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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-13 12:00

mhs
ALLSKY NOAA-19/MHS RADIANCES (5 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=11122.0000, expected range: 26868.0212 32774.2491
ALLSKY NOAA-19/MHS RADIANCES CHANNEL 4 : out of range
Slight: stdev_norm_fgdepar=0.6398, expected range: 0.6521 0.7296
Radiosondes
LAND TEMP WIND VECTOR DIFF (M/S) 31873 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.4154, expected range: 0.0000 10.1093
Severe: avg_pge=0.8178, expected range: -0.4889 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 36096 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.0363, expected range: 0.0000 6.7162
LAND TEMP TEMPERATURE (K) 24641 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=12.7652, expected range: 0.0318 3.1743
Severe: avg_pge=0.9405, expected range: -0.3246 0.7500
HIGH RESO LAND TEMP Q (G/KG) 60656 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=2.1338, expected range: 0.0000 1.1100
LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
Considerable: avg_biascorr=-0.5220, expected range: -0.3490 -0.0491
amdar
WIGOS AMDAR TEMPERATURE (K) SL0012 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=6.6223, expected range: 0.0000 1.6940
WIGOS AMDAR TEMPERATURE (K) SL0123 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=6.1542, expected range: 0.0000 2.8171
Severe: avg_pge=0.8654, expected range: -0.8429 0.7500
WIGOS AMDAR TEMPERATURE (K) SL0077 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=6.0030, expected range: 0.0000 2.5870
WIGOS AMDAR WIND VECTOR DIFF (M/S) UWMIR3JA PRESSURE LAYER 300-600 (HP : out of range
Severe: rms_fgdepar=16.7589, expected range: 0.0000 6.8849
WIGOS AMDAR WIND VECTOR DIFF (M/S) SL0012 PRESSURE LAYER 900-1200 (HPA : out of range
Severe: rms_fgdepar=15.5239, expected range: 0.0000 7.9920
airep
AIREP WIND VECTOR DIFF (M/S) AAL265 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.1863, expected range: 0.0000 7.2969
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10629 PRESSURE LAYER 600-900 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8698, expected range: -0.7148 0.7500
synop
BUFR LAND SYNOP RH2M (%) 81788 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9954, expected range: -0.1060 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 72220 : out of range
Severe: rms_fgdepar=17.8550, expected range: 0.0000 10.0634
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 17090 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=348.4649, expected range: 0.0000 120.7346
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 62212 : out of range
Severe: avg_pge=0.8943, expected range: -0.6766 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76683 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=302.3558, expected range: 0.0000 106.0301
BUFR LAND SYNOP RH2M (%) 08272 : out of range
Severe: rms_fgdepar=15.0670, expected range: 0.0000 8.0288
BUFR LAND SYNOP RH2M (%) 23114 : out of range
Severe: rms_fgdepar=41.5423, expected range: 0.0000 18.7127
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48455 : out of range
Severe: rms_fgdepar=391.9667, expected range: 0.0000 214.2357
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71336 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=402.7998, expected range: 0.0000 274.2875
Severe: avg_pge=0.8790, expected range: -0.8958 0.7500
ship
SHIP WIND VECTOR DIFF (M/S) VRGE7 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8948, expected range: 0.0417 0.7500
SHIP WIND VECTOR DIFF (M/S) ONFZ : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9233, expected range: -0.1820 0.7500
SHIP SURFACE PRESSURE (PA) 9V9450 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8450, expected range: -0.6981 0.7500
SHIP SURFACE PRESSURE (PA) VRGE7 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8157, expected range: -0.8878 0.7500
SHIP WIND VECTOR DIFF (M/S) VRIB3 : out of range
Severe: avg_pge=0.8722, expected range: -0.7853 0.7500
SHIP SURFACE PRESSURE (PA) V7NG4 : out of range
Severe: avg_pge=0.9306, expected range: -1.5965 0.7500
SHIP SURFACE PRESSURE (PA) VRKS4 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9187, expected range: -1.0200 0.7500
SHIP SURFACE PRESSURE (PA) C6CU6 : out of range
Severe: rms_fgdepar=1163.3483, expected range: 0.0000 192.7518
Severe: avg_pge=0.9396, expected range: -0.8273 0.7500
buoy
MOORED BUOYS SURFACE PRESSURE (PA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=122.0000, expected range: 87.3492 105.0952
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=47.0000, expected range: 58.8312 72.1974
DRIFTING BUOYS SURFACE PRESSURE (PA) 2101634 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8841, expected range: -1.0169 0.7500
metar
METAR SURFACE PRESSURE (PA) OIGK : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8431, expected range: -0.9784 0.7500
METAR SURFACE PRESSURE (PA) HTMT : out of range
Severe: rms_fgdepar=449.9468, expected range: 0.0000 156.2127
snow
BUFR LAND SYNOP SNOW (CM) : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.3279, expected range: -0.0358 0.0302
Severely_persistent: rms_fgdepar=0.8098, expected range: -0.0990 0.1245
t2m
MANUAL LAND SYNOP 2M TEMPERATURE (K) : out of range
10 times in the last 10 days for at least one item
Severely_persistent: obs_number=125.0000, expected range: 95.3524 104.2840
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8488, expected range: -0.3637 1.2928
MANUAL LAND SYNOP 2M TEMPERATURE (K) 31011 : out of range
Severe: rms_fgdepar=8.4714, expected range: 0.0000 4.3421
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24261 : out of range
Severe: rms_fgdepar=9.8751, expected range: 0.0000 4.1868
MANUAL LAND SYNOP 2M TEMPERATURE (K) 72564 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.0659, expected range: 0.0000 5.1054
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24266 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=9.1862, expected range: 0.0000 4.8043
MANUAL LAND SYNOP 2M TEMPERATURE (K) 41738 : out of range
Severe: rms_fgdepar=7.2292, expected range: 0.0000 4.0483
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24329 : out of range
Severe: rms_fgdepar=9.8686, expected range: 0.0000 5.3675
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24449 : out of range
Severe: rms_fgdepar=7.7182, expected range: 0.0000 4.1466
METAR 2M TEMPERATURE (K) KNBG : out of range
Severe: rms_fgdepar=8.0199, expected range: 0.9075 4.3910
METAR 2M TEMPERATURE (K) KCYS : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=11.4482, expected range: 0.8246 6.0758
LAND TEMP 2M TEMPERATURE (K) 72582 : out of range
Severe: avg_est_pge=0.8179, expected range: -0.3674 1.1414
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8332, expected range: 0.2122 1.1056
BUFR LAND SYNOP 2M TEMPERATURE (K) 86989 : out of range
Severe: rms_fgdepar=7.7451, expected range: 0.0000 4.1557
rh2m
MANUAL LAND SYNOP RH2M (%) 07749 : out of range
Severe: rms_fgdepar=34.8116, expected range: 0.0000 19.0354