days for at least one item
Slightly: avg_fg_depar_du=2, expected range: -0.52 2.37
NOAA-19 SBUV layer ozone, top pressure 63940 : OutOfRange
7 times in the last 10 days for at least one item
Slightly: stdev_fg_depar_du=2, expected range: 1.00 2.27
ssmis
DMSP-17 SSMIS 1 allsky radiances : OutOfRange
Slightly: avg(norm_fg_depar)=0, expected range: -0.01 0.01
DMSP-18 SSMIS 1 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=10567, expected range: 10700.00 15900.00
DMSP-18 SSMIS 4 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=15972, expected range: 16300.00 30000.00
DMSP-18 SSMIS 5 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=16060, expected range: 16400.00 30000.00
DMSP-18 SSMIS 6 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=19046, expected range: 19500.00 29000.00
DMSP-18 SSMIS 7 allsky radiances : OutOfRange
4 times in the last 10 days for at least one item
Slightly: count(*)=18722, expected range: 19200.00 29000.00
Slightly: avg(biascorr)=5, expected range: 5.81 6.50
DMSP-18 SSMIS 9 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=14358, expected range: 14800.00 22000.00
DMSP-18 SSMIS 10 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=18804, expected range: 19200.00 29000.00
DMSP-18 SSMIS 11 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=18776, expected range: 19200.00 29000.00
DMSP-18 SSMIS 12 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=14573, expected range: 15000.00 22000.00
DMSP-18 SSMIS 13 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=14612, expected range: 15000.00 22000.00
DMSP-18 SSMIS 14 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=14571, expected range: 15000.00 22000.00
DMSP-18 SSMIS 15 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=14225, expected range: 14600.00 21000.00
DMSP-18 SSMIS 16 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=14366, expected range: 14700.00 22000.00
DMSP-18 SSMIS 17 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=14445, expected range: 14900.00 22000.00
DMSP-18 SSMIS 18 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=14520, expected range: 14900.00 22000.00
amdar
SH5YESBA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.86
SZDXOCRA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
EFNUILZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.20 0.91
OOOITPZA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
0MSWUWJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.84
ZMTEOGRA 146 Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
EU0676 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.03 1.74
OGKUNVJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
U0QEOFRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.22 1.64
In-Situ measurements
TEMP Land Report Temperature (k) WMO BLOCK 12 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=283, expected range: 350.00 390.00
All SYNOP Surface pressure (Pa) WMO BLOCK 92 0 0 Missing
All European Wind Profiler Wind Vector difference (m/s) WMO BLOCK 11 0 400 Missing
All Land Automatic Report Surface pressure (Pa) WMO BLOCK 62 0 0 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 62 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 62 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 62 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 63 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 63 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 63 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 Missing
PILOT Wind Vector difference (m/s) WMO BLOCK 72 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: count(*)=98, expected range: 280.00 810.00
TEMP Land Report Temperature (k) WMO BLOCK 12 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: count(*)=295, expected range: 330.00 400.00
European Wind Profiler Wind Vector difference (m/s) 07 0 40000 : OutOfRange
Slightly: avg(fg_depar)=7, expected range: 1.12 6.90
TEMP Land Report Temperature (k) WMO BLOCK 45 0 40000 : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.11 0.64
AIREP Wind Vector difference (m/s) South Pacific 0 40000 : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=1000, expected range: 171.00 840.00
AMDAR Wind Vector difference (m/s) North Atlantic 70000 101325 : OutOfRange
Slightly: rms(fg_depar)=4, expected range: 1.94 4.80
BUOYS
5401581 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=150, expected range: 0.00 83.00
4401613 189 Surface pressure (Pa) : OutOfRange
Severely: avg(fg_depar)=-382, expected range: -72.00 141.00
Severely: rms(fg_depar)=383, expected range: 0.00 154.00
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
metar
KDOV METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=229, expected range: 0.00 139.00
KROW METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=267, expected range: 0.00 176.00
MMMZ METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=278, expected range: 0.00 135.00
OPSD METAR Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=77, expected range: 0.00 70.00
ship
V7BY3 SHIP Report Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=64, expected range: 0.00 50.00
WDJ7294 SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=79, expected range: 0.00 50.00
9HA3667 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 70.00
42059 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
synop
40942 SYNOP Surface pressure (Pa) : OutOfRange
19 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
25123 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
89817 Land Automatic Report 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 70.00
04169 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Radiosondes
47741 TEMP Land Report Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.42