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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-11 00:00

amsua
NOAA-19/AMSUA RADIANCES CHANNEL 3 : out of range
Considerable: obs_number=10524.0000, expected range: 11385.0716 14800.0337
NOAA-19/AMSUA RADIANCES (11 channels affected) : out of range
Considerable: obs_number=4065.0000, expected range: 4913.8514 6185.6621
atms
NOAA20/ATMS RADIANCES (7 channels affected) : out of range
Severe: obs_number=3806.0000, expected range: 3241.8041 3532.3102
Radiosondes
LAND TEMP TEMPERATURE (K) 42314 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=7.6421, expected range: 0.0000 4.6019
Severe: avg_pge=0.8842, expected range: -0.1326 0.2465
LAND TEMP TEMPERATURE (K) 30673 PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8873, expected range: -1.1897 0.7500
All HIGH RESO SEA TEMP TEMPERATURE (K) ALL LAYERS North Atlantic : all data missing
Severe: obs_number=0, expected range: 0.00 704.70
amdar
AMDAR WIND VECTOR DIFF (M/S) AU0149 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=24.5001, expected range: 0.0000 8.0989
Severe: avg_pge=0.8837, expected range: -0.3822 0.5268
WIGOS AMDAR Q (G/KG) DGNXL5RA PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.8137, expected range: -1.2246 0.7500
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 89625 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=417.5986, expected range: 0.0000 226.7832
Severely_persistent: avg_pge=0.8477, expected range: -1.0816 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48921 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8746, expected range: -1.0555 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48952 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8265, expected range: -1.5196 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48927 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8606, expected range: -1.5161 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 84370 : out of range
Severe: rms_fgdepar=696.7531, expected range: 0.0000 129.7454
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42452 : out of range
Severe: rms_fgdepar=524.6535, expected range: 0.0000 218.3440
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 62008 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=329.8958, expected range: 0.0000 264.9425
Severe: avg_pge=0.8180, expected range: -1.1964 0.7500
MANUAL LAND SYNOP RH2M (%) 63671 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=22.5427, expected range: 0.0000 11.2241
MANUAL LAND SYNOP RH2M (%) 76122 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9848, expected range: -0.9916 0.7500
MANUAL LAND SYNOP RH2M (%) 65462 : out of range
Severe: rms_fgdepar=25.3315, expected range: 0.0000 12.3118
MANUAL LAND SYNOP RH2M (%) 40016 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9645, expected range: -1.5224 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 08024 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=502.3065, expected range: 0.0000 84.0679
Severe: avg_pge=0.9295, expected range: -0.3203 0.5096
BUFR LAND SYNOP RH2M (%) 94451 : out of range
Severe: avg_pge=0.8502, expected range: -1.3309 0.7500
BUFR LAND SYNOP RH2M (%) 71346 : out of range
Severe: rms_fgdepar=25.7540, expected range: 0.0000 14.5342
BUFR LAND SYNOP RH2M (%) 94439 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9997, expected range: -1.2315 0.7500
ship
SHIP SURFACE PRESSURE (PA) 9V9498 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8320, expected range: -1.2871 0.7500
SHIP WIND VECTOR DIFF (M/S) V7FJ8 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8178, expected range: -0.5574 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=0.9319, expected range: 0.4754 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) 44058 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8156, expected range: -0.3396 0.7500
SHIP SURFACE PRESSURE (PA) V7NK6 : out of range
Severe: avg_pge=0.8587, expected range: -0.9366 0.7500
SHIP SURFACE PRESSURE (PA) 9V9408 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8609, expected range: -1.0720 0.7500
SHIP SURFACE PRESSURE (PA) V7FJ8 : out of range
Severe: avg_pge=0.8304, expected range: -0.8592 0.7500
SHIP SURFACE PRESSURE (PA) WTOI : out of range
Severe: rms_fgdepar=511.0814, expected range: 0.0000 373.0489
Severe: avg_pge=0.8681, expected range: -0.6620 0.7500
buoy
MOORED BUOYS SURFACE PRESSURE (PA) 6101001 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9079, expected range: -0.4301 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401575 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=332.6642, expected range: 0.0000 117.4037
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
6 times in the last 10 days for at least one item
Slight: obs_number=8618.0000, expected range: 8983.6499 10166.6930
metar
METAR SURFACE PRESSURE (PA) FNKU : out of range
Severe: rms_fgdepar=706.7292, expected range: 0.0000 266.9780
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8054, expected range: 0.6585 0.9255
MANUAL LAND SYNOP 2M TEMPERATURE (K) 86285 : out of range
Severe: rms_fgdepar=10.8736, expected range: 0.0000 4.7183
MANUAL LAND SYNOP 2M TEMPERATURE (K) 72218 : out of range
Severe: rms_fgdepar=8.2099, expected range: 0.0000 3.5018
MANUAL LAND SYNOP 2M TEMPERATURE (K) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=310.0000, expected range: 342.6473 368.9203
METAR 2M TEMPERATURE (K) KOSH : out of range
Severe: rms_fgdepar=8.8687, expected range: 0.0000 4.3888
METAR 2M TEMPERATURE (K) KPDK : out of range
Severe: rms_fgdepar=9.4053, expected range: 0.1753 5.1426
METAR 2M TEMPERATURE (K) MMSL : out of range
Severe: rms_fgdepar=8.1861, expected range: 0.0976 2.5292
METAR 2M TEMPERATURE (K) UOOO : out of range
Severe: rms_fgdepar=8.8710, expected range: 0.0000 4.7674
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
Considerable: obs_number=307.0000, expected range: 327.9676 370.2486
BUFR LAND SYNOP RH2M (%) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=526.0000, expected range: 654.5799 897.2095