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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

amsua
METOP-A/AMSUA RADIANCES (10 channels affected) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=2433.0000, expected range: 5754.0399 15639.0157
mhs
ALLSKY NOAA-19/MHS RADIANCES CHANNEL 1 : out of range
Considerable: obs_number=9873.0000, expected range: 10323.7641 11835.0359
ssmis
DMSP-18/SSMIS RADIANCES (17 channels affected) : out of range
Severe: obs_number=8818.0000, expected range: 12547.5366 15724.3553
DMSP-17/SSMIS RADIANCES (17 channels affected) : out of range
Considerable: obs_number=9694.0000, expected range: 11906.1436 14991.4780
Radiosondes
LAND TEMP TEMPERATURE (K) 20292 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=13.1514, expected range: 0.0000 4.0247
Severe: avg_pge=0.9375, expected range: -0.6888 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 27995 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=22.1723, expected range: 0.2655 7.6510
Severe: avg_pge=0.8671, expected range: -0.1109 0.2963
LAND TEMP WIND VECTOR DIFF (M/S) 20292 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=19.8823, expected range: 0.0000 15.3257
LAND TEMP WIND VECTOR DIFF (M/S) 20292 (2 pressure layers affected) : out of range
Severe: avg_pge=0.8635, expected range: -0.6834 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=279.0000, expected range: 359.9566 381.3767
HIGH RESO LAND TEMP TEMPERATURE (K) 47778 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=6.0930, expected range: 0.0000 1.7370
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=279.0000, expected range: 351.2279 387.5498
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 87576 (2 pressure layers af : out of range
Severe: rms_fgdepar=20.4145, expected range: 0.0000 9.1418
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 47778 PRESSURE LAYER 900-12 : out of range
Severe: rms_fgdepar=16.4574, expected range: 0.0000 8.8503
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=277.0000, expected range: 327.5976 408.4024
amdar
AMDAR TEMPERATURE (K) (2 pressure layers affected) : out of range
Severe: avg_biascorr=0.0994, expected range: 0.3647 0.6978
AMDAR WIND VECTOR DIFF (M/S) AG1002 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=16.0606, expected range: 0.0000 8.5959
AMDAR WIND VECTOR DIFF (M/S) AU0142 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=17.5824, expected range: 0.0000 6.8652
AMDAR WIND VECTOR DIFF (M/S) AG1004 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=15.7040, expected range: 0.0000 8.2794
WIGOS AMDAR WIND VECTOR DIFF (M/S) SL0140 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=15.4667, expected range: 0.0000 7.5140
WIGOS AMDAR WIND VECTOR DIFF (M/S) YWGKJFJA PRESSURE LAYER 600-900 (HP : out of range
Severe: rms_fgdepar=17.9422, expected range: 0.0000 8.9705
WIGOS AMDAR WIND VECTOR DIFF (M/S) AG1002 PRESSURE LAYER 900-1200 (HPA : out of range
Severe: rms_fgdepar=19.0423, expected range: 0.0000 8.0447
WIGOS AMDAR WIND VECTOR DIFF (M/S) AG1004 PRESSURE LAYER 900-1200 (HPA : out of range
Severe: rms_fgdepar=15.9034, expected range: 0.0000 8.0190
WIGOS AMDAR WIND VECTOR DIFF (M/S) SL0044 PRESSURE LAYER 900-1200 (HPA : out of range
Severe: rms_fgdepar=18.0631, expected range: 0.0000 8.7497
WIGOS AMDAR WIND VECTOR DIFF (M/S) SL0084 PRESSURE LAYER 900-1200 (HPA : out of range
Severe: rms_fgdepar=16.0349, expected range: 0.0000 8.5677
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10356 PRESSURE LAYER 600-900 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=17.8924, expected range: 0.0000 11.6479
Severe: avg_pge=0.8963, expected range: -0.4068 0.7500
synop
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8162, expected range: -1.3474 0.7500
MANUAL LAND SYNOP RH2M (%) 42174 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9873, expected range: -1.6098 0.7500
BUFR LAND SYNOP RH2M (%) 81788 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9994, expected range: -0.1035 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 62120 : out of range
Severe: rms_fgdepar=992.8674, expected range: 0.0000 327.7593
Severe: avg_pge=0.9379, expected range: -0.6369 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42131 : out of range
Severe: rms_fgdepar=558.9326, expected range: 0.0000 246.5304
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42271 : out of range
Severe: avg_pge=0.8012, expected range: -1.1928 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 47632 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=316.9242, expected range: 0.0000 70.3728
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76342 : out of range
Severe: avg_pge=0.8073, expected range: -0.7221 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 87582 : out of range
Severe: rms_fgdepar=344.8146, expected range: 0.0000 145.3214
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40664 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=879.5454, expected range: 0.0000 111.9921
Severe: avg_pge=0.9331, expected range: -0.1241 0.1496
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86545 : out of range
Severe: rms_fgdepar=313.6969, expected range: 0.0000 138.2435
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40676 : out of range
Severe: rms_fgdepar=590.0836, expected range: 0.0000 171.8549
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86586 : out of range
Severe: rms_fgdepar=501.7791, expected range: 0.0000 221.5976
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83589 : out of range
Severe: avg_pge=0.8112, expected range: -0.0671 0.7500
MANUAL LAND SYNOP RH2M (%) 40632 : out of range
Severe: rms_fgdepar=17.3019, expected range: 0.0000 6.9025
BUFR LAND SYNOP SURFACE PRESSURE (PA) 72570 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8118, expected range: -1.1336 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48033 : out of range
Severe: avg_pge=0.8016, expected range: -0.6693 0.7500
ship
SHIP WIND VECTOR DIFF (M/S) VRGE7 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9042, expected range: 0.0404 0.7500
SHIP WIND VECTOR DIFF (M/S) ONFZ : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8643, expected range: -0.4265 0.7500
SHIP SURFACE PRESSURE (PA) 9V9450 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8362, expected range: -0.9721 0.7500
SHIP SURFACE PRESSURE (PA) VRGE7 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8791, expected range: -0.9184 0.7500
SHIP SURFACE PRESSURE (PA) C6KD8 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8328, expected range: -1.2845 0.7500
SHIP SURFACE PRESSURE (PA) 9VDD2 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8172, expected range: -0.6726 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3047 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8156, expected range: -1.0396 0.7500
SHIP SURFACE PRESSURE (PA) 2HFZ7 : out of range
Severe: avg_pge=0.8463, expected range: -0.5837 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 1402552 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8098, expected range: -1.0636 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=9.6949, expected range: -2.5938 2.9960
metar
METAR SURFACE PRESSURE (PA) MMPN : out of range
Severe: rms_fgdepar=308.1424, expected range: 0.0000 127.0832
METAR SURFACE PRESSURE (PA) SULS : out of range
Severe: rms_fgdepar=429.6181, expected range: 0.0000 243.5997
METAR SURFACE PRESSURE (PA) LIRU : out of range
Severe: rms_fgdepar=332.6166, expected range: 0.0000 134.7047
snow
BUFR LAND SYNOP SNOW (CM) : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.3000, expected range: -0.0115 0.0090
Severely_persistent: rms_fgdepar=0.7746, expected range: -0.0180 0.0231
t2m
MANUAL LAND SYNOP 2M TEMPERATURE (K) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: obs_number=131.0000, expected range: 95.4006 104.1423
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8376, expected range: -0.3757 1.2935
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 68833 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=15.3486, expected range: 0.2871 4.0315
Severe: avg_est_pge=0.8260, expected range: -0.0875 0.3187
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71074 : out of range
Severe: rms_fgdepar=8.4962, expected range: 0.0000 4.2861
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 94395 : out of range
Severe: rms_fgdepar=7.1791, expected range: 0.3995 4.2480
MANUAL LAND SYNOP 2M TEMPERATURE (K) 21813 : out of range
Severe: rms_fgdepar=7.3581, expected range: 0.0000 3.8180
MANUAL LAND SYNOP 2M TEMPERATURE (K) 72564 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.6226, expected range: 0.0000 3.8619
METAR 2M TEMPERATURE (K) UGMS : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8191, expected range: 0.2919 1.0534
METAR 2M TEMPERATURE (K) KCYS : out of range
Severe: rms_fgdepar=11.0220, expected range: 1.0433 5.6240
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=129.0000, expected range: 85.3556 110.1302
METAR RH2M (%) ORSU : out of range
Severe: rms_fgdepar=22.7474, expected range: 0.0000 12.6066
BUFR LAND SYNOP RH2M (%) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=611.0000, expected range: 388.5600 491.8611