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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2020-01-17 12:00

airs
AQUA AIRS RADIANCES CHANNEL 1794 : missing
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=0.0000, expected range: 3529.9597 15529.2427
mwhs2
FY-3D MWHS2 ALLSKY RADIANCES (5 channels affected) : out of range
Considerable: stdev_norm_fgdepar=0.5799, expected range: 0.6117 0.7057
FY-3D MWHS2 ALLSKY RADIANCES CHANNEL 8 : out of range
Slight: obs_number=25026.0000, expected range: 26294.1223 29356.2527
FY-3D MWHS2 ALLSKY RADIANCES CHANNEL 9 : out of range
Slight: obs_number=24977.0000, expected range: 26277.9515 29336.7985
FY-3D MWHS2 ALLSKY RADIANCES CHANNEL 10 : out of range
Slight: obs_number=25021.0000, expected range: 26284.2516 29393.6234
ssmis
DMSP-18 SSMIS RADIANCES CHANNEL 11 : out of range
1 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.6520, expected range: 0.6617 0.7433
Atmospheric Motion Vector
METEOSAT-8 AMV CLOUDY WV2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-60 : out of range
3 times in the last 10 days for at least one item
Considerable: avg_press=449.8480, expected range: 386.8814 429.2812
Radiosondes
LAND TEMP TEMPERATURE (K) 30758 PRESSURE LAYER 900-1200 (HPA) : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8804, expected range: -0.2939 0.7500
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 67 : all data missing
Severely_persistent: obs_number=0, expected range: 33.61 172.79
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 84 : all data missing
Severely_persistent: obs_number=0, expected range: 120.52 133.81
LAND TEMP TEMPERATURE (K) 38341 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=6.0909, expected range: 0.8839 3.2164
LAND TEMP TEMPERATURE (K) 74004 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=6.1948, expected range: 0.5639 2.6534
LAND TEMP TEMPERATURE (K) 82244 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=20.5983, expected range: 0.7765 2.7296
Severe: avg_pge=0.9356, expected range: -0.1384 0.2928
LAND TEMP TEMPERATURE (K) 25428 PRESSURE LAYER 300-600 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8124, expected range: -0.6955 0.7500
LAND TEMP TEMPERATURE (K) 56778 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=6.9817, expected range: 0.0414 2.1432
LAND TEMP WIND VECTOR DIFF (M/S) 38341 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.7738, expected range: 0.0000 10.8514
Severe: avg_pge=0.8140, expected range: -0.4552 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 36003 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=20.8714, expected range: 0.0000 11.4942
LAND TEMP WIND VECTOR DIFF (M/S) 25428 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=21.1527, expected range: 0.0000 4.7672
Severe: avg_pge=0.8867, expected range: -0.4722 0.7415
LAND TEMP Q (G/KG) 43599 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=3.0248, expected range: 0.2158 1.6492
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : missing
1 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 0.0000 268.4463
HIGH RESO LAND TEMP Q (G/KG) 85442 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=2.6910, expected range: 0.6084 1.7101
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=473.0000, expected range: 524.6548 535.3452
HIGH RESO LAND TEMP Q (G/KG) (4 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=262.0000, expected range: 192.7024 201.0476
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 26 : all data missing
Severe: obs_number=0, expected range: 45.70 143.80
All HIGH RESO LAND TEMP ALL LAYERS Indian Ocean Tropica : all data missing
Severe: obs_number=0, expected range: 24.51 220.29
All HIGH RESO SEA TEMP ALL LAYERS North East Pacific : all data missing
Severe: obs_number=0, expected range: 267.50 326.22
LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Considerable: rms_fgdepar=11.2796, expected range: 0.8369 6.9077
amdar
AMDAR WIND VECTOR DIFF (M/S) ANZ126 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.8974, expected range: 0.0000 7.4465
AMDAR WIND VECTOR DIFF (M/S) AU0118 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=15.3877, expected range: 0.0000 7.4515
WIGOS AMDAR TEMPERATURE (K) C53GUWBA PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=7.1461, expected range: 0.0000 3.9610
WIGOS AMDAR WIND VECTOR DIFF (M/S) OBNWPSBA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8638, expected range: -0.4088 0.6877
WIGOS AMDAR WIND VECTOR DIFF (M/S) JEZ0RUJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8416, expected range: -0.6954 0.7500
WIGOS AMDAR WIND VECTOR DIFF (M/S) AU0118 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=15.2542, expected range: 0.0000 7.5288
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 07626 PRESSURE LAYER 300-600 : out of range
Severe: rms_fgdepar=15.3036, expected range: 0.5281 5.3795
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 01206 PRESSURE LAYER 600-900 : out of range
Severe: avg_pge=0.8675, expected range: -0.5466 0.7500
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 42542 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_pge=0.8532, expected range: -0.5159 0.7500
synop
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71021 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8261, expected range: -0.5227 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71648 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9052, expected range: -1.4422 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24588 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8035, expected range: 0.0794 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 89648 : out of range
Severe: rms_fgdepar=326.7491, expected range: 0.0000 84.9692
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=89.0000, expected range: 96.3631 106.0813
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 38001 : out of range
Severe: rms_fgdepar=349.8033, expected range: 0.0000 71.3175
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 37801 : out of range
Severe: rms_fgdepar=451.0019, expected range: 0.0000 356.6803
Severe: avg_pge=0.8080, expected range: -1.1621 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76113 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8296, expected range: -0.7931 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40633 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=329.2869, expected range: 0.0000 90.9602
MANUAL LAND SYNOP RH2M (%) 42748 : out of range
Severe: rms_fgdepar=40.8496, expected range: 0.0000 13.9318
Severe: avg_pge=0.9180, expected range: 0.0008 0.0051
MANUAL LAND SYNOP RH2M (%) 83249 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8093, expected range: -1.2789 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 28766 : out of range
Severe: rms_fgdepar=349.3581, expected range: 0.0000 148.0706
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71966 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8235, expected range: -0.7610 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 28676 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=491.0113, expected range: 0.0000 150.5550
BUFR LAND SYNOP SURFACE PRESSURE (PA) 60158 : out of range
Severe: rms_fgdepar=543.9848, expected range: 7.7907 50.8644
BUFR LAND SYNOP RH2M (%) 94450 : out of range
Severe: rms_fgdepar=40.6813, expected range: 0.0000 16.6506
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
Considerable: obs_number=104.0000, expected range: 110.7591 122.0980
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V7987 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9243, expected range: 0.5404 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 3EST3 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8952, expected range: 0.3357 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 9V6386 : out of range
Severe: rms_fgdepar=27.4580, expected range: 0.0000 6.6289
Severe: avg_pge=0.9328, expected range: -0.7446 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) DSQF9 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9321, expected range: 0.3281 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) WECH : out of range
Severe: rms_fgdepar=28.8368, expected range: 0.0000 15.2813
Severe: avg_pge=0.9380, expected range: -0.7431 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 2GNG3 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8580, expected range: 0.5849 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) TBWUK35 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8660, expected range: -0.8257 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRBJ5 : out of range
Severe: rms_fgdepar=973.1852, expected range: 181.3124 676.5575
Severe: avg_pge=0.8931, expected range: 0.5437 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) LAIG7 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8212, expected range: 0.1130 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRKX8 : out of range
Severe: avg_pge=0.8015, expected range: 0.4839 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) TBWUK79 : out of range
Severe: rms_fgdepar=581.0271, expected range: 0.0000 372.9005
Severe: avg_pge=0.8603, expected range: -1.3565 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VXKF : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8173, expected range: -1.4793 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) KFMV : out of range
Severe: rms_fgdepar=873.1439, expected range: 0.0000 90.6436
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 7401507 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8729, expected range: -0.6636 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 3101601 : out of range
Severe: rms_fgdepar=303.4010, expected range: 0.0000 62.1593
DRIFTING BUOYS SURFACE PRESSURE (PA) 2501663 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9103, expected range: -0.4728 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4101754 : out of range
Severe: rms_fgdepar=323.4176, expected range: 0.0000 68.8508
DRIFTING BUOYS SURFACE PRESSURE (PA) 6401799 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8434, expected range: -0.3898 0.4997
metar
METAR SURFACE PRESSURE (PA) SBCF : out of range
Severe: rms_fgdepar=300.1606, expected range: 0.0000 116.4511
METAR SURFACE PRESSURE (PA) KFDK : out of range
Severe: rms_fgdepar=379.6234, expected range: 0.0000 121.5246
METAR SURFACE PRESSURE (PA) SBFL : out of range
Severe: rms_fgdepar=495.1665, expected range: 0.0000 224.8647
snow
AUTOMATIC LAND SYNOP SNOW (CM) 71350 : out of range
Severe: rms_fgdepar=33.2348, expected range: 0.6120 5.0569
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71001 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8323, expected range: -0.0890 1.3180
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71195 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8393, expected range: -0.0890 1.3287
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24076 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8144, expected range: 0.6328 0.9127
LAND TEMP 2M TEMPERATURE (K) 30372 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8156, expected range: 0.5068 1.0910
LAND TEMP 2M TEMPERATURE (K) 56137 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8707, expected range: -0.2635 1.5226
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02890 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=12.3731, expected range: 0.0000 6.5320
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89734 : out of range
Severe: avg_est_pge=0.8231, expected range: 0.3275 1.0177
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02815 : out of range
Severe: rms_fgdepar=10.8309, expected range: 0.0000 4.5523
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02825 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.2375, expected range: 0.0000 4.4118
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02745 : out of range
Severe: rms_fgdepar=12.1946, expected range: 0.0000 4.4666
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02836 : out of range
Severe: rms_fgdepar=11.3966, expected range: 0.0000 3.6102
MANUAL LAND SYNOP 2M TEMPERATURE (K) 44213 : out of range
Severe: rms_fgdepar=13.5189, expected range: 2.9782 7.6651
Severe: avg_est_pge=0.8257, expected range: 0.3210 0.7752
MANUAL LAND SYNOP 2M TEMPERATURE (K) 40945 : out of range
Severe: avg_est_pge=0.8081, expected range: -0.2856 1.1553
MANUAL LAND SYNOP 2M TEMPERATURE (K) 01057 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=11.6937, expected range: 0.0000 6.6409
MANUAL LAND SYNOP 2M TEMPERATURE (K) 44218 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=12.6366, expected range: 4.6577 9.6375
Severe: avg_est_pge=0.8240, expected range: 0.5781 0.7924
METAR 2M TEMPERATURE (K) KPVD : out of range
Severe: rms_fgdepar=16.7752, expected range: 0.0000 4.7587
METAR 2M TEMPERATURE (K) UNEE : out of range
Severe: rms_fgdepar=12.4288, expected range: 0.0000 4.8412
METAR 2M TEMPERATURE (K) UNTT : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.1676, expected range: 0.0000 4.3445
LAND TEMP 2M TEMPERATURE (K) 70326 : out of range
Severe: avg_est_pge=0.8423, expected range: -0.6068 1.0077
BUFR LAND SYNOP 2M TEMPERATURE (K) 02890 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=12.4777, expected range: 0.0000 6.6192
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=141.0000, expected range: 166.6456 171.7755
Severe: obs_number=87.0000, expected range: 94.5534 102.3939
rh2m
BUFR LAND SYNOP RH2M (%) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=261.0000, expected range: 329.6899 408.8101