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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

amsua
AQUA/AMSUA RADIANCES CHANNEL 14 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0057, expected range: 0.0024 0.0045
Severely_persistent: avg_biascorr=0.0058, expected range: 0.0024 0.0040
Severely_persistent: avg_biascorr=0.0057, expected range: 0.0023 0.0039
METOP-A/AMSUA RADIANCES (10 channels affected) : out of range
1 times in the last 10 days for at least one item
Slight: obs_number=3796.0000, expected range: 5148.6924 16307.9187
mhs
ALLSKY NOAA-19/MHS RADIANCES (5 channels affected) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=12505.0000, expected range: 25519.6660 34033.0708
Atmospheric Motion Vector
All NOAA-19/AVHRR IR WIND VECTOR DIFF (M/S) ALL LAYERS Global : all data missing
Severe: obs_number=0, expected range: 0.00 767.59
resat
AURA/OMI OZONE, TOP PRESSURE LAYER 0-1 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=3006.0000, expected range: 14342.6104 26479.7054
Considerable: avg_fgdepar=-3.1540, expected range: -1.6423 2.6279
Radiosondes
LAND TEMP TEMPERATURE (K) 43041 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=12.5781, expected range: 0.0000 5.1409
Severe: avg_pge=0.8061, expected range: -0.2271 0.3112
LAND TEMP TEMPERATURE (K) 26075 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=8.8198, expected range: 0.0000 5.9718
Severe: avg_pge=0.9093, expected range: -0.5202 0.7500
LAND TEMP TEMPERATURE (K) 38064 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=7.5215, expected range: 0.0000 3.1105
Severe: avg_pge=0.8528, expected range: -0.3968 0.5958
LAND TEMP TEMPERATURE (K) 32150 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=6.4475, expected range: 0.0000 3.3984
Severe: avg_pge=0.8877, expected range: -0.7758 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 25123 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=16.5087, expected range: 0.0000 9.0775
LAND TEMP WIND VECTOR DIFF (M/S) 91376 PRESSURE LAYER 900-1200 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=17.8824, expected range: 0.0000 7.5293
LAND TEMP Q (G/KG) 83779 PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=3.1619, expected range: 0.0000 1.0648
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
3 times in the last 10 days for at least one item
Severe: avg_biascorr=0.1171, expected range: 0.0518 0.0842
HIGH RESO LAND TEMP TEMPERATURE (K) (4 pressure layers affected) : out of range
Severe: obs_number=409.0000, expected range: 547.1622 633.5437
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 94998 PRESSURE LAYER 900-12 : out of range
Severe: rms_fgdepar=17.6015, expected range: 0.0000 8.0750
HIGH RESO LAND TEMP Q (G/KG) (4 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=290.0000, expected range: 373.4216 473.2450
HIGH RESO SEA TEMP Q (G/KG) PRESSURE LAYER 0-300 (HPA) : missing
Severe: obs_number=0.0000, expected range: 0.0000 200.3177
amdar
WIGOS AMDAR Q (G/KG) XWGY0OZA PRESSURE LAYER 900-1200 (HPA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9210, expected range: -1.0227 0.7500
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=633.0000, expected range: 823.2710 1571.6702
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 67083 PRESSURE LAYER 0-300 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8503, expected range: 0.0241 0.7500
LAND PILOT WIND VECTOR DIFF (M/S) 72469 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=15.3643, expected range: 0.0000 11.1246
Severe: avg_pge=0.8314, expected range: -0.2102 0.7500
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 68558 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8530, expected range: -0.8541 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=422.6154, expected range: 122.1951 250.4265
Severely_persistent: avg_biascorr=3.9344, expected range: -1.2340 1.3561
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48952 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8609, expected range: -1.6040 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 94620 : out of range
Severe: rms_fgdepar=47.6376, expected range: 0.0000 36.6897
Severe: avg_pge=0.8742, expected range: -0.9111 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 41244 : out of range
Severe: rms_fgdepar=33.1678, expected range: 0.0000 15.1348
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 68362 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=567.3990, expected range: 0.0000 97.0353
Severe: avg_pge=0.9151, expected range: -0.4397 0.6129
MANUAL LAND SYNOP RH2M (%) 76402 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=42.8425, expected range: 0.0000 26.0817
Severe: avg_pge=0.9799, expected range: -0.3334 0.3888
MANUAL LAND SYNOP RH2M (%) 94463 : out of range
Severe: rms_fgdepar=31.1512, expected range: 0.0000 14.7404
MANUAL LAND SYNOP RH2M (%) 53276 : out of range
Severe: rms_fgdepar=29.2455, expected range: 0.0000 14.1461
MANUAL LAND SYNOP RH2M (%) 42459 : out of range
Severe: avg_pge=0.8231, expected range: -0.5963 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83683 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=615.3543, expected range: 0.0000 331.4963
Severe: avg_pge=0.8935, expected range: -1.1940 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 32076 : out of range
Severe: rms_fgdepar=305.8071, expected range: 0.0000 123.6858
Severe: avg_pge=0.8089, expected range: -0.1880 0.2349
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42078 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8525, expected range: 0.3674 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42488 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8081, expected range: -1.1198 0.7500
BUFR LAND SYNOP RH2M (%) 71660 : out of range
Severe: rms_fgdepar=38.0404, expected range: 0.0000 27.9669
Severe: avg_pge=0.9255, expected range: -0.0166 0.0256
BUFR LAND SYNOP RH2M (%) 71880 : out of range
Severe: rms_fgdepar=36.5560, expected range: 0.0000 26.7129
Severe: avg_pge=0.8897, expected range: -0.0072 0.0147
BUFR LAND SYNOP RH2M (%) 94781 : out of range
Severe: rms_fgdepar=47.3530, expected range: 0.0000 30.1530
Severe: avg_pge=0.9943, expected range: -0.0349 0.0459
BUFR LAND SYNOP RH2M (%) 94291 : out of range
Severe: avg_pge=0.8206, expected range: -0.1450 0.1779
BUFR LAND SYNOP RH2M (%) 72462 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=24.8479, expected range: 0.0000 10.9234
BUFR LAND SYNOP RH2M (%) 94463 : out of range
Severe: rms_fgdepar=31.4823, expected range: 0.0000 9.9551
BUFR LAND SYNOP RH2M (%) 95614 : out of range
Severe: rms_fgdepar=26.7257, expected range: 0.0000 13.3748
BUFR LAND SYNOP RH2M (%) 72565 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=52.7142, expected range: 0.0000 21.4159
BUFR LAND SYNOP RH2M (%) 72578 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=18.8821, expected range: 0.0000 4.2046
BUFR LAND SYNOP RH2M (%) 94439 : out of range
Severe: rms_fgdepar=51.1748, expected range: 0.0000 45.1386
Severe: avg_pge=0.9999, expected range: -0.0611 0.0859
BUFR LAND SYNOP SURFACE PRESSURE (PA) 21721 : out of range
Severe: rms_fgdepar=315.1791, expected range: 0.0000 122.4857
BUFR LAND SYNOP SURFACE PRESSURE (PA) 81982 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9487, expected range: -0.7174 0.7500
ship
SHIP WIND VECTOR DIFF (M/S) UDKG : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8890, expected range: -0.3535 0.7500
SHIP SURFACE PRESSURE (PA) 9V9498 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8772, expected range: -1.2088 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8282, expected range: 0.5639 0.7500
SHIP WIND VECTOR DIFF (M/S) DIXJ2 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9095, expected range: -1.3545 0.7500
SHIP WIND VECTOR DIFF (M/S) 9V5246 : out of range
Severe: avg_pge=0.9265, expected range: -0.7669 0.7500
SHIP SURFACE PRESSURE (PA) 9V9408 : out of range
Severe: avg_pge=0.8527, expected range: -0.9145 0.7500
SHIP SURFACE PRESSURE (PA) C6FM8 : out of range
Severe: rms_fgdepar=449.6876, expected range: 0.0000 264.1915
Severe: avg_pge=0.8018, expected range: -0.5601 0.7500
SHIP SURFACE PRESSURE (PA) 9HJB9 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8228, expected range: -1.3717 0.7500
buoy
DRIBU WIND VECTOR DIFF (M/S) 23451 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8681, expected range: -0.1877 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2601625 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8969, expected range: -1.5203 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701507 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8515, expected range: -0.7636 0.7500
MOORED BUOYS SURFACE PRESSURE (PA) 6101001 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8528, expected range: -0.4964 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
2 times in the last 10 days for at least one item
Slight: obs_number=8682.0000, expected range: 8952.3906 10184.6649
metar
METAR SURFACE PRESSURE (PA) RJAA : out of range
Severe: rms_fgdepar=890.4194, expected range: 0.0000 173.2521
Severe: avg_pge=0.8242, expected range: -0.0735 0.0995
METAR SURFACE PRESSURE (PA) FZNA : out of range
Severe: rms_fgdepar=440.4645, expected range: 0.0000 225.3732
METAR SURFACE PRESSURE (PA) UBEE : out of range
Severe: rms_fgdepar=395.7510, expected range: 0.0000 182.8380
METAR SURFACE PRESSURE (PA) FNMO : out of range
Severe: rms_fgdepar=556.2095, expected range: 0.0000 428.9433
Severe: avg_pge=0.8362, expected range: -0.8385 0.7500
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8285, expected range: 0.6557 0.9192
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8236, expected range: 0.2186 1.1878
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8295, expected range: 0.6552 0.9117
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=78.0000, expected range: 63.5310 68.9690
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89799 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8231, expected range: 0.2704 1.0668
MANUAL LAND SYNOP 2M TEMPERATURE (K) 76402 : out of range
Severe: rms_fgdepar=8.6565, expected range: 0.0000 4.6706
MANUAL LAND SYNOP 2M TEMPERATURE (K) 68842 : out of range
Severe: rms_fgdepar=8.2947, expected range: 0.0000 4.0786
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89009 : out of range
Severe: avg_est_pge=0.8252, expected range: -0.0211 1.2032
MANUAL LAND SYNOP 2M TEMPERATURE (K) 84239 : out of range
Severe: rms_fgdepar=14.5899, expected range: 0.0000 5.0725
Severe: avg_est_pge=0.8049, expected range: -0.3077 0.7547
METAR 2M TEMPERATURE (K) KOLV : out of range
Severe: rms_fgdepar=8.8778, expected range: 0.0000 4.8317
LAND TEMP 2M TEMPERATURE (K) 68842 : out of range
Severe: rms_fgdepar=8.1237, expected range: 0.0000 4.4177
BUFR LAND SYNOP 2M TEMPERATURE (K) 89507 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8315, expected range: 0.0618 1.0606
rh2m
MANUAL LAND SYNOP RH2M (%) 20087 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=25.5726, expected range: 0.0000 14.2824
METAR RH2M (%) SCCF : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=23.0200, expected range: 0.0000 11.1827