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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-11-05 12:00

amsua
NOAA-18/AMSUA RADIANCES CHANNEL 14 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.0542, expected range: 0.6516 0.8937
METOP-B/AMSUA RADIANCES CHANNEL 14 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.0010, expected range: 0.6634 0.8844
METOP-C/AMSUA RADIANCES CHANNEL 14 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.9837, expected range: 0.6036 0.8489
airs
AQUA/AIRS RADIANCES CHANNEL 375 : missing
1 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 2665.1086 6855.4208
gpsro
METOP-B/GRAS SETTING HEIGHT 20 : out of range
Slight: avg_norm_fgdepar=0.2678, expected range: -0.0148 0.2329
Atmospheric Motion Vector
HIMAWARI-8 AMV IR1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
3 times in the last 10 days for at least one item
Considerable: avg_fgdepar=3.8926, expected range: 3.1368 3.7223
HIMAWARI-8 AMV IR1 WIND VECTOR DIFF (M/S) (2 pressure layers affected) : out of range
Slight: stdev_fgdepar=2.3228, expected range: 1.7702 2.2369
Radiosondes
LAND TEMP TEMPERATURE (K) 30372 PRESSURE LAYER 900-1200 (HPA) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9139, expected range: -1.2903 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=258.0000, expected range: 93.6677 169.9990
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 0-300 (HPA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.0292, expected range: -0.0066 0.0062
Severely_persistent: rms_fgdepar=0.0403, expected range: 0.0000 0.0089
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=191.0000, expected range: 69.7338 114.0440
LAND TEMP WIND VECTOR DIFF (M/S) 30309 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.2091, expected range: 0.0000 8.5485
LAND TEMP TEMPERATURE (K) 23955 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=10.3263, expected range: 0.0000 7.6075
Severe: avg_pge=0.9201, expected range: -0.8445 0.7500
HIGH RESO SEA TEMP WIND VECTOR DIFF (M/S) (4 pressure layers affected) : out of range
Severe: obs_number=141.0000, expected range: 241.2587 345.4079
HIGH RESO SEA TEMP Q (G/KG) (4 pressure layers affected) : out of range
Severe: obs_number=67.0000, expected range: 127.1182 138.4608
amdar
WIGOS AMDAR Q (G/KG) BWWUOGBA PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9935, expected range: -1.0094 0.7500
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 47822 PRESSURE LAYER 600-900 : out of range
Severe: rms_fgdepar=15.3414, expected range: 0.0000 10.6242
Severe: avg_pge=0.8548, expected range: -0.6651 0.7500
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 48810 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8412, expected range: -0.0355 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42420 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=588.0167, expected range: 0.0000 527.3707
Severely_persistent: avg_pge=0.9170, expected range: -0.2435 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 72672 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8335, expected range: -1.3981 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 60018 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8185, expected range: 0.6424 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 68345 : out of range
Severe: rms_fgdepar=20.4444, expected range: 0.0000 7.3605
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42744 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8742, expected range: -1.2966 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42174 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8592, expected range: -1.4377 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40025 : out of range
Severe: rms_fgdepar=390.6153, expected range: 0.0000 129.6673
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 61995 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=1063.4911, expected range: 0.0000 160.8053
Severe: avg_pge=0.9416, expected range: -0.4879 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40646 : out of range
Severe: rms_fgdepar=760.0258, expected range: 0.0000 187.8266
Severe: avg_pge=0.9223, expected range: -0.3210 0.4440
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42639 : out of range
Severe: rms_fgdepar=775.8191, expected range: 0.0000 247.5877
Severe: avg_pge=0.9299, expected range: -0.6248 0.7500
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9959, expected range: -0.5794 0.7500
MANUAL LAND SYNOP RH2M (%) 60492 : out of range
Severe: rms_fgdepar=31.7671, expected range: 0.0000 15.9922
MANUAL LAND SYNOP RH2M (%) 42174 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8508, expected range: -1.5808 0.7500
MANUAL LAND SYNOP RH2M (%) 42077 : out of range
Severe: rms_fgdepar=47.4818, expected range: 0.0000 22.6594
Severe: avg_pge=0.9791, expected range: -0.0007 0.0074
MANUAL LAND SYNOP RH2M (%) 68438 : out of range
Severe: rms_fgdepar=23.6743, expected range: 0.0000 7.7865
MANUAL LAND SYNOP RH2M (%) 38198 : out of range
Severe: rms_fgdepar=44.2332, expected range: 0.0000 24.5551
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27083 : out of range
Severe: rms_fgdepar=485.4084, expected range: 0.0000 139.6057
BUFR LAND SYNOP RH2M (%) 72240 : out of range
Severe: rms_fgdepar=28.8647, expected range: 0.0000 15.9127
BUFR LAND SYNOP RH2M (%) 95370 : out of range
Severe: rms_fgdepar=53.6600, expected range: 0.0000 27.9814
Severe: avg_pge=0.8515, expected range: -0.0097 0.0182
BUFR LAND SYNOP RH2M (%) 94365 : out of range
Severe: rms_fgdepar=44.6515, expected range: 0.0000 21.8117
BUFR LAND SYNOP RH2M (%) 72295 : out of range
Severe: rms_fgdepar=32.7999, expected range: 0.0000 26.0083
Severe: avg_pge=0.9860, expected range: -0.0868 0.1019
BUFR LAND SYNOP RH2M (%) 94566 : out of range
Severe: avg_pge=0.9962, expected range: 0.0009 0.0050
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) SDIA : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8733, expected range: -1.2447 0.7500
SHIP SURFACE PRESSURE (PA) 9HA4800 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8155, expected range: -1.0981 0.7500
SHIP SURFACE PRESSURE (PA) AUFH : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8562, expected range: -0.6234 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8976, expected range: 0.5256 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) 45172 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=873.5444, expected range: 0.0000 263.5578
Severe: avg_pge=0.9426, expected range: -0.9265 0.7500
SHIP SURFACE PRESSURE (PA) V7WS6 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=718.6491, expected range: 0.0000 352.1387
Severe: avg_pge=0.9078, expected range: -0.9133 0.7500
SHIP SURFACE PRESSURE (PA) 7KBD : out of range
Severe: rms_fgdepar=632.7383, expected range: 0.0000 155.2014
ABBREVIATED SHIP SURFACE PRESSURE (PA) WTDF : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9431, expected range: -1.4513 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4100730 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=425.7527, expected range: 0.0000 189.3965
DRIFTING BUOYS SURFACE PRESSURE (PA) 7401502 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=688.4467, expected range: 0.0000 564.6945
Severely_persistent: avg_pge=0.9196, expected range: -0.3569 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4800642 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8529, expected range: -1.2711 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801652 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8669, expected range: -0.6328 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2301792 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9263, expected range: -0.2785 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2301607 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8497, expected range: 0.2921 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6301539 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8770, expected range: -1.8094 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2501539 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9003, expected range: -1.2101 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801667 : out of range
Severe: avg_pge=0.8667, expected range: -0.7886 0.7500
metar
AUTOMATIC METAR SURFACE PRESSURE (PA) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-670.0000, expected range: -238.4607 235.1274
METAR SURFACE PRESSURE (PA) OMFJ : out of range
Severe: rms_fgdepar=354.3274, expected range: 0.0000 156.1322
AUTOMATIC METAR SURFACE PRESSURE (PA) KQSA : out of range
Severe: avg_pge=0.8072, expected range: -0.9202 0.7500
snow
BUFR LAND SYNOP SNOW (CM) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.5401, expected range: -0.1901 0.1403
Severely_persistent: rms_fgdepar=0.0008, expected range: -0.0002 0.0002
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8107, expected range: 0.4329 1.1583
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8403, expected range: 0.1859 1.0982
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8254, expected range: 0.6613 0.9870
BUFR LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8139, expected range: 0.4594 1.1391
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02210 : out of range
Severe: rms_fgdepar=7.0901, expected range: 0.0000 3.0913
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 68394 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8020, expected range: 0.2741 1.0748
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02135 : out of range
Severe: rms_fgdepar=7.7196, expected range: 0.0000 4.0752
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02209 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=9.1479, expected range: 0.0000 4.1547
MANUAL LAND SYNOP 2M TEMPERATURE (K) 70261 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.4005, expected range: 0.0000 3.2486
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24843 : out of range
Severe: rms_fgdepar=10.5735, expected range: 0.0000 5.7537
MANUAL LAND SYNOP 2M TEMPERATURE (K) 29374 : out of range
Severe: rms_fgdepar=7.5240, expected range: 0.0000 3.6102
MANUAL LAND SYNOP 2M TEMPERATURE (K) 40945 : out of range
Severe: avg_est_pge=0.8069, expected range: -0.1354 0.8460
METAR 2M TEMPERATURE (K) PAFA : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.6690, expected range: 0.0000 4.4334
METAR 2M TEMPERATURE (K) CZFA : out of range
Severe: rms_fgdepar=11.7435, expected range: 0.0000 6.1992
METAR 2M TEMPERATURE (K) USNN : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=9.3430, expected range: 0.0000 4.9302
METAR 2M TEMPERATURE (K) EFRO : out of range
Severe: rms_fgdepar=12.1162, expected range: 0.0000 4.9365
LAND TEMP 2M TEMPERATURE (K) 72501 : out of range
Severe: avg_est_pge=0.8044, expected range: -0.6890 1.2146
LAND TEMP 2M TEMPERATURE (K) 70231 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8230, expected range: -0.5673 1.1430
LAND TEMP 2M TEMPERATURE (K) 72582 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8256, expected range: -0.0376 1.1272
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
Considerable: obs_number=298.0000, expected range: 323.2188 385.1241