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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2020-01-12 00:00

amsua
METOP-C AMSUA RADIANCES CHANNEL 5 : out of range
Considerable: avg_biascorr=-0.0904, expected range: -0.0792 -0.0407
airs
AQUA AIRS RADIANCES CHANNEL 198 : out of range
Slight: stdev_fgdepar=0.3372, expected range: 0.3239 0.3355
Atmospheric Motion Vector
METOP-B AMV IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Considerable: obs_number=324.0000, expected range: 21.1125 251.8875
GOES-17 AMV IR1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA) : out of range
Slight: avg_press=823.3632, expected range: 797.4648 815.0006
Radiosondes
LAND TEMP TEMPERATURE (K) 30758 PRESSURE LAYER 900-1200 (HPA) : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8959, expected range: 0.2857 0.7500
All HIGH RESO SEA TEMP ALL LAYERS Tropics : all data missing
Severely_persistent: obs_number=0, expected range: 45.25 161.08
LAND TEMP TEMPERATURE (K) 36096 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.8210, expected range: -0.2953 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 40856 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=20.3644, expected range: 0.0000 11.5424
Severe: avg_pge=0.8373, expected range: -0.9475 0.7500
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=124.0000, expected range: 181.9856 202.5144
Severe: obs_number=59.0000, expected range: 118.2418 136.7582
Severe: obs_number=328.0000, expected range: 382.7620 401.9880
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 67 : all data missing
Severe: obs_number=0, expected range: 27.57 182.21
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 95 : all data missing
Severe: obs_number=0, expected range: 84.03 161.97
All HIGH RESO SEA TEMP ALL LAYERS Alantic Tropical are : all data missing
Severe: obs_number=0, expected range: 45.25 161.08
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=138.0000, expected range: 146.6241 167.6259
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 600-900 (HPA) : out of range
Considerable: obs_number=269.0000, expected range: 306.2037 388.0463
amdar
WIGOS AMDAR TEMPERATURE (K) 5XLIB3BA (2 pressure layers affected) : out of range
Severe: rms_fgdepar=9.2058, expected range: 0.0000 1.9775
WIGOS AMDAR TEMPERATURE (K) MMMUNXRA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=7.6302, expected range: 0.0000 3.7635
WIGOS AMDAR TEMPERATURE (K) 4SIEIRBA PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=7.2603, expected range: 0.0000 1.7687
Severe: avg_pge=0.8286, expected range: -0.2029 0.2277
WIGOS AMDAR TEMPERATURE (K) WVSEITBA PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=6.1508, expected range: 0.0000 1.9524
WIGOS AMDAR TEMPERATURE (K) 5AFEISZA PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=9.2406, expected range: 0.0000 1.9766
WIGOS AMDAR WIND VECTOR DIFF (M/S) FMPWM4BA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.0775, expected range: 0.3609 7.0064
WIGOS AMDAR WIND VECTOR DIFF (M/S) BQRBBZBA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.4695, expected range: 0.0000 6.6560
WIGOS AMDAR WIND VECTOR DIFF (M/S) JX11CHJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8192, expected range: -0.8726 0.7500
WIGOS AMDAR WIND VECTOR DIFF (M/S) FRYFJGBA PRESSURE LAYER 300-600 (HP : out of range
Severe: rms_fgdepar=15.1921, expected range: 0.0000 7.5720
WIGOS AMDAR WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Slight: obs_number=49346.0000, expected range: 53941.9224 91329.9665
airep
AIREP WIND VECTOR DIFF (M/S) AAL1480 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.5631, expected range: 0.0000 9.0001
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10410 PRESSURE LAYER 600-900 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8790, expected range: -0.7178 0.7500
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: avg_pge=0.8480, expected range: -0.9669 0.7500
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 97560 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=17.7523, expected range: 0.0000 10.2907
Severe: avg_pge=0.8989, expected range: -0.6904 0.7500
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=130.0000, expected range: 249.6899 378.8815
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24585 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8892, expected range: 0.5030 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 60691 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=31.3791, expected range: 0.0000 15.4281
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 41600 : out of range
Severe: rms_fgdepar=324.2757, expected range: 0.0000 292.4422
Severe: avg_pge=0.8010, expected range: -0.5999 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43241 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8698, expected range: -1.1550 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42441 : out of range
Severe: rms_fgdepar=331.2567, expected range: 0.0000 259.7573
Severe: avg_pge=0.8131, expected range: -0.7763 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 63471 : out of range
Severe: avg_pge=0.8154, expected range: -0.9913 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 91353 : out of range
Severe: avg_pge=0.8482, expected range: -1.0143 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42744 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=323.7647, expected range: 0.0000 291.6828
Severe: avg_pge=0.8282, expected range: -1.1640 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40938 : out of range
Severe: rms_fgdepar=365.9192, expected range: 0.0000 286.4322
Severe: avg_pge=0.8050, expected range: -1.2716 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 91648 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8461, expected range: -1.4463 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 78479 : out of range
Severe: rms_fgdepar=477.8659, expected range: 0.0000 106.4194
MANUAL LAND SYNOP RH2M (%) 65125 : out of range
Severe: avg_pge=0.8104, expected range: -0.9459 0.7500
MANUAL LAND SYNOP RH2M (%) 64708 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8269, expected range: -1.3507 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 22541 : out of range
Severe: rms_fgdepar=839.3993, expected range: 0.0000 195.7100
Severe: avg_pge=0.9367, expected range: -0.9695 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 91551 : out of range
Severe: rms_fgdepar=542.7999, expected range: 0.0000 108.0963
BUFR LAND SYNOP SURFACE PRESSURE (PA) 29974 : out of range
Severe: rms_fgdepar=616.0238, expected range: 0.0000 108.7643
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30127 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=683.0883, expected range: 0.0000 146.6303
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24588 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8038, expected range: 0.2892 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 04149 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8510, expected range: 0.2170 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 04169 : out of range
Severe: avg_pge=0.8287, expected range: -0.3440 0.7500
BUFR LAND SYNOP RH2M (%) 08123 : out of range
Severe: avg_pge=0.9551, expected range: -0.3335 0.4370
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
Considerable: obs_number=191.0000, expected range: 150.5777 182.1723
ship
SHIP SURFACE PRESSURE (PA) : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=169.9092, expected range: -52.6306 49.9527
Severely_persistent: rms_fgdepar=653.9724, expected range: 0.0000 579.6759
Severely_persistent: avg_pge=0.9007, expected range: -0.8725 0.7500
Severely_persistent: avg_pge=0.9121, expected range: -0.9315 0.7500
Severely_persistent: rms_fgdepar=653.9724, expected range: 0.0000 570.0792
Severely_persistent: avg_pge=0.9007, expected range: -0.8846 0.7500
SHIP SURFACE PRESSURE (PA) A8OR8 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9007, expected range: -0.9189 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4602502 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8928, expected range: -1.1115 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401563 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=567.4943, expected range: 0.0000 181.8784
Severe: avg_pge=0.9105, expected range: -0.7257 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 5601519 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=412.3260, expected range: 0.0000 119.9225
Severe: avg_pge=0.8724, expected range: -0.1400 0.1766
metar
METAR SURFACE PRESSURE (PA) FZNA : out of range
Severe: rms_fgdepar=423.6471, expected range: 0.0000 170.5622
t2m
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8133, expected range: 0.6258 1.0578
BUFR LAND SYNOP 2M TEMPERATURE (K) 51542 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8309, expected range: 0.7795 0.9300
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71001 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8020, expected range: -0.3788 1.4079
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 29674 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=12.4390, expected range: 0.0000 5.9573
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71195 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8087, expected range: -0.3700 1.4128
MANUAL LAND SYNOP 2M TEMPERATURE (K) 29674 : out of range
Severe: rms_fgdepar=13.0976, expected range: 0.0000 7.4328
MANUAL LAND SYNOP 2M TEMPERATURE (K) 08926 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8499, expected range: -0.2608 1.2172
METAR 2M TEMPERATURE (K) PHLI : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=12.9875, expected range: 0.0000 6.6369
METAR 2M TEMPERATURE (K) EDNY : out of range
Severe: rms_fgdepar=10.3330, expected range: 0.0000 4.6729
MANUAL LAND SYNOP 2M TEMPERATURE (K) : out of range
Considerable: obs_number=132.0000, expected range: 145.6509 198.4602
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
Considerable: obs_number=76.0000, expected range: 93.4524 126.1947