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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-08 12:00

amsua
METOP-A/AMSUA RADIANCES (10 channels affected) : out of range
Slight: obs_number=4242.0000, expected range: 5937.1495 15715.7394
mhs
ALLSKY NOAA-19/MHS RADIANCES (5 channels affected) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=20929.0000, expected range: 25824.7715 33831.1204
resat
AURA/OMI OZONE, TOP PRESSURE LAYER 0-1 (HPA) : out of range
Considerable: obs_number=10140.0000, expected range: 14325.5427 26503.1416
Radiosondes
LAND TEMP TEMPERATURE (K) 24122 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=11.4522, expected range: 0.0000 3.2978
Severe: avg_pge=0.9148, expected range: -0.2175 0.3517
LAND TEMP TEMPERATURE (K) 29231 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: avg_pge=0.8199, expected range: -0.3429 0.4772
LAND TEMP Q (G/KG) 74794 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=3.4045, expected range: 0.0000 1.8961
LAND TEMP Q (G/KG) 83779 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=2.6430, expected range: 0.0000 1.2872
LAND TEMP WIND VECTOR DIFF (M/S) 25913 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=27.0531, expected range: 0.0000 5.4825
LAND TEMP WIND VECTOR DIFF (M/S) 30965 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=29.8670, expected range: 0.0000 8.0533
Severe: avg_pge=0.9360, expected range: -0.3578 0.5963
HIGH RESO SEA TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Slight: avg_fgdepar=0.7151, expected range: -0.2185 0.6254
Slight: rms_fgdepar=1.6302, expected range: 0.3356 1.2110
airep
All AIREP WIND VECTOR DIFF (M/S) ALL LAYERS Indian Ocean : all data missing
Severe: obs_number=0, expected range: 256.36 628.96
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 68558 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8545, expected range: -0.9956 0.7500
BUFR LAND SYNOP RH2M (%) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=151.0000, expected range: 169.0000 169.0000
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 47662 : out of range
Severe: rms_fgdepar=333.6340, expected range: 0.0000 137.8527
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 47675 : out of range
Severe: rms_fgdepar=312.6478, expected range: 0.0000 122.6437
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 47666 : out of range
Severe: rms_fgdepar=413.2944, expected range: 0.0000 94.0135
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 47668 : out of range
Severe: rms_fgdepar=313.8005, expected range: 0.0000 103.4818
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 68449 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8113, expected range: -1.1765 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76220 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=581.9864, expected range: 0.0000 196.2078
Severe: avg_pge=0.8593, expected range: -1.3208 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83090 : out of range
Severe: rms_fgdepar=459.7195, expected range: 0.0000 366.6153
Severe: avg_pge=0.8497, expected range: -1.0440 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 47662 : out of range
Severe: rms_fgdepar=724.0181, expected range: 0.0000 163.5355
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 61995 : out of range
Severe: rms_fgdepar=1172.6191, expected range: 0.0000 167.3282
Severe: avg_pge=0.9475, expected range: -0.4002 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 67157 : out of range
Severe: rms_fgdepar=438.7820, expected range: 0.0000 221.0494
Severe: avg_pge=0.8555, expected range: -0.8742 0.7500
MANUAL LAND SYNOP RH2M (%) 63962 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=46.6217, expected range: 0.0000 20.8377
Severe: avg_pge=0.9934, expected range: -0.0845 0.0996
MANUAL LAND SYNOP RH2M (%) 41746 : out of range
Severe: rms_fgdepar=35.5031, expected range: 0.0000 24.6521
Severe: avg_pge=0.8550, expected range: -0.5033 0.5625
MANUAL LAND SYNOP RH2M (%) 40768 : out of range
Severe: rms_fgdepar=17.2850, expected range: 0.0000 5.5949
BUFR LAND SYNOP RH2M (%) 33173 : out of range
Severe: rms_fgdepar=24.8672, expected range: 0.0000 13.7564
BUFR LAND SYNOP RH2M (%) 33288 : out of range
Severe: rms_fgdepar=28.3199, expected range: 0.0000 8.9058
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) 41064 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=800.7805, expected range: -241.9350 359.0225
Severely_persistent: avg_pge=0.9176, expected range: -0.9399 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) ATVK : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9100, expected range: -0.3403 0.7500
SHIP SURFACE PRESSURE (PA) 9V9498 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8645, expected range: -1.1608 0.7500
SHIP WIND VECTOR DIFF (M/S) VRCS2 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8746, expected range: 0.3261 0.7500
SHIP WIND VECTOR DIFF (M/S) VRPJ6 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8213, expected range: -0.3953 0.7500
SHIP WIND VECTOR DIFF (M/S) UDKG : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8873, expected range: -0.3518 0.7500
ABBREVIATED SHIP WIND VECTOR DIFF (M/S) V7PQ5 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=25.2177, expected range: 0.0000 20.3115
Severely_persistent: avg_pge=0.9370, expected range: -0.0948 0.7500
SHIP SURFACE PRESSURE (PA) TBWUK50 : out of range
Severe: rms_fgdepar=810.1756, expected range: 0.0000 321.4084
SHIP SURFACE PRESSURE (PA) D5HF2 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8402, expected range: -0.1118 0.7500
SHIP SURFACE PRESSURE (PA) MAOR6 : out of range
Severe: rms_fgdepar=515.3197, expected range: 0.0000 227.5990
Severe: avg_pge=0.8726, expected range: -0.5602 0.7500
SHIP SURFACE PRESSURE (PA) PCJF : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8751, expected range: -0.9660 0.7500
SHIP SURFACE PRESSURE (PA) UDKG : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8184, expected range: -1.0012 0.7500
SHIP SURFACE PRESSURE (PA) PHEO : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=894.0990, expected range: 0.0000 343.8632
Severe: avg_pge=0.9313, expected range: -0.9708 0.7500
SHIP WIND VECTOR DIFF (M/S) DIXJ2 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9127, expected range: -1.3693 0.7500
ABBREVIATED SHIP SURFACE PRESSURE (PA) V7PQ5 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8247, expected range: -0.1523 0.7500
ABBREVIATED SHIP SURFACE PRESSURE (PA) WDJ8729 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8193, expected range: -1.2203 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 2601625 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8882, expected range: -1.5286 0.7500
MOORED BUOYS SURFACE PRESSURE (PA) 6101001 : out of range
Severe: avg_pge=0.8930, expected range: -0.4964 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4101702 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=637.1644, expected range: 0.0000 102.4653
Severe: avg_pge=0.9151, expected range: -0.2038 0.2537
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801612 : out of range
Severe: rms_fgdepar=491.8901, expected range: 0.0000 444.2912
Severe: avg_pge=0.8845, expected range: -0.9455 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 3401556 : out of range
Severe: rms_fgdepar=448.3383, expected range: 0.0000 100.4059
Severe: avg_pge=0.8499, expected range: -0.1304 0.1533
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Considerable: avg_biascorr=15.3623, expected range: -6.6414 7.9004
Slight: obs_number=8705.0000, expected range: 9001.3780 10151.7649
metar
METAR SURFACE PRESSURE (PA) RJTT : out of range
Severe: rms_fgdepar=393.6690, expected range: 0.0000 201.4131
snow
AUTOMATIC LAND SYNOP SNOW (CM) : out of range
14 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=183.7090, expected range: -3.1331 4.3728
Slight: avg_fgdepar=-10.4778, expected range: -8.4819 7.2695
MANUAL LAND SYNOP SNOW (CM) : out of range
4 times in the last 10 days for at least one item
Slight: avg_fgdepar=-56.4294, expected range: -35.4788 21.4177
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=1548.0000, expected range: 1819.1003 2097.4553
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=78.0000, expected range: 63.5595 68.9270
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 68927 : out of range
Severe: rms_fgdepar=8.8532, expected range: 0.0000 3.3288
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8257, expected range: 0.6628 0.9053
MANUAL LAND SYNOP 2M TEMPERATURE (K) 87688 : out of range
Severe: rms_fgdepar=8.7616, expected range: 0.0000 3.5514
METAR 2M TEMPERATURE (K) OIGK : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8141, expected range: 0.3736 0.9175
BUFR LAND SYNOP 2M TEMPERATURE (K) 89507 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8598, expected range: 0.0777 1.0510
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8283, expected range: 0.6551 0.9115
rh2m
AUTOMATIC LAND SYNOP RH2M (%) 85432 : out of range
Severe: rms_fgdepar=19.9895, expected range: 0.0000 10.0113
MANUAL LAND SYNOP RH2M (%) 65585 : out of range
Severe: rms_fgdepar=24.8062, expected range: 0.0000 13.3337
MANUAL LAND SYNOP RH2M (%) 20087 : out of range
Severe: rms_fgdepar=26.3901, expected range: 0.0000 14.3481
METAR RH2M (%) SCCF : out of range
Severe: rms_fgdepar=21.6429, expected range: 0.0000 11.1439