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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2017-04-25 00:00

gpsro
All COSMIC-1 setting RO bending angles Missing
All COSMIC-1 rising RO bending angles Missing
All COSMIC-5 setting RO bending angles Missing
All COSMIC-5 rising RO bending angles Missing
All COSMIC-6 setting RO bending angles Missing
ssmis
DMSP-17 SSMIS 9 allsky radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=-1, expected range: -1.69 -1.37
DMSP-18 SSMIS 5 allsky radiances : OutOfRange
15 times in the last 10 days for at least one item
Slightly: avg(biascorr)=2, expected range: 2.22 3.00
airep
NOS130 AIREP Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=56, expected range: 0.00 50.00
amdar
3VGVD5ZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -1.11 1.00
In-Situ measurements
Moored Buoy Surface pressure (Pa) WMO BLOCK 62 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=44, expected range: 47.00 49.00
All Moored Buoy Surface pressure (Pa) WMO BLOCK 53 0 0 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 67 0 40000 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 93 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 38 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 63 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 63 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 63 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 Missing
TEMP Land Report Temperature (k) WMO BLOCK 68 0 40000 : OutOfRange
Considerably: rms(fg_depar)=2, expected range: 0.59 2.10
TEMP Land Report Temperature (k) WMO BLOCK 98 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(fg_depar)=1, expected range: -0.71 1.68
Slightly: rms(fg_depar)=5, expected range: 0.00 4.40
BUOYS
1600560 189 Surface pressure (Pa) : OutOfRange
Severely: avg(fg_depar)=-262, expected range: -50.00 85.00
Severely: rms(fg_depar)=263, expected range: 0.00 69.00
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
1600643 189 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely: avg(fg_depar)=346, expected range: -120.00 88.00
Severely: rms(fg_depar)=347, expected range: 0.00 193.00
metar
VOND METAR Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=65, expected range: 0.00 50.00
LPPD METAR Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=153, expected range: 0.00 85.00
ENHE METAR 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 70.00
ship
3FIW4 SHIP Report Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
9V2735 SHIP Report Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=73, expected range: 0.00 50.00
VWTI Automatic SHIP Report Surface pressure (Pa) : OutOfRange
14 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=85, expected range: 0.00 50.00
41001 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=146, expected range: 0.00 93.00
62141 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=91, expected range: 0.00 70.00
VCWL Automatic SHIP Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
synop
47022 SYNOP Surface pressure (Pa) : OutOfRange
16 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=80, expected range: 0.00 50.00
71533 170 Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=83, expected range: 0.00 50.00
63334 SYNOP Surface pressure (Pa) : OutOfRange
20 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
71855 170 Surface pressure (Pa) : OutOfRange
9 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=67, expected range: 0.00 50.00
21721 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 70.00
04162 170 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Radiosondes
ASFR1 111 Q (g/kg) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
68842 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=5, expected range: 0.00 2.70
98618 TEMP Land Report Temperature (k) 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

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