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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-09-17 00:00

iasi
METOP-B IASI RADIANCES CHANNEL 131 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.3339, expected range: 0.3647 0.3896
airs
AQUA AIRS RADIANCES CHANNEL 92 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2215, expected range: -0.2047 -0.1895
AQUA AIRS RADIANCES CHANNEL 128 : out of range
4 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0304, expected range: -0.1337 -0.1007
Severe: avg_biascorr=0.0420, expected range: 0.0691 0.0917
AQUA AIRS RADIANCES CHANNEL 129 : out of range
4 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1436, expected range: -0.2169 -0.1793
Severe: avg_biascorr=-0.1071, expected range: -0.0800 -0.0535
AQUA AIRS RADIANCES CHANNEL 138 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0534, expected range: -0.1652 -0.1068
AQUA AIRS RADIANCES CHANNEL 93 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.0872, expected range: -0.0662 -0.0488
AQUA AIRS RADIANCES CHANNEL 99 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0248, expected range: 0.0522 0.0595
AQUA AIRS RADIANCES CHANNEL 104 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0322, expected range: 0.0632 0.0868
AQUA AIRS RADIANCES CHANNEL 111 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.0613, expected range: -0.0406 -0.0181
AQUA AIRS RADIANCES CHANNEL 116 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0086, expected range: 0.0552 0.0706
AQUA AIRS RADIANCES CHANNEL 117 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0151, expected range: 0.0319 0.0412
AQUA AIRS RADIANCES CHANNEL 123 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.1015, expected range: -0.0765 -0.0563
ssmis
DMSP-18 SSMIS RADIANCES CHANNEL 7 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=5.0505, expected range: 3.5984 4.2196
resat
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 10-11 (HPA) : out of range
19 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.0090, expected range: 0.0066 0.0068
Severely_persistent: avg_fgdepar=-0.0251, expected range: -0.0340 -0.0324
METOP-B GOME-2 OZONE, TOP PRESSURE LAYER 12-13 (HPA) : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=4.5637, expected range: 5.0442 5.2466
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 1600-1601 (HPA) : out of range
9 times in the last 10 days for at least one item
Slight: stdev_fgdepar=3.3220, expected range: 2.8234 3.3217
Radiosondes
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 85 : all data missing
Severely_persistent: obs_number=0, expected range: 120.48 161.18
LAND TEMP WIND VECTOR DIFF (M/S) 31538 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.0219, expected range: 1.8543 5.7974
Severe: avg_pge=0.8172, expected range: -0.1192 0.2691
LAND TEMP Q (G/KG) 16113 PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=4.4404, expected range: 0.0000 2.2671
All LAND TEMP ALL LAYERS WMO BLOCK 70 : all data missing
Severe: obs_number=0, expected range: 57.61 101.99
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=3.6185, expected range: 0.0000 1.3614
HIGH RESO LAND TEMP Q (G/KG) 16113 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=4.2343, expected range: 0.0000 2.0190
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
Severe: obs_number=192.0000, expected range: 280.7646 293.4576
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 600-900 (HPA) : out of range
Severe: avg_fgdepar=1.2697, expected range: -0.0616 0.4437
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 46 : all data missing
Severe: obs_number=0, expected range: 25.23 322.70
All HIGH RESO LAND TEMP ALL LAYERS South pole : all data missing
Severe: obs_number=0, expected range: 0.00 404.01
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=478.0000, expected range: 553.4873 571.0127
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected : out of range
Considerable: obs_number=360.0000, expected range: 445.2956 465.9544
amdar
WIGOS AMDAR TEMPERATURE (K) F5IHLIJA PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=7.8179, expected range: 0.0000 2.5521
WIGOS AMDAR WIND VECTOR DIFF (M/S) EU0821 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=20.4313, expected range: 0.3000 5.1032
WIGOS AMDAR Q (G/KG) BSTXQVBA PRESSURE LAYER 900-1200 (HPA) : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=-6.6291, expected range: -8.1611 -0.5480
Severe: rms_fgdepar=6.7462, expected range: 0.9011 8.2734
MODE-S WIND VECTOR DIFF (M/S) M2C2BA8 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_fgdepar=20.5063, expected range: -0.0610 5.6034
Severe: rms_fgdepar=20.5063, expected range: 0.2090 6.0920
airep
AIREP WIND VECTOR DIFF (M/S) AAL220 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=19.8690, expected range: 0.0000 8.9726
AIREP WIND VECTOR DIFF (M/S) NBT602 PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=20.9907, expected range: 0.0000 16.1320
AIREP WIND VECTOR DIFF (M/S) ACA864 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.6947, expected range: 0.0000 8.1194
AIREP WIND VECTOR DIFF (M/S) BAW99 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_fgdepar=24.3283, expected range: -1.9025 8.5602
Severe: rms_fgdepar=24.3283, expected range: 0.0000 13.3522
Severe: avg_pge=0.8518, expected range: -0.3410 0.5180
AIREP WIND VECTOR DIFF (M/S) RJA264D PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.8153, expected range: 2.4928 7.6016
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 42056 PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=20.8991, expected range: -36.5215 50.4204
Severe: rms_fgdepar=20.8991, expected range: -35.6116 49.9392
Severe: avg_pge=0.8358, expected range: -1.7520 0.7500
BUFR LAND PILOT WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : missing
Severe: obs_number=0.0000, expected range: 25.3976 175.7483
All BUFR LAND PILOT ALL LAYERS North West Pacific : all data missing
Severe: obs_number=0, expected range: 27.05 166.73
synop
MANUAL LAND SYNOP RH2M (%) 67250 : out of range
Severe: rms_fgdepar=31.4731, expected range: 0.0000 12.5800
MANUAL LAND SYNOP RH2M (%) 67261 : out of range
Severe: rms_fgdepar=30.9507, expected range: 0.0000 12.3343
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 91203 : out of range
Severe: rms_fgdepar=326.1984, expected range: 0.0000 125.3175
Severe: avg_pge=0.8098, expected range: -0.0581 0.0701
BUFR LAND SYNOP RH2M (%) _MI19C70 : out of range
Severe: rms_fgdepar=37.1980, expected range: 0.0000 16.4022
BUFR LAND SYNOP RH2M (%) 53502 : out of range
Severe: rms_fgdepar=31.8354, expected range: 0.0000 13.0178
BUFR LAND SYNOP RH2M (%) 71244 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=31.4909, expected range: 0.0000 10.7085
BUFR LAND SYNOP RH2M (%) _MI168E4 : out of range
Severe: rms_fgdepar=34.6102, expected range: 0.0000 10.2340
BUFR LAND SYNOP RH2M (%) 94498 : out of range
Severe: avg_pge=0.9960, expected range: -0.3525 0.4692
BUFR LAND SYNOP RH2M (%) _MI13CD8 : out of range
Severe: rms_fgdepar=35.1985, expected range: 0.0000 16.4648
BUFR LAND SYNOP RH2M (%) 16459 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9349, expected range: -0.2500 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 31442 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=316.2921, expected range: 0.0000 134.7992
BUFR LAND SYNOP SURFACE PRESSURE (PA) 37663 : out of range
Severe: rms_fgdepar=578.8707, expected range: 5.0599 62.4715
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24763 : out of range
Severe: rms_fgdepar=418.0548, expected range: 0.0000 211.0016
Severe: avg_pge=0.8365, expected range: -0.5651 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 23174 : out of range
Severe: rms_fgdepar=507.1031, expected range: 0.0000 174.3756
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71588 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=543.9047, expected range: 35.5705 864.2381
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) OYGR2 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-591.8282, expected range: -836.2599 -403.6119
Severely_persistent: rms_fgdepar=591.8282, expected range: 403.9932 835.9679
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRLJ4 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=1297.0961, expected range: 355.2710 2017.4851
Severely_persistent: rms_fgdepar=1297.0961, expected range: 371.4656 2007.2000
BUFR SHIP SYNOP SURFACE PRESSURE (PA) WTED : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-550.1831, expected range: -861.2242 693.5218
Severely_persistent: rms_fgdepar=569.0367, expected range: -672.1663 865.2224
Severely_persistent: avg_pge=0.8029, expected range: -1.1076 0.7500
SHIP WIND VECTOR DIFF (M/S) VRIB3 : out of range
Severe: rms_fgdepar=18.1023, expected range: 0.0000 12.3358
Severe: avg_pge=0.9174, expected range: -0.1484 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3047 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=-576.4550, expected range: -593.6976 353.7324
Severe: rms_fgdepar=576.4550, expected range: 0.0000 576.0557
Severe: avg_pge=0.8891, expected range: -1.0339 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 9HA3417 : out of range
Severe: avg_fgdepar=20.7583, expected range: -6.9241 12.1612
Severe: rms_fgdepar=20.7583, expected range: 0.0000 12.1612
Severe: avg_pge=0.9265, expected range: -0.9924 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) GNF8EBW : out of range
Severe: rms_fgdepar=17.1915, expected range: 0.0000 10.4013
Severe: avg_pge=0.8895, expected range: -0.4763 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 3ETR7 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=742.7604, expected range: 223.5781 1100.4099
Severe: rms_fgdepar=742.7604, expected range: 223.5895 1100.4024
BUFR SHIP SYNOP SURFACE PRESSURE (PA) V7QT7 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=-658.3270, expected range: -739.7023 810.7998
Severe: rms_fgdepar=658.3279, expected range: 0.0000 675.7379
Severe: avg_pge=0.8689, expected range: -0.5623 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 6501670 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-623.8207, expected range: -349.0635 360.1089
Severely_persistent: rms_fgdepar=623.8738, expected range: 0.0000 560.7377
Severely_persistent: avg_pge=0.9172, expected range: -1.1730 0.7500
metar
AUTOMATIC METAR SURFACE PRESSURE (PA) LIRK : out of range
Severe: avg_fgdepar=741.9256, expected range: -272.2299 720.2261
Severe: rms_fgdepar=752.2438, expected range: 0.0000 711.5756
Severe: avg_pge=0.8224, expected range: -0.7601 0.7500
snow
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-769.4841, expected range: -774.6956 -771.9991
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=769.8384, expected range: 771.9991 774.6958
BUFR LAND SYNOP SNOW (CM) _MF12FF7 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=51.4545, expected range: 39.8671 56.2999
BUFR LAND SYNOP SNOW (CM) _MF12FF7 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=52.1187, expected range: 41.7312 55.0935
t2m
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI13149 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-16.6604, expected range: -21.9366 -12.2792
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI13149 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=16.7623, expected range: 12.3351 21.9276
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
36 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-13.8491, expected range: -20.6595 -11.9900
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
36 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=13.8867, expected range: 12.0081 20.6607
METAR 2M TEMPERATURE (K) KHSA : out of range
Severe: avg_fgdepar=-15.7303, expected range: -2.6699 3.3197
Severe: rms_fgdepar=15.7303, expected range: 0.0000 8.0989
METAR 2M TEMPERATURE (K) EDGS : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.4223, expected range: 0.0000 3.1627
BUFR LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
Severe: avg_fgdepar=12.4593, expected range: 2.6333 14.9552
Severe: rms_fgdepar=12.6106, expected range: 3.1868 14.7277
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
Severe: obs_number=3093.0000, expected range: 5714.5624 6224.4376
Considerable: obs_number=1145.0000, expected range: 2125.2447 2430.8729