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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-22 12:00

iasi
All METOP-A/IASI RADIANCES ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 0.00 25995.93
airs
AQUA/AIRS RADIANCES CHANNEL 1740 : out of range
Considerable: avg_biascorr=0.6666, expected range: 0.5539 0.6411
mhs
ALLSKY METOP-A/MHS RADIANCES (5 channels affected) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=10307.0000, expected range: 22765.8807 34682.0050
ALLSKY METOP-A/MHS RADIANCES CHANNEL 5 : out of range
3 times in the last 10 days for at least one item
Severe: avg_norm_fgdepar=-0.1195, expected range: -0.0476 0.0536
saphir
All ALLSKY SAPHIR RADIANCES ALL CHANNELS Global : all data missing
Severe: obs_number=0, expected range: 2179.67 22027.47
ssmis
DMSP-18/SSMIS RADIANCES (7 channels affected) : out of range
Severe: obs_number=21088.0000, expected range: 23124.4120 25667.0090
gpsro
All TERRASAR-X SETTING ALL HEIGHTS Global : all data missing
Severely_persistent: obs_number=0, expected range: 0.00 1516.89
All TANDEM-X RISING ALL HEIGHTS Global : all data missing
Severely_persistent: obs_number=0, expected range: 0.00 1135.45
Atmospheric Motion Vector
GOES-15/AMV IR1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Considerable: obs_number=734.0000, expected range: 56.9886 568.7892
GOES-16/AMV VIS1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Slight: obs_number=17076.0000, expected range: 17752.2024 23155.9087
Radiosondes
LAND TEMP TEMPERATURE (K) 23955 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=9.1868, expected range: 0.0000 2.6508
Severe: avg_pge=0.8904, expected range: -0.3304 0.4840
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 600-900 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=3.1729, expected range: 0.0000 1.4806
All HIGH RESO LAND TEMP TEMPERATURE (K) ALL LAYERS WMO BLOCK 22 : all data missing
Severe: obs_number=0, expected range: 0.00 283.85
amdar
WIGOS AMDAR WIND VECTOR DIFF (M/S) 53VLSLBA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8308, expected range: -0.9046 0.7500
WIGOS AMDAR WIND VECTOR DIFF (M/S) BTSX1DZA PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8287, expected range: -1.0861 0.7500
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86260 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9005, expected range: -1.1884 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42523 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8904, expected range: -0.5609 0.7500
MANUAL LAND SYNOP RH2M (%) 51777 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9992, expected range: -1.9818 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27415 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9350, expected range: -0.0113 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=1.0000, expected range: -1.1704 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 47805 : out of range
Severe: rms_fgdepar=307.3855, expected range: 0.0000 124.6942
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 37801 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=449.4298, expected range: 0.0000 352.4829
Severe: avg_pge=0.8236, expected range: -0.9058 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42812 : out of range
Severe: rms_fgdepar=511.8179, expected range: 0.0000 305.8849
Severe: avg_pge=0.8627, expected range: -1.0142 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42143 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8655, expected range: -1.3189 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83683 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=325.2136, expected range: 0.0000 180.4346
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 62393 : out of range
Severe: rms_fgdepar=353.5434, expected range: 0.0000 146.8377
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42468 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=420.8958, expected range: 0.0000 301.9780
Severe: avg_pge=0.8375, expected range: -1.0340 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43309 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8887, expected range: -0.3240 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43289 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8196, expected range: -1.3938 0.7500
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9525, expected range: -1.0949 0.7500
MANUAL LAND SYNOP RH2M (%) 35953 : out of range
Severe: rms_fgdepar=30.1605, expected range: 0.0000 16.5248
MANUAL LAND SYNOP RH2M (%) 43376 : out of range
Severe: rms_fgdepar=36.3907, expected range: 1.0851 18.2321
Severe: avg_pge=0.9906, expected range: -0.0027 0.0121
MANUAL LAND SYNOP RH2M (%) 35108 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8504, expected range: -1.0399 0.7500
MANUAL LAND SYNOP RH2M (%) 35849 : out of range
Severe: rms_fgdepar=31.9440, expected range: 0.0000 13.7307
BUFR LAND SYNOP RH2M (%) 27595 : out of range
Severe: rms_fgdepar=31.9069, expected range: 0.0000 15.3457
BUFR LAND SYNOP RH2M (%) 81788 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9728, expected range: -1.2208 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Slight: rms_fgdepar=89.5427, expected range: 35.9667 81.1400
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) 44058 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8165, expected range: 0.7114 0.7500
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 42013 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8668, expected range: -1.1407 0.7500
SHIP SURFACE PRESSURE (PA) 9V2779 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8947, expected range: -0.7517 0.7500
SHIP SURFACE PRESSURE (PA) D5KQ3 : out of range
Severe: rms_fgdepar=462.3691, expected range: 0.0000 222.1486
SHIP WIND VECTOR DIFF (M/S) C6DQ5 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9109, expected range: -0.6565 0.7500
buoy
DRIBU WIND VECTOR DIFF (M/S) 53056 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9233, expected range: 0.7154 0.7500
MOORED BUOYS WIND VECTOR DIFF (M/S) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=249.0000, expected range: 178.3271 209.2729
MOORED BUOYS SURFACE PRESSURE (PA) 6101001 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8294, expected range: -0.6189 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701536 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9018, expected range: 0.1302 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701535 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8918, expected range: -0.0386 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 7401507 : out of range
Severe: avg_pge=0.8600, expected range: -0.8350 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 3301508 : out of range
Severe: rms_fgdepar=351.1134, expected range: 0.0000 145.9806
Severe: avg_pge=0.8451, expected range: -0.5202 0.6292
DRIFTING BUOYS SURFACE PRESSURE (PA) 6203579 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=546.4023, expected range: 0.0000 159.8026
Severe: avg_pge=0.8965, expected range: -0.5272 0.7210
metar
AUTOMATIC METAR SURFACE PRESSURE (PA) KLXT : out of range
Severe: rms_fgdepar=552.9730, expected range: 0.0000 114.3632
snow
MANUAL LAND SYNOP SNOW (CM) : out of range
1 times in the last 10 days for at least one item
Slight: avg_fgdepar=-66.6641, expected range: -38.8357 22.9428
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8595, expected range: -0.2137 1.3642
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 01366 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.0969, expected range: 0.0000 2.2216
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 93796 : out of range
Severe: rms_fgdepar=7.3523, expected range: 0.0000 3.7732
MANUAL LAND SYNOP 2M TEMPERATURE (K) 67861 : out of range
Severe: rms_fgdepar=14.3415, expected range: 0.0000 2.1817
Severe: avg_est_pge=0.8414, expected range: -0.0014 0.0018
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8543, expected range: -0.2771 1.3822
MANUAL LAND SYNOP 2M TEMPERATURE (K) 60725 : out of range
Severe: rms_fgdepar=7.5914, expected range: 0.0000 2.8649
MANUAL LAND SYNOP 2M TEMPERATURE (K) 35085 : out of range
Severe: rms_fgdepar=8.4433, expected range: 0.0000 4.0011
MANUAL LAND SYNOP 2M TEMPERATURE (K) 65536 : out of range
Severe: rms_fgdepar=8.4828, expected range: 0.0000 4.2741
MANUAL LAND SYNOP 2M TEMPERATURE (K) 35357 : out of range
Severe: rms_fgdepar=9.4687, expected range: 0.0000 4.5582
MANUAL LAND SYNOP 2M TEMPERATURE (K) 28797 : out of range
Severe: rms_fgdepar=7.5457, expected range: 0.0000 4.0417
MANUAL LAND SYNOP 2M TEMPERATURE (K) 35188 : out of range
Severe: rms_fgdepar=7.8790, expected range: 0.0000 4.1895
MANUAL LAND SYNOP 2M TEMPERATURE (K) 28698 : out of range
Severe: rms_fgdepar=8.7716, expected range: 0.0000 4.5637
METAR 2M TEMPERATURE (K) OIGK : out of range
Severe: avg_est_pge=0.8265, expected range: 0.2472 1.0104
METAR 2M TEMPERATURE (K) LIVR : out of range
Severe: rms_fgdepar=9.2169, expected range: 0.0000 4.8819
METAR 2M TEMPERATURE (K) MSSS : out of range
Severe: rms_fgdepar=8.2058, expected range: 0.0664 4.5437
METAR 2M TEMPERATURE (K) KNKT : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.1802, expected range: 0.0000 4.6205
METAR 2M TEMPERATURE (K) KNZY : out of range
Severe: rms_fgdepar=9.3313, expected range: 0.5184 2.3998
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=0.8082, expected range: -0.3954 1.3311
BUFR LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8578, expected range: -0.1997 1.3524
rh2m
MANUAL LAND SYNOP RH2M (%) 23112 : out of range
Severe: rms_fgdepar=26.3336, expected range: 0.0000 14.2361