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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-02-10 00:00

gpsro
All COSMIC-6 setting RO bending angles Missing
iasi
393 METOP-B IASI 16 radiances have reduced counts (see example): OutOfRange
Severely: count(*)=10736, expected range: 15300.00 17100.00
METOP-A IASI 404 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.25 0.30
METOP-A IASI 756 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.29 0.34
Ozone
AURA OMI layer ozone, top pressure 1 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=3026, expected range: 17100.00 25000.00
Severely: avg_fg_depar_du=-2, expected range: -0.98 1.46
Slightly: avg_biascorr_du=-6, expected range: -6.60 -4.60
NOAA-19 SBUV layer ozone, top pressure 60 : OutOfRange
Slightly: stdev_fg_depar_du=0, expected range: 0.04 0.06
airep
AAL228 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
amdar
YVPXOARA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
POP0JHBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.42
ACC0JFJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.06
CWM0JFRA 146 Temperature (k) 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=2, expected range: 0.00 1.45
I3C0JGRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.31
EU0488 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
ZWGUX0BA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=5, expected range: 0.00 2.40
2SIEOGBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.20
5GJUOGBA 146 Temperature (k) 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=3, expected range: 0.00 2.20
G3SEESBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.20
H4O2ISBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.50
1OWKB4JA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.00
UMBEOFJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
KTXUOGJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.60
PVMWILJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.50
KISHOARA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.36 1.27
3LXKXDRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.40
VAIUOFRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -1.46 1.42
Severely: rms(fg_depar)=5, expected range: 0.00 2.50
ISNYWHRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.30
50PIFRRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.10
HMP0EVRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
UBO0Z2ZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.40
35NUOEZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.20
GWBUOFZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.70
GDWHINZA 146 Temperature (k) 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=4, expected range: 0.00 2.20
1WUKEVZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
SQXIOYZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.20
LLEZRNRA 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
C2WKHYRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
4ICIELZA 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)=75, expected range: 0.00 70.00
In-Situ measurements
Land Automatic Report Surface pressure (Pa) WMO BLOCK 45 0 0 : OutOfRange
Severely: count(*)=49, expected range: 52.00 53.00
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 PILOT Wind Vector difference (m/s) WMO BLOCK 70 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 Missing
TEMP Land Report Temperature (k) WMO BLOCK 68 40000 70000 : OutOfRange
Considerably: rms(fg_depar)=1, expected range: 0.10 1.39
Drifter Buoy Surface pressure (Pa) WMO BLOCK 17 0 0 : OutOfRange
Slightly: rms(fg_depar)=75, expected range: 34.00 74.00
AMDAR Temperature (k) North Pacific 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: rms(fg_depar)=1, expected range: 0.51 1.32
TEMP SHIP Report Wind Vector difference (m/s) North Atlantic 40000 700 : OutOfRange
Slightly: avg(fg_depar)=5, expected range: 0.38 4.90
Slightly: rms(fg_depar)=6, expected range: 0.37 5.70
BUOYS
4802009 189 Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=57, expected range: 0.00 50.00
1700658 189 Surface pressure (Pa) : OutOfRange
Severely: avg(fg_depar)=168, expected range: -155.00 29.00
Severely: rms(fg_depar)=275, expected range: 0.00 144.00
4401633 189 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
2100544 189 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
metar
VEDG METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=211, expected range: 0.00 121.00
OIBP METAR Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=300, expected range: 0.00 115.00
KBWW METAR Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=-310, expected range: -132.00 130.00
Severely: rms(fg_depar)=315, expected range: 0.00 107.00
K2WX METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=271, expected range: 0.00 138.00
ship
D5DS3 SHIP Report Wind Vector difference (m/s) : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=87, expected range: 0.00 50.00
ZDNC6 SHIP Report Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=81, expected range: 0.00 50.00
LAQJ7 SHIP Report Surface pressure (Pa) : OutOfRange
Severely_persistent: freq(qc_pge)=76, expected range: 0.00 50.00
VRPY7 SHIP Report Surface pressure (Pa) : OutOfRange
12 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=80, expected range: 0.00 50.00
46054 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
Severely: rms(fg_depar)=6, expected range: 0.04 4.00
9V9040 SHIP Report Wind Vector difference (m/s) : OutOfRange
8 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
C6BR3 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
synop
04158 170 Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=97, expected range: 0.00 50.00
91825 170 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=232, expected range: 0.00 96.00
22282 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
62423 SYNOP Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
72414 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
68674 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
14 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=81, expected range: 0.00 50.00
SOCR3 TEMP SHIP Report V10m (m/s) 70000 101325 : OutOfRange
14 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=81, expected range: 0.00 50.00
68842 109 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
17281 109 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=5, expected range: 0.00 3.40
17281 109 Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
68816 109 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -0.69 1.05
Severely: rms(fg_depar)=3, expected range: 0.00 1.21
42182 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=78, expected range: 0.00 70.00
28698 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
17281 109 Temperature (k) 70000 101325 : OutOfRange
Considerably: freq(qc_pge)=70, expected range: 0.00 70.00