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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2021-12-01 12:00

amsua
NOAA 15 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6795, expected range: 0.5468 0.5874
NOAA 18 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6750, expected range: 0.5775 0.5886
NOAA 19 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6787, expected range: 0.5717 0.5985
METOP-B AMSUA ALL SKY RADIANCES CHANNEL 14 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6680, expected range: 0.5855 0.5903
METOP-B AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6736, expected range: 0.5720 0.5871
METOP-C AMSUA ALL SKY RADIANCES CHANNEL 14 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6646, expected range: 0.5430 0.5504
METOP-C AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6553, expected range: 0.5248 0.5435
NOAA 18 AMSUA ALL SKY RADIANCES (5 channels affected) : out of range
2 times in the last 10 days for at least one item
Severe: stdev_norm_fgdepar=0.7674, expected range: 0.6569 0.7142
iasi
METOP-B IASI RADIANCES CHANNEL 205 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0567, expected range: 0.0318 0.0971
METOP-B IASI RADIANCES CHANNEL 1643 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.1672, expected range: 0.0163 0.0910
METOP-B IASI RADIANCES CHANNEL 1626 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1839, expected range: 0.1277 0.1596
METOP-C IASI RADIANCES CHANNEL 249 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.0631, expected range: -0.0369 0.0021
METOP-C IASI RADIANCES CHANNEL 207 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0072, expected range: 0.0503 0.1190
METOP-C IASI RADIANCES CHANNEL 191 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0658, expected range: 0.1054 0.1487
METOP-C IASI RADIANCES CHANNEL 205 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1264, expected range: -0.0390 0.0301
METOP-C IASI RADIANCES CHANNEL 148 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1958, expected range: 0.2288 0.2358
METOP-C IASI RADIANCES CHANNEL 128 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2104, expected range: 0.2569 0.2703
METOP-C IASI RADIANCES CHANNEL 122 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2182, expected range: 0.2477 0.2723
METOP-C IASI RADIANCES CHANNEL 66 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2471, expected range: 0.2720 0.2829
METOP-C IASI RADIANCES CHANNEL 183 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.0408, expected range: -0.0173 0.0023
METOP-C IASI RADIANCES (22 channels affected) : out of range
Severe: avg_biascorr=0.5851, expected range: 0.4782 0.4902
METOP-B IASI RADIANCES (151 channels affected) : out of range
Considerable: obs_number=2646.0000, expected range: 1891.8376 2252.3159
METOP-B IASI RADIANCES CHANNEL 5383 : out of range
1 times in the last 10 days for at least one item
Considerable: avg_fgdepar=0.1889, expected range: -0.1397 0.0692
METOP-B IASI RADIANCES CHANNEL 303 : out of range
4 times in the last 10 days for at least one item
Considerable: avg_fgdepar=0.0250, expected range: -0.0278 0.0032
METOP-C IASI RADIANCES CHANNEL 176 : out of range
1 times in the last 10 days for at least one item
Considerable: avg_fgdepar=0.0533, expected range: -0.0141 0.0290
METOP-C IASI RADIANCES CHANNEL 170 : out of range
4 times in the last 10 days for at least one item
Considerable: avg_fgdepar=0.0235, expected range: -0.0278 0.0062
METOP-C IASI RADIANCES CHANNEL 106 : out of range
1 times in the last 10 days for at least one item
Considerable: avg_fgdepar=0.0387, expected range: -0.0213 0.0185
METOP-C IASI RADIANCES CHANNEL 101 : out of range
3 times in the last 10 days for at least one item
Considerable: avg_fgdepar=0.0481, expected range: -0.0381 0.0142
METOP-B IASI RADIANCES CHANNEL 432 : out of range
2 times in the last 10 days for at least one item
Slight: avg_fgdepar=0.0360, expected range: -0.0067 0.0274
cris
NOAA20 CRIS RADIANCES CHANNEL 991 : out of range
25 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.4520, expected range: 0.3837 0.4127
NOAA20 CRIS RADIANCES CHANNEL 989 : out of range
24 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1373, expected range: 0.0849 0.1088
NOAA20 CRIS RADIANCES (25 channels affected) : out of range
1 times in the last 10 days for at least one item
Considerable: stdev_fgdepar=0.1974, expected range: 0.1626 0.1836
airs
AQUA AIRS RADIANCES CHANNEL 21 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1932, expected range: 0.0333 0.0688
Severely_persistent: stdev_fgdepar=0.8151, expected range: 0.8964 0.9331
AQUA AIRS RADIANCES CHANNEL 15 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1248, expected range: 0.0856 0.1008
AQUA AIRS RADIANCES CHANNEL 92 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.5559, expected range: 0.6150 0.6275
AQUA AIRS RADIANCES CHANNEL 69 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.5668, expected range: 0.6437 0.6620
AQUA AIRS RADIANCES CHANNEL 151 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1609, expected range: -0.0940 -0.0605
AQUA AIRS RADIANCES CHANNEL 1520 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.3579, expected range: 0.2832 0.3140
AQUA AIRS RADIANCES CHANNEL 172 : out of range
Severe: stdev_fgdepar=0.3718, expected range: 0.4206 0.4365
AQUA AIRS RADIANCES CHANNEL 93 : out of range
Severe: stdev_fgdepar=0.5287, expected range: 0.5878 0.6119
AQUA AIRS RADIANCES CHANNEL 40 : out of range
Severe: stdev_fgdepar=0.6386, expected range: 0.7294 0.7370
AQUA AIRS RADIANCES CHANNEL 157 : out of range
2 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.1970, expected range: -0.1268 -0.0869
AQUA AIRS RADIANCES CHANNEL 150 : out of range
2 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.1816, expected range: -0.1525 -0.1226
AQUA AIRS RADIANCES CHANNEL 138 : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.0825, expected range: -0.0284 0.0104
AQUA AIRS RADIANCES CHANNEL 111 : out of range
Considerable: stdev_fgdepar=0.5765, expected range: 0.6144 0.6834
AQUA AIRS RADIANCES (30 channels affected) : out of range
Considerable: obs_number=8859.0000, expected range: 9806.7374 10630.6743
mwhs2
FY-3D MWHS2 ALLSKY RADIANCES CHANNEL 6 : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=1048.0000, expected range: 1689.4068 3798.2387
FY-3D MWHS2 ALLSKY RADIANCES CHANNEL 5 : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=1048.0000, expected range: 1689.4568 3798.8170
atms
NPP ATMS RADIANCES CHANNEL 14 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.5360, expected range: 0.4366 0.4915
NPP ATMS RADIANCES CHANNEL 13 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3533, expected range: 0.2925 0.3239
NOAA20 ATMS RADIANCES CHANNEL 13 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3178, expected range: 0.2523 0.2813
ssmis
DMSP-17 SSMIS RADIANCES CHANNEL 5 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0046, expected range: 0.0034 0.0037
gpsro
COSMIC2-E1 GPSRO SETTING (24 impact heights affected) : out of range
Considerable: obs_number=802.0000, expected range: 1936.7337 2895.5016
Atmospheric Motion Vector
METOP-C AMV IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=282.0000, expected range: 352.0986 485.7078
Geostationary CSR
All GOES-16 ABI ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 62571.90 78697.33
All GOES-17 GEOS RADIANCES ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 18492.01 143510.30
scatt
All HY-2B SCATTEROMETER Global : all data missing
Severe: obs_number=0, expected range: 93846.38 155369.38