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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2017-05-23 00:00

airs
AQUA AIRS 355 radiances : OutOfRange
20 times in the last 10 days for at least one item
Considerably: avg(biascorr)=0, expected range: -0.83 -0.77
AQUA AIRS 186 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.44 -0.37
Geostationary CSR
GOES-13 GOES-13 3 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.43 -0.12
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
iasi
METOP-B IASI 3375 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.40 0.51
METOP-A IASI 3375 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.41 0.52
mhs
METOP-A MHS 5 allsky radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.39 -0.28
mwhs
FY-3B MWHS 5 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.98 -0.74
Ozone
METOP-B GOME-2 layer ozone, top pressure 1 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: avg_biascorr_du=-4, expected range: -4.39 -3.50
Slightly: stdev_fg_depar_du=6, expected range: 4.90 6.10
NOAA-19 SBUV layer ozone, top pressure 63940 : OutOfRange
14 times in the last 10 days for at least one item
Slightly: stdev_fg_depar_du=2, expected range: 1.12 2.10
ssmis
DMSP-18 SSMIS 2 allsky radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=3801, expected range: 4300.00 6400.00
DMSP-18 SSMIS 4 allsky radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=9338, expected range: 10200.00 15700.00
DMSP-18 SSMIS 5 allsky radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=9279, expected range: 10100.00 15600.00
DMSP-18 SSMIS 6 allsky radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=16846, expected range: 18400.00 29000.00
gmi
GPM GMI 5 allsky radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.30 1.25
airep
UAL987 AIREP Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=5, expected range: 0.00 2.60
DAL1559 AIREP Temperature (k) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
amdar
0UZUOGBA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
BCFEOHBA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
APEYFEJA 146 Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=-4, expected range: -0.78 0.68
Severely: rms(fg_depar)=4, expected range: 0.00 1.92
APEYFEJA 146 Temperature (k) 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=-6, expected range: -0.87 0.87
Severely: rms(fg_depar)=6, expected range: 0.06 1.33
Considerably: freq(qc_pge)=92, expected range: 0.00 70.00
APEYFEJA 146 Temperature (k) 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=-7, expected range: -1.86 1.50
Severely: rms(fg_depar)=7, expected range: 0.03 2.10
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
In-Situ measurements
All Moored Buoy Surface pressure (Pa) WMO BLOCK 53 0 0 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 67 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 Missing
Drifter Buoy Surface pressure (Pa) WMO BLOCK 73 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: count(*)=48, expected range: 53.00 66.00
TEMP Land Report Temperature (k) WMO BLOCK 43 40000 70000 : OutOfRange
Slightly: rms(fg_depar)=1, expected range: 0.00 1.75
TEMP Land Report Temperature (k) WMO BLOCK 47 40000 70000 : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=444, expected range: 490.00 1050.00
TEMP Land Report Temperature (k) WMO BLOCK 47 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=459, expected range: 460.00 1040.00
BUOYS
5601602 189 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=70, expected range: 0.00 50.00
5500611 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 70.00
metar
SAAR METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=300, expected range: 0.00 193.00
ship
BATFR45 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
13 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
VRDU9 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)=95, expected range: 0.00 50.00
BAREU51 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
Severely_persistent: freq(qc_pge)=83, expected range: 0.00 50.00
C6FM5 SHIP Report Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=66, expected range: 0.00 50.00
WLPI SHIP Report Surface pressure (Pa) : OutOfRange
7 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=65, expected range: 0.00 50.00
46059 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=148, expected range: 0.00 91.00
PHET SHIP Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
synop
71114 170 Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=64, expected range: 0.00 50.00
68196 Land Automatic Report Surface pressure (Pa) : OutOfRange
9 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=71, expected range: 0.00 50.00
16121 170 Surface pressure (Pa) : OutOfRange
Severely: avg(fg_depar)=-627, expected range: -144.00 137.00
Severely: rms(fg_depar)=627, expected range: 0.00 126.00
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
71370 170 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
44404 SYNOP RH2m (%s) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Radiosondes
72240 TEMP Land Report Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
72293 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=2, expected range: -0.39 0.80
17196 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.33 2.20
72240 TEMP Land Report Q (g/kg) 40000 70000 : OutOfRange
Considerably: freq(qc_pge)=82, expected range: 0.00 70.00

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