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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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.
Early delivery 4D-VAR at 2022-11-01 00:00
| amsua | ||
| NOAA-15 AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.1100, expected range: -0.0680 -0.0519 Severely_persistent: avg_biascorr=-0.2387, expected range: -0.1091 -0.0052 |
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| NOAA-15 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
13 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.0570, expected range: 0.0797 0.1073 |
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| NOAA-18 AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
13 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.4745, expected range: -0.4082 -0.3331 Severely_persistent: avg_biascorr=-0.6236, expected range: -0.4788 -0.3881 |
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| NOAA-18 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
13 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.4039, expected range: -0.3258 -0.2856 Severely_persistent: avg_biascorr=-0.5547, expected range: -0.4194 -0.3859 |
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| NOAA-18 AMSUA ALL SKY RADIANCES CHANNEL 10 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.7629, expected range: -0.9748 -0.9537 |
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| NOAA-19 AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.2583, expected range: 0.2852 0.3192 Severely_persistent: avg_biascorr=0.3503, expected range: -0.0099 0.0939 |
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| NOAA-19 AMSUA ALL SKY RADIANCES CHANNEL 8 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=5.8711, expected range: 3.7151 4.1965 |
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| NOAA-19 AMSUA ALL SKY RADIANCES CHANNEL 10 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.0979, expected range: -0.3158 -0.3092 |
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| NOAA-19 AMSUA ALL SKY RADIANCES CHANNEL 11 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.0592, expected range: -0.3190 -0.2295 |
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| METOP-B AMSUA ALL SKY RADIANCES CHANNEL 11 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.1081, expected range: 0.1343 0.1586 Severely_persistent: avg_biascorr=0.0858, expected range: -0.2325 -0.2233 |
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| METOP-B AMSUA ALL SKY RADIANCES CHANNEL 12 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.2541, expected range: 0.2992 0.3157 |
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| METOP-B AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.2798, expected range: 0.3303 0.3367 |
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| METOP-B AMSUA ALL SKY RADIANCES CHANNEL 10 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.0666, expected range: -0.3102 -0.2743 |
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| METOP-C AMSUA ALL SKY RADIANCES CHANNEL 11 : out of range
12 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.3494, expected range: -0.3118 -0.2786 Severely_persistent: avg_biascorr=-0.5669, expected range: -0.4718 -0.3609 |
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| 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: avg_biascorr=-0.4499, expected range: -0.3919 -0.3726 Severely_persistent: avg_biascorr=-0.5814, expected range: -0.4402 -0.2620 Severely_persistent: avg_biascorr=-0.4420, expected range: -0.8357 -0.7125 |
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| METOP-C AMSUA ALL SKY RADIANCES CHANNEL 13 : out of range
14 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.2591, expected range: -0.2090 -0.1886 Severely_persistent: avg_biascorr=-0.1070, expected range: -0.4668 -0.4547 |
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| METOP-B AMSUA ALL SKY RADIANCES (5 channels affected) : out of range
Considerable: avg_biascorr=0.5649, expected range: 0.3946 0.4946 |
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| AMSUA Pacific RARS | ||
| All NOAA-18 AMSUA ALL SKY CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 0.00 4040.98 |
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| All NOAA-19 AMSUA ALL SKY CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 0.00 1873.70 |
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| iasi | ||
| METOP-B IASI RADIANCES CHANNEL 386 : out of range
15 times in the last 10 days for at least one item Severely_persistent: avg_fgdepar=-0.0377, expected range: 0.0774 0.1019 |
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| METOP-C IASI RADIANCES CHANNEL 1579 : out of range
35 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-0.1089, expected range: -0.0934 -0.0885 |
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| cris | ||
| All NPP CRIS ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 6707.30 10002.45 |
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| All NOAA20 CRIS ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 8092.52 8884.35 |
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| mwhs2 | ||
| FY-3D MWHS2 ALLSKY RADIANCES CHANNEL 13 : out of range
11 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-1.3437, expected range: -1.2312 -1.1722 |
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| FY-3D MWHS2 ALLSKY RADIANCES CHANNEL 12 : out of range
16 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-1.6975, expected range: -1.5546 -1.4909 |
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| gpsro | ||
| All COSMIC2-E6 GPSRO RISING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 510.04 1592.88 |
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| Atmospheric Motion Vector | ||
| All HIMAWARI-8 AMV CLOUDY WV3 ALL LAYERS Global : all data missing
Severely_persistent: obs_number=0, expected range: 167.14 568.36 |
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| NPP VIIRS AMV IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Considerable: obs_number=516.0000, expected range: 146.4470 319.0530 |
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| scatt | ||
| All HY-2B SCATTEROMETER Global : all data missing
Severely_persistent: obs_number=0, expected range: 0.00 136827.93 |
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| resat | ||
| AURA OMI OZONE, TOP PRESSURE LAYER 12-13 (HPA) : out of range
38 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=-1.8858, expected range: -3.2167 -2.6772 |
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