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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-06-11 00:00

amsua
METOP-C AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4035, expected range: -0.3521 -0.3398
iasi
METOP-C IASI RADIANCES CHANNEL 249 : out of range
Slight: avg_fgdepar=0.0233, expected range: -0.0016 0.0179
mhs
NOAA-19 MHS ALLSKY RADIANCES CHANNEL 4 : out of range
Slight: obs_number=43988.0000, expected range: 45117.5903 49397.4097
gmi
GPM GMI ALSKY RADIANCES CHANNEL 10 : out of range
Considerable: avg_norm_fgdepar=-0.0241, expected range: 0.0129 0.0793
ssmis
DMSP-17 SSMIS RADIANCES CHANNEL 7 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0052, expected range: 0.0041 0.0047
gpsro
All TERRASAR-X GPSRO SETTING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 288.52 913.63
All GRACE-C GPSRO RISING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 368.62 1635.20
COSMIC2-E6 GPSRO SETTING HEIGHT 18-20 KM : out of range
Slight: stdev_norm_fgdepar=1.7448, expected range: 1.5466 1.6882
Geostationary CSR
HIMAWARI-8 AHI RADIANCES CHANNEL 3 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0744, expected range: 0.0444 0.0597
resat
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 60-61 (HPA) : out of range
Slight: avg_fgdepar=-0.0984, expected range: -0.0949 -0.0828
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 250-251 (HPA) : out of range
19 times in the last 10 days for at least one item
Slight: avg_fgdepar=-0.0091, expected range: -0.0991 -0.0991
Radiosondes
LAND TEMP WIND VECTOR DIFF (M/S) 24122 PRESSURE LAYER 300-600 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=15.0922, expected range: 0.6831 6.5226
LAND TEMP WIND VECTOR DIFF (M/S) 61052 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_fgdepar=27.1957, expected range: 0.5182 8.8083
Severe: rms_fgdepar=27.1984, expected range: 1.1957 8.8168
LAND TEMP WIND VECTOR DIFF (M/S) 91413 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=19.2453, expected range: 0.0000 8.8200
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=182.0000, expected range: 268.8180 277.6820
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : missing
1 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 75.3121 364.8807
Considerable: obs_number=474.0000, expected range: 554.0427 578.2073
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 85 : all data missing
Severe: obs_number=0, expected range: 11.20 305.84
All HIGH RESO LAND TEMP ALL LAYERS South pole : all data missing
Severe: obs_number=0, expected range: 42.84 863.53
amdar
AMDAR WIND VECTOR DIFF (M/S) JP9ZX689 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_fgdepar=23.4642, expected range: -6.1777 14.6098
Severe: rms_fgdepar=23.4642, expected range: 0.0000 17.3646
airep
AIREP WIND VECTOR DIFF (M/S) UAL262 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=20.2376, expected range: 0.0000 11.5063
AIREP WIND VECTOR DIFF (M/S) VIR156T PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.0630, expected range: 0.0000 8.1813
AIREP WIND VECTOR DIFF (M/S) ETD76T PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=21.1552, expected range: 0.0000 10.8435
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 06234 PRESSURE LAYER 300-600 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=22.9928, expected range: -0.9620 7.5335
Severe: rms_fgdepar=22.9928, expected range: 0.2475 7.2933
Severe: avg_pge=0.8923, expected range: -0.9643 0.7500
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 692.4849
synop
AUTOMATIC LAND SYNOP RH2M (%) 68821 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8225, expected range: -1.5342 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 18156 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8627, expected range: -1.8015 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 17656 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8242, expected range: -1.5985 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 60471 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8267, expected range: -0.3686 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 67221 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8564, expected range: 0.6280 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=235.3123, expected range: 25.6892 67.5401
MANUAL LAND SYNOP RH2M (%) 94660 : out of range
Severe: rms_fgdepar=46.5716, expected range: 0.0000 26.2696
MANUAL LAND SYNOP RH2M (%) 60445 : out of range
Severe: rms_fgdepar=43.2196, expected range: 0.0000 38.8417
Severe: avg_pge=0.8338, expected range: -0.0888 0.1104
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 64753 : out of range
Severe: rms_fgdepar=307.9510, expected range: 0.0000 89.5190
BUFR LAND SYNOP RH2M (%) 40400 : out of range
Severe: avg_pge=0.9997, expected range: -0.8413 0.7500
BUFR LAND SYNOP RH2M (%) 71260 : out of range
Severe: rms_fgdepar=42.0820, expected range: 0.0000 40.0121
Severe: avg_pge=0.8234, expected range: -0.0092 0.0180
BUFR LAND SYNOP RH2M (%) 94660 : out of range
Severe: rms_fgdepar=43.8839, expected range: 3.7836 19.3474
BUFR LAND SYNOP RH2M (%) 94972 : out of range
Severe: rms_fgdepar=39.9250, expected range: 0.0000 17.1328
BUFR LAND SYNOP SURFACE PRESSURE (PA) 41960 : out of range
Severe: rms_fgdepar=474.2106, expected range: 0.0000 186.4607
BUFR LAND SYNOP SURFACE PRESSURE (PA) 15270 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=530.5205, expected range: -28.6459 191.4706
Severe: rms_fgdepar=531.1259, expected range: 0.0000 198.3619
Severe: avg_pge=0.8918, expected range: -0.3353 0.6885
BUFR LAND SYNOP SURFACE PRESSURE (PA) 72570 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8033, expected range: -1.6268 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 16197 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8243, expected range: 0.5339 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48078 : out of range
Severe: rms_fgdepar=332.5021, expected range: 2.3411 143.7555
ship
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) AVWF : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8956, expected range: 0.1193 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRTW3 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=585.7653, expected range: -913.2361 1007.1891
Severely_persistent: rms_fgdepar=585.7653, expected range: 0.0000 783.9447
Severely_persistent: avg_pge=0.8260, expected range: -0.9530 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) JASREP : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=549.9902, expected range: 458.5823 700.9897
Severely_persistent: rms_fgdepar=550.0530, expected range: 458.3721 701.4451
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 3EJI6 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=26.7719, expected range: -4.5804 22.1564
Severe: rms_fgdepar=26.7720, expected range: 0.0000 29.4830
Severe: avg_pge=0.9329, expected range: -0.3730 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 9RRFYJJ : out of range
Severe: avg_fgdepar=23.5304, expected range: -6.5718 11.7850
Severe: rms_fgdepar=23.5304, expected range: 0.0000 12.8826
Severe: avg_pge=0.9227, expected range: -1.1794 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) A8SI8 : out of range
Severe: rms_fgdepar=654.6943, expected range: 0.0000 264.6802
BUFR SHIP SYNOP SURFACE PRESSURE (PA) NWS8649 : out of range
Severe: rms_fgdepar=380.3275, expected range: 0.0000 177.8215
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 7JYI : out of range
Severe: avg_fgdepar=600.3505, expected range: -334.0338 264.1497
Severe: rms_fgdepar=600.3505, expected range: 0.0000 268.4137
Severe: avg_pge=0.8466, expected range: -0.4397 0.5903
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9RRFYJJ : out of range
Severe: avg_fgdepar=765.8800, expected range: -1187.6978 1526.9425
Severe: rms_fgdepar=765.8800, expected range: -1084.1423 1501.4078
Severe: avg_pge=0.8622, expected range: -1.4339 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 1501746 : out of range
Severe: rms_fgdepar=345.9305, expected range: 0.0000 164.4008
metar
METAR SURFACE PRESSURE (PA) SBAU : out of range
Severe: rms_fgdepar=399.5942, expected range: 0.0000 170.8544
snow
AUTOMATIC LAND SYNOP SNOW (CM) 11316 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=52.7746, expected range: 30.7095 103.0310
Severely_persistent: rms_fgdepar=52.7746, expected range: 30.7095 103.0310
BUFR LAND SYNOP SNOW (CM) _MI1BC83 : out of range
34 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=54.4013, expected range: 46.0408 62.3168
BUFR LAND SYNOP SNOW (CM) _MI1BC83 : out of range
34 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=55.1467, expected range: 47.2607 63.1764
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=-773.8150, expected range: -775.8548 -771.4851
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=773.8152, expected range: 771.4851 775.8549
BUFR LAND SYNOP SNOW (CM) 11316 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=52.7367, expected range: 30.7205 102.9936
Severely_persistent: rms_fgdepar=52.7367, expected range: 30.7205 102.9936
BUFR LAND SYNOP SNOW (CM) _MI1067E : out of range
27 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=57.7879, expected range: 35.5416 65.6248
BUFR LAND SYNOP SNOW (CM) _MI1067E : out of range
27 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=57.9885, expected range: 36.0298 66.3689
MANUAL LAND SYNOP SNOW (CM) 37566 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=51.0000, expected range: -1.9921 57.4627
Severe: rms_fgdepar=51.0000, expected range: 3.3746 57.5269
BUFR LAND SYNOP SNOW (CM) _MI1EEC7 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=52.0556, expected range: 27.9491 55.8853
BUFR LAND SYNOP SNOW (CM) _MI1EEC7 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=52.6862, expected range: 28.8534 56.8775
BUFR LAND SYNOP SNOW (CM) : out of range
2 times in the last 10 days for at least one item
Considerable: avg_fgdepar=-94.1188, expected range: -81.9319 -58.9491
Considerable: rms_fgdepar=584.9023, expected range: 477.1543 543.9884
t2m
METAR 2M TEMPERATURE (K) VECX : out of range
33 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=13.7503, expected range: 10.4527 14.2920
Severely_persistent: rms_fgdepar=13.9766, expected range: 11.3692 14.9148
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI13149 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.3039, expected range: -21.1626 -13.1258
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI13149 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=15.3353, expected range: 13.1443 21.1863
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=-16.1300, expected range: -21.5056 -12.4069
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=16.2274, expected range: 12.4698 21.5090
MANUAL LAND SYNOP 2M TEMPERATURE (K) 76342 : out of range
Severe: rms_fgdepar=11.6950, expected range: 0.1670 5.2509
MANUAL LAND SYNOP 2M TEMPERATURE (K) 63756 : out of range
Severe: avg_fgdepar=-18.5879, expected range: -1.2129 2.2998
Severe: rms_fgdepar=18.5879, expected range: 0.0000 2.6871
MANUAL LAND SYNOP 2M TEMPERATURE (K) 63866 : out of range
Severe: rms_fgdepar=10.4756, expected range: 0.3212 2.1852
METAR 2M TEMPERATURE (K) KHSA : out of range
Severe: avg_fgdepar=-12.4872, expected range: -1.2159 2.6854
Severe: rms_fgdepar=14.0776, expected range: 0.8099 4.5364
METAR 2M TEMPERATURE (K) KFOE : out of range
Severe: avg_fgdepar=-17.0589, expected range: -3.0510 2.9693
Severe: rms_fgdepar=17.0589, expected range: 0.0000 5.8985
BUFR LAND SYNOP 2M TEMPERATURE (K) 24758 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=-13.0272, expected range: -6.9680 6.5136
Severe: rms_fgdepar=15.4926, expected range: 0.2753 6.3865