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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-01-15 12:00

cris
NOAA-20 CrIS 981 radiances : OutOfRange
12 times in the last 10 days for at least one item
Slightly: count(*)=6182, 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
AFZA45 AMDAR Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.38
T0TKWCBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: -0.51 5.60
Severely: rms(fg_depar)=11, expected range: 0.00 6.30
LZ5UOGJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=9, expected range: -0.36 5.80
OO1EOGZA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
0OJ0GDBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=1, expected range: -1.46 0.43
HL7716 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=2, expected range: -1.10 0.84
5SUEOGBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.76
GLQJD0JA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
Atmospheric Motion Vector
All AQUA IR 0 40000 Missing
AQUA clear WV 0 40000 : OutOfRange
Slightly: count(*)=1, expected range: 2.00 119.00
In-Situ measurements
Land Automatic Report Surface pressure (Pa) WMO BLOCK 12 0 0 : OutOfRange
Severely: count(*)=4, expected range: 76.00 156.00
All Land Automatic Report Surface pressure (Pa) WMO BLOCK 72 0 0 Missing
SYNOP Surface pressure (Pa) WMO BLOCK 33 0 0 : OutOfRange
Severely: count(*)=200, expected range: 90.00 112.00
All SYNOP RH2m (%s) WMO BLOCK 23 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 36 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 44 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 51 70000 101325 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 91 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 02 0 40000 Missing
All TEMP SHIP Report Temperature (k) North America 0 40000 Missing
All TEMP SHIP Report Temperature (k) North America 40000 70000 Missing
All TEMP SHIP Report Temperature (k) North America 70000 101325 Missing
All TEMP Land Report Q (g/kg) WMO BLOCK 13 0 40000 Missing
All TEMP Land Report Q (g/kg) WMO BLOCK 27 0 40000 Missing
BUOYS
7401505 189 Surface pressure (Pa) : OutOfRange
17 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=63, expected range: 0.00 50.00
6301564 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 75.00
pilot
42724 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=11, expected range: 0.62 6.10
Severely: rms(fg_depar)=13, expected range: 0.60 7.00
43295 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: -0.05 6.50
Severely: rms(fg_depar)=14, expected range: 0.00 7.40
ship
VRUR7 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
LF4Q 182 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
WDE8761 SHIP Report Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
synop
47639 Land Automatic Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
17100 SYNOP 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 75.00
12510 170 Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
08156 170 Surface pressure (Pa) : OutOfRange
15 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
Radiosondes
43295 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=13, expected range: 0.97 6.50
Severely: rms(fg_depar)=17, expected range: 1.21 7.40
42724 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=7, expected range: 0.13 3.20
72456 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 3.00
71802 109 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=11, expected range: 1.20 5.90
Severely: rms(fg_depar)=12, expected range: 1.26 7.00
42724 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: 1.59 6.90
Severely: rms(fg_depar)=11, expected range: 1.55 8.10