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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-14 12:00

iasi
METOP-A/IASI RADIANCES (72 channels affected) : out of range
Severe: obs_number=103880.0000, expected range: 115654.0340 129771.0694
airs
AQUA/AIRS RADIANCES CHANNEL 1142 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0152, expected range: -0.1172 -0.0321
gpsro
METOP-A/GRAS RISING (22 impact heights affected) : out of range
Slight: obs_number=1790.0000, expected range: 1858.2983 2485.9795
Atmospheric Motion Vector
HIMAWARI-8 AMV CLOUDY WV2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-60 : out of range
Considerable: obs_number=4237.0000, expected range: 1880.1235 3582.8765
scatt
METOP-A/ASCAT WIND VECTOR DIFF (M/S) : out of range
Considerable: obs_number=28436.0000, expected range: 31383.3002 37241.0156
Radiosondes
All HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) ALL LAYERS WMO BLOCK 63 : all data missing
Severely_persistent: obs_number=0, expected range: 84.72 148.88
LAND TEMP WIND VECTOR DIFF (M/S) 48615 (3 pressure layers affected) : out of range
Severe: rms_fgdepar=18.1918, expected range: 1.2326 8.3902
LAND TEMP WIND VECTOR DIFF (M/S) 82022 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=35.9992, expected range: 0.8216 5.3096
Severe: avg_pge=0.9298, expected range: -0.3642 0.4870
LAND TEMP WIND VECTOR DIFF (M/S) 31873 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=29.6449, expected range: 0.0000 9.3739
Severe: avg_pge=0.8991, expected range: -0.5441 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 48615 (2 pressure layers affected) : out of range
Severe: avg_pge=0.8253, expected range: -0.6761 0.7500
LAND TEMP TEMPERATURE (K) 48615 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=6.5747, expected range: 0.1366 2.5565
LAND TEMP TEMPERATURE (K) 23955 PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8729, expected range: -0.9702 0.7500
LAND TEMP TEMPERATURE (K) 31873 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=8.1053, expected range: 0.0000 2.5018
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 85586 (2 pressure layers af : out of range
Severe: rms_fgdepar=15.1230, expected range: 0.0000 6.6445
amdar
WIGOS AMDAR TEMPERATURE (K) 3KEUIRRA (2 pressure layers affected) : out of range
Severe: rms_fgdepar=7.8983, expected range: 0.0000 1.6393
Severe: avg_pge=0.8657, expected range: -0.0991 0.1290
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10356 PRESSURE LAYER 600-900 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8066, expected range: -0.6417 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10629 PRESSURE LAYER 600-900 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8220, expected range: -0.6572 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10339 PRESSURE LAYER 600-900 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8041, expected range: -0.6319 0.7500
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 82022 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=35.8060, expected range: 0.0000 6.8517
Severe: avg_pge=0.9276, expected range: -0.3881 0.5160
LAND PILOT WIND VECTOR DIFF (M/S) 48615 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=16.9919, expected range: 0.0000 7.3206
Severe: avg_pge=0.8608, expected range: -0.8197 0.7500
synop
MANUAL LAND SYNOP RH2M (%) 42174 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8102, expected range: -1.6623 0.7500
MANUAL LAND SYNOP RH2M (%) 42177 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8421, expected range: -1.5204 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 78896 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9088, expected range: 0.2909 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 66460 : out of range
Severe: rms_fgdepar=30.9134, expected range: 0.0000 6.5445
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40631 : out of range
Severe: rms_fgdepar=394.3860, expected range: 0.0000 196.7557
Severe: avg_pge=0.8670, expected range: -0.8384 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86255 : out of range
Severe: rms_fgdepar=322.7611, expected range: 0.0000 166.7557
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 78706 : out of range
Severe: rms_fgdepar=664.5910, expected range: 0.0000 318.9050
MANUAL LAND SYNOP RH2M (%) 87097 : out of range
Severe: rms_fgdepar=31.9659, expected range: 0.0000 16.2415
MANUAL LAND SYNOP RH2M (%) 35108 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9902, expected range: -1.6750 0.7500
MANUAL LAND SYNOP RH2M (%) 83768 : out of range
Severe: rms_fgdepar=34.3249, expected range: 0.0000 14.9015
MANUAL LAND SYNOP RH2M (%) 60549 : out of range
Severe: rms_fgdepar=22.3702, expected range: 0.0000 11.0221
MANUAL LAND SYNOP Z (M) 38725 : out of range
Severe: avg_pge=0.8726, expected range: -0.2294 0.2642
MANUAL LAND SYNOP Z (M) 38869 : out of range
Severe: avg_pge=0.9693, expected range: -0.5123 0.6311
BUFR LAND SYNOP SURFACE PRESSURE (PA) 70414 : out of range
Severe: rms_fgdepar=333.4663, expected range: 0.0000 140.3785
Severe: avg_pge=0.8308, expected range: -0.1397 0.1572
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30637 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=701.1108, expected range: -371.7252 555.4409
Severe: avg_pge=0.9124, expected range: -1.2424 0.7500
ship
SHIP SURFACE PRESSURE (PA) 9V9450 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8258, expected range: -0.3224 0.7500
SHIP SURFACE PRESSURE (PA) 9HA4800 : out of range
Severe: avg_pge=0.9144, expected range: -0.9999 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3851 : out of range
Severe: rms_fgdepar=411.5293, expected range: 0.0000 345.7920
Severe: avg_pge=0.8093, expected range: -0.8368 0.7500
SHIP SURFACE PRESSURE (PA) VRDJ3 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9106, expected range: -0.9754 0.7500
SHIP SURFACE PRESSURE (PA) S6LT3 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8544, expected range: -0.8451 0.7500
SHIP SURFACE PRESSURE (PA) VRIZ5 : out of range
Severe: rms_fgdepar=630.4219, expected range: 0.0000 542.8187
Severe: avg_pge=0.9080, expected range: -0.8268 0.7500
SHIP SURFACE PRESSURE (PA) 3FMV6 : out of range
Severe: avg_pge=0.8762, expected range: -1.1030 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3047 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8253, expected range: -1.0082 0.7500
SHIP SURFACE PRESSURE (PA) LAIG7 : out of range
Severe: avg_pge=0.8203, expected range: -1.0601 0.7500
buoy
MOORED BUOYS SURFACE PRESSURE (PA) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=122.0000, expected range: 88.4826 104.2233
DRIFTING BUOYS SURFACE PRESSURE (PA) 7401507 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8451, expected range: -0.2187 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6203702 : out of range
Severe: avg_pge=0.8391, expected range: -0.5439 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 3301508 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=532.7837, expected range: 0.0000 282.4511
Severe: avg_pge=0.8840, expected range: -0.7567 0.7500
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=0.3143, expected range: -0.0369 0.0309
Severely_persistent: rms_fgdepar=0.7928, expected range: -0.1010 0.1279
t2m
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8315, expected range: -0.3402 1.3081
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8004, expected range: 0.0986 1.2577
MANUAL LAND SYNOP 2M TEMPERATURE (K) 64708 : out of range
Severe: rms_fgdepar=7.2650, expected range: 0.0000 2.8598
METAR 2M TEMPERATURE (K) PAEI : out of range
Severe: rms_fgdepar=11.5829, expected range: 0.0000 4.8458
METAR 2M TEMPERATURE (K) EFRO : out of range
Severe: rms_fgdepar=9.2702, expected range: 0.0000 2.6940
METAR 2M TEMPERATURE (K) TJBQ : out of range
Severe: rms_fgdepar=7.3304, expected range: 0.0000 3.8973
METAR 2M TEMPERATURE (K) KRDR : out of range
Severe: rms_fgdepar=13.0401, expected range: 0.0000 4.0261
LAND TEMP 2M TEMPERATURE (K) 72582 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8050, expected range: -0.3532 1.1606
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8627, expected range: 0.2111 1.1238
rh2m
MANUAL LAND SYNOP RH2M (%) 89055 : out of range
Severe: rms_fgdepar=30.2311, expected range: 0.0000 14.9897