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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2021-09-19 12:00

cris
NOAA20 CRIS RADIANCES CHANNEL 101 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1079, expected range: 0.0822 0.0955
NOAA20 CRIS RADIANCES CHANNEL 989 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0356, expected range: -0.1254 -0.0429
mhs
METOP-A MHS ALLSKY RADIANCES CHANNEL 3 : out of range
14 times in the last 10 days for at least one item
Slight: avg_norm_fgdepar=0.1056, expected range: -0.1527 0.0478
gpsro
METOP-A GRAS SETTING HEIGHT 2-4 KM : out of range
6 times in the last 10 days for at least one item
Slight: avg_norm_fgdepar=-0.1076, expected range: 0.1219 1.0347
Atmospheric Motion Vector
GOES-17 AMV VIS1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 900-1200 (HPA) : out of range
Considerable: obs_number=5156.0000, expected range: 6414.4739 8486.5261
Geostationary CSR
METEOSAT-8 SEVIRI RADIANCES CHANNEL 2 : out of range
Considerable: stdev_fgdepar=1.2957, expected range: 0.7602 1.0959
Radiosondes
All HIGH RESO SEA TEMP ALL LAYERS North West Pacific : all data missing
Severely_persistent: obs_number=0, expected range: 79.46 146.54
LAND TEMP TEMPERATURE (K) 62306 (3 pressure layers affected) : out of range
Severe: rms_fgdepar=7.8286, expected range: 0.0420 2.3888
All LAND TEMP ALL LAYERS WMO BLOCK 47 : all data missing
Severe: obs_number=0, expected range: 30.80 151.45
All LAND TEMP ALL LAYERS WMO BLOCK 82 : all data missing
Severe: obs_number=0, expected range: 270.86 435.39
All LAND TEMP ALL LAYERS WMO BLOCK 83 : all data missing
Severe: obs_number=0, expected range: 237.91 394.34
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 16064 (2 pressure layers af : out of range
Severe: rms_fgdepar=15.1827, expected range: 0.0000 6.6194
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 17095 PRESSURE LAYER 300-60 : out of range
Severe: rms_fgdepar=20.9022, expected range: 0.0000 8.5699
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 43 : all data missing
Severe: obs_number=0, expected range: 54.16 195.50
LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=4099.0000, expected range: 4700.9838 5482.5162
LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected) : out of range
Considerable: obs_number=253.0000, expected range: 316.0151 426.9849
LAND TEMP WIND VECTOR DIFF (M/S) (4 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=240.0000, expected range: 738.8059 1248.9441
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
Considerable: obs_number=89.0000, expected range: 227.4654 300.8203
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
Considerable: obs_number=463.0000, expected range: 578.2760 731.4740
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
Considerable: obs_number=855.0000, expected range: 938.8504 962.1496
amdar
TAMDAR TEMPERATURE (K) PRESSURE LAYER 900-1200 (HPA) : missing
Severe: obs_number=0.0000, expected range: 0.0000 259.4126
ADS-C WIND VECTOR DIFF (M/S) QWTUIJZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.6189, expected range: 0.0000 8.3572
ADS-C WIND VECTOR DIFF (M/S) B1J0DSZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.3962, expected range: 0.4197 6.1231
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : missing
4 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 0.0000 928.3827
pilot
LAND PILOT 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: obs_number=305.0000, expected range: 504.9940 837.5060
LAND PILOT WIND VECTOR DIFF (M/S) (4 pressure layers affected) : out of range
Considerable: obs_number=90.0000, expected range: 281.3395 534.9105
synop
BUFR LAND SYNOP SURFACE PRESSURE (PA) 86648 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=677.2249, expected range: -1105.7148 1322.5185
Severely_persistent: rms_fgdepar=677.2249, expected range: 0.0000 1823.8247
Severely_persistent: avg_pge=0.9186, expected range: -1.1767 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 17847 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=414.8304, expected range: 0.0000 41.2330
Severe: avg_pge=0.8685, expected range: -0.0314 0.0359
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 93498 : out of range
Severe: avg_pge=0.8288, expected range: -1.5969 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 64040 : out of range
Severe: avg_pge=0.8114, expected range: 0.5871 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 87640 : out of range
Severe: rms_fgdepar=303.2613, expected range: 0.0000 134.2286
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43311 : out of range
Severe: rms_fgdepar=579.9925, expected range: 0.0000 222.5691
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 67341 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=412.6437, expected range: 0.0000 131.3157
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76243 : out of range
Severe: avg_pge=0.8155, expected range: -0.1956 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42867 : out of range
Severe: rms_fgdepar=498.0359, expected range: 0.0000 235.7327
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43369 : out of range
Severe: rms_fgdepar=547.4190, expected range: 0.0000 121.4697
MANUAL LAND SYNOP RH2M (%) 42328 : out of range
Severe: avg_pge=0.9879, expected range: -0.0435 0.0564
MANUAL LAND SYNOP RH2M (%) 67889 : out of range
Severe: rms_fgdepar=39.0306, expected range: 0.0000 20.8054
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71366 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=461.2447, expected range: 20.5569 80.5339
Severe: avg_pge=0.8429, expected range: -0.3529 0.4872
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48429 : out of range
Severe: rms_fgdepar=375.0949, expected range: 0.0000 181.9026
BUFR LAND SYNOP RH2M (%) 72432 : out of range
Severe: rms_fgdepar=30.4188, expected range: 0.0000 14.8276
BUFR LAND SYNOP RH2M (%) 16754 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9902, expected range: -0.6989 0.7500
BUFR LAND SYNOP RH2M (%) _8075D97 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=34.0836, expected range: 0.0000 13.2952
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
3 times in the last 10 days for at least one item
Considerable: obs_number=94.0000, expected range: 157.6013 199.7320
ship
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) VRQO8 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8912, expected range: 0.5328 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V9404 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=553.6401, expected range: 20.5031 1033.5895
Severely_persistent: rms_fgdepar=553.6401, expected range: 19.9083 1037.1267
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 3EDZ7 : out of range
Severe: avg_pge=0.8715, expected range: 0.5143 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9HA4612 : out of range
Severe: avg_fgdepar=536.4118, expected range: -431.7513 403.6047
Severe: rms_fgdepar=647.6516, expected range: -439.2530 657.6189
BUFR SHIP SYNOP SURFACE PRESSURE (PA) OWFD2 : out of range
Severe: avg_fgdepar=-626.5593, expected range: -731.3425 -102.1441
Severe: rms_fgdepar=626.5593, expected range: 102.1441 731.3425
Severe: avg_pge=0.8586, expected range: 0.5866 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) EUMDE15 : out of range
Severe: rms_fgdepar=307.3084, expected range: 0.0000 95.0164
BUFR SHIP SYNOP SURFACE PRESSURE (PA) V7DJ5 : out of range
Severe: rms_fgdepar=554.1341, expected range: 0.0000 386.4134
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRKQ5 : out of range
Severe: rms_fgdepar=590.8662, expected range: 0.0000 656.6740
BUFR SHIP SYNOP SURFACE PRESSURE (PA) HOIP : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=-663.9001, expected range: -401.2052 295.1478
Severe: rms_fgdepar=663.9001, expected range: -285.4028 396.1459
Severe: avg_pge=0.8682, expected range: -0.9445 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 3101511 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8660, expected range: -1.6533 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1501746 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=502.0294, expected range: 0.0000 1312.7564
Severely_persistent: avg_pge=0.8759, expected range: -0.9121 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 5601620 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=563.6298, expected range: 0.0000 351.2337
Severe: avg_pge=0.8718, expected range: -0.6428 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1501745 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=411.6971, expected range: 0.0000 79.6772
metar
METAR SURFACE PRESSURE (PA) SKGI : out of range
Severe: rms_fgdepar=648.3352, expected range: 0.0000 385.5883
METAR SURFACE PRESSURE (PA) MMZO : out of range
Severe: rms_fgdepar=341.3595, expected range: 0.0000 85.2004
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89811 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-16.5293, expected range: -20.7938 -12.1840
Severely_persistent: rms_fgdepar=16.6326, expected range: 12.1765 20.8272
METAR 2M TEMPERATURE (K) KMSY : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.1178, expected range: -12.0783 12.0790
Severely_persistent: rms_fgdepar=15.1990, expected range: 0.0000 13.4051
BUFR LAND SYNOP 2M TEMPERATURE (K) 89811 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-16.5771, expected range: -20.8369 -12.2381
Severely_persistent: rms_fgdepar=16.6806, expected range: 12.2301 20.8724
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=2728.0000, expected range: 6658.4145 6988.2914
Severe: obs_number=11207.0000, expected range: 62955.5013 72934.9693
rh2m
BUFR LAND SYNOP RH2M (%) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=2721.0000, expected range: 4769.3844 5310.8509
Considerable: obs_number=11146.0000, expected range: 34919.7327 47560.9732