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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-07 00:00

mhs
ALLSKY METOP-A/MHS RADIANCES CHANNEL 4 : out of range
5 times in the last 10 days for at least one item
Slight: obs_number=36517.0000, expected range: 38501.8968 52635.1905
Radiosondes
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 300-600 (HPA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=663.0000, expected range: 548.7407 590.9063
LAND TEMP TEMPERATURE (K) 32540 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=9.0129, expected range: 0.0000 4.1792
LAND TEMP TEMPERATURE (K) 21432 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=7.3464, expected range: 0.0000 3.5790
LAND TEMP TEMPERATURE (K) 27459 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=10.0601, expected range: 0.0000 3.6397
Severe: avg_pge=0.9175, expected range: -0.3674 0.6931
LAND TEMP WIND VECTOR DIFF (M/S) 29282 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.2412, expected range: 0.0000 8.4871
LAND TEMP WIND VECTOR DIFF (M/S) 24507 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8079, expected range: -0.7887 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 20292 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=18.2372, expected range: 0.0000 9.3862
LAND TEMP WIND VECTOR DIFF (M/S) 32618 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=16.4896, expected range: 0.0000 6.9157
LAND TEMP WIND VECTOR DIFF (M/S) 32618 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.9405, expected range: -0.8306 0.7500
LAND TEMP Q (G/KG) 27594 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=3.1958, expected range: 0.0000 1.2444
HIGH RESO LAND TEMP TEMPERATURE (K) 17281 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=7.2261, expected range: 0.0000 2.5439
Severe: avg_pge=0.8646, expected range: -0.3247 0.4203
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=396.0000, expected range: 324.3195 336.7917
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 0-300 (HPA) : out of range
Considerable: avg_fgdepar=0.0394, expected range: -0.0229 0.0149
amdar
WIGOS AMDAR TEMPERATURE (K) 0OBGUWJA (4 pressure layers affected) : out of range
Severe: rms_fgdepar=6.8335, expected range: 0.0000 2.2627
WIGOS AMDAR TEMPERATURE (K) 0OBGUWJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8446, expected range: -0.1130 0.1340
WIGOS AMDAR TEMPERATURE (K) MZXYCOZA PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8964, expected range: -1.8163 0.7500
WIGOS AMDAR TEMPERATURE (K) SL0021 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=6.2601, expected range: 0.2520 1.4142
WIGOS AMDAR WIND VECTOR DIFF (M/S) XIZX1KBA PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8500, expected range: -0.7233 0.7500
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 97270 PRESSURE LAYER 300-600 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8328, expected range: -0.7832 0.7500
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 89879 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=616.3244, expected range: 0.0000 267.1170
Severely_persistent: avg_pge=0.9298, expected range: -0.6330 0.7500
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=-6.2857, expected range: -1.2250 1.3463
BUFR LAND SYNOP RH2M (%) 94211 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9999, expected range: -1.9007 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42812 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=307.0849, expected range: 0.0000 262.2149
Severe: avg_pge=0.8034, expected range: -0.8598 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 98232 : out of range
Severe: rms_fgdepar=552.4498, expected range: 0.0000 135.3956
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 82332 : out of range
Severe: rms_fgdepar=986.1251, expected range: 0.0000 221.7793
Severe: avg_pge=0.9433, expected range: -0.7667 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42314 : out of range
Severe: rms_fgdepar=447.5348, expected range: 0.0000 213.3936
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83844 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=927.8192, expected range: 0.0000 808.5011
Severe: avg_pge=0.9385, expected range: -1.0055 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40968 : out of range
Severe: rms_fgdepar=946.6265, expected range: 0.0000 190.5561
Severe: avg_pge=0.9192, expected range: -0.6301 0.7500
MANUAL LAND SYNOP RH2M (%) 57766 : out of range
Severe: rms_fgdepar=29.0344, expected range: 0.0000 15.6143
MANUAL LAND SYNOP RH2M (%) 40719 : out of range
Severe: rms_fgdepar=31.7560, expected range: 0.0000 14.5034
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48042 : out of range
Severe: rms_fgdepar=598.8667, expected range: 0.0000 176.6980
BUFR LAND SYNOP SURFACE PRESSURE (PA) 93738 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8443, expected range: -0.9504 0.7500
BUFR LAND SYNOP RH2M (%) 94415 : out of range
Severe: avg_pge=1.0000, expected range: -2.0267 0.7500
BUFR LAND SYNOP RH2M (%) 71855 : out of range
Severe: avg_pge=0.9032, expected range: -0.0638 0.0889
BUFR LAND SYNOP RH2M (%) 27679 : out of range
Severe: rms_fgdepar=39.1465, expected range: 0.0000 19.3088
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
3 times in the last 10 days for at least one item
Considerable: rms_fgdepar=111.2322, expected range: 30.7741 77.5631
ship
SHIP SURFACE PRESSURE (PA) AUFH : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8077, expected range: -0.5213 0.7500
SHIP WIND VECTOR DIFF (M/S) VRGE7 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8350, expected range: -0.2660 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=0.8340, expected range: 0.1275 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3731 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8086, expected range: -1.1052 0.7500
SHIP SURFACE PRESSURE (PA) 3ETA7 : out of range
Severe: avg_pge=0.8460, expected range: -0.6295 0.7500
SHIP SURFACE PRESSURE (PA) PBKH : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8413, expected range: -1.2755 0.7500
SHIP SURFACE PRESSURE (PA) WFLH : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8479, expected range: -0.2111 0.7500
ABBREVIATED SHIP SURFACE PRESSURE (PA) WYL4909 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8670, expected range: -0.9260 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4802503 : out of range
Severe: rms_fgdepar=348.1509, expected range: 0.0000 172.9837
DRIFTING BUOYS SURFACE PRESSURE (PA) 1301603 : out of range
Severe: rms_fgdepar=338.8087, expected range: 0.0000 130.0061
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701566 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8334, expected range: -0.9254 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801667 : out of range
Severe: rms_fgdepar=303.3780, expected range: 0.0000 85.6432
DRIFTING BUOYS SURFACE PRESSURE (PA) 4801649 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=430.9934, expected range: 0.0000 91.7422
snow
AUTOMATIC LAND SYNOP SNOW (CM) : out of range
10 times in the last 10 days for at least one item
Severely_persistent: obs_number=547.0000, expected range: 254.7316 348.4906
BUFR LAND SYNOP SNOW (CM) : out of range
10 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=0.4678, expected range: -0.0528 0.0692
Severely_persistent: rms_fgdepar=0.1104, expected range: -0.0064 0.0072
Severely_persistent: avg_fgdepar=0.0146, expected range: -0.0034 0.0044
Severely_persistent: avg_fgdepar=-0.0353, expected range: -0.0036 0.0032
MANUAL LAND SYNOP SNOW (CM) : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=0.0596, expected range: -0.0010 0.0009
Severe: rms_fgdepar=0.3541, expected range: -0.0042 0.0046
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8241, expected range: 0.6298 0.9552
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=105.0000, expected range: 118.0874 121.4126
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8246, expected range: 0.6309 0.9568
MANUAL LAND SYNOP 2M TEMPERATURE (K) 25151 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=9.3710, expected range: 0.0000 2.1982
METAR 2M TEMPERATURE (K) MMCB : out of range
Severe: rms_fgdepar=7.9403, expected range: 0.0000 4.3141
METAR 2M TEMPERATURE (K) KDLF : out of range
Severe: rms_fgdepar=10.7051, expected range: 0.5627 4.2306
METAR 2M TEMPERATURE (K) SKBG : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=11.5959, expected range: 0.0000 4.1048
METAR 2M TEMPERATURE (K) KMYR : out of range
Severe: rms_fgdepar=10.8769, expected range: 0.0000 5.0255
METAR 2M TEMPERATURE (K) VTUW : out of range
Severe: rms_fgdepar=7.0460, expected range: 0.7391 4.3248
LAND TEMP 2M TEMPERATURE (K) 29572 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8367, expected range: -0.4321 1.3017
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
Severe: avg_est_pge=0.8337, expected range: -0.1022 1.3085
rh2m
MANUAL LAND SYNOP RH2M (%) 17203 : out of range
Severe: rms_fgdepar=31.8228, expected range: 0.0000 15.2115