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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-08-01 12:00

cris
All NPP CRIS ALL CHANNELS Global : all data missing
Severe: obs_number=0, expected range: 14897.63 15980.17
atms
All NPP ATMS ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 11689.75 14179.45
ssmis
DMSP-17 SSMIS RADIANCES (5 channels affected) : out of range
4 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.1160, expected range: 0.4890 0.4890
DMSP-18 SSMIS RADIANCES CHANNEL 9 : out of range
18 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0705, expected range: 0.5113 0.5113
DMSP-18 SSMIS RADIANCES CHANNEL 10 : out of range
19 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0443, expected range: 0.5874 0.5874
DMSP-18 SSMIS RADIANCES CHANNEL 11 : out of range
14 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0321, expected range: 0.6393 0.6393
Atmospheric Motion Vector
All AQUA MODIS CLEAR WV ALL LAYERS Global : all data missing
Severely_persistent: obs_number=0, expected range: 0.00 1818.39
All NPP VIIRS AMV IR ALL LAYERS Global : all data missing
Severely_persistent: obs_number=0, expected range: 87.66 1059.12
Radiosondes
LAND TEMP Q (G/KG) 17351 PRESSURE LAYER 900-1200 (HPA) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=6.6776, expected range: -4.9171 14.5076
Severely_persistent: rms_fgdepar=6.7431, expected range: 0.0000 14.5185
LAND TEMP Q (G/KG) 40373 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=3.1645, expected range: 0.0000 1.3240
HIGH RESO LAND TEMP Q (G/KG) 47971 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=2.1632, expected range: 0.0000 1.2230
HIGH RESO LAND TEMP Q (G/KG) 28225 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=2.3641, expected range: 0.3917 1.3187
HIGH RESO LAND TEMP Q (G/KG) 57993 PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=7.1351, expected range: -11.0729 14.1520
Severe: rms_fgdepar=7.4575, expected range: 0.0000 11.0079
HIGH RESO LAND TEMP TEMPERATURE (K) 53068 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=8.2861, expected range: 0.3246 2.5025
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=3.2702, expected range: 0.5961 2.0103
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
Severe: obs_number=51.0000, expected range: 86.9231 94.1880
All HIGH RESO SEA TEMP ALL LAYERS North West Pacific : all data missing
Severe: obs_number=0, expected range: 60.10 163.33
amdar
TAMDAR WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : missing
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=0.0000, expected range: 0.0000 265.4914
WIGOS AMDAR Q (G/KG) BSTXQVBA PRESSURE LAYER 900-1200 (HPA) : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-6.3301, expected range: -9.9413 -0.2452
Severely_persistent: rms_fgdepar=6.3521, expected range: 0.7539 9.8299
TAMDAR WIND VECTOR DIFF (M/S) 00005178 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_fgdepar=21.8852, expected range: -2.9157 32.7638
Severe: rms_fgdepar=22.1509, expected range: 0.0000 32.8200
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 01405 PRESSURE LAYER 300-600 : out of range
Severe: rms_fgdepar=15.1365, expected range: 0.0000 7.7660
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 48565 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_fgdepar=30.4025, expected range: 1.5660 14.4008
Severe: rms_fgdepar=40.7066, expected range: 1.9275 17.0241
LAND PILOT WIND VECTOR DIFF (M/S) 42435 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=15.4948, expected range: 0.0000 11.7171
Severe: avg_pge=0.8770, expected range: -0.3361 0.7500
LAND PILOT WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
Considerable: rms_fgdepar=13.2609, expected range: 3.8160 9.4824
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 17952 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8182, expected range: -1.5373 0.7500
MANUAL LAND SYNOP RH2M (%) 62011 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8270, expected range: -1.4001 0.7500
BUFR LAND SYNOP Z (M) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8253, expected range: -0.6754 0.7500
Severely_persistent: avg_pge=0.8253, expected range: -0.6754 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
Severe: rms_fgdepar=177.1014, expected range: 24.9918 88.6927
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 93498 : out of range
Severe: rms_fgdepar=316.5702, expected range: 0.0000 176.0089
AUTOMATIC LAND SYNOP RH2M (%) 35816 : out of range
Severe: rms_fgdepar=43.2077, expected range: 0.0000 21.7201
Severe: avg_pge=0.9981, expected range: -0.0187 0.0277
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 63450 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=481.7041, expected range: 0.0000 220.6117
Severe: avg_pge=0.8199, expected range: 0.0000 0.0000
MANUAL LAND SYNOP RH2M (%) 44212 : out of range
Severe: rms_fgdepar=35.2444, expected range: 0.0000 18.2647
MANUAL LAND SYNOP RH2M (%) 66285 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9892, expected range: 0.3852 0.7500
MANUAL LAND SYNOP RH2M (%) 83319 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8303, expected range: -1.3766 0.7500
BUFR LAND SYNOP Z (M) 08103 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8253, expected range: -0.6754 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 43160 : out of range
Severe: avg_fgdepar=541.4698, expected range: 22.1109 162.9038
Severe: rms_fgdepar=541.4698, expected range: 22.1109 162.9038
Severe: avg_pge=0.8908, expected range: -0.7283 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48062 : out of range
Severe: avg_fgdepar=668.8599, expected range: -177.9776 106.0071
Severe: rms_fgdepar=669.5685, expected range: 0.0000 246.2857
Severe: avg_pge=0.9132, expected range: -0.4971 0.6314
BUFR LAND SYNOP SURFACE PRESSURE (PA) 43325 : out of range
Severe: rms_fgdepar=310.8426, expected range: 0.0000 267.0689
Severe: avg_pge=0.8386, expected range: -0.9880 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48085 : out of range
Severe: avg_fgdepar=745.3120, expected range: -131.9180 90.0329
Severe: rms_fgdepar=745.3120, expected range: 0.0000 162.4234
Severe: avg_pge=0.9216, expected range: -0.4416 0.5013
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
Severe: obs_number=766.0000, expected range: 920.2406 937.5094
BUFR LAND SYNOP RH2M (%) 33801 : out of range
Severe: rms_fgdepar=30.6120, expected range: 0.0000 14.6287
BUFR LAND SYNOP RH2M (%) 33791 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=39.4469, expected range: 0.0000 12.6270
BUFR LAND SYNOP RH2M (%) 33833 : out of range
Severe: rms_fgdepar=34.5620, expected range: 0.0000 12.6963
BUFR LAND SYNOP RH2M (%) 34514 : out of range
Severe: avg_fgdepar=-50.1711, expected range: -11.4754 16.5122
Severe: rms_fgdepar=50.1711, expected range: 0.0000 22.3207
Severe: avg_pge=1.0000, expected range: -0.0224 0.0328
BUFR LAND SYNOP RH2M (%) 36736 : out of range
Severe: rms_fgdepar=35.1238, expected range: 0.0000 32.2233
Severe: avg_pge=0.9977, expected range: -1.4635 0.7500
BUFR LAND SYNOP RH2M (%) 34407 : out of range
Severe: rms_fgdepar=31.7091, expected range: 0.0000 17.3168
BUFR LAND SYNOP RH2M (%) 71488 : out of range
Severe: rms_fgdepar=40.2171, expected range: 0.0000 19.1739
BUFR LAND SYNOP RH2M (%) 33719 : out of range
Severe: rms_fgdepar=38.6268, expected range: 0.0000 13.6263
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) PJWM : out of range
23 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=698.3149, expected range: 209.5361 1121.0129
Severely_persistent: rms_fgdepar=698.3149, expected range: 209.5361 1121.0129
BUFR SHIP SYNOP SURFACE PRESSURE (PA) TBWUK32 : out of range
Severe: rms_fgdepar=743.2201, expected range: 0.0000 474.2426
BUFR SHIP SYNOP SURFACE PRESSURE (PA) OXFU2 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=547.1552, expected range: 307.7070 629.4705
Severe: rms_fgdepar=547.2555, expected range: 309.2594 628.5775
BUFR SHIP SYNOP SURFACE PRESSURE (PA) D5VT5 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=923.8829, expected range: -1421.2601 1997.3283
Severe: rms_fgdepar=923.8829, expected range: 0.0000 1662.1685
Severe: avg_pge=0.8892, expected range: -1.0237 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401851 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-652.1856, expected range: -728.3134 513.9059
Severely_persistent: rms_fgdepar=652.5650, expected range: -519.2518 745.1445
Severely_persistent: avg_pge=0.9198, expected range: -1.1184 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 5401633 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8379, expected range: -1.0528 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6102804 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8127, expected range: -1.9278 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1401817 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8282, expected range: -0.5059 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 0022692 : out of range
Severe: avg_pge=0.8178, expected range: -1.1972 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 3301578 : out of range
Severe: rms_fgdepar=499.9224, expected range: 0.0000 79.0873
Severe: avg_pge=0.9018, expected range: -0.0557 0.0651
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=-772.6140, expected range: -774.3259 -771.5581
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=772.6142, expected range: 771.5582 774.3260
AUTOMATIC LAND SYNOP SNOW (CM) 73013 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=57.0000, expected range: -3.9745 9.2245
Severe: rms_fgdepar=57.0000, expected range: 0.0000 9.2245
MANUAL LAND SYNOP SNOW (CM) 87803 : out of range
Severe: avg_fgdepar=-64.6628, expected range: -76.8029 -60.7980
Severe: rms_fgdepar=64.6628, expected range: 58.6271 75.8897
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89004 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-16.3339, expected range: -24.9771 17.4600
Severely_persistent: rms_fgdepar=16.3339, expected range: 0.0000 25.0622
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-13.7006, expected range: -12.9098 -4.1021
Severely_persistent: rms_fgdepar=13.7178, expected range: 4.1633 13.0979
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89004 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.1140, expected range: -25.6911 17.9640
Severely_persistent: rms_fgdepar=15.1140, expected range: -13.5985 24.1592
METAR 2M TEMPERATURE (K) UGMS : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=15.2771, expected range: 7.4485 15.1322
Severely_persistent: rms_fgdepar=15.2844, expected range: 7.5436 15.1986
BUFR LAND SYNOP 2M TEMPERATURE (K) 89004 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.6695, expected range: -26.8666 16.1972
Severely_persistent: rms_fgdepar=15.6790, expected range: 0.0000 24.6305
BUFR LAND SYNOP 2M TEMPERATURE (K) 78896 : out of range
21 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-16.7076, expected range: -23.7380 -0.3203
Severely_persistent: rms_fgdepar=16.7111, expected range: 1.3042 23.7933
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-13.7339, expected range: -12.9251 -4.1976
Severely_persistent: rms_fgdepar=13.7497, expected range: 4.2566 13.1147
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=-16.9967, expected range: -9.5404 8.0582
Severe: rms_fgdepar=16.9990, expected range: 0.0000 8.9162
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
Severe: avg_lsm=0.6984, expected range: 0.8455 0.8988
METAR 2M TEMPERATURE (K) KNFL : out of range
Severe: rms_fgdepar=10.3887, expected range: 0.4686 4.9034
BUFR LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=-17.0582, expected range: -9.8330 8.1699
Severe: rms_fgdepar=17.0604, expected range: 0.0000 9.2720
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
Severe: obs_number=810.0000, expected range: 969.8969 977.9920
rh2m
AUTOMATIC LAND SYNOP RH2M (%) : out of range
Severe: avg_lsm=0.6976, expected range: 0.8245 0.9255