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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-08-17 18:00
| amsua | ||
| AQUA/AMSUA RADIANCES CHANNEL 11 : out of range
21 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.1938, expected range: 0.2095 0.2245 |
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| METOP-A/AMSUA RADIANCES CHANNEL 10 : out of range
Severe: stdev_fgdepar=0.2395, expected range: 0.1986 0.2255 |
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| METOP-A/AMSUA RADIANCES CHANNEL 9 : out of range
Considerable: stdev_fgdepar=0.1935, expected range: 0.1501 0.1823 |
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| METOP-A/AMSUA RADIANCES CHANNEL 13 : out of range
Considerable: avg_biascorr=0.1884, expected range: 0.2182 0.3041 |
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| iasi | ||
| METOP-A/IASI RADIANCES CHANNEL 5399 : out of range
19 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.4084, expected range: 0.2426 0.3319 |
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| METOP-B/IASI RADIANCES CHANNEL 178 : out of range
21 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.1637, expected range: 0.0064 0.1108 |
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| METOP-B/IASI RADIANCES CHANNEL 236 : out of range
16 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.2121, expected range: 0.1440 0.1886 |
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| METOP-C/IASI RADIANCES CHANNEL 236 : out of range
25 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.1872, expected range: 0.1007 0.1537 |
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| METOP-C/IASI RADIANCES CHANNEL 249 : out of range
33 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=0.0805, expected range: -0.0247 0.0393 |
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| cris | ||
| NPP/CRIS RADIANCES CHANNEL 622 : out of range
28 times in the last 10 days for at least one item Severely_persistent: avg_fgdepar=0.1844, expected range: 0.0436 0.1599 |
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| NPP/CRIS RADIANCES CHANNEL 1149 : out of range
54 times in the last 10 days for at least one item Severely_persistent: avg_fgdepar=5.3371, expected range: -0.3076 0.3155 Severely_persistent: stdev_fgdepar=1.9233, expected range: 0.0709 0.3529 |
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| NPP/CRIS RADIANCES CHANNEL 1157 : out of range
25 times in the last 10 days for at least one item Severely_persistent: avg_fgdepar=3.1694, expected range: -0.2954 0.3049 |
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| NPP/CRIS RADIANCES CHANNEL 1189 : out of range
11 times in the last 10 days for at least one item Severely_persistent: avg_fgdepar=0.2486, expected range: -0.1186 0.1254 |
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| NPP/CRIS RADIANCES (16 channels affected) : out of range
Severe: obs_number=5022.0000, expected range: 7584.7569 8057.7195 |
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| NOAA20/CRIS RADIANCES CHANNEL 6 : out of range
1 times in the last 10 days for at least one item Slight: obs_number=11106.0000, expected range: 11199.0199 11856.8412 |
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| NOAA20/CRIS RADIANCES CHANNEL 8 : out of range
1 times in the last 10 days for at least one item Slight: obs_number=11089.0000, expected range: 11162.9952 11869.9492 |
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| NOAA20/CRIS RADIANCES CHANNEL 18 : out of range
1 times in the last 10 days for at least one item Slight: obs_number=11150.0000, expected range: 11234.3293 11844.7262 |
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| NOAA20/CRIS RADIANCES CHANNEL 20 : out of range
1 times in the last 10 days for at least one item Slight: obs_number=11203.0000, expected range: 11263.3429 11840.0269 |
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| NOAA20/CRIS RADIANCES CHANNEL 52 : out of range
1 times in the last 10 days for at least one item Slight: obs_number=11203.0000, expected range: 11262.2289 11825.3822 |
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| NOAA20/CRIS RADIANCES CHANNEL 55 : out of range
1 times in the last 10 days for at least one item Slight: obs_number=11221.0000, expected range: 11279.6379 11831.5402 |
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| atms | ||
| NPP/ATMS RADIANCES (19 channels affected) : out of range
Considerable: obs_number=2073.0000, expected range: 2752.5108 3974.4103 |
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| Geostationary CSR | ||
| GOES-15/IMAGER RADIANCES CHANNEL 2 : out of range
13 times in the last 10 days for at least one item Severely_persistent: obs_number=58648.0000, expected range: 7089.6441 17964.0568 |
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| GOES-15/IMAGER RADIANCES CHANNEL 3 : out of range
13 times in the last 10 days for at least one item Severely_persistent: obs_number=15843.0000, expected range: 1395.4265 7913.6680 |
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| GOES-16/ABI RADIANCES CHANNEL 2 : out of range
1 times in the last 10 days for at least one item Severe: obs_number=7074.0000, expected range: 38481.7099 53029.8901 |
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| GOES-16/ABI RADIANCES CHANNEL 3 : out of range
1 times in the last 10 days for at least one item Severe: obs_number=7076.0000, expected range: 38488.5993 53027.7207 Slight: stdev_fgdepar=0.5925, expected range: 0.3429 0.5650 |
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| GOES-16/ABI RADIANCES CHANNEL 4 : out of range
1 times in the last 10 days for at least one item Severe: obs_number=7077.0000, expected range: 38500.8506 53026.1094 |
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| GOES-16/ABI RADIANCES CHANNEL 7 : out of range
Considerable: obs_number=2959.0000, expected range: 9526.3467 29116.8072 |
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| Radiosondes | ||
| All LAND TEMP Q (G/KG) ALL LAYERS WMO BLOCK 74 : all data missing
Severe: obs_number=0, expected range: 0.00 275.52 |
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| All HIGH RESO LAND TEMP Q (G/KG) ALL LAYERS WMO BLOCK 40 : all data missing
Severe: obs_number=0, expected range: 78.88 103.89 |
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| pilot | ||
| All LAND PILOT WIND VECTOR DIFF (M/S) ALL LAYERS North West Pacific : all data missing
Severe: obs_number=0, expected range: 0.00 311.96 |
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| synop | ||
| AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
6 times in the last 10 days for at least one item Severely_persistent: obs_number=641.0000, expected range: 1057.9075 1346.7592 |
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| MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
12 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=260.0000, expected range: 25.5446 144.2314 |
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| BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
12 times in the last 10 days for at least one item Severely_persistent: rms_fgdepar=81.7084, expected range: 42.3442 54.7671 Severely_persistent: rms_fgdepar=115.7914, expected range: 41.5567 69.1329 |
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| buoy | ||
| DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
8 times in the last 10 days for at least one item Severely_persistent: avg_biascorr=4.3373, expected range: 0.0000 0.0000 |
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