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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-07-18 00:00

gpsro
All COSMIC-6 setting RO bending angles Missing
iasi
METOP-B IASI 59 radiances : OutOfRange
Considerably: avg(fg_depar)=0, expected range: -0.02 0.02
METOP-B IASI 138 radiances : OutOfRange
Considerably: avg(fg_depar)=0, expected range: -0.04 0.01
METOP-B IASI 66 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.03 0.03
METOP-B IASI 113 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.04 0.02
METOP-B IASI 119 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.04 0.02
METOP-B IASI 125 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.04 0.01
METOP-B IASI 131 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.03 0.02
METOP-B IASI 144 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.04 0.02
METOP-B IASI 151 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.03 0.02
METOP-B IASI 157 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.04 0.02
METOP-B IASI 163 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.04 0.03
METOP-B IASI 170 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.03 0.02
amdar
ZGOFGABA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=7, expected range: 0.95 4.90
5DKKGDBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: 1.46 5.80
Severely: rms(fg_depar)=12, expected range: 1.57 6.40
MP3IB0JA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=7, expected range: 0.54 4.80
Severely: rms(fg_depar)=9, expected range: 0.41 5.90
PYJKGCRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=14, expected range: 0.91 5.90
Severely: rms(fg_depar)=15, expected range: 0.63 7.10
B1IWUWRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=9, expected range: -0.05 5.60
Severely: rms(fg_depar)=11, expected range: 0.00 6.50
VMSIQ2BA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
MVIXOAJA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
YAVUOGRA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
SL0010 146 Temperature (k) 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=2, expected range: -0.92 0.83
Severely: rms(fg_depar)=2, expected range: 0.13 1.41
ZA5ENVJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-4, expected range: -1.23 0.84
Severely: rms(fg_depar)=5, expected range: 0.00 1.36
JI5YEVRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.05 1.13
SL0010 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=4, expected range: -1.20 2.20
Severely: rms(fg_depar)=4, expected range: 0.00 3.10
K5IEIEJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.95
HPVWUWBA 146 Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=90, expected range: 0.00 75.00
In-Situ measurements
All Land Automatic Report Surface pressure (Pa) WMO BLOCK 70 0 0 Missing
All Land Automatic Report Surface pressure (Pa) WMO BLOCK 88 0 0 Missing
TEMP Land Report Temperature (k) WMO BLOCK 17 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: rms(fg_depar)=1, expected range: 0.60 1.28
BUOYS
1601518 189 Surface pressure (Pa) : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=58, expected range: 0.00 50.00
4601592 189 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
1501609 189 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=81, expected range: 0.00 75.00
metar
CYIN METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=148, expected range: 0.00 96.00
VYNT METAR Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
pilot
42101 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: 1.08 6.90
Severely: rms(fg_depar)=13, expected range: 0.69 8.40
72456 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=13, expected range: 0.06 7.10
Severely: rms(fg_depar)=15, expected range: 0.15 8.10
ship
V7NG2 SHIP Report Surface pressure (Pa) : OutOfRange
7 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=53, expected range: 0.00 50.00
VOLG Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
synop
68549 Land Automatic Report Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=69, expected range: 0.00 50.00
12510 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=91, expected range: 0.00 75.00
71211 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
86185 SYNOP 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 75.00
Radiosondes
17030 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=1, expected range: -0.80 0.75
Severely: rms(fg_depar)=2, expected range: 0.31 1.48
89664 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.60
82917 TEMP Land Report 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
72403 TEMP Land Report Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.82