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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-14 00:00

airs
AQUA/AIRS RADIANCES CHANNEL 1142 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0249, expected range: -0.1172 -0.0321
mhs
ALLSKY NOAA-19/MHS RADIANCES (5 channels affected) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=14202.0000, expected range: 26827.5956 32817.1266
Radiosondes
LAND TEMP TEMPERATURE (K) 43311 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=14.9872, expected range: 0.0000 4.2810
LAND TEMP TEMPERATURE (K) 20292 PRESSURE LAYER 600-900 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.1947, expected range: 0.0000 3.0181
LAND TEMP TEMPERATURE (K) 30372 PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8771, expected range: -0.8960 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: avg_pge=0.8894, expected range: -1.4997 0.7500
LAND TEMP TEMPERATURE (K) 29698 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=6.6902, expected range: 0.0000 5.6832
Severe: avg_pge=0.8786, expected range: -0.8236 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 34300 PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8715, expected range: -1.1447 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) 72340 (3 pressure layers affected) : out of range
Severe: rms_fgdepar=6.4104, expected range: 0.2826 1.6083
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
Severe: avg_biascorr=0.0000, expected range: 0.0223 0.0287
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
Severe: obs_number=286.0000, expected range: 372.1429 389.6071
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
Severe: obs_number=197.0000, expected range: 243.7278 282.5222
amdar
WIGOS AMDAR WIND VECTOR DIFF (M/S) IIKL3SZA PRESSURE LAYER 300-600 (HP : out of range
Severe: rms_fgdepar=15.9502, expected range: 0.0000 6.6070
WIGOS AMDAR WIND VECTOR DIFF (M/S) SL0019 PRESSURE LAYER 900-1200 (HPA : out of range
Severe: rms_fgdepar=16.3506, expected range: 0.0000 8.9273
WIGOS AMDAR Q (G/KG) DGNXL5RA PRESSURE LAYER 600-900 (HPA) : out of range
Severe: avg_pge=0.9997, expected range: -0.6026 0.7500
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10605 PRESSURE LAYER 600-900 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8564, expected range: -0.7010 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10356 PRESSURE LAYER 600-900 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=11.7711, expected range: 0.0000 10.5343
Severely_persistent: avg_pge=0.8475, expected range: -0.8789 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10440 PRESSURE LAYER 600-900 : out of range
Severe: rms_fgdepar=28.0383, expected range: 0.0000 9.9031
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10392 PRESSURE LAYER 600-900 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=17.1178, expected range: 0.0000 12.2697
Severe: avg_pge=0.8991, expected range: -0.3118 0.7279
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10629 PRESSURE LAYER 600-900 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8417, expected range: -0.7129 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 07182 PRESSURE LAYER 900-1200 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8809, expected range: -0.3180 0.7500
synop
BUFR LAND SYNOP SURFACE PRESSURE (PA) 78896 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9135, expected range: 0.0756 0.7500
MANUAL LAND SYNOP RH2M (%) 60750 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=42.8808, expected range: 0.0000 22.1053
Severe: avg_pge=0.9650, expected range: -1.1059 0.7500
MANUAL LAND SYNOP RH2M (%) 41560 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9272, expected range: -0.7508 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=0.8571, expected range: -1.6859 0.7500
MANUAL LAND SYNOP RH2M (%) 68926 : out of range
Severe: rms_fgdepar=44.4679, expected range: 0.0000 35.6661
Severe: avg_pge=0.9538, expected range: -0.0634 0.0780
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43310 : out of range
Severe: rms_fgdepar=1093.6825, expected range: 0.0000 361.2620
Severe: avg_pge=0.9480, expected range: -1.1804 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83692 : out of range
Severe: rms_fgdepar=336.5033, expected range: 0.0000 157.0584
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40606 : out of range
Severe: rms_fgdepar=663.8637, expected range: 0.0000 364.1688
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 32509 : out of range
Severe: rms_fgdepar=506.8984, expected range: 0.0000 276.6127
BUFR LAND SYNOP RH2M (%) 94200 : out of range
Severe: avg_pge=0.8629, expected range: -0.4296 0.5864
BUFR LAND SYNOP RH2M (%) 94213 : out of range
Severe: rms_fgdepar=55.4586, expected range: 0.0000 15.0545
Severe: avg_pge=1.0000, expected range: -0.0045 0.0118
BUFR LAND SYNOP RH2M (%) 81965 : out of range
Severe: avg_pge=0.8875, expected range: -0.3046 0.3523
BUFR LAND SYNOP RH2M (%) 06747 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9214, expected range: -1.0959 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 33633 : out of range
Severe: rms_fgdepar=335.9188, expected range: 0.0000 294.5080
Severe: avg_pge=0.8016, expected range: -0.9202 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48064 : out of range
Severe: rms_fgdepar=361.5471, expected range: 0.0000 290.5831
Severe: avg_pge=0.8310, expected range: -0.6627 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30637 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=831.1841, expected range: 0.0000 303.5571
Severe: avg_pge=0.9225, expected range: -0.7886 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48439 : out of range
Severe: rms_fgdepar=382.0276, expected range: 0.0000 110.9958
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=58.0000, expected range: 64.5640 81.1027
ship
SHIP SURFACE PRESSURE (PA) 9V9450 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8383, expected range: -0.5335 0.7500
SHIP WIND VECTOR DIFF (M/S) ONFZ : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8969, expected range: -0.1849 0.7500
SHIP SURFACE PRESSURE (PA) VRCP2 : out of range
Severe: rms_fgdepar=681.6633, expected range: 0.0000 324.6951
Severe: avg_pge=0.9032, expected range: -0.9237 0.7500
SHIP SURFACE PRESSURE (PA) OWIZ2 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8931, expected range: -1.4871 0.7500
SHIP SURFACE PRESSURE (PA) A8OH5 : out of range
Severe: avg_pge=0.8434, expected range: -1.6201 0.7500
buoy
MOORED BUOYS SURFACE PRESSURE (PA) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=211.0000, expected range: 174.8469 195.4960
Severely_persistent: obs_number=122.0000, expected range: 88.5984 104.1445
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=47.0000, expected range: 60.9538 70.3992
DRIFTING BUOYS SURFACE PRESSURE (PA) 4601619 : out of range
Severe: avg_pge=0.8777, expected range: -0.7904 0.7500
metar
METAR SURFACE PRESSURE (PA) SCIC : out of range
Severe: rms_fgdepar=634.3190, expected range: 0.0000 287.4462
snow
AUTOMATIC LAND SYNOP SNOW (CM) : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=0.0582, expected range: -0.0041 0.0051
Severe: rms_fgdepar=0.9648, expected range: -0.0567 0.0711
BUFR LAND SYNOP SNOW (CM) 07486 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=11.3137, expected range: -0.5775 0.8230
BUFR LAND SYNOP SNOW (CM) : out of range
8 times in the last 10 days for at least one item
Slight: avg_fgdepar=0.0874, expected range: -5.4197 -0.5596
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 06724 : out of range
Severe: rms_fgdepar=8.1075, expected range: 0.0000 4.3428
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 72564 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=9.6292, expected range: 0.0000 3.9445
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 02209 : out of range
Severe: rms_fgdepar=7.4052, expected range: 0.0000 3.4462
MANUAL LAND SYNOP 2M TEMPERATURE (K) 34321 : out of range
Severe: rms_fgdepar=11.2446, expected range: 0.0000 3.5709
MANUAL LAND SYNOP 2M TEMPERATURE (K) 15302 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.5928, expected range: 0.0000 4.8124
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
Severe: avg_est_pge=0.8010, expected range: 0.2005 1.0993
MANUAL LAND SYNOP 2M TEMPERATURE (K) 11025 : out of range
Severe: rms_fgdepar=7.5484, expected range: 0.0000 3.2099
MANUAL LAND SYNOP 2M TEMPERATURE (K) 13266 : out of range
Severe: rms_fgdepar=8.0901, expected range: 0.0000 4.3883
MANUAL LAND SYNOP 2M TEMPERATURE (K) 42767 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=9.4164, expected range: -2.3036 4.3616
METAR 2M TEMPERATURE (K) EDDM : out of range
Severe: rms_fgdepar=9.2685, expected range: 0.0000 4.2874
METAR 2M TEMPERATURE (K) UKON : out of range
Severe: rms_fgdepar=8.6877, expected range: 0.0000 4.0079
METAR 2M TEMPERATURE (K) UKOO : out of range
Severe: rms_fgdepar=7.5842, expected range: 0.0000 3.6973
BUFR LAND SYNOP 2M TEMPERATURE (K) 10962 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.1916, expected range: 0.0000 4.3136
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
1 times in the last 10 days for at least one item
Slight: rms_fgdepar=2.4466, expected range: 2.1002 2.3524
rh2m
AUTOMATIC LAND SYNOP RH2M (%) 68010 : out of range
Severe: rms_fgdepar=22.4173, expected range: 0.0000 11.7464
MANUAL LAND SYNOP RH2M (%) 60571 : out of range
Severe: rms_fgdepar=27.8391, expected range: 0.0000 14.0460