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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2021-06-10 00:00

amsua
METOP-C AMSUA RADIANCES (10 channels affected) : out of range
Considerable: obs_number=10495.0000, expected range: 15021.4387 21532.0613
METOP-C AMSUA RADIANCES CHANNEL 11 : out of range
Considerable: avg_biascorr=-0.0480, expected range: -0.0378 -0.0183
mhs
NOAA-19 MHS ALLSKY RADIANCES CHANNEL 5 : out of range
1 times in the last 10 days for at least one item
Slight: obs_number=28370.0000, expected range: 29376.0556 31415.9444
mwhs2
FY-3D MWHS2 ALLSKY RADIANCES (8 channels affected) : out of range
Considerable: obs_number=14623.0000, expected range: 15762.9764 17795.8986
Radiosondes
LAND TEMP Q (G/KG) 41217 PRESSURE LAYER 900-1200 (HPA) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=6.4038, expected range: 0.0000 13.0680
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 85 : all data missing
Severely_persistent: obs_number=0, expected range: 32.54 229.06
LAND TEMP Q (G/KG) 31538 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=3.0290, expected range: 0.0000 1.5693
LAND TEMP Q (G/KG) 25913 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=2.3069, expected range: 0.0000 1.2729
LAND TEMP WIND VECTOR DIFF (M/S) 25123 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=16.1497, expected range: 0.5592 5.1786
Severe: avg_pge=0.8983, expected range: -0.5847 0.7500
HIGH RESO LAND TEMP Q (G/KG) 72261 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=4.0090, expected range: 0.6851 2.1107
HIGH RESO LAND TEMP Q (G/KG) 50953 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=3.0460, expected range: 0.0000 1.6253
HIGH RESO LAND TEMP Q (G/KG) 17516 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=3.0611, expected range: 0.3012 1.6348
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 88 : all data missing
Severe: obs_number=0, expected range: 110.15 157.56
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 95 : all data missing
Severe: obs_number=0, expected range: 56.27 169.23
All HIGH RESO LAND TEMP ALL LAYERS South Atlantic : all data missing
Severe: obs_number=0, expected range: 29.60 518.91
LAND TEMP Q (G/KG) PRESSURE LAYER 600-900 (HPA) : out of range
Considerable: obs_number=524.0000, expected range: 581.4673 677.5327
HIGH RESO LAND TEMP TEMPERATURE (K) (4 pressure layers affected) : out of range
Considerable: obs_number=630.0000, expected range: 736.7144 851.5356
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
3 times in the last 10 days for at least one item
Considerable: obs_number=461.0000, expected range: 349.4539 376.0461
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
Considerable: obs_number=70.0000, expected range: 82.7620 101.9880
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 300-600 (HPA) : out of range
1 times in the last 10 days for at least one item
Considerable: avg_fgdepar=1.5922, expected range: -0.5812 0.7569
Considerable: rms_fgdepar=2.4816, expected range: 0.0000 1.4580
Considerable: avg_fgdepar=1.5922, expected range: -0.5812 0.7569
Considerable: rms_fgdepar=2.4816, expected range: 0.0000 1.4580
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
Considerable: obs_number=563.0000, expected range: 463.0104 494.5452
amdar
AMDAR TEMPERATURE (K) PRESSURE LAYER 900-1200 (HPA) : missing
2 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 0.0000 251.0317
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 42165 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=16.3433, expected range: 0.0000 12.8921
Severe: avg_pge=0.8212, expected range: -0.3502 0.4089
LAND PILOT WIND VECTOR DIFF (M/S) 97096 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=15.1324, expected range: 0.0000 10.8736
Severe: avg_pge=0.8772, expected range: -0.5731 0.7500
LAND PILOT WIND VECTOR DIFF (M/S) 97120 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=22.9076, expected range: -16.2604 23.2132
BUFR LAND PILOT WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : missing
2 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 60.4763 124.9522
All BUFR LAND PILOT ALL LAYERS North West Pacific : all data missing
Severe: obs_number=0, expected range: 60.48 124.95
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 68832 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8981, expected range: -1.7104 0.7500
MANUAL LAND SYNOP RH2M (%) 41560 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=53.7668, expected range: 6.2608 77.0687
Severely_persistent: rms_fgdepar=53.7668, expected range: 6.5462 76.9572
Severely_persistent: avg_pge=0.9985, expected range: -0.6807 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 68392 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=-60.2357, expected range: -27.5574 24.4836
Severe: rms_fgdepar=60.2357, expected range: 0.0000 11.7450
Severe: avg_pge=0.9999, expected range: 0.0024 0.0027
MANUAL LAND SYNOP RH2M (%) 61043 : out of range
Severe: rms_fgdepar=30.8125, expected range: 2.5822 10.2131
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 64040 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8573, expected range: -1.5141 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42460 : out of range
Severe: avg_fgdepar=828.6222, expected range: -595.8604 497.1341
Severe: rms_fgdepar=828.6222, expected range: 0.0000 351.8192
Severe: avg_pge=0.9380, expected range: -1.5112 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 89251 : out of range
Severe: rms_fgdepar=464.1760, expected range: 0.0000 193.9747
Severe: avg_pge=0.8739, expected range: -0.7072 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 96315 : out of range
Severe: rms_fgdepar=493.2213, expected range: 0.0000 252.9860
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42935 : out of range
Severe: avg_pge=0.8704, expected range: -1.1912 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 44229 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=1216.8918, expected range: 734.3767 1505.4425
Severe: rms_fgdepar=1216.8918, expected range: 734.3767 1505.4425
BUFR LAND SYNOP RH2M (%) 94300 : out of range
Severe: avg_fgdepar=-59.3636, expected range: -22.3736 13.6591
Severe: rms_fgdepar=59.4114, expected range: 0.0000 23.1105
Severe: avg_pge=1.0000, expected range: -0.0069 0.0154
BUFR LAND SYNOP RH2M (%) 60250 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=30.5216, expected range: 0.0000 12.8605
BUFR LAND SYNOP RH2M (%) 71171 : out of range
Severe: rms_fgdepar=37.5066, expected range: 0.0000 16.0555
BUFR LAND SYNOP RH2M (%) 71547 : out of range
Severe: rms_fgdepar=32.5253, expected range: 0.0000 11.0018
BUFR LAND SYNOP RH2M (%) 72658 : out of range
Severe: avg_pge=0.9810, expected range: -0.0140 0.0260
BUFR LAND SYNOP SURFACE PRESSURE (PA) 98446 : out of range
Severe: rms_fgdepar=305.0794, expected range: 0.0000 122.4137
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) V7WS5 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=804.7622, expected range: 108.3973 1088.4884
Severely_persistent: rms_fgdepar=804.7622, expected range: 132.1374 1071.1920
Severely_persistent: avg_pge=0.8713, expected range: 0.6369 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) UHOM : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=1021.0599, expected range: -2335.8047 1138.4677
Severely_persistent: rms_fgdepar=1021.0599, expected range: 0.0000 2461.8663
Severely_persistent: avg_pge=0.9041, expected range: -0.7431 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) UDAD : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8988, expected range: -0.6848 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) D7UR : out of range
Severe: avg_pge=0.8633, expected range: -0.9087 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V9631 : out of range
Severe: avg_fgdepar=518.1373, expected range: -246.1971 644.7486
Severe: rms_fgdepar=518.1373, expected range: 0.0000 628.6873
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 2HDG2 : out of range
Severe: rms_fgdepar=534.4347, expected range: 0.0000 818.2031
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRAA8 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=522.6301, expected range: -601.7440 636.3056
Severe: rms_fgdepar=522.6301, expected range: 0.0000 435.7389
Severe: avg_pge=0.8058, expected range: -1.3099 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 5601645 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=652.7382, expected range: -1058.8096 1163.7031
Severely_persistent: rms_fgdepar=652.7382, expected range: -929.1183 1254.2567
Severely_persistent: avg_pge=0.9151, expected range: -1.7247 0.7500
MOORED BUOYS SURFACE PRESSURE (PA) 4400058 : out of range
Severe: rms_fgdepar=506.4136, expected range: 11.3468 206.1941
Severe: avg_pge=0.8165, expected range: -0.0634 0.6771
DRIFTING BUOYS SURFACE PRESSURE (PA) 3301607 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=356.1851, expected range: 0.0000 102.4349
Severe: avg_pge=0.8472, expected range: -0.0926 0.1249
snow
MANUAL LAND SYNOP SNOW (CM) 20107 : out of range
Severe: avg_fgdepar=89.3617, expected range: 84.9029 138.6796
Severe: rms_fgdepar=89.3617, expected range: 84.9029 138.6796
BUFR LAND SYNOP SNOW (CM) 20107 : out of range
Severe: avg_fgdepar=88.6135, expected range: 84.0489 136.7347
Severe: rms_fgdepar=88.6135, expected range: 84.0489 136.7347
t2m
BUFR LAND SYNOP 2M TEMPERATURE (K) 27648 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=12.0395, expected range: -11.7577 20.7999
MANUAL LAND SYNOP 2M TEMPERATURE (K) 32076 : out of range
Severe: avg_fgdepar=-12.3784, expected range: -7.6420 2.8260
Severe: rms_fgdepar=12.5544, expected range: 0.0000 7.5120
MANUAL LAND SYNOP 2M TEMPERATURE (K) 42488 : out of range
Severe: rms_fgdepar=10.9922, expected range: 0.0000 4.8804
METAR 2M TEMPERATURE (K) EDVK : out of range
Severe: rms_fgdepar=10.4211, expected range: 0.1955 4.8342
METAR 2M TEMPERATURE (K) KVCT : out of range
Severe: rms_fgdepar=10.2872, expected range: 0.5324 3.2378
METAR 2M TEMPERATURE (K) KRIV : out of range
Severe: avg_fgdepar=-15.1410, expected range: -3.4794 3.0346
Severe: rms_fgdepar=15.1410, expected range: 0.0000 6.6131
BUFR LAND SYNOP 2M TEMPERATURE (K) 32076 : out of range
Severe: avg_fgdepar=-12.4265, expected range: -7.6919 2.7758
Severe: rms_fgdepar=12.6019, expected range: 0.0000 7.5963
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=195.0000, expected range: 230.4715 258.5285
rh2m
All BUFR LAND SYNOP WMO BLOCK 76 : all data missing
Severely_persistent: obs_number=0, expected range: 7.05 324.94
AUTOMATIC LAND SYNOP RH2M (%) 38191 : out of range
Severe: rms_fgdepar=32.7000, expected range: 0.0000 18.2552