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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-02-13 12:00

airs
AQUA AIRS 78 radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -1.10 -0.80
AQUA AIRS 248 radiances : OutOfRange
5 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.26 -0.04
Geostationary CSR
All Himawari-8 AHI radiances Missing
METEOSAT-8 55 2 radiances : OutOfRange
6 times in the last 10 days for at least one item
Slightly: count(*)=37585, expected range: 15854.00 37529.00
gpsro
All COSMIC-1 setting RO bending angles Missing
All COSMIC-1 rising RO bending angles Missing
All COSMIC-6 setting RO bending angles Missing
iasi
METOP-A IASI 101 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.18 0.05
METOP-A IASI 299 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.47 -0.22
airep
UAL863 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
amdar
AFZA24 AMDAR Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.48
0P0RWCZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.33
AU0142 AMDAR Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=5, expected range: 0.00 1.28
SL0135 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.34
SL0139 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.57
AU0165 AMDAR Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.30
SDP2UEBA 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
QTPEMLBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Atmospheric Motion Vector
All Himawari-8 IR1 0 40000 Missing
In-Situ measurements
Land Automatic Report Surface pressure (Pa) WMO BLOCK 68 0 0 : OutOfRange
Severely: count(*)=287, expected range: 400.00 520.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 47 0 0 : OutOfRange
Severely: count(*)=65, expected range: 101.00 166.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 56 0 0 : OutOfRange
Severely: count(*)=393, expected range: 460.00 580.00
TEMP Land Report Temperature (k) WMO BLOCK 36 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=5, expected range: 0.00 3.50
Slightly: avg(fg_depar)=-1, expected range: -1.53 1.54
TEMP Land Report Temperature (k) WMO BLOCK 80 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.94 2.30
TEMP Land Report Temperature (k) WMO BLOCK 81 0 40000 : OutOfRange
Severely: avg(fg_depar)=2, expected range: -0.36 1.47
Severely: rms(fg_depar)=4, expected range: 0.08 2.50
All Japanese Wind Profiler Wind Vector difference (m/s) WMO BLOCK 47 0 400 Missing
All European Wind Profiler Wind Vector difference (m/s) WMO BLOCK 11 0 400 Missing
All Drifter Buoy Surface pressure (Pa) WMO BLOCK 42 0 0 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 93 0 40000 Missing
Drifter Buoy Surface pressure (Pa) WMO BLOCK 44 0 0 : OutOfRange
Slightly: count(*)=611, expected range: 630.00 760.00
Drifter Buoy Surface pressure (Pa) WMO BLOCK 45 0 0 : OutOfRange
Slightly: count(*)=18, expected range: 18.20 31.00
PILOT Wind Vector difference (m/s) WMO BLOCK 71 0 40000 : OutOfRange
Slightly: avg(fg_depar)=7, expected range: 1.68 7.60
TEMP Land Report Temperature (k) WMO BLOCK 70 0 40000 : OutOfRange
Slightly: rms(fg_depar)=2, expected range: 0.55 1.89
AMDAR Temperature (k) South Pacific 40000 70000 : OutOfRange
Slightly: rms(fg_depar)=1, expected range: 0.45 1.08
AMDAR Temperature (k) South America 40000 70000 : OutOfRange
Slightly: rms(fg_depar)=1, expected range: 0.53 0.99
BUOYS
4600534 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=195, expected range: 0.00 108.00
1501535 189 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=88, expected range: 0.00 70.00
metar
KGIC METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=161, expected range: 0.00 100.00
EGLF METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=197, expected range: 0.00 85.00
MUCL METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=267, expected range: 0.00 93.00
ship
D5DS3 SHIP Report Wind Vector difference (m/s) : OutOfRange
14 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=93, expected range: 0.00 50.00
LF6K 182 Wind Vector difference (m/s) : OutOfRange
Severely: rms(fg_depar)=18, expected range: 0.00 10.30
9V9040 SHIP Report Wind Vector difference (m/s) : OutOfRange
5 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=87, expected range: 0.00 70.00
VOLG Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=91, expected range: 0.00 70.00
synop
04158 170 Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=91, expected range: 0.00 50.00
89014 Land Automatic Report Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=221, expected range: 0.00 145.00
94954 170 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=124, expected range: 0.00 83.00
91958 170 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=245, expected range: 0.00 147.00
71880 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
76581 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
72314 170 Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Radiosondes
71917 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=11, expected range: 0.00 7.30
70350 109 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.90
36003 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
2 times in the last 10 days for at least one item
Severely: rms(fg_depar)=9, expected range: 0.00 3.10
81405 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=2, expected range: -0.36 1.47
Severely: rms(fg_depar)=4, expected range: 0.08 2.50
72357 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=5, expected range: 0.00 3.70
80398 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=8, expected range: 0.00 3.80