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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-07 12:00

resat
NOAA-19/SBUV OZONE, TOP PRESSURE LAYER 0-1 (HPA) : out of range
Slight: obs_number=1843.0000, expected range: 2011.1031 3546.2772
Radiosondes
LAND TEMP WIND VECTOR DIFF (M/S) 26702 PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=25.0778, expected range: 0.0000 7.1031
Severe: avg_pge=0.8846, expected range: -0.3856 0.4959
LAND TEMP WIND VECTOR DIFF (M/S) 54161 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.9039, expected range: -0.9317 0.7500
LAND TEMP TEMPERATURE (K) 20674 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=6.3116, expected range: 0.0013 2.5250
LAND TEMP TEMPERATURE (K) 24688 PRESSURE LAYER 900-1200 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9277, expected range: -1.5922 0.7500
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected : out of range
Severe: obs_number=383.0000, expected range: 265.4232 317.5768
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
Considerable: obs_number=263.0000, expected range: 160.8034 240.8216
amdar
WIGOS AMDAR TEMPERATURE (K) EEXKJFJA (4 pressure layers affected) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=10.7520, expected range: -5.7688 7.3918
WIGOS AMDAR TEMPERATURE (K) EEXKJFJA (3 pressure layers affected) : out of range
Severe: avg_pge=0.9052, expected range: -1.3575 0.7500
WIGOS AMDAR TEMPERATURE (K) MZXYCOZA PRESSURE LAYER 0-300 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8887, expected range: -1.8455 0.7500
synop
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8654, expected range: -1.3322 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83844 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8241, expected range: -0.6191 0.7500
BUFR LAND SYNOP RH2M (%) 81737 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9990, expected range: 0.5689 0.7500
BUFR LAND SYNOP RH2M (%) 81788 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=1.0000, expected range: -1.0415 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27415 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9287, expected range: -0.0710 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 78896 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8225, expected range: -0.9549 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 41244 : out of range
Severe: rms_fgdepar=23.6099, expected range: 0.0000 6.9605
AUTOMATIC LAND SYNOP RH2M (%) 68647 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=34.2544, expected range: 0.0000 15.3449
MANUAL LAND SYNOP RH2M (%) 62014 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9990, expected range: -1.0859 0.7500
MANUAL LAND SYNOP RH2M (%) 62016 : out of range
Severe: avg_pge=0.8463, expected range: -0.5783 0.7217
MANUAL LAND SYNOP RH2M (%) 67327 : out of range
Severe: rms_fgdepar=38.4717, expected range: 0.0000 18.6644
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40800 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=315.4581, expected range: 0.0000 153.2745
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42812 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8287, expected range: -1.0507 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76683 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=308.8461, expected range: 0.0000 95.2127
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40657 : out of range
Severe: rms_fgdepar=875.0704, expected range: 0.0000 246.0488
Severe: avg_pge=0.9321, expected range: -0.5654 0.7308
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42948 : out of range
Severe: avg_pge=0.8555, expected range: -1.0161 0.7500
BUFR LAND SYNOP RH2M (%) 95570 : out of range
Severe: rms_fgdepar=50.6579, expected range: -12.8394 19.1722
Severe: avg_pge=0.9936, expected range: -0.0196 0.0274
BUFR LAND SYNOP RH2M (%) 40361 : out of range
Severe: rms_fgdepar=18.0852, expected range: 0.0000 9.9783
BUFR LAND SYNOP RH2M (%) 72327 : out of range
Severe: rms_fgdepar=17.7239, expected range: 0.0000 8.9471
BUFR LAND SYNOP RH2M (%) 94549 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=32.0173, expected range: 0.0000 24.1095
Severe: avg_pge=0.9160, expected range: -1.0802 0.7500
BUFR LAND SYNOP RH2M (%) 95369 : out of range
Severe: rms_fgdepar=31.4086, expected range: 0.0000 16.6843
BUFR LAND SYNOP SURFACE PRESSURE (PA) 34691 : out of range
Severe: avg_pge=0.8553, expected range: -0.9349 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24763 : out of range
Severe: avg_pge=0.8513, expected range: -0.6245 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 93498 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8313, expected range: -1.2554 0.7500
ship
SHIP SURFACE PRESSURE (PA) 9V9450 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8395, expected range: -0.9360 0.7500
SHIP SURFACE PRESSURE (PA) OXSQ2 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8690, expected range: -1.3203 0.7500
SHIP WIND VECTOR DIFF (M/S) VRGE7 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8615, expected range: -0.2660 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8871, expected range: 0.1285 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3731 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9488, expected range: -1.0890 0.7500
SHIP SURFACE PRESSURE (PA) OWIZ2 : out of range
Severe: avg_pge=0.8986, expected range: -1.2604 0.7500
SHIP SURFACE PRESSURE (PA) ZCDD6 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8019, expected range: -1.3030 0.7500
SHIP SURFACE PRESSURE (PA) HPYE : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=322.6302, expected range: 0.0000 201.7276
Severe: avg_pge=0.8056, expected range: -0.7956 0.7500
SHIP WIND VECTOR DIFF (M/S) VRRD2 : out of range
Severe: rms_fgdepar=15.1928, expected range: 0.0000 11.4113
Severe: avg_pge=0.8145, expected range: -0.5915 0.7500
ABBREVIATED SHIP SURFACE PRESSURE (PA) VRRN8 : out of range
Severe: rms_fgdepar=1138.6191, expected range: 0.0000 360.2830
Severe: avg_pge=0.9422, expected range: -0.9356 0.7500
ABBREVIATED SHIP WIND VECTOR DIFF (M/S) VRRN8 : out of range
Severe: rms_fgdepar=15.1302, expected range: 0.0000 11.7401
Severe: avg_pge=0.9035, expected range: -0.5178 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 6401561 : out of range
Severe: rms_fgdepar=336.3575, expected range: 0.0000 90.2558
DRIFTING BUOYS SURFACE PRESSURE (PA) 1301603 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=356.3199, expected range: 0.0000 131.8553
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701566 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8207, expected range: -0.9214 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4400777 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=349.8865, expected range: 0.0000 110.5063
DRIFTING BUOYS SURFACE PRESSURE (PA) 4101708 : out of range
Severe: rms_fgdepar=459.9320, expected range: 0.0000 161.7801
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701529 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=438.9387, expected range: 0.0000 137.6867
snow
AUTOMATIC LAND SYNOP SNOW (CM) : out of range
11 times in the last 10 days for at least one item
Severely_persistent: obs_number=603.0000, expected range: 254.1413 349.2301
BUFR LAND SYNOP SNOW (CM) : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0359, expected range: -0.0015 0.0012
Severely_persistent: avg_fgdepar=-0.0505, expected range: -0.0037 0.0032
Severely_persistent: rms_fgdepar=0.2366, expected range: -0.0142 0.0178
Severely_persistent: rms_fgdepar=0.0966, expected range: -0.0118 0.0139
MANUAL LAND SYNOP SNOW (CM) : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=0.2463, expected range: -0.0095 0.0111
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=41.0000, expected range: 70.8234 99.2307
MANUAL LAND SYNOP 2M TEMPERATURE (K) 28493 : out of range
Severe: rms_fgdepar=7.3508, expected range: 0.0000 3.2278
MANUAL LAND SYNOP 2M TEMPERATURE (K) 28593 : out of range
Severe: rms_fgdepar=7.3017, expected range: 0.0000 4.0089
MANUAL LAND SYNOP 2M TEMPERATURE (K) 28434 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.3039, expected range: 0.0000 4.3955
MANUAL LAND SYNOP 2M TEMPERATURE (K) 64756 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=11.0875, expected range: 0.0000 5.0621
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24076 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.5687, expected range: 0.0000 3.2067
MANUAL LAND SYNOP 2M TEMPERATURE (K) 22676 : out of range
Severe: rms_fgdepar=8.4796, expected range: 0.0000 2.3267
METAR 2M TEMPERATURE (K) PAEC : out of range
Severe: rms_fgdepar=7.8022, expected range: 0.0000 3.8235
METAR 2M TEMPERATURE (K) EGGD : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.7898, expected range: 0.0000 2.7054
METAR 2M TEMPERATURE (K) VTPP : out of range
Severe: rms_fgdepar=8.0234, expected range: 1.0581 4.0276
LAND TEMP 2M TEMPERATURE (K) 74006 : out of range
Severe: rms_fgdepar=9.9042, expected range: 0.0000 6.6927
Severe: avg_est_pge=0.8278, expected range: -0.3132 0.6566
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8321, expected range: -0.3737 1.2289
BUFR LAND SYNOP 2M TEMPERATURE (K) 27415 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8088, expected range: 0.4791 0.9700
MANUAL LAND SYNOP 2M TEMPERATURE (K) : out of range
1 times in the last 10 days for at least one item
Considerable: rms_fgdepar=4.0823, expected range: 0.4020 2.7721
rh2m
BUFR LAND SYNOP RH2M (%) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=172.0000, expected range: 189.9231 199.0213