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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-01-17 00:00

airs
AQUA AIRS 207 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.19 -0.15
cris
NPP CrIS 161 radiances : OutOfRange
12 times in the last 10 days for at least one item
Severely: avg(biascorr)=0, expected range: -0.19 -0.18
NPP CrIS 116 radiances : OutOfRange
5 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.41 -0.37
NPP CrIS 117 radiances : OutOfRange
6 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.35 -0.32
NPP CrIS 119 radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.22 -0.19
NPP CrIS 134 radiances : OutOfRange
7 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.34 -0.31
NPP CrIS 137 radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.21 -0.18
NPP CrIS 139 radiances : OutOfRange
6 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.18 -0.15
NPP CrIS 140 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.22 -0.19
NPP CrIS 141 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.15 -0.12
gpsro
COSMIC-1 rising RO bending angles 40-50 km : OutOfRange
Slightly: avg_n_fg_depar=0, expected range: -0.19 0.27
amdar
SL0126 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.23
AU0126 AMDAR Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=4, expected range: -1.05 1.54
Severely: rms(fg_depar)=4, expected range: 0.00 1.55
EU0884 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.33
AU0126 AMDAR Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=2, expected range: -1.02 0.76
Severely: rms(fg_depar)=2, expected range: 0.00 1.57
SL0148 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -1.08 1.16
Severely: rms(fg_depar)=4, expected range: 0.00 1.49
FKTTWDJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=87, expected range: 0.00 70.00
Atmospheric Motion Vector
GOES-15 VIS1 70000 110000 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=5083, expected range: 1030.00 4900.00
In-Situ measurements
All PILOT Wind Vector difference (m/s) WMO BLOCK 68 0 40000 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 93 0 40000 Missing
SYNOP Surface pressure (Pa) WMO BLOCK 97 0 0 : OutOfRange
Considerably: rms(fg_depar)=133, expected range: 30.00 102.00
TEMP Land Report Temperature (k) WMO BLOCK 98 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: rms(fg_depar)=2, expected range: 0.04 1.81
SYNOP Surface pressure (Pa) WMO BLOCK 10 0 0 : OutOfRange
Slightly: rms(fg_depar)=107, expected range: 0.00 103.00
SYNOP Surface pressure (Pa) WMO BLOCK 26 0 0 : OutOfRange
Slightly: rms(fg_depar)=87, expected range: 0.00 87.00
Land Automatic Report Surface pressure (Pa) WMO BLOCK 12 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: rms(fg_depar)=109, expected range: 0.00 102.00
Moored Buoy Surface pressure (Pa) WMO BLOCK 62 0 0 : OutOfRange
Slightly: rms(fg_depar)=167, expected range: 0.00 151.00
TEMP Land Report Temperature (k) 07 40000 70000 : OutOfRange
Slightly: rms(fg_depar)=2, expected range: 0.00 1.93
TEMP Land Report Temperature (k) WMO BLOCK 96 70000 101325 : OutOfRange
Slightly: count(*)=238, expected range: 58.00 210.00
TEMP Land Report Wind Vector difference (m/s) WMO BLOCK 23 0 40000 : OutOfRange
Slightly: rms(fg_depar)=7, expected range: 0.77 7.40
BUOYS
4401606 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=339, expected range: 0.00 158.00
2301556 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=247, expected range: 0.00 114.00
2301560 189 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
4101742 189 Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=90, expected range: 0.00 70.00
6200093 Moored Buoy Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
21598 Drifter Buoy Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
metar
KFOA METAR Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely: avg(fg_depar)=760, expected range: -210.00 290.00
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
EYPA METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=134, expected range: 0.00 89.00
LIBD METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=208, expected range: 0.00 135.00
EGRW METAR Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=70, expected range: 0.00 70.00
ship
SDIA Automatic SHIP Report Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=77, expected range: 0.00 50.00
9V9040 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=91, expected range: 0.00 70.00
42045 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=88, expected range: 0.00 70.00
42365 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
6 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
VRRB5 SHIP Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
synop
97530 SYNOP Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
07770 170 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 70.00
15261 170 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=88, expected range: 0.00 70.00
13571 SYNOP Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
16263 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
04373 170 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 70.00
14544 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
Radiosondes
23472 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=16, expected range: -4.10 9.20
Severely: rms(fg_depar)=23, expected range: 0.00 11.50
11120 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.32 0.67
34122 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=7, expected range: 0.00 4.40
10954 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.14 0.84
48845 TEMP Land Report Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
14240 TEMP Land Report Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.93
70261 109 Q (g/kg) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
71913 109 Q (g/kg) 70000 101325 : 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
98223 TEMP Land Report Temperature (k) 40000 70000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00

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