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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-09 00:00

resat
NOAA-19/SBUV OZONE, TOP PRESSURE LAYER 0-1 (HPA) : out of range
3 times in the last 10 days for at least one item
Slight: obs_number=1938.0000, expected range: 2011.1031 2193.7024
Radiosondes
LAND TEMP WIND VECTOR DIFF (M/S) 20292 PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=30.7326, expected range: 0.0000 24.6634
Severe: avg_pge=0.9031, expected range: -1.1534 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 42369 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=17.5489, expected range: 0.0000 8.7779
Severe: avg_pge=0.8348, expected range: -0.3424 0.4535
amdar
WIGOS AMDAR TEMPERATURE (K) EEXKJFJA (3 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8887, expected range: -1.5771 0.7500
WIGOS AMDAR TEMPERATURE (K) MZXYCOZA (2 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8938, expected range: -1.8696 0.7500
WIGOS AMDAR TEMPERATURE (K) AUMZGNZA (2 pressure layers affected) : out of range
Severe: avg_pge=0.8846, expected range: -1.4484 0.7500
WIGOS AMDAR TEMPERATURE (K) AUMZGNZA PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=9.0849, expected range: 0.0000 2.2523
WIGOS AMDAR WIND VECTOR DIFF (M/S) VJ3H1DBA PRESSURE LAYER 300-600 (HP : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8698, expected range: -1.4182 0.7500
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10410 PRESSURE LAYER 600-900 : out of range
Severe: rms_fgdepar=15.1971, expected range: 0.0000 11.4466
Severe: avg_pge=0.8633, expected range: -0.6212 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10339 PRESSURE LAYER 600-900 : out of range
Severe: rms_fgdepar=16.9862, expected range: 0.0000 13.6438
Severe: avg_pge=0.8711, expected range: -0.6447 0.7500
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 82460 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8014, expected range: -0.3922 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27415 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8593, expected range: -0.5197 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 35167 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8746, expected range: -0.3988 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 82143 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8116, expected range: -0.8298 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 64756 : out of range
Severe: rms_fgdepar=742.5541, expected range: 0.0000 262.1723
Severe: avg_pge=0.9185, expected range: -0.8200 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 87688 : out of range
Severe: rms_fgdepar=816.5048, expected range: 0.0000 287.7800
Severe: avg_pge=0.9281, expected range: -1.0735 0.7500
MANUAL LAND SYNOP RH2M (%) 94324 : out of range
Severe: rms_fgdepar=33.9441, expected range: 0.0000 12.9488
MANUAL LAND SYNOP RH2M (%) 51765 : out of range
Severe: rms_fgdepar=17.9236, expected range: 0.0000 8.8368
MANUAL LAND SYNOP RH2M (%) 40016 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8775, expected range: -1.6083 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 63820 : out of range
Severe: rms_fgdepar=593.1826, expected range: 0.0000 107.2508
BUFR LAND SYNOP SURFACE PRESSURE (PA) 25062 : out of range
Severe: rms_fgdepar=313.5184, expected range: 0.0000 205.7177
Severe: avg_pge=0.8250, expected range: -0.7550 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48025 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=604.9237, expected range: 0.0000 244.6387
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94355 : out of range
Severe: rms_fgdepar=523.7720, expected range: 0.0000 140.1919
Severe: avg_pge=0.8744, expected range: 0.0000 0.0000
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27037 : out of range
Severe: rms_fgdepar=348.7329, expected range: 0.0000 83.8608
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94439 : out of range
Severe: avg_pge=0.8444, expected range: -1.3568 0.7500
BUFR LAND SYNOP RH2M (%) 40400 : out of range
Severe: avg_pge=0.9998, expected range: -1.8849 0.7500
BUFR LAND SYNOP RH2M (%) 94324 : out of range
Severe: rms_fgdepar=35.2676, expected range: 0.0000 14.4221
BUFR LAND SYNOP RH2M (%) 71125 : out of range
Severe: rms_fgdepar=20.0614, expected range: 0.0000 11.0406
BUFR LAND SYNOP RH2M (%) 15325 : out of range
Severe: rms_fgdepar=41.7578, expected range: 0.0000 19.1437
BUFR LAND SYNOP RH2M (%) 02629 : out of range
Severe: rms_fgdepar=55.0920, expected range: 0.0000 45.8400
Severe: avg_pge=0.9936, expected range: -0.6128 0.6851
ship
SHIP WIND VECTOR DIFF (M/S) MLTH5 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8424, expected range: -0.4528 0.7500
SHIP SURFACE PRESSURE (PA) OXSQ2 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8377, expected range: -1.1497 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8663, expected range: 0.1318 0.7500
SHIP SURFACE PRESSURE (PA) DFPI2 : out of range
Severe: rms_fgdepar=559.0227, expected range: 0.0000 261.5053
SHIP SURFACE PRESSURE (PA) OWIZ2 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8953, expected range: -1.3808 0.7500
SHIP SURFACE PRESSURE (PA) C6BR3 : out of range
Severe: rms_fgdepar=398.5651, expected range: 0.0000 225.7512
SHIP SURFACE PRESSURE (PA) WFLH : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8040, expected range: -0.2052 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801652 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=401.9363, expected range: 0.0000 187.0648
Severe: avg_pge=0.8118, expected range: -0.5540 0.7187
DRIFTING BUOYS SURFACE PRESSURE (PA) 2101634 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8826, expected range: -1.0916 0.7500
snow
BUFR LAND SYNOP SNOW (CM) : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.1307, expected range: -0.0415 0.0370
Severely_persistent: avg_fgdepar=-0.0079, expected range: -0.0029 0.0023
t2m
BUFR LAND SYNOP 2M TEMPERATURE (K) 27415 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8137, expected range: 0.4792 0.9837
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89625 : out of range
Severe: avg_est_pge=0.8020, expected range: -0.0599 1.1220
MANUAL LAND SYNOP 2M TEMPERATURE (K) 80084 : out of range
Severe: rms_fgdepar=8.7725, expected range: 0.0000 4.7367
MANUAL LAND SYNOP 2M TEMPERATURE (K) 25017 : out of range
Severe: rms_fgdepar=8.9164, expected range: 0.0000 2.6612
MANUAL LAND SYNOP 2M TEMPERATURE (K) 72677 : out of range
Severe: rms_fgdepar=8.9753, expected range: 0.0000 4.5186
METAR 2M TEMPERATURE (K) SCRD : out of range
Severe: rms_fgdepar=13.9114, expected range: 0.0000 5.3714
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8345, expected range: 0.0165 1.2560