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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-04-15 12:00

cris
NPP CrIS 645 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.32 0.42
NPP CrIS 653 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.29 0.38
NPP CrIS 657 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.28 0.37
Geostationary CSR
METEOSAT-8 55 3 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=1, expected range: 0.64 1.20
gpsro
COSMIC-1 setting RO bending angles 30-40 km : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg_n_fg_depar=0, expected range: -0.01 0.47
Slightly: stddev_n_fg_depar=1, expected range: 0.63 1.20
COSMIC-1 setting RO bending angles 40-50 km : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg_n_fg_depar=0, expected range: -0.07 0.23
Considerably: stddev_n_fg_depar=1, expected range: 0.16 0.89
All TERRA-SAR-X setting RO bending angles Missing
All TANDEM-X rising RO bending angles Missing
COSMIC-1 setting RO bending angles 0-10 km : OutOfRange
Considerably: stddev_n_fg_depar=0, expected range: 0.48 0.88
COSMIC-6 rising RO bending angles 30-40 km : OutOfRange
Considerably: avg_n_fg_depar=0, expected range: -0.01 0.44
COSMIC-1 setting RO bending angles 20-30 km : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg_n_fg_depar=0, expected range: -0.22 0.16
COSMIC-1 rising RO bending angles 10-20 km : OutOfRange
Slightly: stddev_n_fg_depar=0, expected range: 0.73 1.33
COSMIC-6 rising RO bending angles 20-30 km : OutOfRange
2 times in the last 10 days for at least one item
Slightly: avg_n_fg_depar=0, expected range: -0.18 0.09
COSMIC-6 rising RO bending angles 40-50 km : OutOfRange
Slightly: avg_n_fg_depar=0, expected range: -0.12 0.27
iasi
METOP-A IASI 92 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=0, expected range: 0.32 0.60
mhs
METOP-B MHS 3 allsky radiances : OutOfRange
10 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.41 0.60
METOP-A MHS 3 allsky radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.40 0.62
NOAA-18 MHS 3 allsky radiances : OutOfRange
17 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.33 0.54
Ozone
METOP-B GOME-2 layer ozone, top pressure 1 : OutOfRange
12 times in the last 10 days for at least one item
Considerably: stdev_fg_depar_du=6, expected range: 5.20 5.83
NOAA-19 SBUV layer ozone, top pressure 25430 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: stdev_fg_depar_du=4, expected range: 1.72 4.47
NOAA-19 SBUV layer ozone, top pressure 63940 : OutOfRange
17 times in the last 10 days for at least one item
Slightly: stdev_fg_depar_du=2, expected range: 1.30 2.27
AURA OMI layer ozone, top pressure 1 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg_fg_depar_du=1, expected range: -1.60 1.03
ssmis
DMSP-18 SSMIS 7 allsky radiances : OutOfRange
18 times in the last 10 days for at least one item
Severely: avg(biascorr)=5, expected range: 5.81 6.20
DMSP-18 SSMIS 6 allsky radiances : OutOfRange
Slightly: avg(biascorr)=4, expected range: 4.55 5.30
DMSP-18 SSMIS 11 allsky radiances : OutOfRange
5 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.13 0.04
airep
NAX7001 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
3 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=58, expected range: 0.00 50.00
NRS7151 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=73, expected range: 0.00 70.00
AAL151 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
ACA851 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
BAW281 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=88, expected range: 0.00 70.00
NRS7073 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
ACA825 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
UAL26 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=77, expected range: 0.00 70.00
ACA847 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=72, expected range: 0.00 70.00
AAL47 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=81, expected range: 0.00 70.00
UAL919 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=76, expected range: 0.00 70.00
BAW1YC AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=92, expected range: 0.00 70.00
amdar
NXFGUUBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=11, expected range: 0.00 7.30
4QKGWTRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: -0.42 6.60
UAKKFVZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=12, expected range: 0.00 8.00
CGCEOHBA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
RN1UOFJA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
SVWUOFJA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
XJSENXRA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 1.88
K4RWU1ZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=-6, expected range: -2.50 3.80
Severely: rms(fg_depar)=6, expected range: 0.00 4.10
Considerably: freq(qc_pge)=93, expected range: 0.00 70.00
3CBKB4ZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.73
CR4UOFZA 146 Q (g/kg) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
5XLIB3BA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.42
CT4EOHBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.43
G2UUOFJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.09 1.15
FICYFRJA 146 Temperature (k) 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=2, expected range: 0.00 1.33
L4VEOGRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.62 0.79
Severely: rms(fg_depar)=2, expected range: 0.00 1.52
4QKGWTRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.07 1.45
BRRUNVRA 146 Temperature (k) 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
XJSENXRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.72
NARIQXRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.79
JDAKCDZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.43
MX0022 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.00
EU6735 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.66
0XEHUNBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
0VVYQ2JA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.40
QIFUOFJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.09 2.10
QKWFUIJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -1.52 1.40
Severely: rms(fg_depar)=4, expected range: 0.00 2.80
HZKUNWJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.20
SMTENXJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.50
ECZGWTRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.50
LZCEOGZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.92
M5WEOGZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.80
MUJENVZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.40
NTQKG1BA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
5B5F5EBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=71, expected range: 0.00 70.00
CWWWAIBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
EGOZLAJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=72, expected range: 0.00 70.00
ULEEAHRA 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)=88, expected range: 0.00 70.00
G0Q0Q5ZA 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)=84, expected range: 0.00 70.00
In-Situ measurements
Land Automatic Report Surface pressure (Pa) WMO BLOCK 41 0 0 : OutOfRange
Severely: count(*)=64, expected range: 86.00 98.00
All SYNOP Surface pressure (Pa) WMO BLOCK 92 0 0 Missing
All AIREP Wind Vector difference (m/s) Asia 40000 70000 Missing
All AIREP Wind Vector difference (m/s) Asia 70000 101325 Missing
All AIREP Wind Vector difference (m/s) Indian Ocean 40000 70000 Missing
All AIREP Wind Vector difference (m/s) Indian Ocean 70000 101325 Missing
All Moored Buoy Surface pressure (Pa) WMO BLOCK 28 0 0 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 73 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 73 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 73 70000 101325 Missing
BUOYS
4601665 189 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=91, expected range: 0.00 70.00
1400567 189 Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
metar
KP53 METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=176, expected range: 0.00 102.00
KMCD METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=205, expected range: 0.00 117.00
CYZE METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=186, expected range: 0.00 120.00
KANJ METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=234, expected range: 0.00 102.00
KMGN METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=196, expected range: 0.00 121.00
VABO METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=327, expected range: 0.00 159.00
KISQ METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=171, expected range: 0.00 111.00
KCIU METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=234, expected range: 0.00 138.00
KSAW METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=190, expected range: 0.00 105.00
KERY METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=194, expected range: 0.00 105.00
CYXZ METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=177, expected range: 0.00 99.00
SVMI METAR 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
OIGK METAR 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
ship
V7BY3 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)=51, expected range: 0.00 50.00
C6KD9 SHIP Report Wind Vector difference (m/s) : OutOfRange
Severely_persistent: freq(qc_pge)=52, expected range: 0.00 50.00
9HA3553 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
VROB9 SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=56, expected range: 0.00 50.00
44009 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
Severely: avg(fg_depar)=9, expected range: -1.55 5.70
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)=83, expected range: 0.00 70.00
C6LG6 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
3ETA8 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
ZCDI4 SHIP 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
WUR8857 SHIP Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=91, expected range: 0.00 70.00
VTFG Automatic SHIP Report Surface pressure (Pa) : OutOfRange
9 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
94962 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
01089 170 Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
47189 Land Automatic Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
Radiosondes
98233 TEMP Land Report Q (g/kg) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
50774 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.60
72645 109 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
76595 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
70316 109 Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
01004 109 Q (g/kg) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
02836 109 Q (g/kg) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00