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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-05-24 00:00

amsua
NOAA 15 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2238, expected range: 0.1632 0.1972
NOAA 15 AMSUA ALL SKY RADIANCES CHANNEL 8 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0574, expected range: 0.1690 0.1802
NOAA 18 AMSUA ALL SKY RADIANCES CHANNEL 11 : out of range
24 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.8669, expected range: -0.7907 -0.7477
NOAA 19 AMSUA ALL SKY RADIANCES CHANNEL 7 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.5705, expected range: -0.4980 -0.4855
NOAA 19 AMSUA ALL SKY RADIANCES CHANNEL 9 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2085, expected range: -0.1376 -0.1306
METOP-B AMSUA ALL SKY RADIANCES CHANNEL 11 : out of range
23 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1908, expected range: -0.1380 -0.1148
METOP-C AMSUA ALL SKY RADIANCES CHANNEL 9 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.7115, expected range: -0.6014 -0.5870
METOP-C AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.7296, expected range: -0.5816 -0.4998
iasi
METOP-C IASI RADIANCES CHANNEL 224 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1394, expected range: -0.1270 -0.1111
METOP-C IASI RADIANCES CHANNEL 87 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0864, expected range: 0.1522 0.2014
METOP-C IASI RADIANCES CHANNEL 262 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0652, expected range: 0.0384 0.0401
METOP-C IASI RADIANCES CHANNEL 267 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0872, expected range: 0.0603 0.0726
METOP-C IASI RADIANCES CHANNEL 269 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0673, expected range: -0.0916 -0.0854
cris
NOAA20 CRIS RADIANCES CHANNEL 91 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0247, expected range: -0.0387 -0.0307
NOAA20 CRIS RADIANCES CHANNEL 92 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0321, expected range: 0.0141 0.0195
NOAA20 CRIS RADIANCES CHANNEL 94 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0332, expected range: 0.0114 0.0211
NOAA20 CRIS RADIANCES CHANNEL 95 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0629, expected range: 0.0344 0.0454
NOAA20 CRIS RADIANCES CHANNEL 96 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0081, expected range: -0.0429 -0.0272
NOAA20 CRIS RADIANCES CHANNEL 97 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0549, expected range: 0.0226 0.0376
NOAA20 CRIS RADIANCES CHANNEL 108 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0435, expected range: -0.0930 -0.0697
NOAA20 CRIS RADIANCES CHANNEL 101 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1740, expected range: -0.1256 -0.1058
airs
AQUA AIRS RADIANCES CHANNEL 262 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2080, expected range: -0.1921 -0.1812
AQUA AIRS RADIANCES CHANNEL 210 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0141, expected range: -0.0629 -0.0230
AQUA AIRS RADIANCES CHANNEL 226 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0911, expected range: -0.1740 -0.1327
AQUA AIRS RADIANCES CHANNEL 257 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1683, expected range: -0.2570 -0.2177
Severely_persistent: avg_biascorr=-0.3585, expected range: -0.2875 -0.2630
AQUA AIRS RADIANCES CHANNEL 272 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2637, expected range: -0.2191 -0.1894
AQUA AIRS RADIANCES CHANNEL 295 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.2380, expected range: -0.2059 -0.1813
Severely_persistent: avg_biascorr=0.0635, expected range: 0.0186 0.0292
mhs
NOAA-19 MHS ALLSKY RADIANCES CHANNEL 4 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.3842, expected range: 0.2889 0.3424
NOAA-19 MHS ALLSKY RADIANCES CHANNEL 3 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=1.5376, expected range: 1.3750 1.3797
METOP-B MHS ALLSKY RADIANCES CHANNEL 4 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1397, expected range: 0.0748 0.0966
METOP-C MHS ALLSKY RADIANCES CHANNEL 5 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1690, expected range: 0.1195 0.1393
atms
NPP ATMS RADIANCES CHANNEL 19 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0245, expected range: -0.1055 -0.0787
NPP ATMS RADIANCES CHANNEL 20 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1654, expected range: 0.0957 0.1000
NPP ATMS RADIANCES CHANNEL 21 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.3583, expected range: 0.2739 0.2901
NPP ATMS RADIANCES CHANNEL 22 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.9234, expected range: 0.7973 0.8553
NPP ATMS RADIANCES CHANNEL 14 : out of range
21 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1024, expected range: 0.0621 0.0661
NPP ATMS RADIANCES CHANNEL 12 : out of range
24 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3859, expected range: -0.3174 -0.2854
NOAA20 ATMS RADIANCES CHANNEL 20 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1380, expected range: -0.1828 -0.1689
NOAA20 ATMS RADIANCES CHANNEL 21 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0910, expected range: 0.0361 0.0522
NOAA20 ATMS RADIANCES CHANNEL 22 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.7009, expected range: 0.6007 0.6550
NOAA20 ATMS RADIANCES CHANNEL 13 : out of range
21 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3172, expected range: -0.3671 -0.3552
NOAA20 ATMS RADIANCES CHANNEL 14 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1768, expected range: -0.2336 -0.2109
NOAA20 ATMS RADIANCES CHANNEL 12 : out of range
25 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4927, expected range: -0.4430 -0.4238
NOAA20 ATMS RADIANCES CHANNEL 19 : out of range
Considerable: obs_number=19857.0000, expected range: 16950.3862 18902.3486
Atmospheric Motion Vector
AQUA MODIS CLEAR WV WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=604.0000, expected range: 139.2957 261.4521
AQUA MODIS IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=310.0000, expected range: 0.0000 179.6519
HIMAWARI-8 AMV IR1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 900-1200 (HPA : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=416.0000, expected range: 731.5170 1300.5555
scatt
All HY-2B SCATTEROMETER Global : all data missing
Severe: obs_number=0, expected range: 65224.71 175622.76