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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-06-23 00:00

amsua
METOP-B AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1111, expected range: 0.1615 0.1869
METOP-C AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4017, expected range: -0.3521 -0.3035
ssmis
DMSP-17 SSMIS RADIANCES CHANNEL 7 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0052, expected range: 0.0043 0.0047
Geostationary CSR
HIMAWARI-8 AHI RADIANCES CHANNEL 3 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1661, expected range: -0.0466 0.0597
Radiosondes
LAND TEMP Q (G/KG) 35700 PRESSURE LAYER 900-1200 (HPA) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=6.4144, expected range: 1.0199 7.9178
Severely_persistent: rms_fgdepar=6.4900, expected range: 1.3611 7.8612
HIGH RESO LAND TEMP TEMPERATURE (K) 51656 PRESSURE LAYER 900-1200 (HPA : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-10.3543, expected range: -14.9969 2.2534
Severely_persistent: rms_fgdepar=10.3543, expected range: 0.0000 14.5539
Severely_persistent: avg_pge=0.9287, expected range: -0.2742 0.7500
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 88 : all data missing
Severely_persistent: obs_number=0, expected range: 91.31 183.84
LAND TEMP TEMPERATURE (K) 36003 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=10.3917, expected range: 0.0105 3.1342
HIGH RESO LAND TEMP Q (G/KG) 10771 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=2.0865, expected range: 0.0013 0.9366
HIGH RESO LAND TEMP Q (G/KG) 08302 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=6.3499, expected range: 0.0000 4.3161
HIGH RESO LAND TEMP Q (G/KG) 51656 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_fgdepar=6.7468, expected range: -1.5100 5.8538
Severe: rms_fgdepar=6.7468, expected range: 0.0000 5.8231
Severe: avg_pge=0.8207, expected range: -0.1384 0.1714
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
Severe: obs_number=190.0000, expected range: 273.2900 286.9322
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (3 pressure layers affected : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=272.0000, expected range: 354.5887 372.9113
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA : out of range
Severe: rms_fgdepar=9.2819, expected range: 1.8444 3.8456
All HIGH RESO LAND TEMP ALL LAYERS South Atlantic : all data missing
Severe: obs_number=0, expected range: 91.31 183.84
All HIGH RESO SEA TEMP ALL LAYERS North East Pacific : all data missing
Severe: obs_number=0, expected range: 0.00 520.22
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 600-900 (HPA) : out of range
Considerable: rms_fgdepar=1.0698, expected range: 0.3165 0.8116
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
3 times in the last 10 days for at least one item
Considerable: obs_number=260.0000, expected range: 112.2608 148.4892
LAND TEMP Q (G/KG) PRESSURE LAYER 900-1200 (HPA) : out of range
Slight: rms_fgdepar=2.5094, expected range: 0.8388 2.3768
amdar
All TAMDAR TEMPERATURE (K) ALL LAYERS Alantic Tropical are : all data missing
Severe: obs_number=0, expected range: 0.00 252.75
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 42056 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_fgdepar=33.9133, expected range: -7.2500 13.1706
Severe: rms_fgdepar=33.9133, expected range: 0.0000 13.1706
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 60471 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8365, expected range: 0.3339 0.7500
BUFR LAND SYNOP RH2M (%) 64040 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-50.7113, expected range: -74.7686 -19.6163
Severely_persistent: rms_fgdepar=50.7113, expected range: 19.6163 74.7686
BUFR LAND SYNOP SURFACE PRESSURE (PA) 41573 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=785.5531, expected range: 660.8937 1067.8659
Severely_persistent: rms_fgdepar=786.2663, expected range: 662.5104 1070.6650
MANUAL LAND SYNOP RH2M (%) 40080 : out of range
Severe: rms_fgdepar=47.5128, expected range: 0.0000 27.3972
Severe: avg_pge=0.9999, expected range: -0.0099 0.0194
MANUAL LAND SYNOP RH2M (%) 62054 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8020, expected range: -0.0714 0.0924
MANUAL LAND SYNOP RH2M (%) 16597 : out of range
Severe: avg_pge=0.9470, expected range: -0.9410 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40893 : out of range
Severe: rms_fgdepar=429.5955, expected range: 16.6249 155.4946
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 44275 : out of range
Severe: rms_fgdepar=548.8118, expected range: 0.0000 43.7011
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 41785 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8630, expected range: -1.0216 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 41756 : out of range
Severe: rms_fgdepar=484.1241, expected range: 0.0000 252.3086
Severe: avg_pge=0.8854, expected range: -0.7598 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 38696 : out of range
Severe: rms_fgdepar=454.3523, expected range: 0.0000 182.7442
BUFR LAND SYNOP RH2M (%) 71550 : out of range
Severe: rms_fgdepar=35.6645, expected range: 0.0000 19.9496
BUFR LAND SYNOP RH2M (%) 72421 : out of range
Severe: avg_pge=0.9740, expected range: -0.4308 0.5015
BUFR LAND SYNOP SURFACE PRESSURE (PA) 64040 : out of range
Severe: rms_fgdepar=371.6226, expected range: 0.0000 227.8622
Severe: avg_pge=0.8401, expected range: -0.6116 0.7286
BUFR LAND SYNOP SURFACE PRESSURE (PA) 67315 : out of range
Severe: rms_fgdepar=428.4663, expected range: 0.0000 101.6607
BUFR LAND SYNOP SURFACE PRESSURE (PA) 35925 : out of range
Severe: rms_fgdepar=599.2792, expected range: 0.0000 142.2196
BUFR LAND SYNOP SURFACE PRESSURE (PA) 96147 : out of range
Severe: rms_fgdepar=574.6881, expected range: 0.0000 423.1921
BUFR LAND SYNOP Z (M) 56172 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9950, expected range: -0.8414 0.7500
ship
SHIP WIND VECTOR DIFF (M/S) : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9478, expected range: -0.0767 0.7500
SHIP WIND VECTOR DIFF (M/S) VRKX7 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=28.6091, expected range: -30.2797 60.3288
Severely_persistent: rms_fgdepar=28.6091, expected range: 0.0000 60.6802
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 9HA3182 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9152, expected range: 0.5018 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9VPY4 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=919.8454, expected range: 132.8946 1204.6596
Severely_persistent: rms_fgdepar=919.8454, expected range: 132.8946 1204.6596
Severely_persistent: avg_pge=0.8914, expected range: 0.6147 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9HA4777 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=810.1400, expected range: 486.4974 640.2073
Severely_persistent: rms_fgdepar=810.1400, expected range: 486.4974 640.2073
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 3FSA9 : out of range
42 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8213, expected range: 0.7149 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 3ETM6 : out of range
Severe: avg_pge=0.9156, expected range: 0.5047 0.7500
All BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) WMO BLOCK 8 : all data missing
Severe: obs_number=0, expected range: 120.67 181.83
BUFR SHIP SYNOP SURFACE PRESSURE (PA) TBWUK74 : out of range
Severe: rms_fgdepar=444.6408, expected range: 0.0000 242.1021
BUFR SHIP SYNOP SURFACE PRESSURE (PA) ZCBD4 : out of range
Severe: rms_fgdepar=556.0051, expected range: 0.0000 987.2078
BUFR SHIP SYNOP SURFACE PRESSURE (PA) KAFK : out of range
Severe: avg_fgdepar=509.6400, expected range: -334.9483 345.1200
Severe: rms_fgdepar=525.0090, expected range: 0.0000 309.2448
All BUFR SHIP SYNOP WMO BLOCK 45 : all data missing
Severe: obs_number=0, expected range: 97.04 465.39
buoy
MOORED BUOYS WIND VECTOR DIFF (M/S) 2200192 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9308, expected range: 0.3174 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 3301611 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=545.2071, expected range: -925.5178 975.9378
Severely_persistent: rms_fgdepar=545.7709, expected range: -779.1882 1078.8689
Severely_persistent: avg_pge=0.8911, expected range: -1.3599 0.7500
metar
AUTOMATIC METAR SURFACE PRESSURE (PA) EPBC : out of range
Severe: avg_fgdepar=-988.1700, expected range: -149.9186 193.1011
Severe: rms_fgdepar=988.1700, expected range: 0.0000 194.8798
Severe: avg_pge=0.9049, expected range: -0.1096 0.1233
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=-772.8884, expected range: -773.0245 -772.5668
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=772.8885, expected range: 772.5670 773.0245
t2m
MANUAL LAND SYNOP 2M TEMPERATURE (K) 60220 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-13.4049, expected range: -21.6687 17.1085
Severely_persistent: rms_fgdepar=13.4049, expected range: -14.0214 21.2236
METAR 2M TEMPERATURE (K) VECX : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=12.5503, expected range: 5.0234 16.7463
Severely_persistent: rms_fgdepar=12.7330, expected range: 4.9478 17.0773
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89266 : out of range
Severe: rms_fgdepar=11.7627, expected range: 0.0000 5.6005
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 52378 : out of range
Severe: avg_fgdepar=12.9674, expected range: 0.9900 13.0819
Severe: rms_fgdepar=12.9674, expected range: 0.9900 13.0819
MANUAL LAND SYNOP 2M TEMPERATURE (K) 32215 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=12.9454, expected range: -4.8811 4.0901
Severe: rms_fgdepar=12.9996, expected range: 0.0000 4.3557
METAR 2M TEMPERATURE (K) KSKF : out of range
Severe: rms_fgdepar=12.7053, expected range: 0.0000 5.8854
METAR 2M TEMPERATURE (K) RODN : out of range
Severe: avg_fgdepar=-18.6809, expected range: -3.2929 4.0587
Severe: rms_fgdepar=18.6809, expected range: 0.0000 4.5104
LAND TEMP 2M TEMPERATURE (K) 32215 : out of range
Severe: avg_fgdepar=13.0661, expected range: -5.6392 4.3813
Severe: rms_fgdepar=13.0661, expected range: 0.0000 5.5106
BUFR LAND SYNOP 2M TEMPERATURE (K) 32215 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=12.8724, expected range: -4.8911 4.0023
Severe: rms_fgdepar=12.9265, expected range: 0.0000 4.3821
BUFR LAND SYNOP 2M TEMPERATURE (K) 76258 : out of range
Severe: rms_fgdepar=11.2748, expected range: 0.0000 5.6673
rh2m
AUTOMATIC LAND SYNOP RH2M (%) 72492 : out of range
Severe: rms_fgdepar=38.9094, expected range: 0.0000 21.0646
AUTOMATIC LAND SYNOP RH2M (%) 72268 : out of range
Severe: rms_fgdepar=36.3155, expected range: 0.0000 16.7137
MANUAL LAND SYNOP RH2M (%) 60535 : out of range
Severe: rms_fgdepar=32.6311, expected range: 0.0000 18.4567
METAR RH2M (%) GMFB : out of range
Severe: rms_fgdepar=33.1216, expected range: 0.0000 15.4418
BUFR LAND SYNOP RH2M (%) 60200 : out of range
Severe: rms_fgdepar=34.8740, expected range: 0.0000 17.1387
BUFR LAND SYNOP RH2M (%) 41941 : out of range
Severe: rms_fgdepar=35.1036, expected range: 0.0000 17.1379