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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-10 12:00

gpsro
METOP-A/GRAS SETTING (14 impact heights affected) : out of range
Slight: obs_number=913.0000, expected range: 1003.7032 1415.3494
METOP-A/GRAS RISING (22 impact heights affected) : out of range
Slight: obs_number=1693.0000, expected range: 1760.5294 2430.9300
Geostationary CSR
GOES-15/IMAGER RADIANCES CHANNEL 3 : out of range
Slight: obs_number=7778.0000, expected range: 13444.2444 44461.3722
Radiosondes
LAND TEMP WIND VECTOR DIFF (M/S) 23330 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=23.4623, expected range: 0.1125 4.6042
Severe: avg_pge=0.8712, expected range: -0.1439 0.1957
LAND TEMP TEMPERATURE (K) 35700 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=6.5402, expected range: 0.0096 1.8271
Severe: avg_pge=0.8238, expected range: -0.3086 0.6092
LAND TEMP Q (G/KG) 59758 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=8.0102, expected range: 0.0000 3.3969
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (3 pressure layers affected : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=487.0000, expected range: 657.3338 713.6662
HIGH RESO LAND TEMP TEMPERATURE (K) 72634 PRESSURE LAYER 900-1200 (HPA : out of range
Severe: avg_pge=0.8888, expected range: -0.2515 0.3389
HIGH RESO LAND TEMP Q (G/KG) (4 pressure layers affected) : out of range
4 times in the last 10 days for at least one item
Severe: obs_number=349.0000, expected range: 465.3027 514.3223
LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
Considerable: rms_fgdepar=2.5098, expected range: 0.6471 1.8558
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 300-600 (HPA) : out of range
2 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.1978, expected range: 0.0123 0.1233
HIGH RESO SEA TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA) : out of range
Slight: avg_fgdepar=3.9168, expected range: 1.0248 3.3768
amdar
WIGOS AMDAR Q (G/KG) XWGY0OZA PRESSURE LAYER 900-1200 (HPA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9967, expected range: -0.9991 0.7500
WIGOS AMDAR Q (G/KG) BWWUOGBA PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.9748, expected range: -0.7947 0.7500
synop
AUTOMATIC LAND SYNOP RH2M (%) 66325 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=1.0000, expected range: 0.1460 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 68362 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=530.5432, expected range: 0.0000 99.7673
Severely_persistent: avg_pge=0.8998, expected range: -1.0059 0.7500
MANUAL LAND SYNOP RH2M (%) 63962 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=54.3129, expected range: 0.0000 38.6431
Severely_persistent: avg_pge=0.9999, expected range: -1.4632 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 35167 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9880, expected range: -1.6237 0.7500
MANUAL LAND SYNOP RH2M (%) 62120 : out of range
Severe: avg_pge=0.9949, expected range: -1.0909 0.7500
MANUAL LAND SYNOP RH2M (%) 83363 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9975, expected range: -0.7016 0.7500
MANUAL LAND SYNOP RH2M (%) 40016 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9997, expected range: -1.8043 0.7500
MANUAL LAND SYNOP RH2M (%) 42886 : out of range
Severe: avg_pge=0.8823, expected range: -0.0556 0.0691
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76220 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=604.4119, expected range: 0.0000 201.8443
Severe: avg_pge=0.8671, expected range: -1.3445 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 62011 : out of range
Severe: rms_fgdepar=385.9127, expected range: 0.0000 204.7907
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 85345 : out of range
Severe: rms_fgdepar=732.0910, expected range: 0.0000 187.4039
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42456 : out of range
Severe: avg_pge=0.8767, expected range: -1.1474 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40676 : out of range
Severe: rms_fgdepar=300.6712, expected range: 0.0000 84.7514
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 62008 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=404.4091, expected range: 0.0000 176.8407
Severe: avg_pge=0.8340, expected range: -0.9652 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83479 : out of range
Severe: rms_fgdepar=429.2228, expected range: 0.0000 168.7020
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0000, expected range: -6.1726 -2.8492
BUFR LAND SYNOP RH2M (%) 07630 : out of range
Severe: rms_fgdepar=30.2589, expected range: 0.0000 15.2205
BUFR LAND SYNOP RH2M (%) 07635 : out of range
Severe: rms_fgdepar=32.8208, expected range: 0.0000 14.5359
BUFR LAND SYNOP RH2M (%) 07747 : out of range
Severe: rms_fgdepar=32.9375, expected range: 0.0000 14.3666
BUFR LAND SYNOP RH2M (%) 81788 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8953, expected range: -0.1194 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 25922 : out of range
Severe: rms_fgdepar=412.1238, expected range: 0.0000 103.3485
BUFR LAND SYNOP SURFACE PRESSURE (PA) 08352 : out of range
Severe: rms_fgdepar=538.0409, expected range: 0.0000 218.4117
Severe: avg_pge=0.9247, expected range: -1.1080 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24763 : out of range
Severe: rms_fgdepar=369.8677, expected range: 0.0000 275.9404
Severe: avg_pge=0.8242, expected range: -0.9904 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 08024 : out of range
Severe: rms_fgdepar=571.0868, expected range: 0.0000 99.1808
Severe: avg_pge=0.9352, expected range: -0.2020 0.2712
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24684 : out of range
Severe: rms_fgdepar=562.9099, expected range: 0.0000 235.5480
BUFR LAND SYNOP SURFACE PRESSURE (PA) 08166 : out of range
Severe: rms_fgdepar=317.1825, expected range: 0.0000 180.2970
Severe: avg_pge=0.8402, expected range: -0.6027 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30637 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8324, expected range: -1.2308 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=568.0000, expected range: 745.6884 858.0894
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) 44058 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8246, expected range: -0.3647 0.7500
SHIP SURFACE PRESSURE (PA) 9V8503 : out of range
Severe: avg_pge=0.8372, expected range: -0.9676 0.7500
SHIP SURFACE PRESSURE (PA) VRNL8 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8604, expected range: -0.9870 0.7500
SHIP WIND VECTOR DIFF (M/S) DFDE2 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9097, expected range: -0.2432 0.7500
SHIP WIND VECTOR DIFF (M/S) BATFR33 : out of range
Severe: rms_fgdepar=19.9730, expected range: 0.0000 9.4470
Severe: avg_pge=0.8312, expected range: -0.6856 0.7500
buoy
MOORED BUOYS SURFACE PRESSURE (PA) 6101001 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9035, expected range: -0.4473 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401575 : out of range
Severe: rms_fgdepar=321.5904, expected range: 0.0000 119.4238
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
5 times in the last 10 days for at least one item
Slight: obs_number=8650.0000, expected range: 8952.3906 10184.6649
metar
METAR SURFACE PRESSURE (PA) LLHA : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=539.1015, expected range: 0.0000 165.1879
Severe: avg_pge=0.8207, expected range: -0.1378 0.2011
METAR SURFACE PRESSURE (PA) HKWJ : out of range
Severe: rms_fgdepar=374.1628, expected range: 0.0000 161.5635
t2m
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
9 times in the last 10 days for at least one item
Severely_persistent: obs_number=77.0000, expected range: 63.4393 69.1062
MANUAL LAND SYNOP 2M TEMPERATURE (K) 83813 : out of range
Severe: rms_fgdepar=7.0653, expected range: 0.0000 3.8233
MANUAL LAND SYNOP 2M TEMPERATURE (K) 29874 : out of range
Severe: rms_fgdepar=11.3307, expected range: 0.0000 5.8635
METAR 2M TEMPERATURE (K) SCTE : out of range
Severe: rms_fgdepar=7.9130, expected range: 0.0000 4.1315
METAR 2M TEMPERATURE (K) OIGK : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8012, expected range: 0.3717 0.9353
METAR 2M TEMPERATURE (K) KDVT : out of range
Severe: rms_fgdepar=7.7588, expected range: 0.3427 3.4780
rh2m
MANUAL LAND SYNOP RH2M (%) 83813 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=35.0743, expected range: 0.0000 17.9843
MANUAL LAND SYNOP RH2M (%) : out of range
4 times in the last 10 days for at least one item
Severe: obs_number=65.0000, expected range: 66.0000 66.0000
BUFR LAND SYNOP RH2M (%) : out of range
Considerable: obs_number=549.0000, expected range: 654.5473 897.2948