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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-11-09 12:00

cris
NOAA-20 CrIS 31 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.08 0.00
NOAA-20 CrIS 69 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.21 0.25
NPP CrIS 147 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(fg_depar)=0, expected range: -0.01 0.02
gpsro
All COSMIC-6 setting RO bending angles Missing
iasi
METOP-B IASI 2344 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: 0.03 0.12
METOP-B IASI 2345 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: 0.04 0.13
mhs
All NOAA-18 MHS allsky radiances Missing
airep
KLM17K AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=9, expected range: 0.00 6.40
amdar
AU0076 AMDAR Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=11, expected range: 0.71 6.20
Severely: rms(fg_depar)=15, expected range: 0.89 7.20
AU0076 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=11, expected range: 0.66 6.20
Severely: rms(fg_depar)=15, expected range: 0.74 7.20
BANIZFJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.44
JDAKCDZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.07 1.22
EU6363 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.10 1.16
EU0295 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=10, expected range: -1.62 1.73
Severely: rms(fg_depar)=10, expected range: 0.00 2.50
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
EU0903 146 Temperature (k) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=77, expected range: 0.00 75.00
EU0295 146 Temperature (k) 40000 70000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
In-Situ measurements
All SYNOP Z (m) 08 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 25 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 32 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 36 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 44 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 51 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 70 70000 101325 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 91 0 40000 Missing
All TEMP SHIP Report Temperature (k) Europe 0 40000 Missing
All TEMP SHIP Report Temperature (k) Europe 40000 70000 Missing
All TEMP SHIP Report Temperature (k) Europe 70000 101325 Missing
Drifter Buoy Surface pressure (Pa) WMO BLOCK 31 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Considerably: count(*)=239, expected range: 117.00 210.00
TEMP Land Report Temperature (k) WMO BLOCK 87 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: count(*)=1215, expected range: -390.00 740.00
TEMP Land Report Temperature (k) WMO BLOCK 87 40000 70000 : OutOfRange
4 times in the last 10 days for at least one item
Considerably: count(*)=641, expected range: -300.00 430.00
TEMP Land Report Temperature (k) WMO BLOCK 87 70000 101325 : OutOfRange
4 times in the last 10 days for at least one item
Considerably: count(*)=570, expected range: -260.00 390.00
TEMP Land Report Wind Vector difference (m/s) WMO BLOCK 87 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: count(*)=1236, expected range: -380.00 800.00
TEMP Land Report Q (g/kg) WMO BLOCK 87 0 40000 : OutOfRange
4 times in the last 10 days for at least one item
Considerably: count(*)=254, expected range: -101.00 161.00
TEMP Land Report Q (g/kg) WMO BLOCK 87 40000 70000 : OutOfRange
4 times in the last 10 days for at least one item
Considerably: count(*)=638, expected range: -300.00 430.00
TEMP Land Report Q (g/kg) WMO BLOCK 87 70000 101325 : OutOfRange
4 times in the last 10 days for at least one item
Considerably: count(*)=564, expected range: -250.00 380.00
Moored Buoy Surface pressure (Pa) WMO BLOCK 53 0 0 : OutOfRange
Slightly: count(*)=33, expected range: 37.00 56.00
BUOYS
4601612 189 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=55, expected range: 0.00 50.00
0022959 189 Surface pressure (Pa) : 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
21708 Drifter Buoy Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
2101732 189 Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
metar
DIMN METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=271, expected range: 0.00 176.00
VGHS METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=199, expected range: 0.00 113.00
KSEZ METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=163, expected range: 0.00 90.00
EGRW METAR Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=79, expected range: 0.00 75.00
pilot
87715 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=9, expected range: 2.20 7.20
ship
DSQL7 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)=100, expected range: 0.00 50.00
LF3I 182 Wind Vector difference (m/s) : OutOfRange
Severely: avg(fg_depar)=18, expected range: -1.01 6.10
Severely: rms(fg_depar)=18, expected range: 0.00 6.30
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
BATFR47 SHIP Report Wind Vector difference (m/s) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=87, expected range: 0.00 75.00
synop
71914 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
Radiosondes
27199 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: 0.04 5.30
Severely: rms(fg_depar)=11, expected range: 0.00 6.60
47102 109 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=5, expected range: 0.00 3.30
47401 109 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
94610 109 Q (g/kg) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
47102 109 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=6, expected range: 0.00 1.81
Severely: avg(fg_depar)=5, expected range: -1.05 1.57
42971 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=5, expected range: 0.17 3.20