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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-01-16 18:00

airs
AQUA AIRS 51 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.63 0.70
cris
NPP CrIS 21 radiances : OutOfRange
14 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.06 0.18
NOAA-20 CrIS 981 radiances : OutOfRange
17 times in the last 10 days for at least one item
Slightly: count(*)=6096, 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
ssmis
All DMSP-18 SSMIS allsky radiances Missing
DMSP-17 SSMIS 9 allsky radiances : OutOfRange
1 times in the last 10 days for at least one item
Considerably: count(*)=2159, expected range: 4800.00 14700.00
DMSP-17 SSMIS 10 allsky radiances : OutOfRange
2 times in the last 10 days for at least one item
Considerably: count(*)=3486, expected range: 7900.00 23000.00
DMSP-17 SSMIS 11 allsky radiances : OutOfRange
2 times in the last 10 days for at least one item
Considerably: count(*)=3662, expected range: 8600.00 24000.00
DMSP-17 SSMIS 1 allsky radiances : OutOfRange
Slightly: count(*)=1281, expected range: 2500.00 9200.00
DMSP-17 SSMIS 2 allsky radiances : OutOfRange
Slightly: count(*)=584, expected range: 1100.00 3700.00
DMSP-17 SSMIS 3 allsky radiances : OutOfRange
Slightly: count(*)=694, expected range: 1100.00 4200.00
DMSP-17 SSMIS 5 allsky radiances : OutOfRange
Slightly: count(*)=2754, expected range: 5000.00 19500.00
DMSP-17 SSMIS 6 allsky radiances : OutOfRange
Slightly: count(*)=2790, expected range: 5300.00 20000.00
DMSP-17 SSMIS 7 allsky radiances : OutOfRange
Slightly: count(*)=2790, expected range: 5300.00 20000.00
DMSP-17 SSMIS 8 allsky radiances : OutOfRange
Slightly: count(*)=1763, expected range: 3600.00 13300.00
Slightly: avg(biascorr)=0, expected range: 0.58 1.72
DMSP-17 SSMIS 12 allsky radiances : OutOfRange
Slightly: count(*)=1787, expected range: 3600.00 13500.00
DMSP-17 SSMIS 13 allsky radiances : OutOfRange
Slightly: count(*)=1790, expected range: 3600.00 13500.00
DMSP-17 SSMIS 14 allsky radiances : OutOfRange
Slightly: count(*)=1776, expected range: 3600.00 13400.00
DMSP-17 SSMIS 15 allsky radiances : OutOfRange
Slightly: count(*)=1782, expected range: 3600.00 13400.00
DMSP-17 SSMIS 16 allsky radiances : OutOfRange
Slightly: count(*)=1792, expected range: 3600.00 13400.00
DMSP-17 SSMIS 17 allsky radiances : OutOfRange
Slightly: count(*)=1780, expected range: 3600.00 13400.00
DMSP-17 SSMIS 18 allsky radiances : OutOfRange
Slightly: count(*)=1784, expected range: 3600.00 13400.00
amdar
PPJGU1JA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.54
AERITPRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.72 0.72
Severely: rms(fg_depar)=2, expected range: 0.00 1.32
PWMXRXRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=1, expected range: -0.64 0.71
Severely: rms(fg_depar)=3, expected range: 0.00 1.30
AU0332 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.60
E2TDFEJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=84, expected range: 0.00 75.00
0QVZIOJA 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)=80, expected range: 0.00 75.00
PWMXRXRA 146 Temperature (k) 70000 101325 : OutOfRange
Considerably: freq(qc_pge)=77, expected range: 0.00 75.00
Atmospheric Motion Vector
NOAA-15 IR 70000 110000 : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=1, expected range: 2.00 15.40
In-Situ measurements
Land Automatic Report Surface pressure (Pa) WMO BLOCK 96 0 0 : OutOfRange
3 times in the last 10 days for at least one item
Severely: count(*)=6, expected range: 0.31 4.10
All Land Automatic Report RH2m (%s) 06 70000 101325 Missing
All Land Automatic Report RH2m (%s) WMO BLOCK 11 70000 101325 Missing
All Land Automatic Report RH2m (%s) WMO BLOCK 12 70000 101325 Missing
All SYNOP RH2m (%s) 01 70000 101325 Missing
All SYNOP RH2m (%s) 06 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 10 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 11 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 12 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 14 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 16 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 25 70000 101325 Missing
Drifter Buoy Surface pressure (Pa) WMO BLOCK 16 0 0 : OutOfRange
Severely: rms(fg_depar)=89, expected range: 35.00 71.00
All PILOT Wind Vector difference (m/s) WMO BLOCK 71 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 01 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 08 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 SHIP Report Temperature (k) North Atlantic 0 40000 Missing
All TEMP SHIP Report Temperature (k) North Atlantic 40000 70000 Missing
All TEMP SHIP Report Temperature (k) North Atlantic 70000 101325 Missing
All TEMP Land Report Temperature (k) 04 0 40000 Missing
All TEMP Land Report Temperature (k) 04 40000 70000 Missing
All TEMP Land Report Temperature (k) 04 70000 101325 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
BUOYS
6301670 189 Surface pressure (Pa) : OutOfRange
9 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=74, expected range: 0.00 50.00
ship
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
9V3867 SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
WDC6698 SHIP Report 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
synop
11325 170 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 75.00