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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2020-07-04 00:00

iasi
METOP-C IASI RADIANCES CHANNEL 170 : out of range
Considerable: avg_biascorr=-0.0564, expected range: -0.0256 0.0353
cris
NPP CRIS RADIANCES CHANNEL 92 : out of range
Slight: stdev_fgdepar=0.1171, expected range: 0.1045 0.1143
NOAA20 CRIS RADIANCES CHANNEL 92 : out of range
Slight: stdev_fgdepar=0.1088, expected range: 0.0908 0.1051
NOAA20 CRIS RADIANCES CHANNEL 94 : out of range
Slight: stdev_fgdepar=0.1094, expected range: 0.0929 0.1048
NOAA20 CRIS RADIANCES CHANNEL 95 : out of range
Slight: stdev_fgdepar=0.1074, expected range: 0.0894 0.1028
NOAA20 CRIS RADIANCES CHANNEL 96 : out of range
Slight: stdev_fgdepar=0.1098, expected range: 0.0940 0.1060
Atmospheric Motion Vector
AQUA MODIS CLEAR WV WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA : out of range
Considerable: obs_number=1411.0000, expected range: 664.0420 1149.9580
GOES-17 AMV CLOUDY WV3 WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HP : out of range
Considerable: obs_number=6762.0000, expected range: 3820.6067 5461.8933
resat
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 1-2 (HPA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.0233, expected range: 0.0023 0.0131
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 30-31 (HPA) : out of range
3 times in the last 10 days for at least one item
Slight: stdev_fgdepar=0.0243, expected range: 0.0090 0.0209
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 20-21 (HPA) : out of range
9 times in the last 10 days for at least one item
Slight: avg_fgdepar=-0.0436, expected range: -0.0404 -0.0333
Radiosondes
LAND TEMP Q (G/KG) 42623 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=6.1730, expected range: 0.0000 9.3335
LAND TEMP Q (G/KG) 23330 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=3.2385, expected range: 0.0000 1.5759
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected : missing
1 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 30.6242 389.7996
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 900-1200 (HPA) : missing
1 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 67.1669 305.4045
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : missing
2 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 68.9659 387.0964
Severe: obs_number=0.0000, expected range: 172.0901 197.9099
All HIGH RESO LAND TEMP ALL LAYERS South pole : all data missing
Severe: obs_number=0, expected range: 132.86 255.14
amdar
TAMDAR TEMPERATURE (K) (3 pressure layers affected) : out of range
Considerable: obs_number=505.0000, expected range: 0.0000 329.2573
Considerable: obs_number=500.0000, expected range: 0.0000 316.4319
TAMDAR WIND VECTOR DIFF (M/S) (3 pressure layers affected) : out of range
Considerable: obs_number=351.0000, expected range: 9.8504 210.8839
synop
AUTOMATIC LAND SYNOP RH2M (%) : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9231, expected range: -1.6426 0.7500
Considerable: obs_number=1910.0000, expected range: 2054.0386 2331.2556
Considerable: obs_number=1472.0000, expected range: 1733.8435 1802.1565
AUTOMATIC LAND SYNOP RH2M (%) 35182 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9996, expected range: -1.1596 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 41308 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9231, expected range: -1.6426 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40674 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=502.9202, expected range: -776.9173 995.2033
Severely_persistent: rms_fgdepar=502.9896, expected range: -758.8318 987.7888
Severely_persistent: avg_pge=0.8886, expected range: -1.5848 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 68647 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=50.4314, expected range: -58.4931 59.9370
Severe: rms_fgdepar=50.4314, expected range: 0.0000 41.8220
AUTOMATIC LAND SYNOP RH2M (%) 68839 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=50.2199, expected range: -74.1503 98.0624
Severe: rms_fgdepar=50.2199, expected range: -61.8661 90.5776
Severe: avg_pge=0.9212, expected range: -1.4925 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 47639 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8344, expected range: -1.1678 0.7500
MANUAL LAND SYNOP RH2M (%) 41560 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9964, expected range: -1.4910 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 41712 : out of range
Severe: rms_fgdepar=389.9770, expected range: 0.0000 235.2831
Severe: avg_pge=0.8068, expected range: -0.6024 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 47022 : out of range
Severe: rms_fgdepar=405.3741, expected range: 0.0000 209.6455
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 82193 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=562.4242, expected range: 0.0000 143.5155
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43318 : out of range
Severe: rms_fgdepar=337.0347, expected range: 0.0000 46.4521
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 22768 : out of range
Severe: rms_fgdepar=563.4531, expected range: 28.4266 161.0782
BUFR LAND SYNOP RH2M (%) : out of range
Severe: obs_number=702.0000, expected range: 887.8899 917.8601
Considerable: obs_number=634.0000, expected range: 815.0741 863.1481
Considerable: obs_number=1735.0000, expected range: 1974.5675 2100.6825
BUFR LAND SYNOP RH2M (%) 71151 : out of range
Severe: rms_fgdepar=32.5025, expected range: 0.0000 17.6403
BUFR LAND SYNOP RH2M (%) 71942 : out of range
Severe: avg_pge=0.8840, expected range: -0.0222 0.0341
BUFR LAND SYNOP RH2M (%) 23472 : out of range
Severe: rms_fgdepar=34.4511, expected range: 0.0000 16.8147
BUFR LAND SYNOP RH2M (%) 71295 : out of range
Severe: rms_fgdepar=37.2651, expected range: 0.0000 19.9069
Severe: avg_pge=0.9807, expected range: -0.0072 0.0146
BUFR LAND SYNOP RH2M (%) 71906 : out of range
Severe: rms_fgdepar=32.6683, expected range: 0.0000 13.1752
BUFR LAND SYNOP RH2M (%) 16459 : out of range
Severe: avg_pge=0.9462, expected range: -0.8734 0.7500
BUFR LAND SYNOP RH2M (%) 71299 : out of range
Severe: avg_pge=0.9983, expected range: -0.6086 0.7352
BUFR LAND SYNOP SURFACE PRESSURE (PA) 11880 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=332.4900, expected range: 0.0000 111.4116
Severe: avg_pge=0.8218, expected range: -0.1887 0.2393
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48921 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8577, expected range: -1.2234 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48952 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=394.8279, expected range: 0.0000 159.6483
Severe: avg_pge=0.8269, expected range: -0.4389 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94654 : out of range
Severe: rms_fgdepar=433.1570, expected range: 0.0000 85.5567
Severe: avg_pge=0.8816, expected range: -1.3475 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 12215 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=420.2211, expected range: 0.0000 264.2770
Severe: avg_pge=0.9095, expected range: -1.2336 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48935 : out of range
Severe: avg_fgdepar=535.8967, expected range: -175.0599 372.1544
Severe: rms_fgdepar=580.6985, expected range: 0.0000 351.6324
Severe: avg_pge=0.8439, expected range: -0.8457 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48927 : out of range
Severe: rms_fgdepar=318.0203, expected range: 0.0000 160.5552
BUFR LAND SYNOP SURFACE PRESSURE (PA) 43318 : out of range
Severe: rms_fgdepar=337.0347, expected range: 0.0000 46.4521
BUFR LAND SYNOP SURFACE PRESSURE (PA) 22768 : out of range
Severe: rms_fgdepar=563.4531, expected range: 0.0000 226.6475
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) V7SD8 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=546.3624, expected range: -288.5906 1302.8242
Severely_persistent: rms_fgdepar=546.3624, expected range: 0.0000 1299.3477
Severely_persistent: avg_pge=0.8210, expected range: -0.3364 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) OZDQ2 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=32.2045, expected range: -20.6389 38.0621
Severe: rms_fgdepar=32.2045, expected range: 0.0000 38.0621
Severe: avg_pge=0.9466, expected range: -0.8678 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) V7SD8 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=23.5841, expected range: -8.8797 15.5949
Severe: rms_fgdepar=23.5841, expected range: 0.0000 15.5127
Severe: avg_pge=0.9281, expected range: -1.0794 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) OXTN2 : out of range
Severe: rms_fgdepar=344.8565, expected range: 9.1719 146.8884
BUFR SHIP SYNOP SURFACE PRESSURE (PA) J8AZ3 : out of range
Severe: rms_fgdepar=327.2734, expected range: 28.5667 186.5286
BUFR SHIP SYNOP SURFACE PRESSURE (PA) C6DQ4 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=508.7642, expected range: -791.6432 1162.5467
BUFR SHIP SYNOP SURFACE PRESSURE (PA) AMOUK49 : out of range
Severe: avg_pge=0.8747, expected range: -1.2077 0.7500
buoy
MOORED BUOYS WIND VECTOR DIFF (M/S) 5300041 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8650, expected range: 0.3571 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4101769 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-614.0471, expected range: -2277.7694 2488.5593
Severely_persistent: rms_fgdepar=624.8677, expected range: 0.0000 1453.0744
Severely_persistent: avg_pge=0.9106, expected range: 0.3098 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1601582 : out of range
Severe: avg_pge=0.8079, expected range: -1.1323 0.7500
MOORED BUOYS SURFACE PRESSURE (PA) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=70.0000, expected range: 83.8299 110.2812
Considerable: obs_number=70.0000, expected range: 83.8299 110.2812
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
Considerable: obs_number=87.0000, expected range: 95.9990 101.1121
snow
BUFR LAND SYNOP SNOW (CM) 01035 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=107.4521, expected range: 100.7640 134.1350
Severely_persistent: rms_fgdepar=107.4521, expected range: 100.7627 134.1429
AUTOMATIC LAND SYNOP SNOW (CM) 11316 : out of range
Severe: avg_fgdepar=83.6876, expected range: 72.5976 147.7178
Severe: rms_fgdepar=83.6876, expected range: 72.5976 147.7178
MANUAL LAND SYNOP SNOW (CM) 37566 : out of range
Severe: avg_fgdepar=51.0000, expected range: -6.7600 47.4475
Severe: rms_fgdepar=51.0000, expected range: 0.0000 55.0579
BUFR LAND SYNOP SNOW (CM) 11316 : out of range
Severe: avg_fgdepar=83.6882, expected range: 72.6360 147.6515
Severe: rms_fgdepar=83.6882, expected range: 72.6360 147.6515
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-12.3093, expected range: -12.6105 -4.4065
Severely_persistent: rms_fgdepar=12.3096, expected range: 4.5055 12.7857
Severely_persistent: avg_est_pge=0.8509, expected range: 0.6615 0.8859
METAR 2M TEMPERATURE (K) KLCK : out of range
29 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.9416, expected range: -18.3926 -8.4723
Severely_persistent: rms_fgdepar=16.2417, expected range: 8.7537 18.6867
LAND TEMP 2M TEMPERATURE (K) 04360 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-12.1686, expected range: -25.0091 21.3759
Severely_persistent: rms_fgdepar=12.1686, expected range: 0.0000 24.5367
BUFR LAND SYNOP 2M TEMPERATURE (K) 27415 : out of range
28 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-18.3684, expected range: -21.3862 -11.5021
Severely_persistent: rms_fgdepar=18.3684, expected range: 11.6660 21.3288
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-12.3802, expected range: -12.4273 -4.7155
Severely_persistent: rms_fgdepar=12.3805, expected range: 4.7642 12.6519
Severely_persistent: avg_est_pge=0.8523, expected range: 0.6826 0.8712
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 68541 : out of range
Severe: avg_fgdepar=-12.1489, expected range: -8.4796 4.3305
Severe: rms_fgdepar=12.3742, expected range: 0.0000 7.9120
Severe: avg_est_pge=0.8069, expected range: -0.2911 0.8706
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89266 : out of range
Severe: avg_fgdepar=17.6808, expected range: -7.0693 6.9955
Severe: rms_fgdepar=17.7126, expected range: 0.0000 6.7107
Severe: avg_est_pge=0.8411, expected range: -0.1971 0.6257
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8250, expected range: -0.2486 0.9735
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
Severe: obs_number=1546.0000, expected range: 1833.4391 1857.4359
Considerable: obs_number=1992.0000, expected range: 2186.2564 2363.1186
METAR 2M TEMPERATURE (K) KIDA : out of range
Severe: rms_fgdepar=11.1190, expected range: 0.0000 5.8132
METAR 2M TEMPERATURE (K) MPPA : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.5214, expected range: 0.0000 4.3567
METAR 2M TEMPERATURE (K) KPOC : out of range
Severe: rms_fgdepar=10.5216, expected range: 0.0000 5.1306
METAR 2M TEMPERATURE (K) KSRQ : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=11.3010, expected range: 1.1206 3.3222
METAR 2M TEMPERATURE (K) KFEW : out of range
Severe: avg_fgdepar=-17.6374, expected range: -6.9571 5.2948
Severe: rms_fgdepar=17.6374, expected range: 0.5223 8.7422
Severe: avg_est_pge=0.8427, expected range: -0.0277 0.5550
LAND TEMP 2M TEMPERATURE (K) 48565 : out of range
Severe: avg_fgdepar=-12.4651, expected range: -2.8939 1.2137
Severe: rms_fgdepar=12.4651, expected range: 0.0000 2.6660
BUFR LAND SYNOP 2M TEMPERATURE (K) 89266 : out of range
Severe: avg_fgdepar=17.2990, expected range: -6.9133 6.9063
Severe: rms_fgdepar=17.3223, expected range: 0.0000 6.3520
BUFR LAND SYNOP 2M TEMPERATURE (K) 89507 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8096, expected range: 0.4148 0.8744
BUFR LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8278, expected range: -0.2607 0.9900
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
Severe: obs_number=1848.0000, expected range: 2135.5727 2192.3023
Considerable: obs_number=2822.0000, expected range: 3020.1022 3299.2728
rh2m
All BUFR LAND SYNOP WMO BLOCK 98 : all data missing
Severely_persistent: obs_number=0, expected range: 123.36 134.35