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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

Early delivery 4D-VAR at 2019-01-14 00:00

cris
NPP CrIS 21 radiances : OutOfRange
5 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.06 0.18
NPP CrIS 22 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.17 0.27
NOAA-20 CrIS 981 radiances : OutOfRange
6 times in the last 10 days for at least one item
Slightly: count(*)=5602, expected range: 2.00 5203.00
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
amdar
AU0150 AMDAR Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
EKOYJ0RA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 0.98
H3VVJNRA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.08
AU0150 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
HMP0EVRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.35
EU6401 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
Atmospheric Motion Vector
All NPP IR 0 40000 Missing
All AQUA IR 0 40000 Missing
METEOSAT-11 VIS2 70000 110000 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=1, expected range: 2.00 14.80
NOAA-15 IR 70000 110000 : OutOfRange
Slightly: count(*)=1, expected range: 2.00 14.40
NOAA-18 IR 70000 110000 : OutOfRange
Slightly: count(*)=12, expected range: 2.00 11.90
In-Situ measurements
All SYNOP RH2m (%s) WMO BLOCK 28 70000 101325 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 70 0 40000 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 87 0 40000 Missing
All Japanese Wind Profiler Wind Vector difference (m/s) WMO BLOCK 47 0 400 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 61 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 61 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 61 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 76 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 87 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 87 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 87 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 88 0 40000 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
All TEMP Land Report Q (g/kg) WMO BLOCK 26 0 40000 Missing
TEMP Land Report Q (g/kg) WMO BLOCK 12 40000 70000 : OutOfRange
Considerably: count(*)=217, expected range: 240.00 320.00
Land Automatic Report Surface pressure (Pa) WMO BLOCK 15 0 0 : OutOfRange
Slightly: count(*)=8, expected range: -3.20 7.30
BUOYS
5501504 189 Surface pressure (Pa) : OutOfRange
12 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
4601664 189 Surface pressure (Pa) : OutOfRange
12 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
pilot
61660 PILOT 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)=51, expected range: 0.00 50.00
42874 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=12, expected range: 0.66 5.40
Severely: rms(fg_depar)=13, expected range: 0.77 6.10
ship
D5TB2 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)=66, expected range: 0.00 50.00
62149 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
5 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
EUCFR02 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
63055 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
WDE8761 SHIP Report Surface pressure (Pa) : OutOfRange
7 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
62132 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
8 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
EUCFR08 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
synop
68116 Land Automatic Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=86, expected range: 0.00 50.00
37801 SYNOP Surface pressure (Pa) : OutOfRange
Severely_persistent: freq(qc_pge)=51, expected range: 0.00 50.00
08201 170 Surface pressure (Pa) : OutOfRange
24 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=70, expected range: 0.00 50.00
33135 170 Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=91, expected range: 0.00 50.00
12510 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
16271 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 75.00
Radiosondes
42874 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: 1.51 6.30
Severely: rms(fg_depar)=10, expected range: 1.55 7.40
58968 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=13, expected range: 0.00 8.60
12374 109 Q (g/kg) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00