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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2021-07-25 12:00

amsua
NOAA-15 AMSUA RADIANCES CHANNEL 12 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.4205, expected range: 0.3433 0.3821
NOAA-15 AMSUA RADIANCES CHANNEL 13 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6686, expected range: 0.5433 0.5666
NOAA-18 AMSUA RADIANCES CHANNEL 13 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6867, expected range: 0.5525 0.6140
NOAA-18 AMSUA RADIANCES CHANNEL 14 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1515, expected range: 0.9155 1.0161
NOAA-19 AMSUA RADIANCES CHANNEL 12 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.4387, expected range: 0.3714 0.4006
NOAA-19 AMSUA RADIANCES CHANNEL 13 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6918, expected range: 0.5508 0.5930
NOAA-19 AMSUA RADIANCES CHANNEL 14 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.2051, expected range: 0.9002 1.0239
METOP-A AMSUA RADIANCES CHANNEL 12 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.4708, expected range: 0.3980 0.4226
METOP-A AMSUA RADIANCES CHANNEL 13 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.7339, expected range: 0.5994 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=1.2794, expected range: 1.0334 1.0763
METOP-B AMSUA RADIANCES CHANNEL 12 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.4411, expected range: 0.3470 0.3972
METOP-B AMSUA RADIANCES CHANNEL 13 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6821, expected range: 0.5535 0.5883
METOP-B AMSUA RADIANCES CHANNEL 14 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1721, expected range: 0.9423 1.0048
METOP-C AMSUA RADIANCES CHANNEL 13 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6327, expected range: 0.5059 0.5720
METOP-C AMSUA RADIANCES CHANNEL 14 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.0956, expected range: 0.9073 0.9838
METOP-A AMSUA RADIANCES (8 channels affected) : out of range
Considerable: obs_number=9116.0000, expected range: 11588.5525 21134.8592
METOP-C AMSUA RADIANCES (10 channels affected) : out of range
Considerable: obs_number=9506.0000, expected range: 13837.4800 21866.1670
iasi
METOP-A IASI RADIANCES CHANNEL 5480 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2894, expected range: -0.2595 -0.2355
METOP-A IASI RADIANCES CHANNEL 151 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3310, expected range: -0.2865 -0.2624
METOP-A IASI RADIANCES CHANNEL 252 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.5081, expected range: -0.4368 -0.3829
METOP-A IASI RADIANCES CHANNEL 256 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3013, expected range: -0.2510 -0.1850
METOP-A IASI RADIANCES CHANNEL 176 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3870, expected range: 0.3417 0.3593
METOP-A IASI RADIANCES CHANNEL 3029 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: obs_number=706.0000, expected range: 249.4549 394.1899
METOP-A IASI RADIANCES CHANNEL 3049 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: obs_number=687.0000, expected range: 244.7575 363.3177
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=2781.0000, expected range: 2201.1462 2374.8234
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=-0.2861, expected range: -0.2208 -0.2159
METOP-B IASI RADIANCES CHANNEL 252 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4666, expected range: -0.3964 -0.3206
METOP-B IASI RADIANCES CHANNEL 256 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2496, expected range: -0.1905 -0.1130
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=2606.0000, expected range: 1954.0548 2170.9682
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=2823.0000, expected range: 2131.9199 2329.7316
METOP-C IASI RADIANCES CHANNEL 151 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3502, expected range: -0.3207 -0.3007
METOP-C IASI RADIANCES CHANNEL 252 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.5139, expected range: -0.4504 -0.3821
METOP-A IASI RADIANCES CHANNEL 2907 : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=564.0000, expected range: 222.0254 259.0350
METOP-B IASI RADIANCES (26 channels affected) : out of range
Severe: avg_biascorr=0.1091, expected range: 0.1402 0.1502
cris
NOAA20 CRIS RADIANCES (13 channels affected) : out of range
1 times in the last 10 days for at least one item
Considerable: stdev_fgdepar=0.2259, expected range: 0.1891 0.2105
airs
AQUA AIRS RADIANCES CHANNEL 98 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0272, expected range: 0.0053 0.0275
AQUA AIRS RADIANCES CHANNEL 116 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2823, expected range: -0.2181 -0.2116
AQUA AIRS RADIANCES CHANNEL 128 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1936, expected range: -0.1589 -0.1414
AQUA AIRS RADIANCES CHANNEL 1111 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2793, expected range: 0.3651 0.4103
AQUA AIRS RADIANCES CHANNEL 129 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.9582, expected range: 0.8153 0.8964
AQUA AIRS RADIANCES CHANNEL 180 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.8112, expected range: -0.7228 -0.7035
AQUA AIRS RADIANCES CHANNEL 92 : out of range
4 times in the last 10 days for at least one item
Severe: stdev_fgdepar=0.9246, expected range: 0.8064 0.8710
atms
NPP ATMS RADIANCES CHANNEL 12 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3540, expected range: -0.3065 -0.2948
NPP ATMS RADIANCES CHANNEL 14 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6472, expected range: 0.4959 0.5704
NPP ATMS RADIANCES CHANNEL 15 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.2018, expected range: 0.8925 1.0222
NOAA20 ATMS RADIANCES CHANNEL 13 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3862, expected range: 0.3055 0.3473
NOAA20 ATMS RADIANCES CHANNEL 14 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.6239, expected range: 0.4831 0.5426
NOAA20 ATMS RADIANCES CHANNEL 15 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=1.1665, expected range: 0.7933 0.9906
Atmospheric Motion Vector
HIMAWARI-8 AMV CLOUDY WV2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 : out of range
Considerable: avg_press=221.3131, expected range: 237.7079 255.1737
METEOSAT-11 AMV IR3 WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=516.0000, expected range: 949.7492 1313.7241