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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

Ensemble Data Assimilation at 2021-07-23 12:00

amsua
NOAA-15 AMSUA RADIANCES CHANNEL 13 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6189, expected range: 0.5490 0.5666
NOAA-18 AMSUA RADIANCES CHANNEL 13 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6654, expected range: 0.5569 0.6140
NOAA-18 AMSUA RADIANCES CHANNEL 14 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1686, expected range: 0.9005 1.0161
NOAA-19 AMSUA RADIANCES CHANNEL 12 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.4313, expected range: 0.3805 0.4006
NOAA-19 AMSUA RADIANCES CHANNEL 13 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6789, expected range: 0.5769 0.5930
NOAA-19 AMSUA RADIANCES CHANNEL 14 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1833, expected range: 0.9535 1.0239
METOP-A AMSUA RADIANCES CHANNEL 13 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6839, expected range: 0.5990 0.6295
METOP-A AMSUA RADIANCES CHANNEL 14 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1804, expected range: 1.0324 1.0763
METOP-B AMSUA RADIANCES CHANNEL 14 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1234, expected range: 0.9187 1.0048
METOP-C AMSUA RADIANCES CHANNEL 12 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.4130, expected range: 0.3369 0.3769
METOP-C AMSUA RADIANCES CHANNEL 13 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6484, expected range: 0.5100 0.5720
METOP-C AMSUA RADIANCES CHANNEL 14 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1301, expected range: 0.9226 0.9838
iasi
METOP-A IASI RADIANCES CHANNEL 5381 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: obs_number=2575.0000, expected range: 2050.5099 2104.2884
METOP-A IASI RADIANCES CHANNEL 5480 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2914, expected range: -0.2595 -0.2282
METOP-A IASI RADIANCES CHANNEL 151 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3594, expected range: -0.2865 -0.2623
METOP-A IASI RADIANCES CHANNEL 252 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4859, expected range: -0.4368 -0.3799
METOP-A IASI RADIANCES CHANNEL 2939 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: obs_number=966.0000, expected range: 272.2519 479.5503
METOP-A IASI RADIANCES CHANNEL 2991 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: obs_number=990.0000, expected range: 262.5766 501.8470
METOP-A IASI RADIANCES CHANNEL 3029 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: obs_number=891.0000, expected range: 256.6719 394.1899
METOP-A IASI RADIANCES CHANNEL 3049 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: obs_number=872.0000, expected range: 251.9863 363.3177
METOP-B IASI RADIANCES CHANNEL 5379 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: obs_number=2733.0000, expected range: 2131.3601 2211.3123
METOP-B IASI RADIANCES CHANNEL 5381 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: obs_number=2527.0000, expected range: 1914.2877 2072.5556
METOP-B IASI RADIANCES CHANNEL 5383 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: obs_number=2945.0000, expected range: 2328.2742 2374.8234
METOP-B IASI RADIANCES CHANNEL 176 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3653, expected range: 0.3190 0.3382
METOP-B IASI RADIANCES CHANNEL 151 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2817, expected range: -0.2208 -0.2151
METOP-B IASI RADIANCES CHANNEL 252 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4584, expected range: -0.3964 -0.3398
METOP-B IASI RADIANCES CHANNEL 3049 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: obs_number=913.0000, expected range: 161.7737 393.4198
METOP-C IASI RADIANCES CHANNEL 5379 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: obs_number=2839.0000, expected range: 1972.7491 2170.9682
METOP-C IASI RADIANCES CHANNEL 5381 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: obs_number=2606.0000, expected range: 1760.9122 2035.8757
METOP-C IASI RADIANCES CHANNEL 5383 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: obs_number=3077.0000, expected range: 2175.9789 2329.7316
METOP-C IASI RADIANCES CHANNEL 101 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3986, expected range: 0.3509 0.3703
METOP-C IASI RADIANCES CHANNEL 176 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3606, expected range: 0.2990 0.3200
METOP-C IASI RADIANCES CHANNEL 151 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3887, expected range: -0.3207 -0.2983
METOP-C IASI RADIANCES CHANNEL 252 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.5225, expected range: -0.4504 -0.3893
METOP-C IASI RADIANCES CHANNEL 3049 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: obs_number=948.0000, expected range: 109.6637 386.7390
METOP-A IASI RADIANCES (30 channels affected) : out of range
3 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0175, expected range: 0.0678 0.1031
METOP-C IASI RADIANCES (29 channels affected) : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.0040, expected range: 0.0426 0.0484
METOP-A IASI RADIANCES CHANNEL 249 : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=477.0000, expected range: 769.0090 1197.2635
METOP-A IASI RADIANCES CHANNEL 254 : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=501.0000, expected range: 836.1015 1254.2717
METOP-A IASI RADIANCES CHANNEL 260 : out of range
Considerable: obs_number=372.0000, expected range: 495.8463 903.8429
METOP-A IASI RADIANCES CHANNEL 262 : out of range
Considerable: obs_number=359.0000, expected range: 451.2341 817.2407
METOP-A IASI RADIANCES CHANNEL 306 : out of range
Considerable: obs_number=391.0000, expected range: 579.5018 963.0609
METOP-A IASI RADIANCES CHANNEL 3244 : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=254.0000, expected range: 660.7084 1112.8730
METOP-B IASI RADIANCES CHANNEL 5401 : out of range
Considerable: stdev_fgdepar=0.6172, expected range: 0.4764 0.5684
METOP-B IASI RADIANCES (17 channels affected) : out of range
Considerable: obs_number=1568.0000, expected range: 1729.8517 2304.1483
METOP-C IASI RADIANCES CHANNEL 432 : out of range
3 times in the last 10 days for at least one item
Considerable: obs_number=2302.0000, expected range: 1284.2594 1998.5542
cris
NOAA20 CRIS RADIANCES (11 channels affected) : out of range
Considerable: stdev_fgdepar=0.2266, expected range: 0.1871 0.2105
airs
AQUA AIRS RADIANCES CHANNEL 1869 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2089, expected range: -0.1947 -0.1803
AQUA AIRS RADIANCES CHANNEL 1123 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0073, expected range: 0.0565 0.0670
AQUA AIRS RADIANCES CHANNEL 98 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0243, expected range: 0.0053 0.0403
AQUA AIRS RADIANCES CHANNEL 116 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2551, expected range: -0.2181 -0.2082
AQUA AIRS RADIANCES CHANNEL 128 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2123, expected range: -0.1589 -0.1414
AQUA AIRS RADIANCES CHANNEL 129 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.9616, expected range: 0.8383 0.8964
atms
NPP ATMS RADIANCES CHANNEL 12 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3482, expected range: -0.3065 -0.2936
NPP ATMS RADIANCES CHANNEL 13 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.4150, expected range: 0.3472 0.3760
NPP ATMS RADIANCES CHANNEL 14 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6592, expected range: 0.5272 0.5704
NPP ATMS RADIANCES CHANNEL 15 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1981, expected range: 0.9391 1.0222
NOAA20 ATMS RADIANCES CHANNEL 13 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3811, expected range: 0.3133 0.3473
NOAA20 ATMS RADIANCES CHANNEL 14 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6168, expected range: 0.4869 0.5426
NOAA20 ATMS RADIANCES CHANNEL 15 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1565, expected range: 0.7890 0.9906
Atmospheric Motion Vector
HIMAWARI-8 AMV IR1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Considerable: avg_fgdepar=3.3027, expected range: 2.6214 3.0032
GOES-16 AMV CLOUDY WV3 WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HP : out of range
2 times in the last 10 days for at least one item
Slight: stdev_press=26.8701, expected range: 27.9156 29.7151
amdar
ADS-C TEMPERATURE (K) PRESSURE LAYER 300-600 (HPA) : missing
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=0.0000, expected range: 0.0000 258.3370