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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-02-05 12:00

gpsro
All COSMIC-6 rising RO bending angles Missing
TERRA-SAR-X setting RO bending angles 10-20 km : OutOfRange
Slightly: stddev_n_fg_depar=1, expected range: 0.92 1.20
amdar
STOWUURA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=15, expected range: -0.21 8.10
Severely: rms(fg_depar)=22, expected range: 0.00 8.90
H52HOCRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.61 0.68
1OKUIEBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.05 1.49
F2QUNVBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.30
0OPEILJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 1.96
SMTENXJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
QBAUOFZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.20
0TTEILZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.30
5B1UILZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.20
OLNENVZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
DIJX1DJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
WAY0ONRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
In-Situ measurements
Moored Buoy Surface pressure (Pa) WMO BLOCK 32 0 0 : OutOfRange
Severely: count(*)=6, expected range: 9.10 14.50
Moored Buoy Surface pressure (Pa) WMO BLOCK 51 0 0 : OutOfRange
Severely: count(*)=12, expected range: 18.60 29.00
All European Wind Profiler Wind Vector difference (m/s) WMO BLOCK 11 0 400 Missing
TEMP Land Report Temperature (k) WMO BLOCK 78 40000 70000 : OutOfRange
Considerably: rms(fg_depar)=1, expected range: 0.01 1.48
Drifter Buoy Surface pressure (Pa) WMO BLOCK 44 0 0 : OutOfRange
Slightly: rms(fg_depar)=106, expected range: 29.00 106.00
TEMP Land Report Temperature (k) 01 40000 70000 : OutOfRange
Slightly: rms(fg_depar)=1, expected range: 0.07 1.02
BUOYS
4401601 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=199, expected range: 0.00 120.00
6203603 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=213, expected range: 0.00 136.00
4401565 189 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=226, expected range: 0.00 150.00
3300519 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=141, expected range: 0.00 70.00
2301574 189 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
metar
PADM METAR Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=51, expected range: 0.00 50.00
SCHR METAR Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=88, expected range: 0.00 70.00
pilot
42182 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
6 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=60, expected range: 0.00 50.00
ship
C6FW2 SHIP Report Surface pressure (Pa) : OutOfRange
9 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=78, expected range: 0.00 50.00
ZDNC6 SHIP Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
VRPY7 SHIP Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=63, expected range: 0.00 50.00
VRKX8 SHIP Report Surface pressure (Pa) : OutOfRange
16 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=94, expected range: 0.00 50.00
SMLQ Automatic SHIP Report Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=54, expected range: 0.00 50.00
SBPR Automatic SHIP Report Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=94, expected range: 0.00 50.00
CFL24 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)=91, expected range: 0.00 70.00
V7ZZ5 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=72, expected range: 0.00 70.00
A8PQ7 SHIP Report 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
3FAD8 SHIP Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
synop
08150 170 Surface pressure (Pa) : OutOfRange
12 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=67, expected range: 0.00 50.00
17371 170 Surface pressure (Pa) : OutOfRange
17 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=84, expected range: 0.00 50.00
08146 170 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=51, expected range: 0.00 50.00
71180 170 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
04373 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=81, expected range: 0.00 70.00
71407 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Radiosondes
SOCR3 TEMP SHIP Report U10m (m/s) 70000 101325 : OutOfRange
13 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=88, expected range: 0.00 50.00
SOCR3 TEMP SHIP Report V10m (m/s) 70000 101325 : OutOfRange
13 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=88, expected range: 0.00 50.00
SOCRATES 111 U10m (m/s) 70000 101325 : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=90, expected range: 0.00 50.00
SOCRATES 111 V10m (m/s) 70000 101325 : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=90, expected range: 0.00 50.00
01004 109 Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=10, expected range: 0.46 5.20
Severely: rms(fg_depar)=11, expected range: 0.72 6.10
01004 109 Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=3, expected range: 0.00 1.58
78897 109 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -0.25 1.35
Severely: rms(fg_depar)=2, expected range: 0.02 1.58
29572 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00