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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

Delayed cut-off 4DVAR at 2020-01-13 12:00

amsua
METOP-A AMSUA RADIANCES CHANNEL 10 : out of range
Severe: avg_biascorr=0.9122, expected range: 0.7570 0.8582
METOP-A AMSUA RADIANCES CHANNEL 11 : out of range
Considerable: avg_biascorr=0.9421, expected range: 0.7509 0.8913
iasi
METOP-A IASI RADIANCES (390 channels affected) : out of range
Severe: obs_number=76156.0000, expected range: 123664.4795 126398.0920
METOP-A IASI RADIANCES CHANNEL 1785 : out of range
Severe: avg_fgdepar=0.0772, expected range: -0.0480 0.0246
METOP-B IASI RADIANCES CHANNEL 1121 : out of range
Severe: avg_biascorr=0.0679, expected range: 0.0548 0.0634
METOP-C IASI RADIANCES (105 channels affected) : out of range
Considerable: obs_number=2580.0000, expected range: 2098.5621 2409.8665
airs
AQUA AIRS RADIANCES CHANNEL 1123 : out of range
1 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.1350, expected range: 0.1414 0.1645
Atmospheric Motion Vector
All METEOSAT-11 AMV IR3 ALL LAYERS Global : all data missing
Severe: obs_number=0, expected range: 487.50 5186.21
METEOSAT-8 AMV VIS2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA : out of range
Considerable: obs_number=2810.0000, expected range: 1309.7636 2470.8079
HIMAWARI-8 AMV CLOUDY WV2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-60 : out of range
Considerable: obs_number=5321.0000, expected range: 3429.3781 4788.0504
NPP VIIRS AMV IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA) : out of range
Slight: obs_number=357.0000, expected range: 150.2521 337.4622
Geostationary CSR
METEOSAT-8 SEVIRI RADIANCES CHANNEL 2 : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=52545.0000, expected range: 26253.9423 38473.9149
METEOSAT-8 SEVIRI RADIANCES CHANNEL 3 : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=30014.0000, expected range: 13165.9103 21087.3754
All METEOSAT-11 SEVIRI ALL CHANNELS Global : all data missing
Severe: obs_number=0, expected range: 30882.42 43391.01
Radiosondes
LAND TEMP TEMPERATURE (K) 30758 PRESSURE LAYER 900-1200 (HPA) : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8054, expected range: -0.3680 0.7500
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 84 : all data missing
Severely_persistent: obs_number=0, expected range: 117.39 138.61
LAND TEMP TEMPERATURE (K) 30230 PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.0947, expected range: 0.0000 2.3178
Severe: avg_pge=0.8881, expected range: -0.2758 0.3364
LAND TEMP WIND VECTOR DIFF (M/S) 32389 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.9211, expected range: 0.1780 5.8505
LAND TEMP WIND VECTOR DIFF (M/S) 24688 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=15.1154, expected range: 0.0000 5.7866
LAND TEMP WIND VECTOR DIFF (M/S) 24688 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_pge=0.8174, expected range: -0.6430 0.7500
HIGH RESO LAND TEMP Q (G/KG) 72235 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=2.4258, expected range: 0.0000 1.1508
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 67 : all data missing
Severe: obs_number=0, expected range: 42.62 164.05
All HIGH RESO LAND TEMP ALL LAYERS Indian Ocean Tropica : all data missing
Severe: obs_number=0, expected range: 14.36 377.86
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 29 : all data missing
Severe: obs_number=0, expected range: 82.13 91.07
LAND TEMP TEMPERATURE (K) PRESSURE LAYER 600-900 (HPA) : out of range
Considerable: obs_number=135.0000, expected range: 82.1566 123.2720
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 900-1200 (HPA) : out of range
Considerable: obs_number=372.0000, expected range: 233.3354 340.9503
amdar
WIGOS AMDAR TEMPERATURE (K) EU4994 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=10.4550, expected range: 0.0000 2.2637
Severe: avg_pge=0.8971, expected range: -0.0507 0.0648
WIGOS AMDAR TEMPERATURE (K) EU6620 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.8735, expected range: -0.6591 0.7500
WIGOS AMDAR WIND VECTOR DIFF (M/S) EU4994 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=22.3756, expected range: 0.0000 7.8590
Severe: avg_pge=0.8534, expected range: -0.2077 0.3740
synop
BUFR LAND SYNOP RH2M (%) 81739 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9767, expected range: -1.6211 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71021 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8566, expected range: -1.1770 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 81002 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8357, expected range: -0.7442 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24585 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8327, expected range: -0.0064 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71648 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9033, expected range: -1.5960 0.7500
MANUAL LAND SYNOP RH2M (%) 37871 : out of range
Severe: rms_fgdepar=31.7845, expected range: 1.5695 17.1638
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 41600 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=499.6478, expected range: 0.0000 229.8960
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 36104 : out of range
Severe: avg_pge=0.8155, expected range: 0.5024 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 41624 : out of range
Severe: rms_fgdepar=715.8477, expected range: 0.0000 331.7175
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 67225 : out of range
Severe: rms_fgdepar=389.6911, expected range: 0.0000 268.4200
Severe: avg_pge=0.8009, expected range: -0.7019 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42469 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=721.6182, expected range: 0.0000 328.3265
Severe: avg_pge=0.9183, expected range: -1.3022 0.7500
BUFR LAND SYNOP RH2M (%) 72797 : out of range
Severe: rms_fgdepar=31.8263, expected range: 0.0000 14.6440
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71883 : out of range
Severe: rms_fgdepar=398.6363, expected range: 0.0000 269.0559
Severe: avg_pge=0.8073, expected range: -0.3344 0.5241
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71246 : out of range
Severe: rms_fgdepar=459.7343, expected range: 0.0000 149.7190
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71966 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8166, expected range: -1.0723 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 04109 : out of range
Severe: avg_pge=0.8395, expected range: -0.6601 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61699 : out of range
Severe: rms_fgdepar=524.3180, expected range: 17.2270 65.0242
ship
SHIP WIND VECTOR DIFF (M/S) : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=22.2948, expected range: 0.3078 7.2817
Severely_persistent: rms_fgdepar=22.2948, expected range: 0.0000 10.7918
Severely_persistent: avg_pge=0.9311, expected range: -0.3831 0.7500
SHIP SURFACE PRESSURE (PA) : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8977, expected range: -1.0002 0.7500
Severely_persistent: avg_pge=0.8977, expected range: -1.0183 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) MERFR14 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8113, expected range: -0.4637 0.7500
SHIP SURFACE PRESSURE (PA) C6FV8 : out of range
Severe: avg_pge=0.8009, expected range: -1.2724 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 5601519 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8519, expected range: -1.1750 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401562 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=305.1049, expected range: 0.0000 135.6751
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401564 : out of range
Severe: rms_fgdepar=330.3647, expected range: 0.0000 145.8030
Severe: avg_pge=0.8390, expected range: -0.4571 0.5662
DRIFTING BUOYS SURFACE PRESSURE (PA) 7401507 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8655, expected range: -0.7825 0.7500
metar
METAR SURFACE PRESSURE (PA) HCMM : out of range
Severe: rms_fgdepar=507.7380, expected range: 0.0000 124.8184
METAR SURFACE PRESSURE (PA) CYCP : out of range
Severe: rms_fgdepar=400.3021, expected range: 0.0000 202.2292
METAR SURFACE PRESSURE (PA) MDPP : out of range
Severe: rms_fgdepar=494.5834, expected range: 0.0000 201.8874
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71001 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8694, expected range: 0.0983 1.1805
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71195 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8710, expected range: 0.1159 1.1836
MANUAL LAND SYNOP 2M TEMPERATURE (K) 44232 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8114, expected range: 0.6116 0.9025
MANUAL LAND SYNOP 2M TEMPERATURE (K) 25627 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8274, expected range: -0.2569 1.4444
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24477 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8123, expected range: 0.3921 1.0382
LAND TEMP 2M TEMPERATURE (K) 30372 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8302, expected range: -0.1220 1.5182
LAND TEMP 2M TEMPERATURE (K) 56137 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8795, expected range: 0.4299 1.0829
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.9125, expected range: 0.6657 1.0023
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02890 : out of range
Severe: rms_fgdepar=10.6712, expected range: 0.0000 5.2453
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 68392 : out of range
Severe: avg_est_pge=0.8196, expected range: -0.0341 0.8936
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71568 : out of range
Severe: rms_fgdepar=12.2922, expected range: 1.9030 5.4792
MANUAL LAND SYNOP 2M TEMPERATURE (K) 22100 : out of range
Severe: rms_fgdepar=13.9551, expected range: 0.0000 8.3245
Severe: avg_est_pge=0.8045, expected range: -0.4080 0.6410
MANUAL LAND SYNOP 2M TEMPERATURE (K) 30372 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8046, expected range: -0.0181 1.1714
MANUAL LAND SYNOP 2M TEMPERATURE (K) 44203 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8167, expected range: 0.6650 0.8461
MANUAL LAND SYNOP 2M TEMPERATURE (K) 44284 : out of range
Severe: avg_est_pge=0.8062, expected range: 0.2547 0.9056
MANUAL LAND SYNOP 2M TEMPERATURE (K) 25808 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8026, expected range: -0.0774 1.1247
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24898 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8091, expected range: -0.2422 1.1285
METAR 2M TEMPERATURE (K) CYDB : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8093, expected range: -0.4786 1.1938
METAR 2M TEMPERATURE (K) PAKT : out of range
Severe: rms_fgdepar=10.5388, expected range: 0.0000 6.0152
BUFR LAND SYNOP 2M TEMPERATURE (K) 02890 : out of range
Severe: rms_fgdepar=10.6846, expected range: 0.0000 5.3470
BUFR LAND SYNOP 2M TEMPERATURE (K) 71482 : out of range
Severe: rms_fgdepar=10.8914, expected range: 0.2302 4.9640
rh2m
AUTOMATIC LAND SYNOP RH2M (%) 15113 : out of range
Severe: rms_fgdepar=32.2592, expected range: 0.0000 14.5238
MANUAL LAND SYNOP RH2M (%) 83897 : out of range
Severe: rms_fgdepar=30.5280, expected range: 0.0000 17.3362