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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-02-07 12:00

cris
NPP CrIS 233 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.39 -0.34
Geostationary CSR
METEOSAT-8 55 2 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=35249, expected range: 20000.00 34000.00
amdar
KLXEOGJA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
XZYUOGZA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
3FBEIEBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.66 0.54
3SYUIEBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.46
BQFKJFJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.62
5DPGUWJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.13
13KGUWRA 146 Q (g/kg) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
3SYUIEBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -1.79 1.14
Severely: rms(fg_depar)=4, expected range: 0.00 2.40
FGMUOHBA 146 Q (g/kg) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
FSEVGCZA 146 Temperature (k) 70000 101325 : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Atmospheric Motion Vector
METEOSAT-8 cloudy WV1 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=8076, expected range: 3000.00 7300.00
METEOSAT-8 cloudy WV2 0 40000 : OutOfRange
Slightly: count(*)=6326, expected range: 2500.00 6100.00
METEOSAT-8 IR3 0 40000 : OutOfRange
Slightly: count(*)=4338, expected range: 1800.00 4300.00
GOES-15 IR1 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=466, expected range: 1010.00 4700.00
Slightly: stdev(fg_depar)=4, expected range: 2.60 4.57
Slightly: avg(press)=309, expected range: 240.00 308.04
In-Situ measurements
All European Wind Profiler Wind Vector difference (m/s) WMO BLOCK 95 0 400 Missing
SYNOP Surface pressure (Pa) WMO BLOCK 44 0 0 : OutOfRange
Slightly: avg(fg_depar)=-88, expected range: -57.00 73.00
Slightly: rms(fg_depar)=136, expected range: 28.00 132.00
TEMP Land Report Temperature (k) WMO BLOCK 13 0 40000 : OutOfRange
3 times in the last 10 days for at least one item
Slightly: count(*)=326, expected range: 67.00 320.00
TEMP Land Report Temperature (k) WMO BLOCK 13 40000 70000 : OutOfRange
3 times in the last 10 days for at least one item
Slightly: count(*)=172, expected range: 32.00 161.00
TEMP Land Report Temperature (k) WMO BLOCK 13 70000 101325 : OutOfRange
3 times in the last 10 days for at least one item
Slightly: count(*)=162, expected range: 32.00 158.00
TEMP Land Report Temperature (k) WMO BLOCK 72 40000 70000 : OutOfRange
Slightly: count(*)=5033, expected range: 4000.00 5000.00
TEMP Land Report Wind Vector difference (m/s) WMO BLOCK 80 0 40000 : OutOfRange
Slightly: count(*)=88, expected range: 25.00 77.00
BUOYS
4802009 189 Surface pressure (Pa) : 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
4400510 189 Surface pressure (Pa) : OutOfRange
Severely: avg(fg_depar)=308, expected range: -67.00 166.00
Severely: rms(fg_depar)=345, expected range: 0.00 154.00
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
4601506 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=186, expected range: 0.00 105.00
2301546 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=277, expected range: 0.00 142.00
2101527 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=237, expected range: 0.00 141.00
metar
KJXI METAR Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=189, expected range: 0.00 100.00
DAON METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=208, expected range: 0.00 137.00
KLZU METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=339, expected range: 0.00 125.00
SCHR METAR Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=87, expected range: 0.00 70.00
ship
VRPY7 SHIP Report Surface pressure (Pa) : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=70, expected range: 0.00 50.00
VTXF SHIP Report Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=90, expected range: 0.00 50.00
BATFR47 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
C6WK7 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
3FAD8 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 70.00
synop
29833 170 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=51, expected range: 0.00 50.00
04158 170 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=98, expected range: 0.00 50.00
16550 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
71021 170 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 70.00
04373 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
89815 Land Automatic Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=88, expected range: 0.00 70.00
38836 SYNOP Surface pressure (Pa) : OutOfRange
8 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
37749 SYNOP 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
SOCR3 TEMP SHIP Report U10m (m/s) 70000 101325 : OutOfRange
15 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=92, expected range: 0.00 50.00
SOCR3 TEMP SHIP Report V10m (m/s) 70000 101325 : OutOfRange
15 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=92, expected range: 0.00 50.00
SOCRATES 111 U10m (m/s) 70000 101325 : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=92, expected range: 0.00 50.00
71909 109 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=7, expected range: 1.03 5.20
71909 109 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.95