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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-07-31 12:00

amsua
NOAA 19 AMSUA ALL SKY RADIANCES CHANNEL 14 : out of range
Considerable: stdev_norm_fgdepar=0.6492, expected range: 0.5403 0.6118
atms
All NPP ATMS ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 11689.70 14156.47
ssmis
DMSP-17 SSMIS RADIANCES CHANNEL 9 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0909, expected range: 0.5093 0.5236
DMSP-17 SSMIS RADIANCES CHANNEL 11 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0215, expected range: 0.1564 0.1973
Slight: stdev_norm_fgdepar=0.0349, expected range: 0.6108 0.6108
DMSP-17 SSMIS RADIANCES CHANNEL 8 : out of range
9 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.1196, expected range: 0.4890 0.4890
DMSP-17 SSMIS RADIANCES CHANNEL 10 : out of range
16 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0518, expected range: 0.5579 0.5579
DMSP-17 SSMIS RADIANCES CHANNEL 17 : out of range
14 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0796, expected range: 0.7707 0.7707
DMSP-18 SSMIS RADIANCES CHANNEL 9 : out of range
16 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0791, expected range: 0.5113 0.5113
DMSP-18 SSMIS RADIANCES CHANNEL 10 : out of range
17 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0468, expected range: 0.5874 0.5874
DMSP-18 SSMIS RADIANCES CHANNEL 11 : out of range
12 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0322, 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: 0.00 1798.15
All NPP VIIRS AMV IR ALL LAYERS Global : all data missing
Severely_persistent: obs_number=0, expected range: 26.68 1538.85
Radiosondes
LAND TEMP Q (G/KG) 38341 PRESSURE LAYER 900-1200 (HPA) : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=8.0846, expected range: -3.6243 22.5290
Severely_persistent: rms_fgdepar=8.0846, expected range: 0.0000 22.5462
LAND TEMP TEMPERATURE (K) 36872 (2 pressure layers affected) : out of range
Severe: avg_fgdepar=16.3570, expected range: -0.9753 2.8793
Severe: rms_fgdepar=16.3931, expected range: 0.6304 3.5624
Severe: avg_pge=0.9409, expected range: -0.0784 0.4367
LAND TEMP TEMPERATURE (K) 24688 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=9.0769, expected range: 0.0000 2.8358
Severe: avg_pge=0.8396, expected range: -0.4155 0.7500
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected : out of range
Severe: obs_number=95.0000, expected range: 184.7577 195.6868
All HIGH RESO SEA TEMP ALL LAYERS North West Pacific : all data missing
Severe: obs_number=0, expected range: 60.10 163.33
amdar
WIGOS AMDAR TEMPERATURE (K) EU0133 PRESSURE LAYER 0-300 (HPA) : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8705, expected range: -1.1888 0.7500
WIGOS AMDAR TEMPERATURE (K) ZLK1T1ZA PRESSURE LAYER 900-1200 (HPA) : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8594, expected range: -1.2960 0.7500
AMDAR WIND VECTOR DIFF (M/S) TAM8147 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.3449, expected range: 2.3054 6.7443
WIGOS AMDAR WIND VECTOR DIFF (M/S) KRUIR4ZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.8284, expected range: 0.0000 8.3313
ADS-C WIND VECTOR DIFF (M/S) X3RYN1JA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.0095, expected range: 0.0000 8.0849
ADS-C WIND VECTOR DIFF (M/S) DG1JAZJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=19.7676, expected range: 0.0000 10.5122
airep
AIREP WIND VECTOR DIFF (M/S) ETH575 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=21.7174, expected range: 0.0000 9.3803
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 43128 PRESSURE LAYER 300-600 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=32.8731, expected range: -0.7901 9.0540
Severe: rms_fgdepar=37.8885, expected range: 0.0000 9.2105
Severe: avg_pge=0.8655, expected range: -0.8398 0.7500
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 17952 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8238, expected range: -1.5492 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42131 : out of range
Severe: rms_fgdepar=387.8528, expected range: 0.0000 202.6277
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42492 : out of range
Severe: rms_fgdepar=553.4257, expected range: 0.0000 164.6898
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43353 : out of range
Severe: rms_fgdepar=469.9637, expected range: 0.0000 127.5620
Severe: avg_pge=0.8920, expected range: -0.3813 0.4867
MANUAL LAND SYNOP RH2M (%) 62120 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9081, expected range: -0.5844 0.7500
MANUAL LAND SYNOP RH2M (%) 82184 : out of range
Severe: rms_fgdepar=43.8870, expected range: 0.0000 20.1060
MANUAL LAND SYNOP RH2M (%) 66285 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9946, expected range: 0.3793 0.7500
MANUAL LAND SYNOP RH2M (%) 36418 : out of range
Severe: rms_fgdepar=39.8690, expected range: 0.0000 21.1832
MANUAL LAND SYNOP RH2M (%) 83319 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8968, expected range: -1.2587 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 52681 : out of range
Severe: rms_fgdepar=316.0196, expected range: 0.0000 140.9182
BUFR LAND SYNOP SURFACE PRESSURE (PA) 15302 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=412.6564, expected range: 0.0000 92.4091
BUFR LAND SYNOP SURFACE PRESSURE (PA) 43354 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=382.7745, expected range: 0.0000 306.0907
Severe: avg_pge=0.8558, expected range: -0.8817 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 83825 : out of range
Severe: rms_fgdepar=598.5315, expected range: 0.0000 362.3070
BUFR LAND SYNOP SURFACE PRESSURE (PA) 17535 : out of range
Severe: rms_fgdepar=338.3071, expected range: 122.4376 219.2975
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48055 : out of range
Severe: rms_fgdepar=365.0885, expected range: 0.0000 269.6171
Severe: avg_pge=0.8500, expected range: -0.6593 0.7483
BUFR LAND SYNOP SURFACE PRESSURE (PA) 43097 : out of range
Severe: avg_fgdepar=969.4479, expected range: -518.8037 384.9420
Severe: rms_fgdepar=969.4479, expected range: 0.0000 276.9263
Severe: avg_pge=0.9309, expected range: -1.0806 0.7500
BUFR LAND SYNOP RH2M (%) 33564 : out of range
Severe: rms_fgdepar=42.1613, expected range: 0.0000 14.2866
BUFR LAND SYNOP RH2M (%) 29874 : out of range
Severe: rms_fgdepar=41.7173, expected range: 0.0000 31.2949
Severe: avg_pge=0.9998, expected range: -0.0144 0.0262
BUFR LAND SYNOP RH2M (%) 29915 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=32.0578, expected range: 0.0000 12.0791
BUFR LAND SYNOP RH2M (%) 76256 : out of range
Severe: rms_fgdepar=31.4070, expected range: 0.0000 17.6541
Severe: avg_pge=0.9925, expected range: -0.0035 0.0108
BUFR LAND SYNOP RH2M (%) 33717 : out of range
Severe: rms_fgdepar=50.0026, expected range: 0.0000 12.5013
Severe: avg_pge=1.0000, expected range: -0.0148 0.0227
BUFR LAND SYNOP RH2M (%) 33439 : out of range
Severe: rms_fgdepar=30.7013, expected range: 0.0000 15.7187
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=122.0000, expected range: 86.7024 95.0476
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V8838 : out of range
21 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-509.1602, expected range: -1228.8488 2199.6626
Severely_persistent: rms_fgdepar=509.1602, expected range: 0.0000 1744.6499
Severely_persistent: avg_pge=0.8309, expected range: -0.7554 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) PJWM : out of range
21 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=786.0205, expected range: 182.6582 1129.3426
Severely_persistent: rms_fgdepar=786.0205, expected range: 182.6582 1129.3426
Severely_persistent: avg_pge=0.8716, expected range: 0.5696 0.7500
SHIP SURFACE PRESSURE (PA) WTEK : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8421, expected range: -1.2759 0.7500
ABBREVIATED SHIP SURFACE PRESSURE (PA) WTEK : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8485, expected range: -0.6931 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) TBWUK50 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=550.4017, expected range: -85.8411 825.2176
Severe: rms_fgdepar=552.2580, expected range: 0.0000 825.2176
Severe: avg_pge=0.8022, expected range: -0.5278 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V5602 : out of range
Severe: rms_fgdepar=496.5969, expected range: 0.0000 362.5275
Severe: avg_pge=0.8102, expected range: -0.5398 0.7145
BUFR SHIP SYNOP SURFACE PRESSURE (PA) OXFG2 : out of range
Severe: avg_fgdepar=515.8528, expected range: -416.8446 385.7729
Severe: rms_fgdepar=515.8528, expected range: 0.0000 278.1380
Severe: avg_pge=0.8188, expected range: -1.1738 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) D5LH4 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=889.5320, expected range: -419.8344 1311.7336
Severe: rms_fgdepar=889.5320, expected range: 0.0000 1311.8752
Severe: avg_pge=0.8805, expected range: -0.3741 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) RCMSZ4L : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=20.2810, expected range: -2.2414 18.9834
Severe: rms_fgdepar=20.3130, expected range: 0.0000 18.9470
Severe: avg_pge=0.9110, expected range: -0.2565 0.7500
All BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) WMO BLOCK 5 : all data missing
Severe: obs_number=0, expected range: 26.61 151.33
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401851 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-567.8597, expected range: -337.0030 199.2390
Severely_persistent: rms_fgdepar=568.8124, expected range: 0.0000 376.6369
Severely_persistent: avg_pge=0.9094, expected range: -0.7241 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1401817 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8426, expected range: -0.5643 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6204570 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8713, expected range: -0.4138 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4402612 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8136, expected range: -1.1247 0.7500
metar
METAR SURFACE PRESSURE (PA) SEST : out of range
Severe: rms_fgdepar=597.8669, expected range: 0.0000 160.4155
snow
MANUAL LAND SYNOP SNOW (CM) 37552 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=56.5000, expected range: 10.5923 81.0327
Severely_persistent: rms_fgdepar=56.5553, expected range: 11.0315 81.7083
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=-772.9073, expected range: -774.1660 -771.5904
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=772.9074, expected range: 771.5905 774.1660
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89004 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-17.6424, expected range: -23.6009 16.8412
Severely_persistent: rms_fgdepar=17.6427, expected range: 0.0000 22.2994
METAR 2M TEMPERATURE (K) UGMS : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=13.5379, expected range: 6.8761 15.2621
Severely_persistent: rms_fgdepar=13.5379, expected range: 6.9154 15.3656
BUFR LAND SYNOP 2M TEMPERATURE (K) 80010 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=12.2670, expected range: 1.0555 16.3106
BUFR LAND SYNOP 2M TEMPERATURE (K) 89004 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-17.6959, expected range: -25.7300 17.1788
Severely_persistent: rms_fgdepar=17.6964, expected range: 0.0000 23.9269
BUFR LAND SYNOP 2M TEMPERATURE (K) 78896 : out of range
21 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.7975, expected range: -22.3049 -2.2833
Severely_persistent: rms_fgdepar=15.9860, expected range: 3.5260 22.2200
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=-14.7158, expected range: -12.1229 -3.9362
Severe: rms_fgdepar=14.7726, expected range: 4.0576 12.1732
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
Severe: avg_fgdepar=-16.9283, expected range: -8.4331 8.6632
Severe: rms_fgdepar=16.9312, expected range: 0.0000 10.1349
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=-14.7767, expected range: -12.1964 -4.0040
Severe: rms_fgdepar=14.8324, expected range: 4.1147 12.2477
BUFR LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
Severe: avg_fgdepar=-17.0044, expected range: -8.4891 8.6157
Severe: rms_fgdepar=17.0073, expected range: 0.0000 10.2640
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=178.0000, expected range: 129.6638 136.7572