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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2020-01-09 12:00

amsua
METOP-A AMSUA RADIANCES CHANNEL 9 : out of range
Severe: avg_biascorr=0.2440, expected range: 0.2778 0.3374
METOP-A AMSUA RADIANCES (10 channels affected) : out of range
Considerable: obs_number=2938.0000, expected range: 6793.2198 14884.3231
Radiosondes
LAND TEMP TEMPERATURE (K) 25403 PRESSURE LAYER 900-1200 (HPA) : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8018, expected range: -1.0459 0.7500
LAND TEMP TEMPERATURE (K) 24688 PRESSURE LAYER 900-1200 (HPA) : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8666, expected range: -0.8355 0.7500
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 04089 PRESSURE LAYER 900-12 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8200, expected range: -0.9416 0.7500
All HIGH RESO SEA TEMP ALL LAYERS Tropics : all data missing
Severely_persistent: obs_number=0, expected range: 0.00 326.79
LAND TEMP WIND VECTOR DIFF (M/S) (4 pressure layers affected) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=1646.0000, expected range: 2319.9330 3169.7141
HIGH RESO LAND TEMP TEMPERATURE (K) (4 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=5148.0000, expected range: 2333.8380 3663.9267
HIGH RESO LAND TEMP TEMPERATURE (K) 72562 PRESSURE LAYER 900-1200 (HPA : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8659, expected range: -1.1678 0.7500
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=199.0000, expected range: 259.8165 272.1835
All HIGH RESO SEA TEMP ALL LAYERS Alantic Tropical are : all data missing
Severe: obs_number=0, expected range: 0.00 326.27
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
Considerable: obs_number=318.0000, expected range: 40.1928 257.1013
amdar
WIGOS AMDAR WIND VECTOR DIFF (M/S) XIZX1KBA (2 pressure layers affecte : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8109, expected range: -0.3690 0.6529
WIGOS AMDAR WIND VECTOR DIFF (M/S) DIJX1DJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=68.9847, expected range: 0.0000 9.1271
Severe: avg_pge=0.9562, expected range: -0.4883 0.6135
WIGOS AMDAR WIND VECTOR DIFF (M/S) 1ACE3ZZA PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8673, expected range: -1.0711 0.7500
WIGOS AMDAR WIND VECTOR DIFF (M/S) XIZX1KBA PRESSURE LAYER 300-600 (HP : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=18.7772, expected range: 0.0000 11.2832
airep
AIREP WIND VECTOR DIFF (M/S) AAL144 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.0264, expected range: 0.0000 8.2808
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) (2 pressure layers affected) : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=2446.0000, expected range: 1258.0992 1372.9008
synop
BUFR LAND SYNOP RH2M (%) 81739 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=58.1892, expected range: 0.0000 45.6397
Severely_persistent: avg_pge=1.0000, expected range: -1.4499 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48112 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8657, expected range: -0.8896 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24585 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8609, expected range: -0.0987 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 56946 : out of range
25 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8708, expected range: -1.3904 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 78896 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8073, expected range: 0.2381 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 14549 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8463, expected range: -0.6580 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 89575 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9847, expected range: -1.0779 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
Severe: obs_number=163.0000, expected range: 281.3753 332.2717
MANUAL LAND SYNOP RH2M (%) 43335 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=40.8721, expected range: 0.0000 37.1345
Severe: avg_pge=0.9961, expected range: -0.1232 0.1624
MANUAL LAND SYNOP RH2M (%) 42639 : out of range
Severe: avg_pge=0.8901, expected range: -0.1314 0.1609
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 31510 : out of range
Severe: rms_fgdepar=542.9911, expected range: 0.0000 152.4647
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42925 : out of range
Severe: avg_pge=0.8233, expected range: -0.9550 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 78467 : out of range
Severe: rms_fgdepar=533.5335, expected range: 0.0000 227.5669
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42469 : out of range
Severe: rms_fgdepar=392.3446, expected range: 0.0000 315.0930
Severe: avg_pge=0.8522, expected range: -0.7836 0.7500
BUFR LAND SYNOP RH2M (%) 61660 : out of range
Severe: avg_pge=0.9721, expected range: -0.4656 0.6176
BUFR LAND SYNOP RH2M (%) 04018 : out of range
Severe: rms_fgdepar=36.3264, expected range: 0.0000 18.7809
BUFR LAND SYNOP SURFACE PRESSURE (PA) 01020 : out of range
Severe: rms_fgdepar=372.7389, expected range: 0.0000 251.9667
Severe: avg_pge=0.8759, expected range: -0.7238 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 02820 : out of range
Severe: rms_fgdepar=329.3357, expected range: 0.0000 241.1308
Severe: avg_pge=0.8232, expected range: -0.7391 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 81002 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8176, expected range: -0.2635 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 04077 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=539.5261, expected range: 0.0000 129.6728
Severe: avg_pge=0.9115, expected range: -0.2675 0.3733
BUFR LAND SYNOP SURFACE PRESSURE (PA) 33187 : out of range
Severe: rms_fgdepar=343.1944, expected range: 0.0000 133.6971
BUFR LAND SYNOP Z (M) 71999 : out of range
Severe: avg_pge=0.8507, expected range: -0.6704 0.7500
AUTOMATIC LAND SYNOP RH2M (%) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=337.0000, expected range: 359.0185 427.9815
Severe: obs_number=192.0000, expected range: 306.2821 456.6623
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=453.0000, expected range: 489.5644 575.9356
BUFR LAND SYNOP RH2M (%) : out of range
Slight: obs_number=10014.0000, expected range: 9601.0917 9969.7972
Considerable: obs_number=124.0000, expected range: 153.9465 202.0535
ship
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) EUCDE08 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8120, expected range: -0.5200 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF8A : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8994, expected range: -0.9405 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=780.0000, expected range: 2011.2412 2444.0922
All AUTOMATIC SHIP Indian Ocean Tropica : all data missing
Severe: obs_number=0, expected range: 24.08 157.66
BUFR SHIP SYNOP SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=6707.0000, expected range: 1085.6361 1417.2060
Severe: obs_number=3020.0000, expected range: 415.0659 937.6183
Severe: obs_number=2049.0000, expected range: 0.0000 177.8396
Severe: obs_number=352.0000, expected range: 0.0000 175.5713
Severe: obs_number=606.0000, expected range: 67.2676 296.8377
Severe: obs_number=4329.0000, expected range: 1053.6581 1385.2366
Considerable: rms_fgdepar=190.2282, expected range: 0.0000 123.4394
Considerable: rms_fgdepar=205.8145, expected range: 0.0000 122.0737
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4602502 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9207, expected range: -1.6294 0.7500
MOORED BUOYS SURFACE PRESSURE (PA) 6101005 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8335, expected range: -0.7117 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4602501 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=569.2923, expected range: 0.0000 342.3851
Severe: avg_pge=0.9073, expected range: -0.7970 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1401737 : out of range
Severe: rms_fgdepar=307.2187, expected range: 0.0000 101.4314
metar
METAR SURFACE PRESSURE (PA) LBPL : out of range
Severe: rms_fgdepar=820.3475, expected range: 0.0000 193.4108
snow
BUFR LAND SYNOP SNOW (CM) 02801 : out of range
Severe: rms_fgdepar=19.5051, expected range: 0.0000 7.3590
t2m
MANUAL LAND SYNOP 2M TEMPERATURE (K) 44232 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8251, expected range: 0.4862 0.9722
MANUAL LAND SYNOP 2M TEMPERATURE (K) 36259 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8239, expected range: 0.4835 1.0501
LAND TEMP 2M TEMPERATURE (K) 56046 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8157, expected range: 0.1501 1.2443
LAND TEMP 2M TEMPERATURE (K) 56137 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8368, expected range: 0.3827 1.1316
LAND TEMP 2M TEMPERATURE (K) 40948 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8376, expected range: -0.4323 1.4291
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8698, expected range: 0.6375 1.0501
BUFR LAND SYNOP 2M TEMPERATURE (K) 51542 : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8847, expected range: 0.4240 1.1480
METAR 2M TEMPERATURE (K) KOUN : out of range
Severe: rms_fgdepar=10.8035, expected range: 0.0000 6.0626
METAR 2M TEMPERATURE (K) WAHQ : out of range
Severe: rms_fgdepar=10.5226, expected range: 0.0000 4.5790
MANUAL LAND SYNOP 2M TEMPERATURE (K) : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=182.0000, expected range: 236.3171 337.4127
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=272.0000, expected range: 44.9514 217.1026