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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-09-10 00:00

AMSUA EARS
NOAA-19 AMSUA RADIANCES CHANNEL 3 : out of range
Severe: stdev_norm_fgdepar=0.0449, expected range: -0.0145 0.0171
iasi
METOP-B IASI RADIANCES (13 channels affected) : out of range
2 times in the last 10 days for at least one item
Severe: avg_biascorr=0.2782, expected range: 0.2211 0.2388
All METOP-C IASI ALL CHANNELS Global : all data missing
Severe: obs_number=0, expected range: 22533.54 23231.71
gpsro
All TERRASAR-X GPSRO SETTING ALL HEIGHTS Global : all data missing
Severely_persistent: obs_number=0, expected range: 95.65 833.51
METOP-B GRAS SETTING HEIGHT 6-8 KM : out of range
Slight: stdev_norm_fgdepar=0.7804, expected range: 0.5397 0.7254
resat
AURA OMI OZONE, TOP PRESSURE LAYER 12-13 (HPA) : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=12.7757, expected range: 8.5777 9.6334
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 1010-1011 (HPA) : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-4.0385, expected range: -3.3301 -3.1501
NOAA-19 SBUV OZONE, TOP (19 pressure layers affected) : out of range
Slight: obs_number=611.0000, expected range: 501.9292 582.4458
Radiosondes
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 24 : all data missing
Severely_persistent: obs_number=0, expected range: 79.05 175.45
All HIGH RESO LAND TEMP ALL LAYERS South pole : all data missing
Severely_persistent: obs_number=0, expected range: 0.00 424.84
LAND TEMP TEMPERATURE (K) 47122 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=8.8408, expected range: 0.0000 4.5828
LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.7586, expected range: 0.0000 4.9765
Considerable: avg_fgdepar=-3.1044, expected range: -1.2766 1.3479
LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : missing
Severe: obs_number=0.0000, expected range: 29.5683 187.5803
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=3.6663, expected range: 0.6353 1.1629
Severe: obs_number=0.0000, expected range: 103.8182 167.6818
HIGH RESO LAND TEMP TEMPERATURE (K) 91948 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_fgdepar=9.8128, expected range: -0.6474 0.5481
Severe: rms_fgdepar=10.1981, expected range: 0.4145 1.2175
Severe: avg_pge=0.8288, expected range: -0.0170 0.0244
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=3.0665, expected range: 0.0000 1.5689
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=184.0000, expected range: 271.8929 284.3571
HIGH RESO LAND TEMP Q (G/KG) 76405 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=2.2270, expected range: 0.5530 1.2037
HIGH RESO LAND TEMP Q (G/KG) 72251 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=5.7994, expected range: 0.0000 2.6529
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=190.0000, expected range: 94.1667 99.1667
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 20 : all data missing
Severe: obs_number=0, expected range: 127.92 162.96
amdar
AMDAR TEMPERATURE (K) 00040525 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=6.3066, expected range: 0.0000 3.2863
Severe: avg_pge=0.8097, expected range: -0.2191 0.5204
WIGOS AMDAR WIND VECTOR DIFF (M/S) E1OINEZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.9086, expected range: 0.0000 6.6880
WIGOS AMDAR WIND VECTOR DIFF (M/S) VJ3H1DBA (2 pressure layers affecte : out of range
Severe: avg_fgdepar=21.3824, expected range: -8.0113 20.2316
Severe: rms_fgdepar=21.3824, expected range: 0.0000 21.2874
Severe: avg_pge=0.8704, expected range: -0.9090 0.7500
ADS-C WIND VECTOR DIFF (M/S) KO2CZDJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.4497, expected range: 0.0000 9.3095
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 61291 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=17.8641, expected range: 0.0000 8.7023
Severe: avg_pge=0.8007, expected range: -0.6644 0.7500
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 17928 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-581.5507, expected range: -1738.6509 1165.5698
Severely_persistent: rms_fgdepar=632.4591, expected range: 131.0504 1126.3194
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42467 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8111, expected range: -1.1462 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 86926 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-592.6441, expected range: -714.0653 -459.5480
Severely_persistent: rms_fgdepar=593.6897, expected range: 461.3591 714.6018
BUFR LAND SYNOP SURFACE PRESSURE (PA) 08347 : out of range
23 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=765.2519, expected range: -1486.5490 2436.4307
Severely_persistent: rms_fgdepar=765.6576, expected range: 0.0000 2405.1068
Severely_persistent: avg_pge=0.9424, expected range: -1.7941 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71387 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8806, expected range: 0.6976 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 68821 : out of range
Severe: rms_fgdepar=38.2160, expected range: 0.0000 21.2406
AUTOMATIC LAND SYNOP RH2M (%) 68572 : out of range
Severe: avg_fgdepar=51.1354, expected range: -66.1150 76.9456
Severe: rms_fgdepar=51.1354, expected range: 0.0000 51.1869
Severe: avg_pge=0.9860, expected range: -0.0907 0.1190
AUTOMATIC LAND SYNOP RH2M (%) 68387 : out of range
Severe: rms_fgdepar=47.1721, expected range: 0.0000 33.8873
Severe: avg_pge=0.9974, expected range: -0.0173 0.0285
AUTOMATIC LAND SYNOP RH2M (%) 34498 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=37.6656, expected range: 0.0000 18.2391
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 17880 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=509.2884, expected range: 0.0000 121.3564
Severe: avg_pge=0.8364, expected range: 0.0000 0.0000
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 89564 : out of range
Severe: rms_fgdepar=460.6222, expected range: 0.0000 203.5099
Severe: avg_pge=0.8477, expected range: -1.0290 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86210 : out of range
Severe: avg_pge=0.8778, expected range: -1.2951 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83912 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=409.0595, expected range: 0.0000 401.6349
Severe: avg_pge=0.8640, expected range: -0.7228 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40025 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=518.1018, expected range: 0.0000 94.2456
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 94656 : out of range
Severe: avg_fgdepar=839.0638, expected range: -121.7668 241.9019
Severe: rms_fgdepar=839.0638, expected range: 0.0000 210.3340
Severe: avg_pge=0.9328, expected range: -0.7063 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 94657 : out of range
Severe: avg_fgdepar=-540.5128, expected range: -198.8879 97.8994
Severe: rms_fgdepar=728.6281, expected range: 0.0000 201.7726
BUFR LAND SYNOP RH2M (%) 60162 : out of range
Severe: rms_fgdepar=33.3102, expected range: 0.0000 17.3821
BUFR LAND SYNOP RH2M (%) 16766 : out of range
Severe: rms_fgdepar=43.5522, expected range: 0.0000 23.9355
Severe: avg_pge=0.9983, expected range: -0.0167 0.0261
BUFR LAND SYNOP RH2M (%) 71747 : out of range
Severe: rms_fgdepar=30.0431, expected range: 0.0000 12.0434
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48921 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8625, expected range: -1.6504 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94656 : out of range
Severe: avg_fgdepar=821.2859, expected range: -126.0353 227.5361
Severe: rms_fgdepar=821.2859, expected range: 0.0000 172.8640
Severe: avg_pge=0.9311, expected range: -0.8448 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 42328 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=318.9836, expected range: 0.0000 56.6803
Severe: avg_pge=0.8352, expected range: -0.1719 0.1975
ship
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 3FMI2 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9110, expected range: 0.5014 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) DGXS2 : out of range
Severe: avg_pge=0.8076, expected range: 0.5636 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 3E3566 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=590.9971, expected range: -932.9807 1161.5648
Severe: rms_fgdepar=590.9971, expected range: 0.0000 675.2773
Severe: avg_pge=0.8216, expected range: -0.8385 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V7978 : out of range
Severe: avg_fgdepar=515.0319, expected range: -785.9653 428.4430
Severe: rms_fgdepar=515.0319, expected range: 0.0000 707.7647
Severe: avg_pge=0.8026, expected range: -0.9311 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9HRJ9 : out of range
Severe: rms_fgdepar=361.0452, expected range: 0.0000 127.6158
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VABC : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=920.0710, expected range: 35.0328 1388.1842
Severe: rms_fgdepar=930.6977, expected range: 35.8548 1391.4950
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 7JLQ : out of range
Severe: avg_fgdepar=1016.0699, expected range: -103.9768 105.7191
Severe: rms_fgdepar=1016.0699, expected range: 0.0000 76.5700
Severe: avg_pge=0.9017, expected range: 0.0000 0.0000
BUFR SHIP SYNOP SURFACE PRESSURE (PA) WLIU : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8368, expected range: 0.6936 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4601592 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=669.6553, expected range: -1240.6524 1053.7313
Severely_persistent: rms_fgdepar=673.5757, expected range: -892.9101 1281.2125
Severely_persistent: avg_pge=0.9102, expected range: -1.6808 0.7500
MOORED BUOYS SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=93.0000, expected range: 160.5056 172.2003
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401572 : out of range
Severe: rms_fgdepar=350.9160, expected range: 9.1487 117.0197
DRIFTING BUOYS SURFACE PRESSURE (PA) 6202635 : out of range
Severe: avg_pge=0.8308, expected range: -1.1573 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4101719 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=396.0868, expected range: 0.0000 80.7235
Severe: avg_pge=0.8463, expected range: -0.1704 0.2133
snow
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-774.0066, expected range: -773.4753 -772.0850
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=774.0066, expected range: 772.0853 773.4752
BUFR LAND SYNOP SNOW (CM) _MF12FF7 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=55.4545, expected range: 40.1074 53.9492
BUFR LAND SYNOP SNOW (CM) _MF12FF7 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=55.7201, expected range: 42.5072 52.6382
BUFR LAND SYNOP SNOW (CM) _MI1F9AC : out of range
22 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=50.8000, expected range: 38.4123 59.2351
BUFR LAND SYNOP SNOW (CM) _MI1F9AC : out of range
22 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=51.7475, expected range: 39.7323 59.5116
t2m
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI13149 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-14.9138, expected range: -19.2506 -14.9832
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI13149 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=14.9486, expected range: 14.9991 19.2599
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-13.6286, expected range: -21.0780 -12.0200
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=13.6330, expected range: 12.0359 21.0784
METAR 2M TEMPERATURE (K) KLSE : out of range
Severe: rms_fgdepar=11.9072, expected range: 1.2548 3.6257
METAR 2M TEMPERATURE (K) FVMV : out of range
Severe: avg_fgdepar=-12.4869, expected range: -4.4713 3.2873
Severe: rms_fgdepar=12.4869, expected range: 0.0000 10.6480
BUFR LAND SYNOP 2M TEMPERATURE (K) 89376 : out of range
Severe: avg_fgdepar=12.4423, expected range: -6.9224 8.7957
Severe: rms_fgdepar=12.6709, expected range: 0.0000 6.7569
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI10688 : out of range
Severe: rms_fgdepar=11.4084, expected range: 1.4130 5.7219
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
Considerable: obs_number=151.0000, expected range: 351.8414 416.0336
rh2m
AUTOMATIC LAND SYNOP RH2M (%) 16738 : out of range
Severe: rms_fgdepar=36.7614, expected range: 0.0000 16.5144
MANUAL LAND SYNOP RH2M (%) 83780 : out of range
Severe: rms_fgdepar=36.2651, expected range: 0.0000 20.4974