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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-01-17 06:00

cris
NOAA-20 CrIS 981 radiances : OutOfRange
19 times in the last 10 days for at least one item
Slightly: count(*)=6418, 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
iasi
METOP-B IASI 72 radiances : OutOfRange
7 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.29 -0.08
amdar
IUTLESBA 146 Wind Vector difference (m/s) 0 40000 : 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
AFZA24 AMDAR Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 1.45
4JY0YGBA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
NZCIEVBA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
DEEGUWBA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.76
TOX0JGJA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.51
U43HQWRA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
5T3YS5ZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
KE4IXUBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.62
NZCIEVBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 1.96
DEEGUWBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.03 1.16
3EMYF2JA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.43
3YHZXBRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.80 0.79
Severely: rms(fg_depar)=2, expected range: 0.00 1.30
5T3YS5ZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.63
5NLUOEZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.22
EU7036 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)=100, expected range: 0.00 75.00
GLQJD0JA 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)=87, expected range: 0.00 75.00
KGPIX2JA 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)=77, expected range: 0.00 75.00
Atmospheric Motion Vector
GOES-16 VIS1 70000 110000 : OutOfRange
Slightly: count(*)=1, expected range: 2.00 188.00
In-Situ measurements
All SYNOP RH2m (%s) 04 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 25 70000 101325 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 48 0 40000 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 71 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 08 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 71 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 71 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 71 70000 101325 Missing
All TEMP Land Report Wind Vector difference (m/s) WMO BLOCK 17 0 40000 Missing
BUOYS
5501504 189 Surface pressure (Pa) : OutOfRange
15 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=59, expected range: 0.00 50.00
6301560 189 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
ship
62132 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
10 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
AMOUK60 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
WDC6698 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 75.00
WDE8761 SHIP Report Surface pressure (Pa) : OutOfRange
15 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
46036 Automatic 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
44212 SYNOP Surface pressure (Pa) : OutOfRange
27 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=72, expected range: 0.00 50.00
12510 170 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 75.00