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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-04-16 00:00

gpsro
COSMIC-6 rising 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 0.44
COSMIC-6 rising 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: -0.12 0.27
All TERRA-SAR-X setting RO bending angles Missing
All TANDEM-X rising RO bending angles Missing
All COSMIC-1 setting RO bending angles Missing
All COSMIC-1 rising RO bending angles Missing
COSMIC-6 rising RO bending angles 20-30 km : OutOfRange
3 times in the last 10 days for at least one item
Considerably: avg_n_fg_depar=0, expected range: -0.25 0.14
COSMIC-6 rising RO bending angles 0-10 km : OutOfRange
1 times in the last 10 days for at least one item
Slightly: stddev_n_fg_depar=0, expected range: 0.39 0.96
iasi
METOP-B IASI 2239 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.37 -0.32
METOP-A IASI 1479 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=0, expected range: 0.35 0.45
METOP-A IASI 5455 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: 0.39 0.48
mhs
METOP-B MHS 3 allsky radiances : OutOfRange
11 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.42 0.60
NOAA-18 MHS 3 allsky radiances : OutOfRange
18 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.34 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 63940 : OutOfRange
17 times in the last 10 days for at least one item
Considerably: stdev_fg_depar_du=2, expected range: 1.40 2.27
NOAA-19 SBUV layer ozone, top pressure 10130 : OutOfRange
7 times in the last 10 days for at least one item
Slightly: avg_fg_depar_du=2, expected range: -0.08 2.37
Slightly: stdev_fg_depar_du=6, expected range: 4.30 5.96
ssmis
DMSP-18 SSMIS 7 allsky radiances : OutOfRange
18 times in the last 10 days for at least one item
Considerably: avg(biascorr)=5, expected range: 5.81 6.20
DMSP-18 SSMIS 11 allsky radiances : OutOfRange
6 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.13 0.04
airep
VIR106 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
amdar
SL0140 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.17
SL0112 146 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=2, expected range: -0.76 0.94
Severely: rms(fg_depar)=4, expected range: 0.00 1.18
SL0117 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.15
BSTXQVBA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
DQPFAXBA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
KLXEOGJA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
CELIXOBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.31
DQPFAXBA 146 Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
5G1IQ2JA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.04 1.21
F4WEILJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.37
SYZENXJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.12 1.07
DGNXL5RA 146 Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
PBBUOGRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.64 0.76
UIEYYTRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.22
EFEENVRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.23
0FWUNVRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.40
EESIENZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.03 1.44
HYNENWZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.43
IWE0O4JA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
PHSEIEJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.85
M2NXOARA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.45 1.63
1RSKZGZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.40
R2YY1YRA 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)=100, expected range: 0.00 70.00
K4RWU1ZA 146 Temperature (k) 70000 101325 : OutOfRange
Considerably: freq(qc_pge)=70, expected range: 0.00 70.00
In-Situ measurements
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 PILOT Wind Vector difference (m/s) WMO BLOCK 68 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 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
All TEMP Land Report Temperature (k) WMO BLOCK 88 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 88 70000 101325 Missing
SYNOP Surface pressure (Pa) WMO BLOCK 98 0 0 : OutOfRange
Slightly: count(*)=134, expected range: 149.00 210.00
TEMP Land Report Temperature (k) WMO BLOCK 23 0 40000 : OutOfRange
Slightly: avg(fg_depar)=-1, expected range: -0.98 0.76
BUOYS
3300574 189 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=72, expected range: 0.00 70.00
1400567 189 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
7101508 189 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=90, expected range: 0.00 70.00
metar
DAUA METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=582, expected range: 0.00 310.00
KRQB METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=177, expected range: 0.00 115.00
KBFD METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=265, expected range: 0.00 171.00
KSHD METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=292, expected range: 0.00 193.00
KJYO METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=288, expected range: 0.00 186.00
KRNP METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=188, expected range: 0.00 123.00
KMOP METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=189, expected range: 0.00 121.00
KCFS METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=208, expected range: 0.00 117.00
KDET METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=200, expected range: 0.00 131.00
KBAX METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=258, expected range: 0.00 156.00
KHYX METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=193, expected range: 0.00 126.00
SVMI METAR 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
ship
V7BY3 SHIP Report Wind Vector difference (m/s) : OutOfRange
3 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=52, expected range: 0.00 50.00
46004 Automatic 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)=73, expected range: 0.00 50.00
PHET SHIP Report Wind Vector difference (m/s) : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=52, expected range: 0.00 50.00
VROB9 SHIP Report Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=59, expected range: 0.00 50.00
VTFG Automatic SHIP Report Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=51, expected range: 0.00 50.00
42056 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
Severely: avg(fg_depar)=4, expected range: -0.21 2.80
Severely: rms(fg_depar)=4, expected range: 0.00 3.10
46100 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)=100, expected range: 0.00 70.00
9HXD9 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
VCXF SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
V7BY3 SHIP Report 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
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
91650 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
94893 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
38836 SYNOP Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Radiosondes
23884 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=-4, expected range: -1.18 2.70
72402 TEMP Land Report Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
72305 TEMP Land Report Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
72786 109 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -1.46 1.52
Severely: rms(fg_depar)=3, expected range: 0.00 1.75
23884 TEMP Land Report Temperature (k) 70000 101325 : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00