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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-02-21 12:00

airs
AQUA AIRS 56 radiances : OutOfRange
12 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.59 -0.26
AQUA AIRS 78 radiances : OutOfRange
18 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -1.06 -0.80
AQUA AIRS 79 radiances : OutOfRange
17 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.80 -0.57
AQUA AIRS 84 radiances : OutOfRange
16 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.37 -0.15
AQUA AIRS 86 radiances : OutOfRange
11 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.09 0.12
AQUA AIRS 248 radiances : OutOfRange
20 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.17 -0.04
cris
128 NPP CrIS 1 radiances have reduced counts (see example): OutOfRange
Severely: count(*)=16861, expected range: 21000.00 23000.00
gpsro
All COSMIC-1 setting RO bending angles Missing
All COSMIC-1 rising RO bending angles Missing
iasi
METOP-B IASI 95 radiances : OutOfRange
14 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.98 -0.68
METOP-A IASI 101 radiances : OutOfRange
15 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.16 0.05
Ozone
METOP-B GOME-2 layer ozone, top pressure 1 : OutOfRange
3 times in the last 10 days for at least one item
Slightly: stdev_fg_depar_du=6, expected range: 4.10 5.83
airep
BAW225 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=10, expected range: 0.20 6.60
UAL56 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=11, expected range: 0.62 5.90
AVA120 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
amdar
AU0121 AMDAR Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: -0.17 6.50
Severely: rms(fg_depar)=11, expected range: 0.00 7.50
PKEUOGRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=9, expected range: -0.40 6.00
4XRCA4BA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.61
WKDUOFBA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
N220JHBA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.20
PY4HGMBA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.79
3YGWROBA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.07
IKWWUUBA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.33
DGHKGBJA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.30
QIFUOFJA 146 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.57 0.52
NQ0UOGJA 146 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.58 0.53
Severely: rms(fg_depar)=2, expected range: 0.00 1.40
4U1UNVRA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.72
RCNGUUZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.88
CL0UOHBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.20
2CEUNVJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.09
1WTENVRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.40
4U1UNVRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.36
SKWEIJZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.07 1.00
D53UILJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.30
SBFTZDBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=85, expected range: 0.00 70.00
AQ5IERBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
CUZQPNJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=79, expected range: 0.00 70.00
SJKRTPRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
5J10GBZA 146 Temperature (k) 70000 101325 : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
In-Situ measurements
SYNOP Surface pressure (Pa) WMO BLOCK 71 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=36, expected range: 2400.00 2600.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 16 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=510, expected range: 590.00 720.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 17 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=233, expected range: 300.00 410.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 23 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=387, expected range: 520.00 630.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 32 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=117, expected range: 220.00 330.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 46 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=246, expected range: 480.00 590.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 51 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=15, expected range: 26.00 42.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 62 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=234, expected range: 270.00 330.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 74 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=10, expected range: 24.00 25.00
All European Wind Profiler Wind Vector difference (m/s) WMO BLOCK 11 0 400 Missing
All Land Automatic Report Surface pressure (Pa) WMO BLOCK 71 0 0 Missing
All Drifter Buoy Surface pressure (Pa) WMO BLOCK 45 0 0 Missing
All Moored Buoy Surface pressure (Pa) WMO BLOCK 23 0 0 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 93 0 40000 Missing
Drifter Buoy Surface pressure (Pa) WMO BLOCK 15 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: count(*)=268, expected range: 360.00 570.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 21 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: count(*)=439, expected range: 530.00 800.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 55 0 0 : OutOfRange
3 times in the last 10 days for at least one item
Considerably: count(*)=168, expected range: 230.00 380.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 73 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: count(*)=27, expected range: 31.00 40.00
SHIP Surface pressure (Pa) North Pacific 1 1 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: count(*)=791, expected range: 870.00 1090.00
Land Automatic Report Surface pressure (Pa) 06 0 0 : OutOfRange
Slightly: count(*)=47, expected range: -8.60 38.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 31 0 0 : OutOfRange
Slightly: rms(fg_depar)=107, expected range: 2.00 93.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 47 0 0 : OutOfRange
3 times in the last 10 days for at least one item
Slightly: count(*)=12, expected range: 51.00 210.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 52 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=46, expected range: 53.00 127.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 53 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=25, expected range: 31.00 105.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 54 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=393, expected range: 490.00 1030.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 56 0 0 : OutOfRange
5 times in the last 10 days for at least one item
Slightly: count(*)=159, expected range: 220.00 770.00
AMDAR Temperature (k) North America 0 40000 : OutOfRange
Slightly: rms(fg_depar)=1, expected range: 0.48 1.13
AMDAR Temperature (k) North Atlantic 0 40000 : OutOfRange
Slightly: rms(fg_depar)=1, expected range: 0.63 1.05
BUOYS
4100597 189 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=275, expected range: 0.00 134.00
3301530 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
SBJP METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=237, expected range: 0.00 124.00
ship
9V9040 SHIP Report Wind Vector difference (m/s) : OutOfRange
6 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=57, expected range: 0.00 50.00
41043 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=148, expected range: 0.00 83.00
DBBE Automatic SHIP Report Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=227, expected range: 0.00 131.00
WDB3161 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
42361 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
synop
72314 170 Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=52, expected range: 0.00 50.00
04158 170 Surface pressure (Pa) : OutOfRange
18 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=87, expected range: 0.00 50.00
94683 170 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=158, expected range: 0.00 90.00
07570 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
08271 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 70.00
68272 Land Automatic Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
08345 170 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
Radiosondes
48820 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
74004 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=5, expected range: 0.00 3.10
71816 TEMP Land Report Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
94866 109 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
71823 TEMP Land Report Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
72265 109 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.44
72528 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
SOCR3 TEMP SHIP Report Q (g/kg) 70000 101325 : OutOfRange
2 times in the last 10 days for at least one item
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
SOCRATES 111 Q (g/kg) 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
56964 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00