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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

cris
NOAA20/CRIS RADIANCES (40 channels affected) : out of range
Severe: avg_biascorr=0.5217, expected range: 0.1637 0.3722
resat
AURA/OMI OZONE, TOP PRESSURE LAYER 0-1 (HPA) : out of range
3 times in the last 10 days for at least one item
Slight: obs_number=12794.0000, expected range: 14344.1012 26486.6882
Radiosondes
LAND TEMP TEMPERATURE (K) 32540 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=6.2032, expected range: 0.0000 2.4986
LAND TEMP WIND VECTOR DIFF (M/S) 24122 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.5277, expected range: 0.0000 5.1546
LAND TEMP WIND VECTOR DIFF (M/S) 54374 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=39.0018, expected range: 0.0000 12.7671
Severe: avg_pge=0.9145, expected range: -0.6110 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=498.0000, expected range: 658.0794 712.7441
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 300-600 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=0.1770, expected range: 0.0372 0.0919
HIGH RESO LAND TEMP Q (G/KG) (4 pressure layers affected) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=346.0000, expected range: 462.6876 515.7830
HIGH RESO LAND TEMP Q (G/KG) 94610 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=2.9127, expected range: 0.0000 1.5959
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (4 pressure layers affected : out of range
Considerable: rms_fgdepar=4.7431, expected range: 2.0897 3.8334
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 97300 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=17.9519, expected range: 0.0000 15.9302
Severe: avg_pge=0.8025, expected range: -0.7834 0.7500
LAND PILOT WIND VECTOR DIFF (M/S) 97372 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: avg_pge=0.8609, expected range: -0.7581 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=1.0000, expected range: 0.1739 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86221 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8010, expected range: -0.7123 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 12882 : out of range
Severe: rms_fgdepar=31.4703, expected range: 0.0000 17.6902
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 68362 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=521.3917, expected range: 0.0000 86.1309
Severe: avg_pge=0.9047, expected range: -1.0086 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 68619 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=665.0394, expected range: 0.0000 86.7321
Severe: avg_pge=0.9282, expected range: -0.0410 0.0453
MANUAL LAND SYNOP RH2M (%) 38341 : out of range
Severe: rms_fgdepar=23.7559, expected range: 0.0000 10.4812
MANUAL LAND SYNOP RH2M (%) 63671 : out of range
Severe: rms_fgdepar=16.3938, expected range: 0.0000 8.4752
MANUAL LAND SYNOP RH2M (%) 35671 : out of range
Severe: rms_fgdepar=27.6574, expected range: 0.0000 10.3934
MANUAL LAND SYNOP RH2M (%) 80222 : out of range
Severe: rms_fgdepar=36.8137, expected range: 0.0000 18.4919
MANUAL LAND SYNOP RH2M (%) 35532 : out of range
Severe: avg_pge=0.9280, expected range: -0.1223 0.1496
MANUAL LAND SYNOP RH2M (%) 63962 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=50.6227, expected range: 0.0000 37.7369
Severe: avg_pge=0.9993, expected range: -1.0800 0.7500
MANUAL LAND SYNOP RH2M (%) 83916 : out of range
Severe: rms_fgdepar=32.9781, expected range: 0.0000 18.0442
MANUAL LAND SYNOP RH2M (%) 38696 : out of range
Severe: rms_fgdepar=44.5621, expected range: 0.0000 23.9730
MANUAL LAND SYNOP RH2M (%) 60748 : out of range
Severe: rms_fgdepar=33.3976, expected range: 0.0000 16.4353
MANUAL LAND SYNOP RH2M (%) 43379 : out of range
Severe: avg_pge=0.9013, expected range: -0.6664 0.7500
MANUAL LAND SYNOP RH2M (%) : out of range
Severe: obs_number=54.0000, expected range: 71.2980 84.9373
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 32252 : out of range
Severe: rms_fgdepar=623.7462, expected range: 0.0000 105.8264
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83096 : out of range
Severe: rms_fgdepar=418.9553, expected range: 0.0000 192.0627
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 68619 : out of range
Severe: rms_fgdepar=743.1071, expected range: 0.0000 39.9945
Severe: avg_pge=0.9150, expected range: -0.0594 0.0656
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=141.3810, expected range: 5.6256 80.0204
Severe: avg_biascorr=-5.1563, expected range: 0.0000 0.0000
BUFR LAND SYNOP RH2M (%) 81788 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9916, expected range: 0.1704 0.7500
BUFR LAND SYNOP RH2M (%) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=59.0000, expected range: 61.0000 61.0000
Considerable: obs_number=79.0000, expected range: 84.6514 103.2434
BUFR LAND SYNOP SURFACE PRESSURE (PA) 23330 : out of range
Severe: rms_fgdepar=543.1862, expected range: 0.0000 113.0038
BUFR LAND SYNOP SURFACE PRESSURE (PA) 81982 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8724, expected range: -0.8840 0.7500
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) 41064 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=797.1324, expected range: -477.5765 641.5317
Severely_persistent: avg_pge=0.9195, expected range: -1.1266 0.7500
SHIP SURFACE PRESSURE (PA) 9V9498 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8519, expected range: -1.1988 0.7500
SHIP WIND VECTOR DIFF (M/S) UDKG : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8861, expected range: -0.3500 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=0.8125, expected range: 0.5654 0.7500
SHIP SURFACE PRESSURE (PA) 9VDD2 : out of range
Severe: avg_pge=0.8608, expected range: -0.3602 0.7500
SHIP SURFACE PRESSURE (PA) D5HF2 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8831, expected range: -0.1118 0.7500
SHIP SURFACE PRESSURE (PA) 3ETA7 : out of range
Severe: avg_pge=0.8251, expected range: -0.7680 0.7500
SHIP SURFACE PRESSURE (PA) 9V9408 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8079, expected range: -0.9339 0.7500
SHIP SURFACE PRESSURE (PA) 9HJB9 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8425, expected range: -1.3579 0.7500
SHIP SURFACE PRESSURE (PA) 3FPS9 : out of range
Severe: rms_fgdepar=308.8569, expected range: 0.0000 139.2694
SHIP WIND VECTOR DIFF (M/S) DIXJ2 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9145, expected range: -1.3467 0.7500
SHIP WIND VECTOR DIFF (M/S) VRNL8 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8362, expected range: -0.2390 0.7500
buoy
DRIBU WIND VECTOR DIFF (M/S) 23451 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8483, expected range: -0.0686 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2601625 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8994, expected range: -1.5086 0.7500
MOORED BUOYS SURFACE PRESSURE (PA) 6101001 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8677, expected range: -0.4805 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
3 times in the last 10 days for at least one item
Slight: obs_number=8696.0000, expected range: 8952.3906 10184.6649
metar
METAR SURFACE PRESSURE (PA) UBEE : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=408.0874, expected range: 0.0000 179.9870
snow
AUTOMATIC LAND SYNOP SNOW (CM) : out of range
16 times in the last 10 days for at least one item
Slight: avg_fgdepar=-14.3241, expected range: -8.6124 7.3549
Slight: rms_fgdepar=195.6094, expected range: -91.8104 104.1879
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8173, expected range: 0.6531 0.9243
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8178, expected range: 0.6459 0.9293
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=78.0000, expected range: 63.5016 69.0127
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89799 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8152, expected range: 0.2705 1.0719
MANUAL LAND SYNOP 2M TEMPERATURE (K) 83970 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=9.1355, expected range: 0.0000 3.9619
MANUAL LAND SYNOP 2M TEMPERATURE (K) 13174 : out of range
Severe: rms_fgdepar=7.8547, expected range: 0.0150 3.8013
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89009 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8228, expected range: -0.0178 1.2148
METAR 2M TEMPERATURE (K) HSOB : out of range
Severe: rms_fgdepar=12.5720, expected range: 0.0000 5.1674
METAR 2M TEMPERATURE (K) OIGK : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8118, expected range: 0.3777 0.9171
BUFR LAND SYNOP 2M TEMPERATURE (K) 83970 : out of range
Severe: rms_fgdepar=9.1855, expected range: 0.0000 3.3680
rh2m
MANUAL LAND SYNOP RH2M (%) 83813 : out of range
Severe: rms_fgdepar=33.6178, expected range: 0.0000 17.8805
MANUAL LAND SYNOP RH2M (%) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=67.0000, expected range: 66.0000 66.0000