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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2020-05-26 00:00

amsua
NOAA-15 AMSUA RADIANCES CHANNEL 13 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.3101, expected range: -0.3765 -0.3587
NOAA-15 AMSUA RADIANCES CHANNEL 8 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0881, expected range: -0.0726 -0.0674
NOAA-15 AMSUA RADIANCES CHANNEL 8 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1775, expected range: 0.2088 0.2342
NOAA-18 AMSUA RADIANCES CHANNEL 9 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.6614, expected range: -0.5917 -0.5662
NOAA-19 AMSUA RADIANCES CHANNEL 5 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0284, expected range: -0.0142 -0.0038
NOAA-19 AMSUA RADIANCES CHANNEL 5 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0192, expected range: 0.0572 0.0655
NOAA-19 AMSUA RADIANCES CHANNEL 4 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.1819, expected range: -0.0943 -0.0848
METOP-A AMSUA RADIANCES CHANNEL 9 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0074, expected range: 0.0375 0.0678
AQUA AMSUA RADIANCES CHANNEL 13 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1073, expected range: -0.1664 -0.1341
METOP-B AMSUA RADIANCES CHANNEL 13 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0544, expected range: -0.1019 -0.0865
METOP-B AMSUA RADIANCES CHANNEL 8 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0064, expected range: 0.0147 0.0223
METOP-B AMSUA RADIANCES CHANNEL 7 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4236, expected range: -0.3848 -0.3766
METOP-C AMSUA RADIANCES CHANNEL 9 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.4349, expected range: -0.3921 -0.3878
METOP-C AMSUA RADIANCES CHANNEL 10 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0737, expected range: 0.0181 0.0563
METOP-C AMSUA RADIANCES CHANNEL 4 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.1325, expected range: -0.0905 -0.0434
NOAA-15 AMSUA RADIANCES CHANNEL 4 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=-0.2274, expected range: -0.1676 -0.0964
NOAA-18 AMSUA RADIANCES CHANNEL 12 : out of range
1 times in the last 10 days for at least one item
Considerable: stdev_fgdepar=0.4287, expected range: 0.3157 0.3826
iasi
METOP-B IASI RADIANCES CHANNEL 217 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1129, expected range: -0.0991 -0.0962
METOP-B IASI RADIANCES (21 channels affected) : out of range
Severe: avg_biascorr=0.0067, expected range: 0.0332 0.0530
METOP-C IASI RADIANCES (21 channels affected) : out of range
Severe: avg_biascorr=-0.0372, expected range: -0.0048 0.0062
METOP-A IASI RADIANCES CHANNEL 375 : out of range
3 times in the last 10 days for at least one item
Slight: stdev_fgdepar=0.2717, expected range: 0.2422 0.2640
cris
NPP CRIS RADIANCES CHANNEL 42 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2410, expected range: 0.3087 0.3235
NPP CRIS RADIANCES CHANNEL 48 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2239, expected range: 0.2969 0.3062
NPP CRIS RADIANCES CHANNEL 51 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2230, expected range: 0.2957 0.3086
NPP CRIS RADIANCES CHANNEL 143 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0895, expected range: -0.0804 -0.0765
NOAA20 CRIS RADIANCES CHANNEL 33 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1384, expected range: 0.1623 0.1651
NPP CRIS RADIANCES (17 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=0.1906, expected range: 0.2092 0.2210
NPP CRIS RADIANCES (40 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0622, expected range: 0.0809 0.0868
NOAA20 CRIS RADIANCES CHANNEL 64 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.1669, expected range: 0.1848 0.1967
NOAA20 CRIS RADIANCES CHANNEL 65 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.1714, expected range: 0.1963 0.1977
NOAA20 CRIS RADIANCES CHANNEL 66 : out of range
2 times in the last 10 days for at least one item
Severe: avg_biascorr=0.1706, expected range: 0.1841 0.1969
NOAA20 CRIS RADIANCES CHANNEL 68 : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=0.1729, expected range: 0.1848 0.1998
NPP CRIS RADIANCES CHANNEL 134 : out of range
2 times in the last 10 days for at least one item
Considerable: avg_fgdepar=-0.0472, expected range: -0.0395 -0.0285
NPP CRIS RADIANCES CHANNEL 141 : out of range
3 times in the last 10 days for at least one item
Considerable: avg_fgdepar=-0.0466, expected range: -0.0389 -0.0237
NPP CRIS RADIANCES CHANNEL 161 : out of range
2 times in the last 10 days for at least one item
Considerable: avg_fgdepar=-0.0718, expected range: -0.0613 -0.0406
airs
AQUA AIRS RADIANCES CHANNEL 232 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.7376, expected range: -0.6679 -0.6225
AQUA AIRS RADIANCES CHANNEL 256 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.5863, expected range: -0.5372 -0.4735
AQUA AIRS RADIANCES CHANNEL 318 : missing
2 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 735.7091 15991.4456
saphir
All MEGHA-TROPIQUES SAPHIR ALLSKY ALL CHANNELS Global : all data missing
Severely_persistent: obs_number=0, expected range: 1284.31 16989.47
gpsro
All TERRASAR-X GPSRO SETTING ALL HEIGHTS Global : all data missing
Severely_persistent: obs_number=0, expected range: 670.08 1538.55
All KOMPSAT-5 GPSRO SETTING ALL HEIGHTS Global : all data missing
Severely_persistent: obs_number=0, expected range: 167.25 989.48
Atmospheric Motion Vector
NOAA-19 AVHRR IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Slight: stdev_fgdepar=2.4744, expected range: 1.4961 2.2511
Slight: avg_fgdepar=4.6990, expected range: 3.1395 4.3388
Slight: avg_press=427.2222, expected range: 446.3304 491.1070
NPP VIIRS AMV IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Slight: avg_press=250.4873, expected range: 260.9817 287.1018
Slight: avg_press=250.0884, expected range: 261.4332 286.2149
NOAA20 VIIRS-AMV IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Slight: avg_press=249.5014, expected range: 259.7280 289.1961
Slight: avg_press=249.9978, expected range: 260.1123 289.0105
GOES-17 AMV CLOUDY WV3 WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HP : out of range
Slight: obs_number=8186.0000, expected range: 5416.1712 7296.3288
Slight: obs_number=8154.0000, expected range: 5290.8595 7409.1405
mwri
FY-3D MWRI RADIANCES (6 channels affected) : out of range
Slight: obs_number=14386.0000, expected range: 15354.0000 15354.0000
scatt
METOP-A ASCAT WIND VECTOR DIFF (M/S) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=976.0000, expected range: 12937.6193 15836.6665
Slight: obs_number=9816.0000, expected range: 22637.5842 45212.3945
Considerable: obs_number=15644.0000, expected range: -2809.6676 3675.2216
Slight: obs_number=15640.0000, expected range: -6839.7926 7533.9241
METOP-A ASCAT WIND VECTOR DIFF (M/S) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=976.0000, expected range: 12937.6193 15836.6665
Slight: obs_number=9816.0000, expected range: 22637.5842 45212.3945
Considerable: obs_number=15644.0000, expected range: -2809.6676 3675.2216
Slight: obs_number=15640.0000, expected range: -6839.7926 7533.9241
Radiosondes
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 40 : all data missing
Severely_persistent: obs_number=0, expected range: 108.05 137.55
HIGH RESO SEA TEMP Q (G/KG) PRESSURE LAYER 0-300 (HPA) : missing
9 times in the last 10 days for at least one item
Severely_persistent: obs_number=0.0000, expected range: 0.0000 276.2630
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
Severe: obs_number=129.0000, expected range: 63.1072 66.6428
Severe: obs_number=195.0000, expected range: 125.7024 134.0476
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 95 : all data missing
Severe: obs_number=0, expected range: 99.51 138.99
airep
All AIREP ALL LAYERS Indian Ocean : all data missing
Severe: obs_number=0, expected range: 79.96 421.64
All AIREP ALL LAYERS Indian Ocean Tropica : all data missing
Severe: obs_number=0, expected range: 29.61 232.66
All AIREP ALL LAYERS Indian Ocean Tropica : all data missing
Severe: obs_number=0, expected range: 29.62 232.78
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA) : missing
1 times in the last 10 days for at least one item
Severe: obs_number=0.0000, expected range: 0.0000 938.8647