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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

airs
AQUA/AIRS RADIANCES CHANNEL 1142 : out of range
Severe: avg_biascorr=0.0147, expected range: -0.1172 -0.0321
mhs
ALLSKY METOP-A/MHS RADIANCES CHANNEL 3 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=30890.0000, expected range: 41534.3586 54490.1879
ALLSKY METOP-A/MHS RADIANCES CHANNEL 2 : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=15218.0000, expected range: 17817.1307 27913.8319
resat
NOAA-19/SBUV OZONE, TOP PRESSURE LAYER 0-1 (HPA) : out of range
1 times in the last 10 days for at least one item
Slight: obs_number=1881.0000, expected range: 2011.1031 2801.7729
Radiosondes
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=661.0000, expected range: 549.8390 590.5360
LAND TEMP TEMPERATURE (K) 30715 PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8785, expected range: -1.3689 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
Considerable: obs_number=88.0000, expected range: 183.6056 366.3944
amdar
WIGOS AMDAR TEMPERATURE (K) EEXKJFJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8682, expected range: -1.3802 0.7500
WIGOS AMDAR TEMPERATURE (K) AUMZGNZA (2 pressure layers affected) : out of range
Severe: rms_fgdepar=14.0011, expected range: 0.0000 2.6903
WIGOS AMDAR TEMPERATURE (K) AUMZGNZA (4 pressure layers affected) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9238, expected range: -1.4113 0.7500
WIGOS AMDAR TEMPERATURE (K) MZXYCOZA PRESSURE LAYER 300-600 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8429, expected range: -1.7271 0.7500
airep
AIREP WIND VECTOR DIFF (M/S) UAL929 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=21.5727, expected range: 0.0000 11.5957
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83844 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8176, expected range: -1.0360 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27415 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8818, expected range: -0.5197 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 78896 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9253, expected range: -1.2152 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 35167 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9975, expected range: -0.3942 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40930 : out of range
Severe: rms_fgdepar=1135.4895, expected range: 0.0000 346.4017
Severe: avg_pge=0.9202, expected range: -0.2121 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 31960 : out of range
Severe: rms_fgdepar=379.5814, expected range: 0.0000 77.6741
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40637 : out of range
Severe: rms_fgdepar=1082.8948, expected range: 0.0000 226.8794
Severe: avg_pge=0.9484, expected range: -0.7312 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42557 : out of range
Severe: rms_fgdepar=801.9819, expected range: 0.0000 289.6964
Severe: avg_pge=0.9249, expected range: 0.1050 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 94657 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=617.7408, expected range: 0.0000 296.1197
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42387 : out of range
Severe: rms_fgdepar=716.3489, expected range: 0.0000 215.6139
Severe: avg_pge=0.9103, expected range: -0.6014 0.7117
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42399 : out of range
Severe: rms_fgdepar=660.8178, expected range: 0.0000 283.6656
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=-3.5644, expected range: -1.2588 1.3871
MANUAL LAND SYNOP RH2M (%) 52602 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=37.1258, expected range: 0.0000 17.4029
BUFR LAND SYNOP SURFACE PRESSURE (PA) 91843 : out of range
Severe: rms_fgdepar=483.3363, expected range: 0.0000 67.7234
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48474 : out of range
Severe: rms_fgdepar=378.1399, expected range: 0.0000 72.0516
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94657 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=603.7347, expected range: 0.0000 262.1999
BUFR LAND SYNOP RH2M (%) 94451 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8367, expected range: -1.9093 0.7500
BUFR LAND SYNOP RH2M (%) 94514 : out of range
Severe: rms_fgdepar=55.2878, expected range: 0.0000 14.2114
Severe: avg_pge=1.0000, expected range: -0.0277 0.0368
BUFR LAND SYNOP RH2M (%) 08159 : out of range
Severe: rms_fgdepar=45.4557, expected range: 0.0000 28.5289
Severe: avg_pge=0.9355, expected range: -0.0292 0.0421
ship
SHIP SURFACE PRESSURE (PA) : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-400.0000, expected range: -93.3924 87.4465
SHIP SURFACE PRESSURE (PA) OXSQ2 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8261, expected range: -1.2716 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=0.8998, expected range: 0.1275 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) AMOUK28 : out of range
Severe: rms_fgdepar=798.0287, expected range: 0.0000 185.1243
Severe: avg_pge=0.9373, expected range: -0.3605 0.5699
SHIP SURFACE PRESSURE (PA) VRRD2 : out of range
Severe: avg_pge=0.8366, expected range: -0.7653 0.7500
SHIP SURFACE PRESSURE (PA) OWIZ2 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8933, expected range: -1.3059 0.7500
SHIP SURFACE PRESSURE (PA) VRNI7 : out of range
Severe: rms_fgdepar=443.4839, expected range: 0.0000 377.7458
Severe: avg_pge=0.8438, expected range: -0.6949 0.7500
SHIP SURFACE PRESSURE (PA) C6XP7 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=434.1071, expected range: 0.0000 322.4421
Severe: avg_pge=0.8571, expected range: -1.1095 0.7500
SHIP SURFACE PRESSURE (PA) MAQK9 : out of range
Severe: avg_pge=0.8391, expected range: -0.9794 0.7500
SHIP SURFACE PRESSURE (PA) BPBC : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8036, expected range: -0.7544 0.7500
SHIP SURFACE PRESSURE (PA) KOGE : out of range
Severe: avg_pge=0.8148, expected range: -0.1334 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801652 : out of range
Severe: rms_fgdepar=351.2946, expected range: 0.0000 178.6378
DRIFTING BUOYS SURFACE PRESSURE (PA) 3100735 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=331.2658, expected range: 0.0000 122.8857
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701566 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8296, expected range: -0.9035 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801667 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=375.8357, expected range: 0.0000 85.4597
DRIFTING BUOYS SURFACE PRESSURE (PA) 4101708 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=325.7076, expected range: 0.0000 163.8026
metar
METAR SURFACE PRESSURE (PA) FZQA : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=419.1548, expected range: 0.0000 206.5314
METAR SURFACE PRESSURE (PA) SYEC : out of range
Severe: rms_fgdepar=497.9605, expected range: 0.0000 175.4881
METAR SURFACE PRESSURE (PA) FDMS : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=543.0298, expected range: 0.0000 189.0197
snow
AUTOMATIC LAND SYNOP SNOW (CM) : out of range
12 times in the last 10 days for at least one item
Severely_persistent: obs_number=551.0000, expected range: 253.5263 350.0031
MANUAL LAND SYNOP SNOW (CM) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0068, expected range: -0.0010 0.0009
Severely_persistent: rms_fgdepar=0.0974, expected range: -0.0095 0.0111
BUFR LAND SYNOP SNOW (CM) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0137, expected range: -0.0028 0.0022
Severely_persistent: avg_fgdepar=-0.0119, expected range: -0.0037 0.0033
Severely_persistent: rms_fgdepar=0.1161, expected range: -0.0328 0.0416
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=46.0000, expected range: 70.6571 99.1762
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 11110 : out of range
Severe: rms_fgdepar=9.4892, expected range: 0.0000 5.1319
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 06750 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.7703, expected range: 0.0000 3.8585
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 06799 : out of range
Severe: rms_fgdepar=10.8618, expected range: 0.0000 5.6625
Severe: avg_est_pge=0.8112, expected range: -0.2682 0.6396
METAR 2M TEMPERATURE (K) KPGD : out of range
Severe: rms_fgdepar=9.1522, expected range: 0.7100 4.1566
METAR 2M TEMPERATURE (K) UOOO : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.1986, expected range: 0.0000 3.3138
LAND TEMP 2M TEMPERATURE (K) 04417 : out of range
Severe: avg_est_pge=0.8162, expected range: -0.3561 1.4196
BUFR LAND SYNOP 2M TEMPERATURE (K) 06750 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.7384, expected range: 0.0000 3.8476
BUFR LAND SYNOP 2M TEMPERATURE (K) 27415 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8285, expected range: 0.4808 0.9750
BUFR LAND SYNOP 2M TEMPERATURE (K) 06799 : out of range
Severe: rms_fgdepar=10.8229, expected range: 0.0000 5.5846
Severe: avg_est_pge=0.8105, expected range: -0.2601 0.6266