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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-10-05 12:00

iasi
METOP-C IASI RADIANCES (220 channels affected) : out of range
Severe: obs_number=13028.0000, expected range: 22733.3492 23155.5920
cris
NOAA20 CRIS RADIANCES CHANNEL 64 : out of range
Considerable: obs_number=1714.0000, expected range: 2069.0889 2415.9699
mhs
METOP-C MHS ALLSKY RADIANCES CHANNEL 3 : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=28607.0000, expected range: 46301.3276 50507.9666
METOP-C MHS ALLSKY RADIANCES CHANNEL 4 : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=27186.0000, expected range: 44927.5278 47684.3545
METOP-C MHS ALLSKY RADIANCES CHANNEL 5 : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=16322.0000, expected range: 27202.1966 30147.2152
mwhs2
FY-3D MWHS2 ALLSKY RADIANCES CHANNEL 14 : out of range
2 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.9343, expected range: 1.0004 1.1283
gpsro
All TERRASAR-X GPSRO SETTING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 128.89 879.46
KOMPSAT-5 GPSRO SETTING HEIGHT 2-4 KM : missing
Severe: obs_number=0.0000, expected range: 0.0000 1277.1582
SENTINEL 6A GPSRO SETTING (14 impact heights affected) : out of range
Considerable: obs_number=719.0000, expected range: 2669.5324 3858.1147
scatt
METOP-B ASCAT WIND VECTOR DIFF (M/S) : out of range
Slight: obs_number=30798.0000, expected range: 33429.8741 37532.7142
resat
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 1-2 (HPA) : out of range
34 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0154, expected range: -0.0078 -0.0033
Severely_persistent: avg_fgdepar=-0.0807, expected range: -0.0238 0.0126
Severely_persistent: stdev_fgdepar=0.0184, expected range: 0.0013 0.0090
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 10-11 (HPA) : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0521, expected range: -0.0468 -0.0459
METOP-B GOME-2 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_biascorr=-0.7923, expected range: -1.0190 -0.9301
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 1010-1011 (HPA) : out of range
18 times in the last 10 days for at least one item
Slight: avg_fgdepar=-4.0613, expected range: -3.3301 -3.3301
Radiosondes
LAND TEMP TEMPERATURE (K) 24641 PRESSURE LAYER 300-600 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=9.0984, expected range: -1.3510 0.4020
Severe: rms_fgdepar=9.2765, expected range: 0.0000 1.6306
Severe: avg_pge=0.8956, expected range: -1.0845 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 24641 (3 pressure layers affected) : out of range
Severe: rms_fgdepar=16.3064, expected range: 0.5340 4.5208
LAND TEMP WIND VECTOR DIFF (M/S) 24641 (2 pressure layers affected) : out of range
Severe: avg_pge=0.8273, expected range: -0.1748 0.2508
LAND TEMP WIND VECTOR DIFF (M/S) 21824 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=15.1740, expected range: 0.0000 9.0558
Severe: avg_pge=0.8447, expected range: -0.8042 0.7500
LAND TEMP Q (G/KG) 67197 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=6.7741, expected range: 0.0000 2.9100
HIGH RESO LAND TEMP Q (G/KG) 45004 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=4.3463, expected range: 0.1007 2.0017
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 40 : all data missing
Severe: obs_number=0, expected range: 1.14 285.00
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 81 : all data missing
Severe: obs_number=0, expected range: 123.09 141.16
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected : out of range
Considerable: obs_number=561.0000, expected range: 641.5490 667.7010
amdar
WIGOS AMDAR TEMPERATURE (K) CNNKXR PRESSURE LAYER 300-600 (HPA) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8504, expected range: 0.6573 0.7500
WIGOS AMDAR TEMPERATURE (K) EU0850 PRESSURE LAYER 0-300 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.3276, expected range: 0.0000 1.3321
Severe: avg_pge=0.8514, expected range: -0.0768 0.0938
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 68392 : out of range
29 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=587.1213, expected range: -1718.6859 812.6053
Severely_persistent: rms_fgdepar=588.0895, expected range: 0.0000 1749.6231
Severely_persistent: avg_pge=0.9200, expected range: 0.3700 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71588 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=520.1288, expected range: 373.9319 621.9652
MANUAL LAND SYNOP RH2M (%) 42661 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9986, expected range: -0.4162 0.5416
MANUAL LAND SYNOP RH2M (%) 61272 : out of range
Severe: rms_fgdepar=34.6394, expected range: 0.0000 23.9882
Severe: avg_pge=0.9299, expected range: -0.0249 0.0391
MANUAL LAND SYNOP RH2M (%) 76644 : out of range
Severe: rms_fgdepar=37.9225, expected range: 0.0000 21.0511
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 62200 : out of range
Severe: rms_fgdepar=534.5428, expected range: 0.0000 207.1575
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 87563 : out of range
Severe: rms_fgdepar=477.5239, expected range: 0.0000 99.1334
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42704 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=-714.9681, expected range: -149.3564 194.4905
Severe: rms_fgdepar=714.9681, expected range: 0.0000 171.2570
Severe: avg_pge=0.9077, expected range: -0.5379 0.6824
BUFR LAND SYNOP RH2M (%) 06750 : out of range
Severe: rms_fgdepar=41.4955, expected range: 0.0000 21.4264
BUFR LAND SYNOP RH2M (%) _170DB05 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=-51.1912, expected range: -55.9126 -2.0682
BUFR LAND SYNOP RH2M (%) _170DB05 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=52.5946, expected range: 1.4757 57.0453
BUFR LAND SYNOP RH2M (%) _170DB05 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9104, expected range: -1.4674 0.7500
BUFR LAND SYNOP RH2M (%) 34199 : out of range
Severe: rms_fgdepar=30.6454, expected range: 1.0533 16.2064
BUFR LAND SYNOP SURFACE PRESSURE (PA) 37235 : out of range
Severe: rms_fgdepar=606.1721, expected range: 0.0000 158.1709
BUFR LAND SYNOP SURFACE PRESSURE (PA) 41965 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=-741.0070, expected range: -480.5395 423.8860
Severe: rms_fgdepar=741.0070, expected range: 0.0000 388.4498
Severe: avg_pge=0.9117, expected range: -0.7510 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 31137 : out of range
Severe: rms_fgdepar=350.8762, expected range: 0.0000 140.6176
BUFR LAND SYNOP SURFACE PRESSURE (PA) 96797 : out of range
Severe: rms_fgdepar=544.1787, expected range: 0.0000 154.2237
BUFR LAND SYNOP RH2M (%) : out of range
Considerable: obs_number=132.0000, expected range: 292.5216 331.2284
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9HA4048 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=1010.7719, expected range: -2071.9327 2946.7341
Severely_persistent: rms_fgdepar=1010.7719, expected range: -1897.1663 2834.2187
Severely_persistent: avg_pge=0.8946, expected range: -1.8204 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) WDM2180 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=16.4000, expected range: 0.0000 14.3796
Severe: avg_pge=0.8928, expected range: -1.0925 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 9HJB9 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=16.8223, expected range: 0.0000 15.7579
Severe: avg_pge=0.9114, expected range: -0.6559 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) DCPP2 : out of range
Severe: avg_fgdepar=-1170.2615, expected range: -174.6284 18.2214
Severe: rms_fgdepar=1170.2615, expected range: 0.0000 174.6284
Severe: avg_pge=0.9226, expected range: -0.7266 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRJH7 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=686.1550, expected range: -779.2804 1033.6828
Severe: rms_fgdepar=686.1550, expected range: 0.0000 973.5545
Severe: avg_pge=0.8547, expected range: -0.9406 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) V7TN7 : out of range
Severe: rms_fgdepar=432.0448, expected range: 0.0000 322.5535
Severe: avg_pge=0.8154, expected range: -0.3191 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRPY7 : out of range
Severe: avg_fgdepar=665.4098, expected range: 60.9879 593.3342
Severe: rms_fgdepar=665.4098, expected range: 60.0791 595.0334
Severe: avg_pge=0.8516, expected range: 0.0997 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) ONLF : out of range
Severe: avg_fgdepar=-703.5732, expected range: -533.7021 62.6925
Severe: rms_fgdepar=715.9703, expected range: 0.0000 534.0896
Severe: avg_pge=0.8708, expected range: -0.5489 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 5401581 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=528.6409, expected range: -1027.4032 694.0885
Severely_persistent: rms_fgdepar=528.7475, expected range: 0.0000 809.0451
Severely_persistent: avg_pge=0.8947, expected range: -0.9579 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 3301581 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=531.7755, expected range: -430.0134 493.7843
Severe: rms_fgdepar=540.6544, expected range: -378.7071 501.5877
Severe: avg_pge=0.8903, expected range: -0.9666 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4402605 : out of range
Severe: rms_fgdepar=301.9478, expected range: 0.0000 109.9165
DRIFTING BUOYS SURFACE PRESSURE (PA) 3201777 : out of range
Severe: rms_fgdepar=406.2242, expected range: 0.0000 306.6433
Severe: avg_pge=0.8720, expected range: -1.0533 0.7500
snow
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
36 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-778.5285, expected range: -806.5556 -747.0004
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
36 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=778.5289, expected range: 747.6399 806.1297
BUFR LAND SYNOP SNOW (CM) _MF12FF7 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=51.4545, expected range: 29.7738 58.0379
BUFR LAND SYNOP SNOW (CM) _MF12FF7 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=51.4570, expected range: 35.4015 56.3898
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71052 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-13.9946, expected range: -20.1071 -4.3667
Severely_persistent: rms_fgdepar=13.9975, expected range: 4.3178 20.4869
METAR 2M TEMPERATURE (K) KTLH : out of range
16 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=12.3080, expected range: 6.6404 20.2938
BUFR LAND SYNOP 2M TEMPERATURE (K) 71052 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-13.9615, expected range: -20.3370 -4.5046
Severely_persistent: rms_fgdepar=13.9767, expected range: 4.4765 20.6553
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI13149 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.4436, expected range: -19.4690 -7.1296
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI13149 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=15.4475, expected range: 7.1318 19.5344
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-14.1945, expected range: -16.9836 -6.0350
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=14.6722, expected range: 5.9202 17.2139
MANUAL LAND SYNOP 2M TEMPERATURE (K) 76848 : out of range
Severe: rms_fgdepar=10.0805, expected range: 0.0000 5.0318
METAR 2M TEMPERATURE (K) KPGD : out of range
Severe: rms_fgdepar=13.8116, expected range: 0.0000 4.9399
rh2m
METAR RH2M (%) ENAN : out of range
Severe: rms_fgdepar=35.3205, expected range: 0.0000 12.3314