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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

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=0.7067, expected range: 0.5631 0.5874
NOAA 18 AMSUA ALL SKY RADIANCES CHANNEL 14 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7281, expected range: 0.5901 0.5914
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=0.7269, expected range: 0.5817 0.5886
NOAA 18 AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7893, expected range: 0.6578 0.7152
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=0.6778, expected range: 0.5751 0.5985
NOAA 19 AMSUA ALL SKY RADIANCES CHANNEL 14 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7450, expected range: 0.4538 0.6199
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=0.7224, expected range: 0.5833 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=0.7143, expected range: 0.5800 0.5871
METOP-B AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7799, expected range: 0.6428 0.6984
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=0.6739, expected range: 0.5385 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=0.6754, expected range: 0.5332 0.5435
METOP-C AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7075, expected range: 0.5886 0.6492
iasi
METOP-B IASI RADIANCES CHANNEL 571 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3792, expected range: 0.3195 0.3421
METOP-B IASI RADIANCES CHANNEL 1643 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.1680, expected range: 0.0163 0.0910
METOP-B IASI RADIANCES CHANNEL 1626 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1886, expected range: 0.1307 0.1596
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=0.3136, expected range: 0.2777 0.2886
Severely_persistent: avg_biascorr=0.2089, expected range: 0.2288 0.2367
METOP-B IASI RADIANCES (104 channels affected) : out of range
Considerable: obs_number=2600.0000, expected range: 1876.3351 2252.3159
METOP-C IASI RADIANCES (36 channels affected) : out of range
Considerable: obs_number=795.0000, expected range: 284.9942 463.8171
METOP-C IASI RADIANCES CHANNEL 1509 : out of range
2 times in the last 10 days for at least one item
Considerable: avg_biascorr=-0.1158, expected range: -0.1632 -0.1356
METOP-B IASI RADIANCES CHANNEL 432 : out of range
1 times in the last 10 days for at least one item
Slight: avg_fgdepar=0.0300, expected range: -0.0029 0.0224
METOP-B IASI RADIANCES CHANNEL 296 : out of range
1 times in the last 10 days for at least one item
Slight: avg_fgdepar=0.0184, expected range: -0.0099 0.0099
METOP-C IASI RADIANCES CHANNEL 457 : out of range
Slight: avg_fgdepar=0.0415, expected range: -0.0017 0.0302
cris
NOAA20 CRIS RADIANCES CHANNEL 94 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.0303, expected range: -0.0489 -0.0082
NOAA20 CRIS RADIANCES CHANNEL 93 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.0296, expected range: -0.0578 -0.0224
NOAA20 CRIS RADIANCES CHANNEL 991 : out of range
25 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.4507, expected range: 0.3855 0.4127
NOAA20 CRIS RADIANCES CHANNEL 92 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.0287, expected range: -0.0508 -0.0074
NOAA20 CRIS RADIANCES CHANNEL 989 : out of range
23 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1411, expected range: 0.0872 0.1088
NOAA20 CRIS RADIANCES CHANNEL 23 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.1326, expected range: 0.1557 0.1699
NOAA20 CRIS RADIANCES (24 channels affected) : out of range
Severe: avg_biascorr=0.4024, expected range: 0.3364 0.3661
NOAA20 CRIS RADIANCES (29 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: stdev_fgdepar=0.2096, expected range: 0.1791 0.1924
airs
AQUA AIRS RADIANCES CHANNEL 1520 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.3409, expected range: 0.2813 0.3140
AQUA AIRS RADIANCES CHANNEL 69 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2510, expected range: -0.0387 0.0915
AQUA AIRS RADIANCES CHANNEL 15 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1706, expected range: 0.0831 0.1008
AQUA AIRS RADIANCES CHANNEL 110 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0780, expected range: -0.0420 -0.0175
AQUA AIRS RADIANCES CHANNEL 104 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.3632, expected range: 0.2050 0.2781
AQUA AIRS RADIANCES CHANNEL 21 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2425, expected range: 0.0347 0.0688
AQUA AIRS RADIANCES CHANNEL 198 : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=572.0000, expected range: 360.3350 457.0706
AQUA AIRS RADIANCES CHANNEL 193 : out of range
3 times in the last 10 days for at least one item
Considerable: obs_number=720.0000, expected range: 502.5579 664.6887
atms
NPP ATMS RADIANCES CHANNEL 12 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4866, expected range: -0.4199 -0.3734
NPP ATMS RADIANCES CHANNEL 14 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.5753, expected range: 0.4353 0.4915
NPP ATMS RADIANCES CHANNEL 13 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3729, expected range: 0.2997 0.3239
NOAA20 ATMS RADIANCES CHANNEL 12 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.5867, expected range: -0.5250 -0.4638
NOAA20 ATMS RADIANCES CHANNEL 14 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.5452, expected range: 0.3696 0.4529
NOAA20 ATMS RADIANCES CHANNEL 13 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3390, expected range: 0.2535 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=0.0044, expected range: 0.0034 0.0037
Atmospheric Motion Vector
METEOSAT-8 AMV CLOUDY WV2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-60 : out of range
Considerable: stdev_fgdepar=3.1916, expected range: 2.1235 2.6520
Considerable: avg_fgdepar=4.8506, expected range: 3.2654 3.9772
METOP-B AMV IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Considerable: obs_number=227.0000, expected range: 345.4287 531.4338
GOES-17 AMV IR1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 900-1200 (HPA) : out of range
Considerable: stdev_press=27.7520, expected range: 21.6484 24.5515
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: 113662.02 138304.48
amdar
All TAMDAR TEMPERATURE (K) ALL LAYERS Alantic Tropical are : all data missing
Severe: obs_number=0, expected range: 0.00 294.86