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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-13 12:00

amsua
METOP-B/AMSUA RADIANCES CHANNEL 8 : out of range
3 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.6235, expected range: 0.1381 0.5103
Atmospheric Motion Vector
METEOSAT-8/AMV VIS2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA : out of range
1 times in the last 10 days for at least one item
Slight: obs_number=740.0000, expected range: 1082.5214 2722.8119
Geostationary CSR
GOES-15/IMAGER RADIANCES CHANNEL 3 : out of range
1 times in the last 10 days for at least one item
Slight: obs_number=6656.0000, expected range: 10100.6662 44461.3722
Radiosondes
LAND TEMP TEMPERATURE (K) 28225 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=20.6052, expected range: 0.0000 2.0973
Severe: avg_pge=0.8857, expected range: -0.1344 0.2017
LAND TEMP WIND VECTOR DIFF (M/S) 26298 PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=15.4136, expected range: 0.0000 5.5860
LAND TEMP Q (G/KG) 57447 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=5.8374, expected range: 0.0000 3.2480
LAND TEMP Q (G/KG) 26781 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=4.4677, expected range: 0.0000 3.9994
Severe: avg_pge=0.8581, expected range: 0.0006 0.0069
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 600-900 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=1007.0000, expected range: 890.8521 935.6479
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: rms_fgdepar=0.0075, expected range: 0.0000 0.0026
amdar
AMDAR TEMPERATURE (K) JP9Z58WZ (3 pressure layers affected) : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.7987, expected range: 0.0000 1.8495
AMDAR TEMPERATURE (K) JP9Z58WZ PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8941, expected range: -0.7897 0.7500
synop
AUTOMATIC LAND SYNOP RH2M (%) 66325 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9998, expected range: 0.1422 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=124.5692, expected range: 28.5369 81.2541
Considerable: obs_number=4057.0000, expected range: 2061.0512 3292.2821
MANUAL LAND SYNOP RH2M (%) 40016 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=1.0000, expected range: -1.7254 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76220 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8643, expected range: -1.6767 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42408 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8804, expected range: -1.3210 0.7500
AUTOMATIC LAND SYNOP RH2M (%) : out of range
Severe: obs_number=743.0000, expected range: 391.9345 499.4340
AUTOMATIC LAND SYNOP RH2M (%) 68155 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=20.2477, expected range: 0.0000 7.4299
AUTOMATIC LAND SYNOP RH2M (%) 35167 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8497, expected range: -1.7620 0.7500
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9995, expected range: -1.0436 0.7500
MANUAL LAND SYNOP RH2M (%) 17184 : out of range
Severe: rms_fgdepar=31.6438, expected range: 0.0000 8.1644
MANUAL LAND SYNOP RH2M (%) 51777 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9967, expected range: -1.9970 0.7500
MANUAL LAND SYNOP RH2M (%) 43338 : out of range
Severe: rms_fgdepar=38.5932, expected range: 0.0000 27.7693
Severe: avg_pge=0.9704, expected range: -0.0985 0.1168
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43200 : out of range
Severe: avg_pge=0.8062, expected range: 0.4214 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42711 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=556.9771, expected range: 0.0000 482.8870
Severe: avg_pge=0.8965, expected range: -1.2341 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42523 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8773, expected range: -1.1039 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42447 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=1128.4324, expected range: 0.0000 402.5024
Severe: avg_pge=0.9461, expected range: -1.2761 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 57348 : out of range
Severe: rms_fgdepar=376.7618, expected range: 0.0000 308.9577
Severe: avg_pge=0.8203, expected range: -0.9096 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42488 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8064, expected range: -0.9579 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=3.9216, expected range: 0.0000 0.0000
BUFR LAND SYNOP RH2M (%) 26348 : out of range
Severe: rms_fgdepar=15.2729, expected range: 0.0000 8.5929
BUFR LAND SYNOP RH2M (%) 81788 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9999, expected range: -0.1205 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27415 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9341, expected range: -0.3867 0.7500
ship
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 42013 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=15.7724, expected range: 0.0000 11.2334
Severely_persistent: avg_pge=0.8807, expected range: -1.0547 0.7500
SHIP WIND VECTOR DIFF (M/S) DIXJ2 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8744, expected range: -1.0697 0.7500
SHIP WIND VECTOR DIFF (M/S) C6BQ4 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8336, expected range: -1.2195 0.7500
SHIP WIND VECTOR DIFF (M/S) DGQB2 : out of range
Severe: rms_fgdepar=16.3391, expected range: 0.0000 11.3929
Severe: avg_pge=0.9063, expected range: -0.5438 0.7500
SHIP WIND VECTOR DIFF (M/S) V7QK9 : out of range
Severe: rms_fgdepar=15.0380, expected range: 0.0000 12.1911
Severe: avg_pge=0.9100, expected range: -0.5515 0.7500
SHIP SURFACE PRESSURE (PA) 9V5242 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=1083.8708, expected range: 0.0000 235.5952
Severe: avg_pge=0.9391, expected range: -0.6775 0.7500
SHIP SURFACE PRESSURE (PA) WDJ2573 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8222, expected range: -0.6986 0.7500
SHIP SURFACE PRESSURE (PA) C6BQ4 : out of range
Severe: rms_fgdepar=788.9490, expected range: 0.0000 459.0014
Severe: avg_pge=0.9149, expected range: -1.1283 0.7500
SHIP SURFACE PRESSURE (PA) C6DD6 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8317, expected range: -1.0366 0.7500
SHIP SURFACE PRESSURE (PA) C6BC9 : out of range
Severe: rms_fgdepar=327.1139, expected range: 0.0000 179.2865
SHIP SURFACE PRESSURE (PA) WAHG : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=315.3757, expected range: 0.0000 159.9358
SHIP SURFACE PRESSURE (PA) 7KAP : out of range
Severe: avg_pge=0.8624, expected range: -0.8152 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) : out of range
Severe: obs_number=165.0000, expected range: 577.8547 817.1453
BUFR SHIP SYNOP SURFACE PRESSURE (PA) : out of range
Severe: obs_number=626.0000, expected range: 1073.4149 1292.6406
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701560 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=603.1882, expected range: 0.0000 145.1038
Severe: avg_pge=0.8941, expected range: -0.5358 0.6516
DRIFTING BUOYS SURFACE PRESSURE (PA) 4301502 : out of range
Severe: avg_pge=0.8156, expected range: 0.6340 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4601633 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8028, expected range: -1.0024 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701536 : out of range
Severe: avg_pge=0.8201, expected range: -0.6214 0.7500
metar
METAR SURFACE PRESSURE (PA) FQIN : out of range
Severe: rms_fgdepar=381.5673, expected range: 0.0000 103.5832
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=222.0000, expected range: 270.1424 310.9753
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=590.0000, expected range: 707.4399 853.2072
MANUAL LAND SYNOP 2M TEMPERATURE (K) 42770 : out of range
Severe: rms_fgdepar=7.4019, expected range: 0.0000 3.7537
MANUAL LAND SYNOP 2M TEMPERATURE (K) 67867 : out of range
Severe: rms_fgdepar=8.9991, expected range: 0.0000 3.7783
MANUAL LAND SYNOP 2M TEMPERATURE (K) 37699 : out of range
Severe: rms_fgdepar=8.4056, expected range: 0.0000 3.9958
METAR 2M TEMPERATURE (K) LTFA : out of range
Severe: rms_fgdepar=8.2952, expected range: 0.4773 4.3080
METAR 2M TEMPERATURE (K) KSFO : out of range
Severe: rms_fgdepar=7.3422, expected range: 0.4891 3.9256
METAR 2M TEMPERATURE (K) UGMS : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8066, expected range: 0.2976 1.0323
LAND TEMP 2M TEMPERATURE (K) 71722 : out of range
Severe: rms_fgdepar=11.0023, expected range: 0.0000 5.8167
Severe: avg_est_pge=0.8440, expected range: -0.4692 0.8741
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8419, expected range: -0.4234 1.4214
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
Considerable: obs_number=53.0000, expected range: 78.8107 173.9788