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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2021-09-15 12:00

mhs
METOP-A MHS ALLSKY RADIANCES CHANNEL 3 : out of range
Severe: avg_norm_fgdepar=-2.1914, expected range: -0.0906 -0.0139
METOP-A MHS ALLSKY RADIANCES CHANNEL 4 : out of range
Severe: avg_norm_fgdepar=-1.1893, expected range: -0.1146 0.0051
gpsro
METOP-C GRAS SETTING HEIGHT 2-4 KM : out of range
Severe: avg_norm_fgdepar=-0.1071, expected range: 0.3447 0.8630
METOP-A GRAS SETTING HEIGHT 2-4 KM : out of range
2 times in the last 10 days for at least one item
Considerable: avg_norm_fgdepar=-0.0985, expected range: 0.2931 0.8540
Slight: stdev_norm_fgdepar=0.7505, expected range: 0.8991 1.2855
METOP-A GRAS SETTING HEIGHT 4-6 KM : out of range
2 times in the last 10 days for at least one item
Slight: avg_norm_fgdepar=-0.0295, expected range: 0.1191 0.6652
Slight: stdev_norm_fgdepar=0.7325, expected range: 0.9008 1.4037
METOP-A GRAS SETTING HEIGHT 34-36 KM : out of range
2 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.7282, expected range: 0.8590 1.2423
METOP-C GRAS SETTING HEIGHT 4-6 KM : out of range
Slight: stdev_norm_fgdepar=0.7597, expected range: 0.9762 1.4853
Radiosondes
LAND TEMP TEMPERATURE (K) 24688 PRESSURE LAYER 900-1200 (HPA) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8075, expected range: -0.7344 0.7500
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 24 : all data missing
Severely_persistent: obs_number=0, expected range: 107.21 149.99
All HIGH RESO SEA TEMP ALL LAYERS North West Pacific : all data missing
Severely_persistent: obs_number=0, expected range: 83.90 144.96
HIGH RESO LAND TEMP TEMPERATURE (K) (4 pressure layers affected) : out of range
Severe: obs_number=463.0000, expected range: 285.7146 308.0354
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA : out of range
Severe: avg_fgdepar=9.1257, expected range: 0.4523 5.1890
Severe: rms_fgdepar=10.6754, expected range: 0.9563 5.4385
HIGH RESO LAND TEMP Q (G/KG) 72233 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=2.6208, expected range: 0.0000 1.1189
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
Severe: obs_number=97.0000, expected range: 182.5745 192.9255
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=190.0000, expected range: 277.5485 294.4515
Considerable: obs_number=850.0000, expected range: 736.4465 784.5535
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 300-600 (HPA) : out of range
Considerable: rms_fgdepar=1.0834, expected range: 0.1566 0.7735
amdar
WIGOS AMDAR WIND VECTOR DIFF (M/S) KIFHPCBA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.3422, expected range: 0.0000 8.7070
WIGOS AMDAR WIND VECTOR DIFF (M/S) LSIXPCRA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.4133, expected range: 0.2258 4.9425
MODE-S WIND VECTOR DIFF (M/S) MA60895 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.2068, expected range: 0.0000 7.6031
ADS-C WIND VECTOR DIFF (M/S) 5KMWRMZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=20.6703, expected range: 0.0000 10.6289
synop
BUFR LAND SYNOP SURFACE PRESSURE (PA) 26547 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=509.0002, expected range: -979.1947 1339.2493
BUFR LAND SYNOP SURFACE PRESSURE (PA) 86648 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=599.7441, expected range: -1047.1570 1115.6014
Severely_persistent: rms_fgdepar=599.7441, expected range: 0.0000 2089.5575
Severely_persistent: avg_pge=0.8924, expected range: -1.0829 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 18097 : out of range
Severe: rms_fgdepar=37.0889, expected range: 0.0000 20.7369
Severe: rms_fgdepar=33.6028, expected range: 1.9539 13.6052
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 89592 : out of range
Severe: avg_fgdepar=-672.1324, expected range: -198.3473 216.9454
Severe: rms_fgdepar=761.6549, expected range: 0.0000 231.5431
Severe: avg_pge=0.8569, expected range: -0.6558 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76593 : out of range
Severe: rms_fgdepar=321.3689, expected range: 0.0000 121.9394
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 60425 : out of range
Severe: rms_fgdepar=346.9657, expected range: 15.7797 138.8760
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83698 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8174, expected range: -1.2320 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43009 : out of range
Severe: avg_pge=0.8257, expected range: -0.0037 0.7500
MANUAL LAND SYNOP RH2M (%) 62120 : out of range
Severe: avg_pge=0.9400, expected range: -1.9928 0.7500
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=1.0000, expected range: -1.1116 0.7500
MANUAL LAND SYNOP RH2M (%) 60760 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=32.9623, expected range: 0.0000 10.2854
Severe: avg_pge=0.9771, expected range: 0.0015 0.0039
MANUAL LAND SYNOP RH2M (%) 64452 : out of range
Severe: avg_pge=0.8740, expected range: -0.0505 0.0688
BUFR LAND SYNOP SURFACE PRESSURE (PA) 60410 : out of range
Severe: rms_fgdepar=333.8540, expected range: 21.5298 174.0324
BUFR LAND SYNOP SURFACE PRESSURE (PA) 72570 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8031, expected range: -1.6099 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 28541 : out of range
Severe: rms_fgdepar=330.0775, expected range: 0.0000 80.9840
BUFR LAND SYNOP SURFACE PRESSURE (PA) 29581 : out of range
Severe: rms_fgdepar=322.4405, expected range: 0.0000 110.7593
BUFR LAND SYNOP SURFACE PRESSURE (PA) 29313 : out of range
Severe: rms_fgdepar=402.3056, expected range: 0.0000 106.9231
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48377 : out of range
Severe: avg_pge=0.8199, expected range: -0.6172 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 28748 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=322.8800, expected range: 0.0000 125.5157
BUFR LAND SYNOP RH2M (%) 17195 : out of range
Severe: rms_fgdepar=31.8609, expected range: 0.0000 9.9200
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
Considerable: obs_number=65.0000, expected range: 119.0272 168.7228
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
Considerable: obs_number=343.0000, expected range: 548.0049 598.9951
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V9365 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=781.9173, expected range: 385.7535 878.8878
Severely_persistent: rms_fgdepar=781.9173, expected range: 386.7751 878.1549
BUFR SHIP SYNOP SURFACE PRESSURE (PA) V7WS8 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-813.5465, expected range: -2583.8096 2646.3035
Severely_persistent: rms_fgdepar=813.5465, expected range: 0.0000 1403.7339
Severely_persistent: avg_pge=0.8837, expected range: -0.7757 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) VRJT6 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8984, expected range: -0.8255 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) 2HDF9 : out of range
Severe: avg_pge=0.8453, expected range: -0.6870 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) SMLQ : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=21.2580, expected range: -7.1704 24.2518
Severe: rms_fgdepar=21.3390, expected range: 0.0000 25.9509
Severe: avg_pge=0.9118, expected range: -0.3184 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) TBWUK91 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=824.4758, expected range: -314.4572 290.0377
Severe: rms_fgdepar=824.4758, expected range: 0.0000 418.6260
Severe: avg_pge=0.8755, expected range: -1.2776 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) J8QY1 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=713.9333, expected range: -556.4175 694.4160
Severe: rms_fgdepar=914.5803, expected range: 0.0000 597.7467
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9VFC3 : out of range
Severe: avg_fgdepar=-1160.4579, expected range: -411.0901 60.9720
Severe: rms_fgdepar=1160.4579, expected range: 0.0000 375.6322
Severe: avg_pge=0.9215, expected range: -0.2481 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 2300593 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8062, expected range: -1.5908 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6202626 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8166, expected range: -1.8175 0.7500
MOORED BUOYS SURFACE PRESSURE (PA) 4200012 : out of range
Severe: rms_fgdepar=335.5934, expected range: 0.0000 158.3455
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401540 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8541, expected range: -1.2832 0.7500
snow
BUFR LAND SYNOP SNOW (CM) _MI10DB0 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=53.8636, expected range: 50.7143 65.3322
BUFR LAND SYNOP SNOW (CM) _MI10DB0 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=54.5085, expected range: 52.1265 65.0751
BUFR LAND SYNOP SNOW (CM) _MI1B25E : out of range
32 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=56.4455, expected range: 47.3489 62.0594
BUFR LAND SYNOP SNOW (CM) _MI1B25E : out of range
32 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=56.5106, expected range: 48.3947 61.6238
BUFR LAND SYNOP SNOW (CM) _MI16E6F : out of range
36 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=64.0000, expected range: 51.4025 73.7693
BUFR LAND SYNOP SNOW (CM) _MI16E6F : out of range
36 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=64.1950, expected range: 51.9877 73.6257
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 51777 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-14.3142, expected range: -26.0487 20.4549
Severely_persistent: rms_fgdepar=14.3142, expected range: 0.0000 20.2182
METAR 2M TEMPERATURE (K) UGMS : out of range
8 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=12.0002, expected range: 7.5831 14.1155
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-17.6069, expected range: -21.5711 -9.7237
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI158E9 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=17.6302, expected range: 9.7608 21.5601
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89767 : out of range
Severe: rms_fgdepar=11.9344, expected range: 0.0000 4.5230
LAND TEMP 2M TEMPERATURE (K) 71945 : out of range
Severe: avg_fgdepar=14.9506, expected range: -3.3781 2.1840
Severe: rms_fgdepar=14.9506, expected range: -2.6277 5.2001
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI1A523 : out of range
Severe: rms_fgdepar=10.2227, expected range: 0.7068 4.9404
BUFR LAND SYNOP 2M TEMPERATURE (K) 89767 : out of range
Severe: rms_fgdepar=11.9474, expected range: 0.0000 4.5699
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
Considerable: obs_number=235.0000, expected range: 256.2982 282.5907