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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-15 00:00

amsua
AQUA/AMSUA RADIANCES (8 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=1537.0000, expected range: 8565.5355 11345.7077
NOAA-19/AMSUA RADIANCES CHANNEL 8 : out of range
Considerable: obs_number=4538.0000, expected range: 7585.1410 14833.1923
airs
AQUA/AIRS RADIANCES CHANNEL 1142 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0291, expected range: -0.1172 -0.0321
AQUA/AIRS RADIANCES (269 channels affected) : out of range
Severe: obs_number=2742.0000, expected range: 17494.4773 21396.3005
AQUA/AIRS RADIANCES (23 channels affected) : out of range
Slight: stdev_fgdepar=0.5062, expected range: 0.4706 0.4952
atms
NPP/ATMS RADIANCES CHANNEL 2 : out of range
Severe: stdev_fgdepar=2.1886, expected range: 2.4285 2.7577
Radiosondes
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=461.0000, expected range: 540.4103 572.8397
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=325.0000, expected range: 383.6623 402.7127
LAND TEMP TEMPERATURE (K) 29862 PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8947, expected range: -0.9682 0.7500
LAND TEMP TEMPERATURE (K) 30715 PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.4129, expected range: -4.3110 6.4031
Severe: avg_pge=0.9219, expected range: -1.3631 0.7500
LAND TEMP TEMPERATURE (K) 29698 PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.2246, expected range: 0.0000 6.4587
Severe: avg_pge=0.9213, expected range: -0.9070 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 35700 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.1910, expected range: 0.0000 6.7933
HIGH RESO LAND TEMP TEMPERATURE (K) 17281 PRESSURE LAYER 900-1200 (HPA : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.4486, expected range: 0.0000 6.3526
Severe: avg_pge=0.8742, expected range: -1.0295 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0000, expected range: 0.0222 0.0288
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 300-600 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=-0.4081, expected range: -0.1531 0.1382
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10629 PRESSURE LAYER 600-900 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8140, expected range: -0.7377 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10339 PRESSURE LAYER 600-900 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8137, expected range: -0.8847 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 07182 PRESSURE LAYER 900-1200 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9002, expected range: -0.3431 0.7500
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 97270 PRESSURE LAYER 300-600 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8764, expected range: -0.5914 0.7500
LAND PILOT WIND VECTOR DIFF (M/S) 41768 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_pge=0.8234, expected range: -1.2318 0.7500
LAND PILOT WIND VECTOR DIFF (M/S) 97900 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=23.5929, expected range: 0.0000 16.4288
Severe: avg_pge=0.9049, expected range: -0.5577 0.7500
BUFR LAND PILOT WIND VECTOR DIFF (M/S) (2 pressure layers affected) : out of range
Slight: rms_fgdepar=5.2542, expected range: 0.5082 4.6235
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83844 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9100, expected range: -1.0753 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 04166 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8234, expected range: -0.1881 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 78896 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9467, expected range: 0.3377 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30637 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=631.6241, expected range: 0.0000 382.0797
Severely_persistent: avg_pge=0.8934, expected range: -1.0634 0.7500
MANUAL LAND SYNOP RH2M (%) 67791 : out of range
Severe: avg_pge=0.9153, expected range: -0.6085 0.7050
MANUAL LAND SYNOP RH2M (%) 53502 : out of range
Severe: rms_fgdepar=27.6980, expected range: 0.0000 15.1354
MANUAL LAND SYNOP RH2M (%) 40016 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9995, expected range: -1.7190 0.7500
MANUAL LAND SYNOP RH2M (%) 68619 : out of range
Severe: rms_fgdepar=45.7535, expected range: 0.0000 22.4810
Severe: avg_pge=0.9487, expected range: -0.2544 0.2857
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42935 : out of range
Severe: rms_fgdepar=404.3786, expected range: 0.0000 333.3454
Severe: avg_pge=0.8529, expected range: -0.7871 0.7500
BUFR LAND SYNOP RH2M (%) 94334 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8870, expected range: -1.2806 0.7500
BUFR LAND SYNOP RH2M (%) 94877 : out of range
Severe: rms_fgdepar=47.8684, expected range: 0.0000 17.5203
Severe: avg_pge=0.9626, expected range: 0.0000 0.0059
BUFR LAND SYNOP RH2M (%) 15118 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8666, expected range: -1.0444 0.7500
BUFR LAND SYNOP RH2M (%) 11078 : out of range
Severe: rms_fgdepar=39.5284, expected range: 0.0000 20.2260
BUFR LAND SYNOP SURFACE PRESSURE (PA) 29328 : out of range
Severe: rms_fgdepar=307.6664, expected range: 0.0000 114.9292
ship
SHIP SURFACE PRESSURE (PA) 9V9450 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8607, expected range: -0.0510 0.7500
SHIP SURFACE PRESSURE (PA) C6KD8 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9179, expected range: -1.4650 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8430, expected range: 0.0078 0.7500
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 46035 : out of range
Severe: rms_fgdepar=16.9924, expected range: 0.0000 3.0585
SHIP WIND VECTOR DIFF (M/S) C6CM3 : out of range
Severe: rms_fgdepar=16.6417, expected range: 0.0000 11.9809
Severe: avg_pge=0.9075, expected range: -0.9738 0.7500
SHIP WIND VECTOR DIFF (M/S) S6LT3 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8981, expected range: -0.8006 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3731 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9198, expected range: -1.0751 0.7500
SHIP SURFACE PRESSURE (PA) 9V6081 : out of range
Severe: rms_fgdepar=492.6540, expected range: 0.0000 270.3700
Severe: avg_pge=0.8366, expected range: -0.8702 0.7500
SHIP SURFACE PRESSURE (PA) VRCS2 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8346, expected range: -1.3510 0.7500
SHIP SURFACE PRESSURE (PA) PB105 : out of range
Severe: rms_fgdepar=812.3097, expected range: 0.0000 428.0457
SHIP SURFACE PRESSURE (PA) VRAE5 : out of range
Severe: avg_pge=0.8462, expected range: -0.6911 0.7500
SHIP SURFACE PRESSURE (PA) VREM6 : out of range
Severe: rms_fgdepar=763.9818, expected range: 0.0000 214.4204
Severe: avg_pge=0.9101, expected range: -0.8127 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3047 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8278, expected range: -1.0127 0.7500
SHIP SURFACE PRESSURE (PA) BPBC : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8595, expected range: -0.7172 0.7500
SHIP SURFACE PRESSURE (PA) H3GS : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=379.0574, expected range: 0.0000 125.0441
Severe: avg_pge=0.8286, expected range: -0.4604 0.5274
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 2501667 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=563.8153, expected range: 0.0000 355.6358
Severe: avg_pge=0.8786, expected range: -0.6961 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701558 : out of range
Severe: rms_fgdepar=381.6297, expected range: 0.0000 280.7858
Severe: avg_pge=0.8258, expected range: -0.5154 0.7123
snow
BUFR LAND SYNOP SNOW (CM) : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.1250, expected range: -0.0374 0.0312
t2m
MANUAL LAND SYNOP 2M TEMPERATURE (K) 72564 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=11.4421, expected range: 0.0000 6.7717
Severely_persistent: avg_est_pge=0.8190, expected range: -0.4033 0.7652
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8098, expected range: 0.0982 1.2458
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8958, expected range: 0.2075 1.1329
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 04260 : out of range
Severe: rms_fgdepar=11.1171, expected range: 0.0000 3.7302
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02031 : out of range
Severe: rms_fgdepar=7.7151, expected range: 0.0000 4.2347
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 11304 : out of range
Severe: rms_fgdepar=9.7119, expected range: 0.0222 4.2096
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02038 : out of range
Severe: rms_fgdepar=8.0792, expected range: 0.0000 4.0184
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02029 : out of range
Severe: rms_fgdepar=7.1785, expected range: 0.0000 3.9719
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8100, expected range: 0.1509 1.1186
MANUAL LAND SYNOP 2M TEMPERATURE (K) 72764 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.0999, expected range: 0.0000 2.5651
MANUAL LAND SYNOP 2M TEMPERATURE (K) 82678 : out of range
Severe: rms_fgdepar=9.5507, expected range: 0.0000 3.4266
MANUAL LAND SYNOP 2M TEMPERATURE (K) 37609 : out of range
Severe: avg_est_pge=0.8013, expected range: -0.2373 0.8050
METAR 2M TEMPERATURE (K) LATI : out of range
Severe: rms_fgdepar=8.0191, expected range: 1.1035 3.8370
METAR 2M TEMPERATURE (K) LQBK : out of range
Severe: rms_fgdepar=9.7252, expected range: 0.0000 4.5343
METAR 2M TEMPERATURE (K) UKON : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.2734, expected range: 0.0000 3.8712
METAR 2M TEMPERATURE (K) LTAS : out of range
Severe: rms_fgdepar=9.8704, expected range: 0.0000 5.2025
LAND TEMP 2M TEMPERATURE (K) 31538 : out of range
Severe: avg_est_pge=0.8041, expected range: -0.3968 1.3073
BUFR LAND SYNOP 2M TEMPERATURE (K) 06653 : out of range
Severe: rms_fgdepar=8.2931, expected range: 0.0000 4.6609
BUFR LAND SYNOP 2M TEMPERATURE (K) 33646 : out of range
Severe: rms_fgdepar=8.4598, expected range: 0.0000 4.5134
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
2 times in the last 10 days for at least one item
Slight: rms_fgdepar=2.4134, expected range: 2.0934 2.3662
rh2m
MANUAL LAND SYNOP RH2M (%) 40357 : out of range
Severe: rms_fgdepar=25.3945, expected range: 0.0000 14.4185
METAR RH2M (%) OERR : out of range
Severe: rms_fgdepar=23.6527, expected range: 0.0000 12.5259