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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-08 12:00

mhs
ALLSKY METOP-A/MHS RADIANCES CHANNEL 3 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=31380.0000, expected range: 41534.3586 54490.1879
ALLSKY METOP-A/MHS RADIANCES CHANNEL 5 : out of range
Slight: obs_number=19101.0000, expected range: 20725.2698 35662.1466
Atmospheric Motion Vector
GOES-15/AMV IR1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA) : out of range
Considerable: stdev_press=91.4230, expected range: 54.1463 83.9352
GOES-16/AMV CLOUDY WV3 WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HP : out of range
Slight: avg_press=240.7199, expected range: 223.5682 237.5422
resat
NOAA-19/SBUV OZONE, TOP PRESSURE LAYER 0-1 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=1881.0000, expected range: 2011.1031 2181.2480
Radiosondes
LAND TEMP TEMPERATURE (K) 24688 PRESSURE LAYER 900-1200 (HPA) : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8373, expected range: -1.7281 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 20292 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=30.8085, expected range: 0.0000 8.3104
Severe: avg_pge=0.9019, expected range: -0.8808 0.7500
All LAND TEMP WIND VECTOR DIFF (M/S) ALL LAYERS WMO BLOCK 84 : all data missing
Severe: obs_number=0, expected range: 0.00 145.06
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 600-900 (HPA) : out of range
Considerable: rms_fgdepar=1.8442, expected range: 0.3673 1.3465
amdar
WIGOS AMDAR TEMPERATURE (K) EEXKJFJA (2 pressure layers affected) : out of range
Severe: avg_pge=0.8697, expected range: -1.4041 0.7500
WIGOS AMDAR TEMPERATURE (K) MZXYCOZA PRESSURE LAYER 0-300 (HPA) : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8996, expected range: -1.8727 0.7500
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 96195 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=15.9750, expected range: 0.0000 14.2112
Severe: avg_pge=0.8628, expected range: -0.9583 0.7500
BUFR LAND PILOT WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : missing
Severe: obs_number=0.0000, expected range: 73.3914 132.6086
synop
BUFR LAND SYNOP RH2M (%) 01463 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9990, expected range: -1.4301 0.7500
BUFR LAND SYNOP RH2M (%) 81788 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=1.0000, expected range: -1.0012 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 78896 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9094, expected range: -0.9415 0.7500
MANUAL LAND SYNOP RH2M (%) 41560 : out of range
Severe: avg_pge=0.8333, expected range: -0.6761 0.7500
MANUAL LAND SYNOP RH2M (%) 62053 : out of range
Severe: avg_pge=0.8287, expected range: -0.0214 0.0324
MANUAL LAND SYNOP RH2M (%) 40674 : out of range
Severe: rms_fgdepar=18.0879, expected range: 0.0000 6.8092
MANUAL LAND SYNOP RH2M (%) 35108 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8599, expected range: -1.5677 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 62011 : out of range
Severe: rms_fgdepar=649.1892, expected range: 0.0000 278.7644
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42143 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8416, expected range: -1.1628 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 65453 : out of range
Severe: rms_fgdepar=378.1921, expected range: 0.0000 144.4169
BUFR LAND SYNOP RH2M (%) 72323 : out of range
Severe: rms_fgdepar=22.1347, expected range: 0.0000 11.6652
BUFR LAND SYNOP RH2M (%) 94567 : out of range
Severe: rms_fgdepar=43.8824, expected range: 0.0000 14.2851
BUFR LAND SYNOP RH2M (%) 94598 : out of range
Severe: rms_fgdepar=28.6920, expected range: 0.0000 13.7025
BUFR LAND SYNOP SURFACE PRESSURE (PA) 72570 : out of range
Severe: avg_pge=0.8001, expected range: -1.3761 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 25428 : out of range
Severe: rms_fgdepar=467.1707, expected range: 0.0000 232.7281
ship
SHIP WIND VECTOR DIFF (M/S) MLTH5 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8128, expected range: -0.4510 0.7500
SHIP SURFACE PRESSURE (PA) OXSQ2 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8723, expected range: -1.2239 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8590, expected range: 0.1301 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3047 : out of range
Severe: avg_pge=0.8315, expected range: -1.1427 0.7500
SHIP SURFACE PRESSURE (PA) C6FV8 : out of range
Severe: avg_pge=0.8631, expected range: -1.2036 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401573 : out of range
Severe: rms_fgdepar=310.9808, expected range: 0.0000 138.8644
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801667 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=375.0810, expected range: 0.0000 111.4509
metar
METAR SURFACE PRESSURE (PA) UTFN : out of range
Severe: rms_fgdepar=302.8380, expected range: 0.0000 167.6171
METAR SURFACE PRESSURE (PA) OEGT : out of range
Severe: rms_fgdepar=334.6972, expected range: 0.0000 188.6387
snow
BUFR LAND SYNOP SNOW (CM) : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0195, expected range: -0.0029 0.0023
Severely_persistent: rms_fgdepar=0.1090, expected range: -0.0331 0.0421
BUFR LAND SYNOP SNOW (CM) 71492 : out of range
Severe: rms_fgdepar=28.0517, expected range: 0.0000 5.7294
t2m
MANUAL LAND SYNOP 2M TEMPERATURE (K) 23921 : out of range
Severe: rms_fgdepar=7.1720, expected range: 0.0000 3.3233
MANUAL LAND SYNOP 2M TEMPERATURE (K) 83525 : out of range
Severe: rms_fgdepar=7.0558, expected range: 0.0000 3.8993
METAR 2M TEMPERATURE (K) KNBC : out of range
Severe: rms_fgdepar=9.3337, expected range: 0.2372 4.2432
METAR 2M TEMPERATURE (K) VABP : out of range
Severe: rms_fgdepar=7.0646, expected range: 0.6792 2.7214
LAND TEMP 2M TEMPERATURE (K) 72393 : out of range
Severe: avg_est_pge=0.8021, expected range: -0.4983 0.8626
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8468, expected range: -0.3636 1.2524
LAND TEMP 2M TEMPERATURE (K) 56137 : out of range
Severe: avg_est_pge=0.8487, expected range: 0.0649 1.1319
BUFR LAND SYNOP 2M TEMPERATURE (K) 27415 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8030, expected range: 0.4802 0.9785
BUFR LAND SYNOP 2M TEMPERATURE (K) 36026 : out of range
Severe: rms_fgdepar=14.7597, expected range: 0.0000 7.7355