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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-11 12:00

amsua
METOP-A/AMSUA RADIANCES CHANNEL 3 : out of range
Slight: obs_number=5353.0000, expected range: 6432.5833 15196.2500
METOP-A/AMSUA RADIANCES CHANNEL 5 : out of range
Slight: obs_number=8390.0000, expected range: 10078.7354 22815.1535
airs
AQUA/AIRS RADIANCES CHANNEL 1142 : out of range
2 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0172, expected range: -0.1172 -0.0321
resat
AURA/OMI OZONE, TOP PRESSURE LAYER 0-1 (HPA) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=12744.0000, expected range: 16512.8496 24564.8872
Radiosondes
LAND TEMP WIND VECTOR DIFF (M/S) 31736 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8003, expected range: -0.7005 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 32389 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=29.8925, expected range: 0.0000 14.7445
Severe: avg_pge=0.9038, expected range: -0.6425 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 36003 PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=20.7801, expected range: 0.0000 6.9065
Severe: avg_pge=0.8048, expected range: -0.5791 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) 17281 PRESSURE LAYER 900-1200 (HPA : out of range
Severe: rms_fgdepar=9.6403, expected range: 0.0000 3.3757
HIGH RESO LAND TEMP Q (G/KG) 08430 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=4.4699, expected range: 0.0000 2.2555
LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Considerable: obs_number=86.0000, expected range: 46.4833 77.2815
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Considerable: rms_fgdepar=0.0401, expected range: 0.0000 0.0265
amdar
WIGOS AMDAR TEMPERATURE (K) EU8549 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=6.2591, expected range: 0.0000 1.6566
WIGOS AMDAR TEMPERATURE (K) 0OBGUWJA PRESSURE LAYER 0-300 (HPA) : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8525, expected range: -1.5566 0.7500
WIGOS AMDAR TEMPERATURE (K) EU8549 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_pge=0.9089, expected range: -0.0765 0.0958
WIGOS AMDAR TEMPERATURE (K) MZXYCOZA PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.9312, expected range: -1.4799 0.7500
WIGOS AMDAR WIND VECTOR DIFF (M/S) EU8549 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=20.4065, expected range: 0.0000 8.0977
WIGOS AMDAR WIND VECTOR DIFF (M/S) EU8549 PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8374, expected range: -0.3762 0.4753
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10780 PRESSURE LAYER 600-900 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=17.3179, expected range: 0.0000 11.6017
Severe: avg_pge=0.8728, expected range: -0.3300 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10605 PRESSURE LAYER 600-900 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=20.2330, expected range: 0.0000 11.2540
Severe: avg_pge=0.8777, expected range: -0.3206 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 10629 PRESSURE LAYER 600-900 : out of range
Severe: avg_pge=0.8488, expected range: -0.6629 0.7500
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
9 times in the last 10 days for at least one item
Severely_persistent: obs_number=10.0000, expected range: 166.1681 227.5819
BUFR LAND SYNOP SURFACE PRESSURE (PA) 72672 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=356.8430, expected range: 0.0000 140.0451
Severely_persistent: avg_pge=0.8464, expected range: -0.8923 0.7500
BUFR LAND SYNOP RH2M (%) 81737 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9340, expected range: 0.2472 0.7500
BUFR LAND SYNOP RH2M (%) 81788 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9996, expected range: -0.3733 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 66422 : out of range
Severe: rms_fgdepar=697.8055, expected range: 0.0000 248.1546
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 65467 : out of range
Severe: rms_fgdepar=485.1886, expected range: 0.0000 221.3866
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43289 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8068, expected range: -1.5402 0.7500
MANUAL LAND SYNOP RH2M (%) 42492 : out of range
Severe: avg_pge=0.9974, expected range: -0.0073 0.0158
MANUAL LAND SYNOP RH2M (%) 42174 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9906, expected range: -1.6277 0.7500
MANUAL LAND SYNOP RH2M (%) 60115 : out of range
Severe: rms_fgdepar=27.8359, expected range: 0.0000 11.8966
MANUAL LAND SYNOP RH2M (%) 42177 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8234, expected range: -1.3035 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 72570 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8170, expected range: -1.1303 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 21821 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=348.2456, expected range: 0.0000 194.7580
BUFR LAND SYNOP SURFACE PRESSURE (PA) 40362 : out of range
Severe: rms_fgdepar=334.8489, expected range: 0.0000 184.6257
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48037 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8652, expected range: -0.9474 0.7500
BUFR LAND SYNOP RH2M (%) 72290 : out of range
Severe: rms_fgdepar=32.5115, expected range: 0.0000 16.5218
ship
SHIP SURFACE PRESSURE (PA) 9V9450 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8570, expected range: -1.0442 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8473, expected range: 0.1333 0.7500
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 66022 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8930, expected range: -1.1407 0.7500
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) CFL24 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=19.2783, expected range: 0.0000 9.7897
Severe: avg_pge=0.8955, expected range: -0.5786 0.7500
SHIP WIND VECTOR DIFF (M/S) ONFZ : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9084, expected range: -0.4602 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=0.8422, expected range: -1.1696 0.7500
SHIP SURFACE PRESSURE (PA) VRGE7 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9314, expected range: -0.9152 0.7500
SHIP SURFACE PRESSURE (PA) C6KD8 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=1242.0076, expected range: -237.0529 339.6110
Severe: avg_pge=0.9464, expected range: -1.1756 0.7500
SHIP SURFACE PRESSURE (PA) VRXL8 : out of range
Severe: avg_pge=0.8295, expected range: -0.7404 0.7500
SHIP SURFACE PRESSURE (PA) 9HJF9 : out of range
Severe: avg_pge=0.8048, expected range: -0.8549 0.7500
SHIP SURFACE PRESSURE (PA) C6TH9 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8199, expected range: -1.1493 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 7401507 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8949, expected range: -0.1798 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1601700 : out of range
Severe: avg_pge=0.8730, expected range: -1.0416 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1402552 : out of range
Severe: rms_fgdepar=498.9009, expected range: 0.0000 409.3180
Severe: avg_pge=0.8783, expected range: -1.0636 0.7500
metar
AUTOMATIC METAR SURFACE PRESSURE (PA) PFNO : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=481.4553, expected range: 0.0000 143.4391
snow
MANUAL LAND SYNOP SNOW (CM) 71924 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=12.2944, expected range: 0.0000 5.1231
t2m
MANUAL LAND SYNOP 2M TEMPERATURE (K) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=125.0000, expected range: 95.4903 104.0232
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8033, expected range: 0.0519 1.2565
MANUAL LAND SYNOP 2M TEMPERATURE (K) 64402 : out of range
Severe: rms_fgdepar=7.9364, expected range: 0.0000 4.3100
MANUAL LAND SYNOP 2M TEMPERATURE (K) 76243 : out of range
Severe: rms_fgdepar=7.1554, expected range: 0.0000 3.7574
MANUAL LAND SYNOP 2M TEMPERATURE (K) 64706 : out of range
Severe: rms_fgdepar=7.4317, expected range: 0.0000 3.9135
MANUAL LAND SYNOP 2M TEMPERATURE (K) 24966 : out of range
Severe: rms_fgdepar=8.2211, expected range: 0.0000 3.3853
METAR 2M TEMPERATURE (K) KNPA : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.4121, expected range: 0.3604 3.7936
METAR 2M TEMPERATURE (K) MMAN : out of range
Severe: rms_fgdepar=7.4474, expected range: 0.9444 3.7549
rh2m
AUTOMATIC LAND SYNOP RH2M (%) 40573 : out of range
Severe: rms_fgdepar=21.0941, expected range: 0.0000 11.9447
MANUAL LAND SYNOP RH2M (%) : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=124.0000, expected range: 85.6866 109.9350