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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-02-08 00:00

Geostationary CSR
METEOSAT-8 55 2 radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=35782, expected range: 20000.00 34000.00
METEOSAT-8 55 3 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=20281, expected range: 10700.00 19700.00
amdar
13KGUWRA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
0LYUNVJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.34
EU0549 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.96
AEA042 AMDAR Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=71, expected range: 0.00 70.00
C5AKHWBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
VQHJNZJA 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 70.00
S2AJLJZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=71, expected range: 0.00 70.00
In-Situ measurements
SYNOP Surface pressure (Pa) 06 0 0 : OutOfRange
Severely: count(*)=2431, expected range: 2600.00 2800.00
Land Automatic Report Surface pressure (Pa) WMO BLOCK 60 0 0 : OutOfRange
Severely: rms(fg_depar)=153, expected range: 27.00 100.00
TEMP Land Report Temperature (k) WMO BLOCK 12 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=285, expected range: 350.00 400.00
TEMP Land Report Temperature (k) WMO BLOCK 88 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=177, expected range: 81.00 92.00
TEMP Land Report Temperature (k) WMO BLOCK 88 70000 101325 : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=164, expected range: 70.00 93.00
All European Wind Profiler Wind Vector difference (m/s) WMO BLOCK 11 0 400 Missing
All European Wind Profiler Wind Vector difference (m/s) WMO BLOCK 95 0 400 Missing
All Drifter Buoy Surface pressure (Pa) WMO BLOCK 42 0 0 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 Missing
SYNOP Surface pressure (Pa) WMO BLOCK 44 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(fg_depar)=-59, expected range: -46.00 65.00
TEMP Land Report Temperature (k) WMO BLOCK 12 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=281, expected range: 310.00 430.00
TEMP Land Report Temperature (k) WMO BLOCK 89 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: rms(fg_depar)=1, expected range: 0.53 1.43
BUOYS
4802009 189 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=57, expected range: 0.00 50.00
4601601 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=332, expected range: 0.00 220.00
2301546 189 Surface pressure (Pa) : OutOfRange
Severely: avg(fg_depar)=-189, expected range: -67.00 146.00
metar
CYXS METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=258, expected range: 0.00 129.00
CYXT METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=288, expected range: 0.00 163.00
KRSP METAR 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
pilot
43150 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=9, expected range: 0.78 6.00
Severely: rms(fg_depar)=12, expected range: 0.00 8.10
ship
D5DS3 SHIP Report Wind Vector difference (m/s) : OutOfRange
4 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=88, expected range: 0.00 50.00
WDB3161 SHIP Report Surface pressure (Pa) : OutOfRange
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
VRPY7 SHIP Report Surface pressure (Pa) : OutOfRange
9 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=73, expected range: 0.00 50.00
VTXF SHIP Report Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=95, expected range: 0.00 50.00
synop
08271 170 Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=52, expected range: 0.00 50.00
29833 170 Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=52, expected range: 0.00 50.00
04158 170 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=99, expected range: 0.00 50.00
60010 Land Automatic Report Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=402, expected range: 0.00 210.00
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
71021 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 70.00
15261 170 Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
67261 SYNOP Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
08345 170 Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=90, expected range: 0.00 70.00
47189 Land Automatic Report 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
16 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=87, expected range: 0.00 50.00
SOCR3 TEMP SHIP Report V10m (m/s) 70000 101325 : OutOfRange
16 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=87, expected range: 0.00 50.00
SOCRATES 111 U10m (m/s) 70000 101325 : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=87, expected range: 0.00 50.00
SOCRATES 111 V10m (m/s) 70000 101325 : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=87, expected range: 0.00 50.00
57993 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=14, expected range: -1.28 8.40
Severely: rms(fg_depar)=17, expected range: 0.00 9.70
17220 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.82 0.88
72240 109 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.10
48615 TEMP Land Report Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10