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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-08-17 00:00

amsua
METOP-A/AMSUA RADIANCES CHANNEL 3 : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=2155.0000, expected range: 3242.1746 5366.8689
cris
NPP/CRIS RADIANCES (118 channels affected) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.2572, expected range: 0.1671 0.2148
NPP/CRIS RADIANCES (143 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=9770.0000, expected range: 4683.5440 6275.4324
NPP/CRIS RADIANCES (23 channels affected) : out of range
Severe: stdev_fgdepar=3.2905, expected range: 0.1915 0.2784
NOAA20/CRIS RADIANCES (12 channels affected) : out of range
Considerable: obs_number=1594.0000, expected range: 1806.3644 2605.5245
mhs
ALLSKY METOP-A/MHS RADIANCES CHANNEL 3 : out of range
Considerable: stdev_norm_fgdepar=0.8430, expected range: 0.6180 0.7932
Geostationary CSR
GOES-15/IMAGER RADIANCES CHANNEL 2 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=123404.0000, expected range: 17210.1279 35582.4511
GOES-15/IMAGER RADIANCES CHANNEL 3 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: obs_number=40798.0000, expected range: 3372.6572 15436.8165
GOES-16/ABI RADIANCES CHANNEL 2 : out of range
Considerable: obs_number=64320.0000, expected range: 79482.4193 103124.2293
GOES-16/ABI RADIANCES CHANNEL 3 : out of range
Considerable: obs_number=64323.0000, expected range: 79545.0255 103163.1907
GOES-16/ABI RADIANCES CHANNEL 4 : out of range
Considerable: obs_number=64521.0000, expected range: 79712.2657 103334.3289
Radiosondes
LAND TEMP WIND VECTOR DIFF (M/S) 52866 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=21.2157, expected range: 0.0000 11.5557
Severe: avg_pge=0.8761, expected range: -0.4679 0.5911
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
Considerable: obs_number=67.0000, expected range: 103.5634 176.3190
amdar
WIGOS AMDAR TEMPERATURE (K) PMGEIRJA (2 pressure layers affected) : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=6.5986, expected range: 0.0000 1.3034
WIGOS AMDAR TEMPERATURE (K) PMGEIRJA PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8402, expected range: -0.6427 0.6984
WIGOS AMDAR WIND VECTOR DIFF (M/S) LG2EIERA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.4933, expected range: 0.0000 8.6851
WIGOS AMDAR WIND VECTOR DIFF (M/S) N4DUIERA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=19.5728, expected range: 0.0000 9.5025
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43133 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9001, expected range: 0.5298 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42473 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8481, expected range: -0.6874 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42078 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9107, expected range: -0.7650 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 41301 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8599, expected range: -0.8670 0.7500
MANUAL LAND SYNOP RH2M (%) 76471 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9608, expected range: -1.2526 0.7500
MANUAL LAND SYNOP RH2M (%) 63971 : out of range
Severe: rms_fgdepar=43.4278, expected range: 0.0000 33.5995
Severe: avg_pge=0.9867, expected range: -0.0662 0.0860
MANUAL LAND SYNOP RH2M (%) 94463 : out of range
Severe: avg_pge=0.9137, expected range: -0.6162 0.7306
MANUAL LAND SYNOP RH2M (%) 40948 : out of range
Severe: avg_pge=0.8786, expected range: -0.2387 0.3315
MANUAL LAND SYNOP RH2M (%) 68098 : out of range
Severe: rms_fgdepar=62.8208, expected range: -30.8805 44.6875
Severe: avg_pge=0.9668, expected range: -1.1123 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43025 : out of range
Severe: rms_fgdepar=600.3746, expected range: 0.0000 203.7332
Severe: avg_pge=0.8953, expected range: -0.9815 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 37787 : out of range
Severe: rms_fgdepar=491.3550, expected range: 0.0000 368.1671
Severe: avg_pge=0.8650, expected range: -0.5122 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
Severe: obs_number=133.0000, expected range: 100.7291 107.4931
BUFR LAND SYNOP RH2M (%) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=167.0000, expected range: 189.6505 205.7613
BUFR LAND SYNOP RH2M (%) 94463 : out of range
Severe: avg_pge=0.9827, expected range: -0.6350 0.7500
BUFR LAND SYNOP RH2M (%) 16648 : out of range
Severe: rms_fgdepar=47.7702, expected range: 0.0000 39.1021
Severe: avg_pge=0.9951, expected range: -0.1313 0.1580
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61630 : out of range
Severe: rms_fgdepar=612.7315, expected range: 0.0000 286.8844
BUFR LAND SYNOP SURFACE PRESSURE (PA) 81870 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=701.0504, expected range: 0.0000 176.1498
Severe: avg_pge=0.9418, expected range: 0.1326 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 81982 : out of range
Severe: rms_fgdepar=640.0157, expected range: 0.0000 67.3890
ship
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 62140 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8742, expected range: -1.2733 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) ATVK : out of range
9 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=577.2017, expected range: 0.0000 388.4664
Severely_persistent: avg_pge=0.9032, expected range: -1.3462 0.7500
SHIP SURFACE PRESSURE (PA) 9HJB9 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8610, expected range: -1.2135 0.7500
SHIP SURFACE PRESSURE (PA) BQHZ : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9087, expected range: -1.1486 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=0.9187, expected range: 0.0818 0.7500
SHIP SURFACE PRESSURE (PA) ZCDM6 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=1184.6836, expected range: 0.0000 984.7998
Severe: avg_pge=0.9446, expected range: -1.3459 0.7500
buoy
MOORED BUOYS SURFACE PRESSURE (PA) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: obs_number=71.0000, expected range: 101.0294 140.3824
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=-110.0000, expected range: 0.0000 0.0000
DRIFTING BUOYS SURFACE PRESSURE (PA) 7401502 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8339, expected range: -0.1404 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1402556 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=317.8690, expected range: 0.0000 121.8552
metar
METAR SURFACE PRESSURE (PA) LIRT : out of range
7 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=485.7037, expected range: 0.0000 150.5963
METAR SURFACE PRESSURE (PA) FZNA : out of range
Severe: rms_fgdepar=385.3196, expected range: 0.0000 171.8232
gbrad
GROUND-BASED RADAR WIND VECTOR DIFF (M/S) : out of range
8 times in the last 10 days for at least one item
Slight: obs_number=1083.0000, expected range: 1432.7100 3399.5329
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8520, expected range: 0.6978 0.9221
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8594, expected range: 0.6359 0.9778
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 04416 : out of range
Severe: avg_est_pge=0.8147, expected range: -0.2703 1.2238
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89606 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8176, expected range: 0.0625 1.2533
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89009 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8259, expected range: 0.2990 1.1265
METAR 2M TEMPERATURE (K) MPDA : out of range
Severe: rms_fgdepar=16.2124, expected range: 1.0134 3.8058
METAR 2M TEMPERATURE (K) EEKE : out of range
Severe: rms_fgdepar=8.7919, expected range: 0.0000 2.6428
METAR 2M TEMPERATURE (K) UMKK : out of range
Severe: rms_fgdepar=7.3533, expected range: 0.0000 3.5798
BUFR LAND SYNOP 2M TEMPERATURE (K) 89606 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8177, expected range: -0.0216 1.3026
rh2m
MANUAL LAND SYNOP RH2M (%) 62103 : out of range
Severe: rms_fgdepar=28.5240, expected range: 0.0000 15.1778
METAR RH2M (%) HESN : out of range
Severe: rms_fgdepar=17.9693, expected range: 0.0000 8.9645