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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2021-11-24 12:00

amsua
NOAA 15 AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7812, expected range: 0.6609 0.7236
NOAA 15 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6987, expected range: 0.5339 0.5874
NOAA 18 AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7791, expected range: 0.6565 0.7152
NOAA 18 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6911, expected range: 0.5163 0.5886
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=0.7150, expected range: 0.5051 0.5914
NOAA 19 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7185, expected range: 0.5410 0.5985
NOAA 19 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=0.7287, expected range: 0.5093 0.6041
METOP-B AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7655, expected range: 0.6617 0.6984
METOP-B AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.6969, expected range: 0.5219 0.5871
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=0.7295, expected range: 0.5000 0.5903
METOP-C AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.7210, expected range: 0.6057 0.6492
METOP-C 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=0.6559, expected range: 0.4911 0.5435
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=0.7134, expected range: 0.4747 0.5504
iasi
METOP-B IASI RADIANCES CHANNEL 5401 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.3853, expected range: 0.2125 0.2807
METOP-C IASI RADIANCES CHANNEL 59 : out of range
21 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.3151, expected range: 0.3564 0.3626
METOP-C IASI RADIANCES CHANNEL 128 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2288, expected range: 0.2569 0.2786
METOP-C IASI RADIANCES CHANNEL 148 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2131, expected range: 0.2288 0.2461
METOP-C IASI RADIANCES CHANNEL 5401 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.4139, expected range: 0.2394 0.3197
METOP-C IASI RADIANCES CHANNEL 5403 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.4139, expected range: 0.2303 0.3206
METOP-B IASI RADIANCES (57 channels affected) : out of range
Severe: stdev_fgdepar=0.2768, expected range: 0.3157 0.3167
METOP-B IASI RADIANCES (26 channels affected) : out of range
Severe: avg_biascorr=0.6846, expected range: 0.3911 0.4250
METOP-C IASI RADIANCES (61 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: stdev_fgdepar=0.2510, expected range: 0.2774 0.2972
METOP-C IASI RADIANCES (19 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=0.6343, expected range: 0.3219 0.3479
METOP-B IASI RADIANCES CHANNEL 290 : out of range
Considerable: avg_biascorr=0.0693, expected range: 0.0795 0.0990
METOP-B IASI RADIANCES CHANNEL 314 : out of range
Considerable: avg_biascorr=-0.0485, expected range: -0.0365 -0.0132
METOP-C IASI RADIANCES CHANNEL 1536 : out of range
Considerable: avg_fgdepar=-0.1284, expected range: -0.0562 0.0872
METOP-C IASI RADIANCES CHANNEL 1574 : out of range
Considerable: avg_fgdepar=-0.1863, expected range: -0.0728 0.0984
METOP-C IASI RADIANCES CHANNEL 1585 : out of range
Considerable: avg_fgdepar=-0.1722, expected range: -0.0774 0.0882
METOP-C IASI RADIANCES CHANNEL 1587 : out of range
1 times in the last 10 days for at least one item
Considerable: avg_fgdepar=-0.1615, expected range: -0.0724 0.0831
METOP-C IASI RADIANCES CHANNEL 1626 : out of range
Considerable: avg_fgdepar=-0.1291, expected range: -0.0465 0.0749
METOP-C IASI RADIANCES CHANNEL 1643 : out of range
Considerable: avg_fgdepar=-0.1255, expected range: -0.0503 0.0750
METOP-C IASI RADIANCES CHANNEL 432 : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=1034.0000, expected range: 1142.9840 1339.9812
METOP-C IASI RADIANCES CHANNEL 1521 : out of range
Slight: avg_fgdepar=-0.1329, expected range: -0.0769 0.1084
METOP-C IASI RADIANCES CHANNEL 1578 : out of range
Slight: avg_fgdepar=-0.1669, expected range: -0.0831 0.0852
METOP-C IASI RADIANCES CHANNEL 1579 : out of range
Slight: avg_fgdepar=-0.1647, expected range: -0.0958 0.0885
METOP-C IASI RADIANCES CHANNEL 1658 : out of range
Slight: avg_fgdepar=-0.1264, expected range: -0.0734 0.1067
cris
NOAA20 CRIS RADIANCES CHANNEL 965 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1781, expected range: -0.2307 -0.2076
NOAA20 CRIS RADIANCES CHANNEL 93 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.0054, expected range: -0.0430 -0.0224
NOAA20 CRIS RADIANCES (34 channels affected) : out of range
Considerable: obs_number=2679.0000, expected range: 2877.7704 3118.5371
airs
AQUA AIRS RADIANCES CHANNEL 21 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1856, expected range: -0.0765 0.0688
AQUA AIRS RADIANCES CHANNEL 98 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.3675, expected range: 0.1016 0.1112
AQUA AIRS RADIANCES CHANNEL 1048 : out of range
2 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.1005, expected range: -0.1473 -0.1248
Slight: avg_fgdepar=-0.2667, expected range: -0.2011 0.0079
AQUA AIRS RADIANCES (16 channels affected) : out of range
Severe: stdev_fgdepar=0.7622, expected range: 0.8528 0.9050
AQUA AIRS RADIANCES CHANNEL 257 : out of range
1 times in the last 10 days for at least one item
Considerable: avg_fgdepar=-0.0318, expected range: -0.0079 0.0359
AQUA AIRS RADIANCES (11 channels affected) : out of range
4 times in the last 10 days for at least one item
Considerable: avg_biascorr=-0.0724, expected range: -0.0396 0.0088
AQUA AIRS RADIANCES CHANNEL 186 : out of range
Considerable: obs_number=893.0000, expected range: 263.7023 719.4476
AQUA AIRS RADIANCES CHANNEL 190 : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=818.0000, expected range: 230.3209 598.8791
AQUA AIRS RADIANCES CHANNEL 192 : out of range
3 times in the last 10 days for at least one item
Considerable: obs_number=782.0000, expected range: 211.7432 547.0568
AQUA AIRS RADIANCES CHANNEL 193 : out of range
Considerable: obs_number=859.0000, expected range: 238.5113 664.6887
AQUA AIRS RADIANCES CHANNEL 201 : out of range
Considerable: obs_number=722.0000, expected range: 185.0122 510.1878
AQUA AIRS RADIANCES CHANNEL 1038 : out of range
Slight: avg_fgdepar=-0.2465, expected range: -0.1890 0.0082
AQUA AIRS RADIANCES CHANNEL 1069 : out of range
Slight: avg_fgdepar=-0.2231, expected range: -0.1696 0.0217
AQUA AIRS RADIANCES CHANNEL 1079 : out of range
Slight: avg_fgdepar=-0.2709, expected range: -0.1952 0.0067
AQUA AIRS RADIANCES CHANNEL 1082 : out of range
Slight: avg_fgdepar=-0.2808, expected range: -0.2053 0.0129
AQUA AIRS RADIANCES CHANNEL 1083 : out of range
Slight: avg_fgdepar=-0.2828, expected range: -0.2110 0.0111
AQUA AIRS RADIANCES CHANNEL 1088 : out of range
Slight: avg_fgdepar=-0.3103, expected range: -0.2129 -0.0008
AQUA AIRS RADIANCES CHANNEL 1090 : out of range
Slight: avg_fgdepar=-0.2693, expected range: -0.2040 0.0145
AQUA AIRS RADIANCES CHANNEL 1104 : out of range
Slight: avg_fgdepar=-0.2399, expected range: -0.1590 0.0151
atms
NPP ATMS RADIANCES CHANNEL 13 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3476, expected range: 0.2963 0.3239
NOAA20 ATMS RADIANCES CHANNEL 13 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: stdev_fgdepar=0.3174, expected range: 0.2461 0.2813
ssmis
DMSP-17 SSMIS RADIANCES (9 channels affected) : out of range
Considerable: obs_number=14295.0000, expected range: 15820.3912 19170.5500
gpsro
COSMIC2-E4 GPSRO SETTING HEIGHT 2-4 KM : out of range
Considerable: obs_number=1387.0000, expected range: 1898.5076 2930.5512
amdar
AMDAR TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=4.3254, expected range: 0.3965 1.2081
ADS-C WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Considerable: obs_number=472.0000, expected range: 77.4809 325.3965