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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-15 12:00

amsua
METOP-A/AMSUA RADIANCES CHANNEL 11 : out of range
3 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.6765, expected range: -0.1634 0.4945
mhs
ALLSKY METOP-A/MHS RADIANCES CHANNEL 4 : out of range
Severe: obs_number=11857.0000, expected range: 14176.5669 17065.2169
ALLSKY METOP-A/MHS RADIANCES CHANNEL 3 : out of range
Considerable: obs_number=12049.0000, expected range: 14215.2211 17492.5738
ALLSKY METOP-A/MHS RADIANCES CHANNEL 2 : out of range
Slight: obs_number=19249.0000, expected range: 20256.8277 24367.0642
Radiosondes
LAND TEMP Q (G/KG) 54374 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.9697, expected range: -0.0057 0.0144
LAND TEMP WIND VECTOR DIFF (M/S) 26477 PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8013, expected range: -0.6009 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 20292 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=17.3626, expected range: 0.0000 7.9466
All LAND TEMP WIND VECTOR DIFF (M/S) ALL LAYERS WMO BLOCK 16 : all data missing
Severe: obs_number=0, expected range: 36.28 117.94
LAND TEMP TEMPERATURE (K) 34467 PRESSURE LAYER 0-300 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=6.2199, expected range: 0.0000 2.5089
HIGH RESO LAND TEMP Q (G/KG) (4 pressure layers affected) : out of range
Severe: obs_number=66.0000, expected range: 112.7974 150.0915
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (3 pressure layers affected : out of range
Severe: obs_number=285.0000, expected range: 362.5474 394.1585
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
Severe: obs_number=285.0000, expected range: 371.0704 386.5766
HIGH RESO SEA TEMP Q (G/KG) PRESSURE LAYER 0-300 (HPA) : out of range
Slight: rms_fgdepar=0.0194, expected range: 0.0000 0.0175
amdar
WIGOS AMDAR TEMPERATURE (K) Z2JEIERA PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=6.3090, expected range: 0.0000 2.8147
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=3.7037, expected range: 0.0000 0.0000
MANUAL LAND SYNOP RH2M (%) 63962 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9986, expected range: -1.8467 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94866 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=419.3024, expected range: -184.9487 276.8747
Severely_persistent: avg_pge=0.8866, expected range: -0.2161 0.2936
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40680 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=471.0050, expected range: 0.0000 186.1670
Severe: avg_pge=0.8637, expected range: -0.4322 0.5455
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 60780 : out of range
Severe: rms_fgdepar=339.0392, expected range: 0.0000 249.1446
Severe: avg_pge=0.8112, expected range: -0.7062 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 60481 : out of range
Severe: rms_fgdepar=361.3693, expected range: 0.0000 178.9906
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86128 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8421, expected range: -1.0720 0.7500
MANUAL LAND SYNOP RH2M (%) 64463 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=32.3852, expected range: 0.0000 24.4443
Severe: avg_pge=0.9497, expected range: -0.0092 0.0183
MANUAL LAND SYNOP RH2M (%) 51777 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9968, expected range: -1.9972 0.7500
MANUAL LAND SYNOP RH2M (%) 38328 : out of range
Severe: rms_fgdepar=15.1418, expected range: 0.0000 6.9178
BUFR LAND SYNOP SURFACE PRESSURE (PA) 91520 : out of range
Severe: rms_fgdepar=648.2621, expected range: 0.0000 146.7558
BUFR LAND SYNOP SURFACE PRESSURE (PA) 22951 : out of range
Severe: rms_fgdepar=412.3942, expected range: 0.0000 107.7627
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30526 : out of range
Severe: rms_fgdepar=307.1390, expected range: 0.0000 169.9593
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61297 : out of range
Severe: avg_pge=0.8657, expected range: -0.7504 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61697 : out of range
Severe: rms_fgdepar=456.2948, expected range: 0.0000 143.9822
Severe: avg_pge=0.8656, expected range: -0.2262 0.2827
BUFR LAND SYNOP RH2M (%) 72270 : out of range
Severe: rms_fgdepar=34.8232, expected range: 0.0000 19.4841
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) 44058 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8340, expected range: 0.1444 0.7500
SHIP SURFACE PRESSURE (PA) D5HF2 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9232, expected range: 0.2026 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9474, expected range: 0.3155 0.7500
SHIP SURFACE PRESSURE (PA) 9V3820 : out of range
Severe: avg_pge=0.8544, expected range: -1.2349 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3731 : out of range
Severe: avg_pge=0.9239, expected range: -0.9171 0.7500
SHIP SURFACE PRESSURE (PA) C6XC2 : out of range
Severe: avg_pge=0.8009, expected range: -0.9259 0.7500
ABBREVIATED SHIP SURFACE PRESSURE (PA) WSAF : out of range
Severe: rms_fgdepar=330.9379, expected range: 0.0000 107.1472
BUFR SHIP SYNOP SURFACE PRESSURE (PA) LF4Q : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=369.8501, expected range: 0.0000 198.3280
Severe: avg_pge=0.8364, expected range: -0.7301 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 0022683 : out of range
Severe: avg_pge=0.8618, expected range: -0.6683 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 5301764 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=329.1837, expected range: 0.0000 144.7002
DRIFTING BUOYS SURFACE PRESSURE (PA) 4802008 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=446.7370, expected range: 0.0000 222.8460
Severe: avg_pge=0.8623, expected range: -0.7817 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
3 times in the last 10 days for at least one item
Severe: avg_biascorr=-14.8000, expected range: 0.0000 0.0000
metar
METAR SURFACE PRESSURE (PA) FAWB : out of range
Severe: rms_fgdepar=374.2306, expected range: 0.0000 185.6471
METAR SURFACE PRESSURE (PA) OAJL : out of range
Severe: rms_fgdepar=369.5720, expected range: 0.0000 169.5477
snow
MANUAL LAND SYNOP SNOW (CM) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=1.3052, expected range: -0.0724 0.0834
Severely_persistent: rms_fgdepar=8.7556, expected range: -0.8980 1.1441
BUFR LAND SYNOP SNOW (CM) : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=0.0981, expected range: 0.0000 0.0000
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89734 : out of range
Severe: avg_est_pge=0.8070, expected range: -0.1050 1.1488
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89799 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8101, expected range: 0.2397 1.1154
METAR 2M TEMPERATURE (K) KFFO : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=14.7460, expected range: 0.0000 6.8780
BUFR LAND SYNOP 2M TEMPERATURE (K) 08077 : out of range
Severe: rms_fgdepar=18.6493, expected range: 0.0000 5.1845
Severe: avg_est_pge=0.8650, expected range: -0.1888 0.4241
rh2m
BUFR LAND SYNOP RH2M (%) : out of range
Severe: obs_number=55.0000, expected range: 66.0000 66.0000