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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-15 12:00

amsua
NOAA-19/AMSUA RADIANCES CHANNEL 8 : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=1617.0000, expected range: 7544.2891 14799.7664
AQUA/AMSUA RADIANCES (8 channels affected) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=5789.0000, expected range: 8563.5056 11361.8998
iasi
METOP-A/IASI RADIANCES (62 channels affected) : out of range
Considerable: obs_number=10456.0000, expected range: 11497.1573 13858.8427
airs
AQUA/AIRS RADIANCES (255 channels affected) : out of range
Severe: obs_number=11483.0000, expected range: 17493.4931 21406.1180
AQUA/AIRS RADIANCES CHANNEL 174 : out of range
Considerable: avg_biascorr=-0.2657, expected range: -0.2432 -0.1805
AQUA/AIRS RADIANCES CHANNEL 175 : out of range
Considerable: avg_biascorr=-0.4117, expected range: -0.3743 -0.2790
atms
NPP/ATMS RADIANCES (16 channels affected) : out of range
Severe: avg_fgdepar=-0.1345, expected range: -0.0360 0.0544
Radiosondes
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
Severe: obs_number=56.0000, expected range: 96.0606 128.6453
amdar
AMDAR WIND VECTOR DIFF (M/S) ANZ281 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=21.3132, expected range: 0.0000 16.1991
Severe: avg_pge=0.8336, expected range: -0.7728 0.7500
WIGOS AMDAR WIND VECTOR DIFF (M/S) DIJX1DJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=19.8866, expected range: 0.0000 10.0954
WIGOS AMDAR TEMPERATURE (K) EPRWUWRA PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.8643, expected range: -0.5442 0.7500
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 47616 PRESSURE LAYER 600-900 : out of range
Severe: rms_fgdepar=18.8014, expected range: 0.0000 14.5765
Severe: avg_pge=0.8799, expected range: -0.5606 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10557 PRESSURE LAYER 600-900 : out of range
Severe: rms_fgdepar=17.2430, expected range: 0.0000 15.6200
Severe: avg_pge=0.8241, expected range: -0.2235 0.7500
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40629 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8241, expected range: -1.5210 0.7500
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9983, expected range: -1.0641 0.7500
MANUAL LAND SYNOP RH2M (%) 42177 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8064, expected range: -1.4786 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 72672 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8202, expected range: -1.3738 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 78896 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8370, expected range: 0.3988 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30637 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8733, expected range: -1.2435 0.7500
BUFR LAND SYNOP RH2M (%) 81788 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9999, expected range: -0.1089 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 68257 : out of range
Severe: rms_fgdepar=22.3916, expected range: 0.0000 11.7717
AUTOMATIC LAND SYNOP RH2M (%) 41308 : out of range
Severe: avg_pge=0.9925, expected range: -1.1557 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42482 : out of range
Severe: rms_fgdepar=666.4564, expected range: 0.0000 237.0423
Severe: avg_pge=0.9126, expected range: -0.9600 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 87453 : out of range
Severe: rms_fgdepar=313.8752, expected range: 0.0000 146.1408
Severe: avg_pge=0.8120, expected range: -0.1502 0.2155
MANUAL LAND SYNOP RH2M (%) 76113 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8612, expected range: -1.4577 0.7500
MANUAL LAND SYNOP RH2M (%) 38927 : out of range
Severe: rms_fgdepar=30.7826, expected range: 0.0000 12.5412
BUFR LAND SYNOP SURFACE PRESSURE (PA) 14308 : out of range
Severe: rms_fgdepar=332.1628, expected range: 0.0000 96.3777
BUFR LAND SYNOP RH2M (%) 72320 : out of range
Severe: rms_fgdepar=16.1884, expected range: 0.0000 22.7544
Severe: avg_pge=0.9435, expected range: -0.0020 0.0085
BUFR LAND SYNOP RH2M (%) 08223 : out of range
Severe: rms_fgdepar=43.4498, expected range: 0.0000 16.5932
Severe: avg_pge=0.9720, expected range: 0.0013 0.0048
BUFR LAND SYNOP RH2M (%) 40179 : out of range
Severe: rms_fgdepar=29.3361, expected range: 0.0000 12.8719
BUFR LAND SYNOP RH2M (%) 61489 : out of range
Severe: avg_pge=0.9831, expected range: -0.8761 0.7500
ship
SHIP SURFACE PRESSURE (PA) 9V9450 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8361, expected range: 0.3747 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3047 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8154, expected range: -1.0163 0.7500
SHIP SURFACE PRESSURE (PA) C6KD8 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8282, expected range: -1.4650 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8055, expected range: -0.0331 0.7500
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 46035 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=18.5941, expected range: 0.0000 3.0513
Severe: avg_pge=0.9055, expected range: -0.1588 0.2613
SHIP SURFACE PRESSURE (PA) 9V9400 : out of range
Severe: avg_pge=0.9043, expected range: -0.9375 0.7500
SHIP SURFACE PRESSURE (PA) OVZV2 : out of range
Severe: rms_fgdepar=398.7157, expected range: 0.0000 259.4154
Severe: avg_pge=0.8331, expected range: -1.0621 0.7500
SHIP SURFACE PRESSURE (PA) LAOX5 : out of range
Severe: avg_pge=0.8439, expected range: -1.2650 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801652 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=655.5317, expected range: 0.0000 322.4981
Severe: avg_pge=0.9234, expected range: -0.9988 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6202672 : out of range
Severe: avg_pge=0.8151, expected range: -1.4613 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1402556 : out of range
Severe: rms_fgdepar=692.1429, expected range: 0.0000 390.0192
Severe: avg_pge=0.9235, expected range: -0.9889 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701566 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8147, expected range: -0.8196 0.7500
metar
METAR SURFACE PRESSURE (PA) OIBV : out of range
Severe: rms_fgdepar=428.5306, expected range: 0.0000 221.7326
AUTOMATIC METAR SURFACE PRESSURE (PA) ENLA : out of range
Severe: avg_pge=0.8139, expected range: -0.9594 0.7500
t2m
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8079, expected range: 0.1680 1.2054
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8427, expected range: 0.2235 1.1335
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 04260 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.2123, expected range: 0.0000 4.1898
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 68098 : out of range
Severe: rms_fgdepar=12.0747, expected range: 0.0000 4.6026
MANUAL LAND SYNOP 2M TEMPERATURE (K) 56106 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8233, expected range: 0.1666 1.0488
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24449 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.1005, expected range: 0.0000 4.0688
METAR 2M TEMPERATURE (K) SBSC : out of range
Severe: rms_fgdepar=8.3457, expected range: 0.0000 3.9142
METAR 2M TEMPERATURE (K) LSMD : out of range
Severe: rms_fgdepar=7.7098, expected range: 0.0000 3.8765
METAR 2M TEMPERATURE (K) PALP : out of range
Severe: rms_fgdepar=9.0476, expected range: 0.0000 3.1093
METAR 2M TEMPERATURE (K) UGMS : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8038, expected range: 0.2878 1.0544
LAND TEMP 2M TEMPERATURE (K) 72582 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8360, expected range: -0.3297 1.1769
rh2m
BUFR LAND SYNOP RH2M (%) : out of range
Severe: obs_number=1734.0000, expected range: 1970.6570 2187.4511