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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-07-29 12:00

iasi
METOP-B IASI RADIANCES CHANNEL 1639 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1278, expected range: -0.0877 -0.0564
METOP-B IASI RADIANCES CHANNEL 1658 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0186, expected range: 0.0701 0.1071
METOP-B IASI RADIANCES CHANNEL 2889 : out of range
3 times in the last 10 days for at least one item
Considerable: avg_biascorr=-0.3429, expected range: -0.3162 -0.2722
cris
NOAA20 CRIS RADIANCES CHANNEL 989 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0462, expected range: 0.0665 0.0865
NOAA20 CRIS RADIANCES CHANNEL 1005 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0876, expected range: 0.1105 0.1219
mwhs2
FY-3C MWHS2 ALLSKY RADIANCES CHANNEL 7 : out of range
Considerable: stdev_norm_fgdepar=1.0771, expected range: 0.6060 0.9094
FY-3C MWHS2 ALLSKY RADIANCES CHANNEL 6 : out of range
1 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.9015, expected range: 0.7361 0.8568
atms
All NPP ATMS ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 11840.75 14004.97
ssmis
DMSP-17 SSMIS RADIANCES CHANNEL 8 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.1239, expected range: 0.4890 0.5876
DMSP-17 SSMIS RADIANCES CHANNEL 9 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0943, expected range: 0.5093 0.7568
DMSP-17 SSMIS RADIANCES CHANNEL 10 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0619, expected range: 0.5579 0.6120
DMSP-18 SSMIS RADIANCES CHANNEL 9 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0741, expected range: 0.5113 0.5472
DMSP-17 SSMIS RADIANCES CHANNEL 11 : out of range
9 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0375, expected range: 0.6108 0.6108
DMSP-17 SSMIS RADIANCES CHANNEL 17 : out of range
11 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0829, expected range: 0.7707 0.7707
DMSP-18 SSMIS RADIANCES CHANNEL 10 : out of range
14 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0494, expected range: 0.5874 0.5874
DMSP-18 SSMIS RADIANCES CHANNEL 11 : out of range
10 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0331, expected range: 0.6393 0.6393
Atmospheric Motion Vector
All AQUA MODIS CLEAR WV ALL LAYERS Global : all data missing
Severely_persistent: obs_number=0, expected range: 95.81 1038.76
All NPP VIIRS AMV IR ALL LAYERS Global : all data missing
Severely_persistent: obs_number=0, expected range: 119.46 1395.93
Radiosondes
LAND TEMP Q (G/KG) 38341 PRESSURE LAYER 900-1200 (HPA) : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=10.1211, expected range: -5.4490 23.2162
Severely_persistent: rms_fgdepar=10.1720, expected range: 0.0000 23.2170
All HIGH RESO SEA TEMP ALL LAYERS North East Pacific : all data missing
Severely_persistent: obs_number=0, expected range: 47.84 550.34
LAND TEMP Q (G/KG) 44373 PRESSURE LAYER 600-900 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=8.6425, expected range: -3.8786 4.7834
Severe: rms_fgdepar=8.6425, expected range: 0.0000 3.1892
Severe: avg_pge=0.9844, expected range: -0.0288 0.0409
LAND TEMP Q (G/KG) 36003 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_fgdepar=6.8369, expected range: 0.0290 6.2924
Severe: rms_fgdepar=6.9044, expected range: 0.2770 6.1972
LAND TEMP Q (G/KG) 17064 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_fgdepar=6.1808, expected range: -2.2767 8.0033
Severe: rms_fgdepar=6.2658, expected range: 0.0000 7.0228
LAND TEMP TEMPERATURE (K) 36003 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=8.5050, expected range: 0.0000 6.2670
Severe: avg_pge=0.8952, expected range: -0.7134 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 25403 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=19.8078, expected range: 0.0000 5.3724
LAND TEMP WIND VECTOR DIFF (M/S) 91376 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=16.0724, expected range: 0.0000 5.9470
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=95.0000, expected range: 185.4713 194.7509
Considerable: obs_number=1272.0000, expected range: 960.7702 1038.2298
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
Severe: obs_number=1927.0000, expected range: 1536.2226 1593.0274
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (3 pressure layers affected : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=285.0000, expected range: 183.5856 197.6644
HIGH RESO SEA TEMP WIND VECTOR DIFF (M/S) XKQLWQB PRESSURE LAYER 900-1 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=23.1061, expected range: -3.7337 40.3979
Severe: rms_fgdepar=23.1061, expected range: 0.0000 40.3979
amdar
WIGOS AMDAR TEMPERATURE (K) EU0133 PRESSURE LAYER 0-300 (HPA) : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8653, expected range: -1.6066 0.7500
WIGOS AMDAR TEMPERATURE (K) ZLK1T1ZA PRESSURE LAYER 900-1200 (HPA) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8932, expected range: -1.2327 0.7500
ADS-C WIND VECTOR DIFF (M/S) VQHJNZJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=23.1802, expected range: 0.0000 16.7468
ADS-C WIND VECTOR DIFF (M/S) TGFE0ARA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.0369, expected range: 0.0000 6.2610
airep
AIREP WIND VECTOR DIFF (M/S) QFA7 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=25.6558, expected range: 0.0000 17.4301
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : missing
Severe: obs_number=0.0000, expected range: 0.0000 953.7848
synop
MANUAL LAND SYNOP RH2M (%) 42770 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9995, expected range: -1.4632 0.7500
MANUAL LAND SYNOP RH2M (%) 62124 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=48.2108, expected range: 0.0000 41.9867
AUTOMATIC LAND SYNOP RH2M (%) 36341 : out of range
Severe: rms_fgdepar=44.9191, expected range: 0.0000 11.5178
Severe: avg_pge=0.9857, expected range: 0.0017 0.0038
MANUAL LAND SYNOP RH2M (%) 40672 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=44.4303, expected range: 0.0000 42.6163
Severe: avg_pge=1.0000, expected range: -0.9726 0.7500
MANUAL LAND SYNOP RH2M (%) 61233 : out of range
Severe: rms_fgdepar=42.1570, expected range: 0.0000 13.6989
Severe: rms_fgdepar=37.3046, expected range: 0.0000 19.9323
MANUAL LAND SYNOP RH2M (%) 82333 : out of range
Severe: rms_fgdepar=32.4344, expected range: 0.0000 17.6232
MANUAL LAND SYNOP RH2M (%) 33815 : out of range
Severe: rms_fgdepar=39.4714, expected range: 0.0000 9.0509
MANUAL LAND SYNOP RH2M (%) 38656 : out of range
Severe: rms_fgdepar=32.8127, expected range: 0.0000 9.1941
MANUAL LAND SYNOP RH2M (%) 83698 : out of range
Severe: rms_fgdepar=42.6160, expected range: 0.0000 32.0128
Severe: avg_pge=0.9743, expected range: -0.0630 0.0815
MANUAL LAND SYNOP RH2M (%) 33829 : out of range
Severe: rms_fgdepar=34.2937, expected range: 0.0000 9.1812
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 82599 : out of range
Severe: rms_fgdepar=340.4076, expected range: 0.0000 81.2634
BUFR LAND SYNOP RH2M (%) 10840 : out of range
Severe: rms_fgdepar=35.8648, expected range: 0.0000 16.7514
BUFR LAND SYNOP RH2M (%) 11190 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=36.7963, expected range: 0.0000 9.8251
BUFR LAND SYNOP RH2M (%) 36003 : out of range
Severe: rms_fgdepar=32.4373, expected range: 0.0000 17.0949
BUFR LAND SYNOP RH2M (%) 76253 : out of range
Severe: avg_pge=0.9249, expected range: -0.8406 0.7500
BUFR LAND SYNOP RH2M (%) 33834 : out of range
Severe: rms_fgdepar=31.3225, expected range: 0.0000 13.4052
BUFR LAND SYNOP RH2M (%) 52436 : out of range
Severe: rms_fgdepar=32.2907, expected range: 0.0000 16.0331
Severe: avg_pge=0.8386, expected range: -0.0274 0.0396
BUFR LAND SYNOP RH2M (%) 72356 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=32.8461, expected range: 0.0000 18.6021
BUFR LAND SYNOP RH2M (%) 27369 : out of range
Severe: rms_fgdepar=30.5927, expected range: 0.0000 17.4242
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V7693 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=518.5533, expected range: 48.6728 875.4620
Severely_persistent: rms_fgdepar=518.5801, expected range: 49.5250 875.8512
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V9268 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=740.7916, expected range: -1060.5383 922.4800
Severe: rms_fgdepar=740.7916, expected range: 0.0000 912.1733
Severe: avg_pge=0.8599, expected range: -1.4038 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 6102804 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-670.3449, expected range: -1221.5734 1014.3621
Severely_persistent: rms_fgdepar=670.5977, expected range: -1004.3412 1218.1533
Severely_persistent: avg_pge=0.9244, expected range: -1.7172 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4701747 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=565.1571, expected range: -831.8319 1453.0642
Severely_persistent: rms_fgdepar=565.4875, expected range: 0.0000 1318.1357
Severely_persistent: avg_pge=0.9068, expected range: -0.5391 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6203751 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=552.2590, expected range: -185.0833 255.8903
Severe: rms_fgdepar=555.5158, expected range: 0.0000 276.1955
Severe: avg_pge=0.8900, expected range: -0.8092 0.7500
metar
METAR SURFACE PRESSURE (PA) SAOC : out of range
Severe: rms_fgdepar=314.9566, expected range: 0.0000 130.5749
snow
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-773.4684, expected range: -773.0814 -772.3820
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=773.4685, expected range: 772.3822 773.0814
AUTOMATIC LAND SYNOP SNOW (CM) 73013 : out of range
Severe: avg_fgdepar=68.8232, expected range: -24.0308 34.2530
Severe: rms_fgdepar=68.8232, expected range: -24.0308 34.2530
t2m
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89004 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.8138, expected range: -23.7902 17.0123
Severely_persistent: rms_fgdepar=15.8138, expected range: -13.0310 25.3746
METAR 2M TEMPERATURE (K) OIGK : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-12.5374, expected range: -14.7373 -2.4545
Severely_persistent: rms_fgdepar=12.6462, expected range: 2.6448 15.2610
METAR 2M TEMPERATURE (K) UGMS : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=13.2608, expected range: 6.3695 14.0862
Severely_persistent: rms_fgdepar=13.2867, expected range: 6.3547 14.2235
BUFR LAND SYNOP 2M TEMPERATURE (K) 89004 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.8921, expected range: -26.5468 17.0435
Severely_persistent: rms_fgdepar=15.8921, expected range: 0.0000 25.1328
BUFR LAND SYNOP 2M TEMPERATURE (K) 78896 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=12.1948, expected range: 2.0798 20.4015
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 51644 : out of range
Severe: avg_fgdepar=-12.3757, expected range: -19.0394 18.3187
Severe: rms_fgdepar=12.3757, expected range: 0.0000 13.1032