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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-08-14 12:00

amsua
NOAA-19 AMSUA ALL SKY RADIANCES CHANNEL 8 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.1057, expected range: -0.5421 -0.2586
iasi
METOP-B IASI RADIANCES CHANNEL 284 : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.0069, expected range: -0.0291 -0.0170
METOP-B IASI RADIANCES CHANNEL 320 : out of range
1 times in the last 10 days for at least one item
Considerable: avg_biascorr=-0.0330, expected range: -0.0531 -0.0403
METOP-C IASI RADIANCES CHANNEL 284 : out of range
1 times in the last 10 days for at least one item
Considerable: avg_biascorr=-0.0174, expected range: -0.0341 -0.0234
cris
All NPP CRIS ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 14977.99 15832.95
atms
All NPP ATMS ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 11500.42 13940.17
gpsro
All KOMPSAT-5 GPSRO SETTING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 110.97 743.91
Atmospheric Motion Vector
All AQUA MODIS CLEAR WV ALL LAYERS Global : all data missing
Severely_persistent: obs_number=0, expected range: 118.44 1097.51
All NPP VIIRS AMV IR ALL LAYERS Global : all data missing
Severely_persistent: obs_number=0, expected range: 183.86 1421.23
Radiosondes
LAND TEMP Q (G/KG) 38341 PRESSURE LAYER 900-1200 (HPA) : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=6.1093, expected range: -6.8588 20.5695
Severely_persistent: rms_fgdepar=6.1792, expected range: 0.0000 20.5925
LAND TEMP Q (G/KG) 40417 PRESSURE LAYER 900-1200 (HPA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=6.0515, expected range: -6.2560 9.9704
Severely_persistent: rms_fgdepar=6.2513, expected range: 0.0000 9.2227
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 46 : all data missing
Severely_persistent: obs_number=0, expected range: 202.24 366.76
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 83 : all data missing
Severely_persistent: obs_number=0, expected range: 48.50 117.00
All HIGH RESO SEA TEMP ALL LAYERS North East Pacific : all data missing
Severely_persistent: obs_number=0, expected range: 91.11 144.56
All BUFR TEMP DESCENT ALL LAYERS North pole : all data missing
Severely_persistent: obs_number=0, expected range: 19.42 192.85
LAND TEMP TEMPERATURE (K) 35700 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=7.5016, expected range: 0.3125 2.2617
LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=4.7032, expected range: 0.7286 1.5756
All LAND TEMP ALL LAYERS WMO BLOCK 4 : all data missing
Severe: obs_number=0, expected range: 0.00 271.28
HIGH RESO LAND TEMP Q (G/KG) 56492 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=2.3653, expected range: 0.0000 1.0848
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=179.0000, expected range: 83.9289 98.0711
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 600-900 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=84.0000, expected range: 166.2501 180.1944
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 82 : all data missing
Severe: obs_number=0, expected range: 96.58 114.09
HIGH RESO SEA TEMP WIND VECTOR DIFF (M/S) KMPLHPW PRESSURE LAYER 600-9 : out of range
Severe: rms_fgdepar=18.2675, expected range: 0.0000 6.1424
Severe: avg_pge=0.8608, expected range: -0.2476 0.3217
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
Considerable: rms_fgdepar=5.5966, expected range: 0.4344 3.3945
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=365.0000, expected range: 445.0558 467.6942
Considerable: obs_number=70.0000, expected range: 93.2204 100.7796
amdar
MODE-S WIND VECTOR DIFF (M/S) M8EA950 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: avg_fgdepar=20.7665, expected range: -1.6731 5.6309
ADS-C WIND VECTOR DIFF (M/S) ZBBEATJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=28.8182, expected range: 0.0000 11.9299
ADS-C WIND VECTOR DIFF (M/S) VSCYZ5RA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.8615, expected range: 0.0000 6.5487
airep
AIREP WIND VECTOR DIFF (M/S) ETH575 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=19.5674, expected range: 0.0000 10.2301
synop
AUTOMATIC LAND SYNOP RH2M (%) 18156 : out of range
21 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9904, expected range: -0.5431 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 41244 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=686.9679, expected range: 0.0000 1067.0282
Severe: avg_pge=0.9248, expected range: -0.7217 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 17928 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=561.0187, expected range: 0.0000 1180.5093
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 89059 : out of range
Severe: rms_fgdepar=391.5517, expected range: 0.0000 197.5356
Severe: avg_pge=0.8062, expected range: -0.5579 0.7500
MANUAL LAND SYNOP RH2M (%) 67262 : out of range
Severe: rms_fgdepar=36.3859, expected range: 0.0000 15.3103
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 64210 : out of range
Severe: rms_fgdepar=443.6597, expected range: 0.0000 366.5038
Severe: avg_pge=0.8305, expected range: -0.4984 0.6513
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42618 : out of range
Severe: rms_fgdepar=387.4440, expected range: 0.0000 178.9756
Severe: avg_pge=0.8650, expected range: -0.5282 0.6325
BUFR LAND SYNOP RH2M (%) 07530 : out of range
Severe: rms_fgdepar=31.6010, expected range: 0.0000 8.4258
BUFR LAND SYNOP RH2M (%) 04162 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=-62.7228, expected range: -85.6731 100.6691
Severe: rms_fgdepar=62.7228, expected range: 0.0000 73.3868
Severe: avg_pge=0.9994, expected range: -1.4347 0.7500
BUFR LAND SYNOP RH2M (%) 15377 : out of range
Severe: rms_fgdepar=30.3800, expected range: 1.9986 14.7646
BUFR LAND SYNOP RH2M (%) 15489 : out of range
Severe: rms_fgdepar=32.2372, expected range: 0.0000 14.2205
BUFR LAND SYNOP SURFACE PRESSURE (PA) 67221 : out of range
Severe: avg_pge=0.8083, expected range: 0.7170 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 14443 : out of range
Severe: avg_fgdepar=513.7733, expected range: 391.3464 540.2671
Severe: rms_fgdepar=515.2662, expected range: 391.4896 541.7689
BUFR LAND SYNOP SURFACE PRESSURE (PA) 67586 : out of range
Severe: avg_fgdepar=644.0875, expected range: -7.1878 108.2414
Severe: rms_fgdepar=644.0875, expected range: 0.0000 108.2414
Severe: avg_pge=0.8908, expected range: 0.0000 0.0000
BUFR LAND SYNOP SURFACE PRESSURE (PA) 33517 : out of range
Severe: rms_fgdepar=504.1266, expected range: 0.0000 523.3425
ship
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) A8FG3 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=23.1254, expected range: -19.0554 33.3046
Severely_persistent: rms_fgdepar=25.4158, expected range: 0.0000 39.1157
Severely_persistent: avg_pge=0.8905, expected range: -0.9361 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) ELDMMXN : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8730, expected range: 0.3466 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V3735 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=845.3033, expected range: 38.1191 2012.4511
Severely_persistent: rms_fgdepar=845.3033, expected range: 35.7073 2015.7666
BUFR SHIP SYNOP SURFACE PRESSURE (PA) V7OJ5 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=1137.9635, expected range: 806.3286 1581.9582
Severely_persistent: rms_fgdepar=1139.0871, expected range: 810.1519 1580.6816
AUTOMATIC SHIP SURFACE PRESSURE (PA) : out of range
4 times in the last 10 days for at least one item
Severe: obs_number=184.0000, expected range: 772.9261 861.6295
BUFR SHIP SYNOP SURFACE PRESSURE (PA) TBWUK51 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=513.9100, expected range: 0.0000 870.4523
BUFR SHIP SYNOP SURFACE PRESSURE (PA) WDE9586 : out of range
Severe: rms_fgdepar=432.6740, expected range: 0.0000 246.7584
BUFR SHIP SYNOP SURFACE PRESSURE (PA) EUCDE37 : out of range
Severe: rms_fgdepar=310.8092, expected range: 0.0000 115.3344
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRHY7 : out of range
Severe: avg_pge=0.8098, expected range: -1.3813 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) KAPD : out of range
Severe: rms_fgdepar=419.5287, expected range: 0.0000 123.0821
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 3301615 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=361.5573, expected range: 0.0000 108.2572
Severe: avg_pge=0.8189, expected range: -0.0867 0.1127
DRIFTING BUOYS SURFACE PRESSURE (PA) 5401576 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=-751.9085, expected range: -1285.2700 209.1435
Severe: rms_fgdepar=753.2751, expected range: 2.9882 1185.0770
Severe: avg_pge=0.9161, expected range: 0.2911 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801707 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=482.9923, expected range: 0.0000 311.3180
Severe: avg_pge=0.8959, expected range: -0.3194 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 5601618 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=396.4809, expected range: 0.0000 76.8586
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701618 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=-635.6367, expected range: -1147.3328 989.6787
Severe: rms_fgdepar=635.6367, expected range: 0.0000 661.4720
Severe: avg_pge=0.9106, expected range: -0.4824 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 5501658 : out of range
Severe: rms_fgdepar=311.5408, expected range: 0.0000 159.0241
snow
MANUAL LAND SYNOP SNOW (CM) 87803 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-67.7167, expected range: -71.3391 -44.5969
Severely_persistent: rms_fgdepar=67.7167, expected range: 44.5969 71.3391
BUFR LAND SYNOP SNOW (CM) 87803 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-67.7167, expected range: -71.3391 -44.5969
Severely_persistent: rms_fgdepar=67.7167, expected range: 44.5969 71.3391
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=-772.7459, expected range: -773.0769 -772.3687
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=772.7460, expected range: 772.3689 773.0769
t2m
METAR 2M TEMPERATURE (K) UGMS : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=14.0183, expected range: 8.1820 15.2652
Severely_persistent: rms_fgdepar=14.0272, expected range: 8.3185 15.3166
MANUAL LAND SYNOP 2M TEMPERATURE (K) 67012 : out of range
Severe: rms_fgdepar=10.0805, expected range: 0.6748 4.7159
MANUAL LAND SYNOP 2M TEMPERATURE (K) 35927 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.5372, expected range: 0.0000 4.0891
METAR 2M TEMPERATURE (K) KSGJ : out of range
Severe: avg_fgdepar=-14.9403, expected range: -1.3218 3.8563
Severe: rms_fgdepar=14.9403, expected range: 0.0734 3.6919
BUFR LAND SYNOP 2M TEMPERATURE (K) 80261 : out of range
Severe: avg_fgdepar=12.0931, expected range: 9.3533 10.8643
Severe: rms_fgdepar=12.0970, expected range: 9.3792 10.9212
BUFR LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
Severe: avg_fgdepar=13.2033, expected range: -0.5777 15.8092
Severe: rms_fgdepar=13.3729, expected range: 0.0000 15.8002
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=-19.6405, expected range: -22.4661 -12.7196
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=19.6405, expected range: 12.7420 22.4689
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=102.0000, expected range: 7.5005 28.5995
rh2m
AUTOMATIC LAND SYNOP RH2M (%) 07149 : out of range
Severe: rms_fgdepar=37.2832, expected range: 0.0000 13.5027
METAR RH2M (%) KBLI : out of range
Severe: rms_fgdepar=36.1716, expected range: 0.0000 20.2411
All BUFR LAND SYNOP WMO BLOCK 66 : all data missing
Severe: obs_number=0, expected range: 6.15 325.49