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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2021-11-21 12:00

amsua
NOAA 18 AMSUA ALL SKY RADIANCES CHANNEL 14 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6631, expected range: 0.5143 0.5821
METOP-C AMSUA ALL SKY RADIANCES CHANNEL 14 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6256, expected range: 0.4731 0.5438
airs
AQUA AIRS RADIANCES CHANNEL 139 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0336, expected range: -0.0734 -0.0539
AQUA AIRS RADIANCES CHANNEL 144 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1302, expected range: -0.1894 -0.1622
AQUA AIRS RADIANCES CHANNEL 227 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0405, expected range: 0.0045 0.0244
AQUA AIRS RADIANCES CHANNEL 587 : out of range
1 times in the last 10 days for at least one item
Considerable: avg_biascorr=-0.0702, expected range: -0.0662 -0.0594
atms
NPP ATMS RADIANCES CHANNEL 13 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0596, expected range: -0.3195 -0.2593
NPP ATMS RADIANCES CHANNEL 14 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0253, expected range: -0.1671 -0.0734
NPP ATMS RADIANCES CHANNEL 12 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1481, expected range: -0.3693 -0.2905
NPP ATMS RADIANCES CHANNEL 15 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.8879, expected range: 0.6289 0.7315
Severely_persistent: stdev_fgdepar=0.8511, expected range: 0.5847 0.7198
NOAA20 ATMS RADIANCES CHANNEL 13 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4800, expected range: -0.4481 -0.4162
Severely_persistent: avg_biascorr=-0.1712, expected range: -0.4445 -0.3590
NOAA20 ATMS RADIANCES CHANNEL 12 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1337, expected range: -0.3836 -0.2431
NOAA20 ATMS RADIANCES CHANNEL 14 : out of range
1 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.4466, expected range: 0.3489 0.3991
Severely_persistent: stdev_fgdepar=0.4362, expected range: 0.3148 0.3819
Considerable: avg_biascorr=-0.0607, expected range: -0.2255 -0.1301
NOAA20 ATMS RADIANCES CHANNEL 15 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.8529, expected range: 0.5643 0.6636
Severely_persistent: stdev_fgdepar=0.8340, expected range: 0.5058 0.6480
NOAA20 ATMS RADIANCES CHANNEL 11 : out of range
4 times in the last 10 days for at least one item
Considerable: avg_biascorr=-0.3649, expected range: -0.5941 -0.4416
ssmis
DMSP-17 SSMIS RADIANCES CHANNEL 5 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0042, expected range: 0.0033 0.0037
Atmospheric Motion Vector
GOES-16 AMV IR1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Considerable: obs_number=2771.0000, expected range: 125.0476 1872.8646
resat
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 100-101 (HPA) : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0034, expected range: 0.0128 0.0302
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 1-2 (HPA) : out of range
15 times in the last 10 days for at least one item
Slight: stdev_fgdepar=0.0266, expected range: 0.0113 0.0113
Radiosondes
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 30 : all data missing
Severely_persistent: obs_number=0, expected range: 10.79 314.24
LAND TEMP Q (G/KG) 91413 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=2.6236, expected range: 0.3133 1.6296
LAND TEMP Q (G/KG) 82411 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=4.0479, expected range: 0.0000 1.6393
LAND TEMP TEMPERATURE (K) 32389 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=6.2043, expected range: 0.8119 2.9359
LAND TEMP WIND VECTOR DIFF (M/S) 34882 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_fgdepar=36.3355, expected range: -6.7234 13.2298
Severe: rms_fgdepar=37.5076, expected range: 0.0000 14.0089
Severe: avg_pge=0.9193, expected range: -1.2602 0.7500
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=283.0000, expected range: 359.6631 386.0869
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=90.0000, expected range: 170.9805 193.0195
amdar
ADS-C WIND VECTOR DIFF (M/S) 01CBZMBA PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=22.7389, expected range: 0.0000 11.7378
ADS-C WIND VECTOR DIFF (M/S) XYJYJ5JA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=20.2629, expected range: 0.0000 12.5220
ADS-C WIND VECTOR DIFF (M/S) J1QUOUJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=23.8769, expected range: 0.0000 10.7182
ADS-C WIND VECTOR DIFF (M/S) YUEIMERA PRESSURE LAYER 0-300 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=26.3839, expected range: 0.0000 14.1718
ADS-C WIND VECTOR DIFF (M/S) X0JBEXZA PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=29.5153, expected range: -31.4366 43.6687
airep
AIREP WIND VECTOR DIFF (M/S) UAL900 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=26.2007, expected range: 0.0000 26.7336
AIREP WIND VECTOR DIFF (M/S) UAL951 PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=20.6531, expected range: 0.0000 44.7054
AIREP WIND VECTOR DIFF (M/S) BAW31F PRESSURE LAYER 0-300 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=30.9446, expected range: 0.0000 49.7750
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 71994 (2 pressure layers affe : out of range
Severe: avg_fgdepar=26.1175, expected range: -8.9296 20.3597
Severe: rms_fgdepar=26.1175, expected range: 0.0000 23.3983
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 71994 PRESSURE LAYER 0-300 (H : out of range
Severe: avg_pge=0.8860, expected range: -0.8249 0.7500
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 41624 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_pge=0.8496, expected range: 0.2250 0.7500
All BUFR LAND PILOT ALL LAYERS North West Pacific : all data missing
Severe: obs_number=0, expected range: 26.89 185.48
synop
BUFR LAND SYNOP SURFACE PRESSURE (PA) 31561 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-904.3622, expected range: -1531.5855 1291.1995
Severely_persistent: rms_fgdepar=904.3622, expected range: -1079.2227 1486.1847
Severely_persistent: avg_pge=0.9400, expected range: -1.6522 0.7500
MANUAL LAND SYNOP Z (M) 43356 : out of range
Severe: avg_pge=0.8742, expected range: -0.0701 0.0934
MANUAL LAND SYNOP RH2M (%) 60210 : out of range
Severe: rms_fgdepar=35.0072, expected range: 0.0000 17.5139
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 67197 : out of range
Severe: avg_fgdepar=759.5527, expected range: -156.7686 138.1385
Severe: rms_fgdepar=759.5527, expected range: 0.0000 186.4475
Severe: avg_pge=0.9214, expected range: -0.3466 0.4033
BUFR LAND SYNOP Z (M) 56172 : out of range
Severe: avg_pge=0.9909, expected range: -0.4854 0.6012
BUFR LAND SYNOP RH2M (%) 01440 : out of range
Severe: rms_fgdepar=37.2341, expected range: 0.0000 11.3575
Severe: rms_fgdepar=31.0881, expected range: 0.0000 9.2660
BUFR LAND SYNOP RH2M (%) 11231 : out of range
Severe: rms_fgdepar=30.8813, expected range: 0.0000 16.3916
BUFR LAND SYNOP RH2M (%) 40356 : out of range
Severe: rms_fgdepar=35.1037, expected range: 0.0000 19.2905
MANUAL LAND SYNOP RH2M (%) : out of range
Considerable: obs_number=77.0000, expected range: 93.7999 117.3112
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) SJA4RSK : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8022, expected range: -1.8537 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V9409 : out of range
Severe: avg_pge=0.8271, expected range: -0.9938 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 6203607 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8555, expected range: -1.6291 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4101702 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8116, expected range: -0.8609 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2101662 : out of range
Severe: rms_fgdepar=377.1351, expected range: 0.0000 204.4366
DRIFTING BUOYS SURFACE PRESSURE (PA) 4402509 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8476, expected range: -1.4395 0.7500
metar
METAR SURFACE PRESSURE (PA) MMMV : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-608.6269, expected range: -989.7208 1060.1900
Severely_persistent: rms_fgdepar=609.0298, expected range: -768.0903 992.6511
Severely_persistent: avg_pge=0.8301, expected range: -1.3567 0.7500
METAR SURFACE PRESSURE (PA) DNMK : out of range
Severe: rms_fgdepar=379.9947, expected range: 0.0000 167.7426
METAR SURFACE PRESSURE (PA) SCFM : out of range
Severe: rms_fgdepar=451.0669, expected range: 0.0000 173.5116
METAR SURFACE PRESSURE (PA) SKGP : out of range
Severe: rms_fgdepar=370.5016, expected range: 0.0000 200.1200
snow
BUFR LAND SYNOP SNOW (CM) _MI1BD27 : out of range
24 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-55.6043, expected range: -88.9962 -13.8997
BUFR LAND SYNOP SNOW (CM) _MI1BD27 : out of range
24 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=55.6163, expected range: 13.9493 89.0494
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
21 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-12.2745, expected range: -20.9879 -1.4862
Severely_persistent: rms_fgdepar=12.3654, expected range: 1.8606 20.9854
BUFR LAND SYNOP 2M TEMPERATURE (K) 04112 : out of range
32 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=12.1640, expected range: 11.4376 17.9085
BUFR LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-12.4632, expected range: -21.0183 -1.5968
Severely_persistent: rms_fgdepar=12.5528, expected range: 1.9640 21.0184
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 68546 : out of range
Severe: rms_fgdepar=11.3061, expected range: 0.0000 3.7108
MANUAL LAND SYNOP 2M TEMPERATURE (K) 70194 : out of range
Severe: avg_fgdepar=-14.8961, expected range: -9.2121 5.4756
Severe: rms_fgdepar=14.8961, expected range: 0.0000 8.6757
MANUAL LAND SYNOP 2M TEMPERATURE (K) 36546 : out of range
Severe: rms_fgdepar=11.7250, expected range: 0.0000 4.9041
MANUAL LAND SYNOP 2M TEMPERATURE (K) 36796 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=-19.6670, expected range: -15.9590 9.2430
Severe: rms_fgdepar=19.6670, expected range: 0.0000 15.2326
Severe: avg_est_pge=0.8070, expected range: -0.4940 0.8995
MANUAL LAND SYNOP 2M TEMPERATURE (K) 25147 : out of range
Severe: rms_fgdepar=11.8809, expected range: 0.0000 6.6667
MANUAL LAND SYNOP 2M TEMPERATURE (K) 36639 : out of range
Severe: rms_fgdepar=12.0524, expected range: 0.0000 8.0478
METAR 2M TEMPERATURE (K) PFYU : out of range
Severe: avg_fgdepar=-14.4961, expected range: -8.7101 4.9186
Severe: rms_fgdepar=14.5292, expected range: 0.0000 7.7608
BUFR LAND SYNOP 2M TEMPERATURE (K) 68443 : out of range
Severe: avg_fgdepar=-13.8720, expected range: -8.1929 6.5255
Severe: rms_fgdepar=13.8720, expected range: 0.0000 6.2894
BUFR LAND SYNOP 2M TEMPERATURE (K) 36796 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=-19.7170, expected range: -16.0090 9.1930
Severe: rms_fgdepar=19.7170, expected range: 0.0000 15.3332