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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-08-09 00:00

amsua
NOAA-19/AMSUA RADIANCES (7 channels affected) : out of range
Considerable: obs_number=6522.0000, expected range: 6929.2525 8044.3031
iasi
METOP-A/IASI RADIANCES (221 channels affected) : out of range
Slight: obs_number=13201.0000, expected range: 14267.2072 24364.3483
METOP-A/IASI RADIANCES (54 channels affected) : out of range
Slight: avg_fgdepar=0.0450, expected range: -0.0051 0.0402
METOP-A/IASI RADIANCES CHANNEL 1513 : out of range
Slight: stdev_fgdepar=0.4574, expected range: 0.3540 0.4454
METOP-A/IASI RADIANCES CHANNEL 1658 : out of range
Slight: stdev_fgdepar=0.5072, expected range: 0.3632 0.4846
cris
NPP/CRIS RADIANCES (297 channels affected) : out of range
Severe: avg_biascorr=0.1534, expected range: 0.2304 0.2755
NPP/CRIS RADIANCES CHANNEL 717 : out of range
Severe: obs_number=13834.0000, expected range: 1830.1179 5095.9916
NPP/CRIS RADIANCES CHANNEL 853 : out of range
Severe: obs_number=18796.0000, expected range: 2582.6299 9484.0300
NPP/CRIS RADIANCES CHANNEL 929 : out of range
Severe: obs_number=15297.0000, expected range: 4330.8522 11681.5800
NPP/CRIS RADIANCES CHANNEL 978 : out of range
Severe: obs_number=37797.0000, expected range: 12660.0970 18371.1699
NPP/CRIS RADIANCES CHANNEL 1029 : out of range
Severe: obs_number=22962.0000, expected range: 4370.7422 11679.3230
NPP/CRIS RADIANCES CHANNEL 1053 : out of range
Severe: obs_number=29175.0000, expected range: 6991.8975 14097.7542
NPP/CRIS RADIANCES CHANNEL 1061 : out of range
Severe: obs_number=24037.0000, expected range: 6588.4872 13701.3578
NPP/CRIS RADIANCES (61 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: stdev_fgdepar=3.2456, expected range: 0.1915 0.2784
NPP/CRIS RADIANCES CHANNEL 757 : out of range
Considerable: obs_number=7096.0000, expected range: 1865.7571 5483.3971
NPP/CRIS RADIANCES CHANNEL 915 : out of range
Considerable: obs_number=17505.0000, expected range: 5209.2207 12394.2856
NPP/CRIS RADIANCES CHANNEL 941 : out of range
Considerable: obs_number=15610.0000, expected range: 5779.2810 12990.2879
NPP/CRIS RADIANCES (24 channels affected) : out of range
Slight: avg_fgdepar=0.2282, expected range: -0.1390 0.0675
mhs
ALLSKY NOAA-19/MHS RADIANCES CHANNEL 3 : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=13036.0000, expected range: 13976.1152 15787.7181
ALLSKY NOAA-19/MHS RADIANCES CHANNEL 4 : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=14281.0000, expected range: 15058.8453 17159.9325
ssmis
DMSP-18/SSMIS RADIANCES CHANNEL 6 : out of range
Considerable: obs_number=1612.0000, expected range: 409.2294 1351.7935
DMSP-18/SSMIS RADIANCES CHANNEL 7 : out of range
Considerable: obs_number=1614.0000, expected range: 414.4564 1322.8126
DMSP-18/SSMIS RADIANCES CHANNEL 10 : out of range
Considerable: obs_number=1592.0000, expected range: 403.8496 1340.3012
DMSP-18/SSMIS RADIANCES CHANNEL 11 : out of range
Considerable: obs_number=1593.0000, expected range: 403.8916 1297.8109
Atmospheric Motion Vector
HIMAWARI-8 AMV VIS1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 900-1200 (HP : out of range
Considerable: stdev_fgdepar=1.1810, expected range: 0.8918 1.1012
Radiosondes
LAND TEMP TEMPERATURE (K) 30372 PRESSURE LAYER 900-1200 (HPA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8743, expected range: -1.2220 0.7500
LAND TEMP TEMPERATURE (K) 97900 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=27.3151, expected range: 0.1081 2.9072
Severe: avg_pge=0.8954, expected range: -0.0533 0.1492
LAND TEMP TEMPERATURE (K) 96011 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=8.9512, expected range: 0.1588 3.3631
LAND TEMP TEMPERATURE (K) 42634 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=12.2383, expected range: 0.0000 5.4163
LAND TEMP TEMPERATURE (K) 25123 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=7.9178, expected range: 0.0000 2.7092
LAND TEMP TEMPERATURE (K) 31977 PRESSURE LAYER 600-900 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.2449, expected range: 0.0000 3.0555
LAND TEMP WIND VECTOR DIFF (M/S) 97900 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=22.0310, expected range: 0.8466 7.1308
LAND TEMP WIND VECTOR DIFF (M/S) 27459 PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=21.5307, expected range: 0.0000 8.6760
Severe: avg_pge=0.9263, expected range: -1.0674 0.7500
LAND TEMP Q (G/KG) 56691 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=2.8893, expected range: 0.0000 1.5267
LAND TEMP Q (G/KG) 98433 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=3.0223, expected range: 0.0000 1.5651
LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
Considerable: obs_number=609.0000, expected range: 206.1578 471.8422
HIGH RESO LAND TEMP TEMPERATURE (K) (4 pressure layers affected) : out of range
3 times in the last 10 days for at least one item
Considerable: obs_number=270.0000, expected range: 322.4593 468.3642
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (4 pressure layers affected : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=270.0000, expected range: 322.4593 468.3642
amdar
WIGOS AMDAR WIND VECTOR DIFF (M/S) SMGYTNRA PRESSURE LAYER 600-900 (HP : out of range
Severe: rms_fgdepar=19.2389, expected range: 0.0000 8.6580
Severe: avg_pge=0.8682, expected range: -0.8337 0.7500
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
Slight: avg_fgdepar=4.5902, expected range: 2.0333 4.2752
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 97260 PRESSURE LAYER 900-1200 (HPA) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8394, expected range: 0.5704 0.7500
synop
AUTOMATIC LAND SYNOP RH2M (%) 35167 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8606, expected range: -0.3651 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43021 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8296, expected range: -1.3762 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43133 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9278, expected range: 0.3131 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42705 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8644, expected range: -0.6035 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42408 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8747, expected range: -1.1716 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42969 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9132, expected range: -1.6015 0.7500
BUFR LAND SYNOP RH2M (%) 81843 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9601, expected range: -1.6613 0.7500
MANUAL LAND SYNOP RH2M (%) 65357 : out of range
Severe: rms_fgdepar=43.1800, expected range: 0.0000 10.4981
Severe: avg_pge=0.9997, expected range: 0.0019 0.0034
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42900 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9029, expected range: -1.1108 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83942 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8350, expected range: -1.6759 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40782 : out of range
Severe: rms_fgdepar=349.2175, expected range: 0.0000 138.7562
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 80214 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8019, expected range: 0.4914 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42915 : out of range
Severe: rms_fgdepar=344.2460, expected range: 0.0000 310.9634
Severe: avg_pge=0.8239, expected range: -1.2753 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42925 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=469.8677, expected range: 0.0000 293.2360
Severe: avg_pge=0.8797, expected range: -1.0385 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 78706 : out of range
Severe: avg_pge=0.8117, expected range: -0.3437 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86128 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8587, expected range: -1.0660 0.7500
BUFR LAND SYNOP RH2M (%) 71730 : out of range
Severe: rms_fgdepar=26.7952, expected range: 0.0000 14.7870
BUFR LAND SYNOP RH2M (%) 72562 : out of range
Severe: avg_pge=0.9327, expected range: -0.5890 0.6806
BUFR LAND SYNOP RH2M (%) 71733 : out of range
Severe: rms_fgdepar=28.1591, expected range: 0.0000 15.4351
BUFR LAND SYNOP RH2M (%) 72363 : out of range
Severe: rms_fgdepar=30.1588, expected range: 0.0000 10.0059
BUFR LAND SYNOP RH2M (%) 94318 : out of range
Severe: avg_pge=0.9331, expected range: -1.8853 0.7500
BUFR LAND SYNOP RH2M (%) 71509 : out of range
Severe: avg_pge=0.9935, expected range: -0.1145 0.1589
BUFR LAND SYNOP SURFACE PRESSURE (PA) 26381 : out of range
Severe: rms_fgdepar=306.1494, expected range: 0.0000 78.4818
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30636 : out of range
Severe: rms_fgdepar=356.0206, expected range: 0.0000 192.3981
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94866 : out of range
Severe: rms_fgdepar=397.3932, expected range: 0.0000 117.9548
BUFR LAND SYNOP SURFACE PRESSURE (PA) 16197 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=351.8166, expected range: 0.0000 273.0025
Severe: avg_pge=0.8444, expected range: -0.5714 0.7500
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) VWSK : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8188, expected range: -1.0170 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) 8TAP : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8097, expected range: -1.2416 0.7500
SHIP WIND VECTOR DIFF (M/S) WDC6055 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8992, expected range: -0.2689 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8865, expected range: 0.1420 0.7500
SHIP SURFACE PRESSURE (PA) 9HXC9 : out of range
Severe: rms_fgdepar=905.5857, expected range: 0.0000 178.8941
Severe: avg_pge=0.9283, expected range: -0.3304 0.4191
SHIP SURFACE PRESSURE (PA) WPAJ : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8236, expected range: -0.8685 0.7500
SHIP WIND VECTOR DIFF (M/S) 3FMV6 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=25.7734, expected range: 0.0000 14.1433
Severe: avg_pge=0.9452, expected range: -0.9631 0.7500
buoy
MOORED BUOYS WIND VECTOR DIFF (M/S) 1500001 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8039, expected range: 0.3736 0.7500
MOORED BUOYS WIND VECTOR DIFF (M/S) 3100231 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8370, expected range: 0.4129 0.7500
MOORED BUOYS WIND VECTOR DIFF (M/S) 5300056 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9182, expected range: 0.7351 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2201558 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8666, expected range: -1.3057 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2301719 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8667, expected range: 0.1676 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1601579 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8135, expected range: 0.0028 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6203705 : out of range
Severe: avg_pge=0.8660, expected range: -0.9394 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 5301506 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=466.5658, expected range: 0.0000 143.1640
Severe: avg_pge=0.8394, expected range: -0.5599 0.6592
DRIFTING BUOYS SURFACE PRESSURE (PA) 3101546 : out of range
Severe: avg_pge=0.8015, expected range: -0.6986 0.7500
metar
METAR SURFACE PRESSURE (PA) SBIL : out of range
Severe: rms_fgdepar=320.9639, expected range: 0.0000 143.4400
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8305, expected range: 0.7429 0.8980
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8285, expected range: 0.7550 0.8998
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=114.0000, expected range: 99.8269 103.9626
MANUAL LAND SYNOP 2M TEMPERATURE (K) 65357 : out of range
Severe: rms_fgdepar=8.4092, expected range: 0.0000 4.5387
MANUAL LAND SYNOP 2M TEMPERATURE (K) 21978 : out of range
Severe: rms_fgdepar=9.7232, expected range: 0.0000 5.2096
METAR 2M TEMPERATURE (K) MMHO : out of range
Severe: rms_fgdepar=8.5359, expected range: 0.4540 4.1126
METAR 2M TEMPERATURE (K) UWUU : out of range
Severe: rms_fgdepar=8.7803, expected range: 0.3636 3.2027
rh2m
AUTOMATIC LAND SYNOP RH2M (%) 95296 : out of range
Severe: rms_fgdepar=29.2212, expected range: 0.0000 16.5271
BUFR LAND SYNOP RH2M (%) : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=100.0000, expected range: 86.3111 93.1625
AUTOMATIC LAND SYNOP RH2M (%) : out of range
3 times in the last 10 days for at least one item
Considerable: obs_number=94.0000, expected range: 79.5491 88.3983