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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-09 12:00

amsua
AQUA/AMSUA RADIANCES (8 channels affected) : out of range
Considerable: obs_number=7084.0000, expected range: 8348.9543 11432.6246
airs
AQUA/AIRS RADIANCES (176 channels affected) : out of range
Severe: obs_number=13248.0000, expected range: 18722.4973 20336.0973
AQUA/AIRS RADIANCES CHANNEL 1142 : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=0.0176, expected range: -0.1172 -0.0321
mhs
ALLSKY METOP-C/MHS RADIANCES CHANNEL 1 : out of range
Slight: obs_number=26491.0000, expected range: 27286.4108 31155.3787
ALLSKY METOP-C/MHS RADIANCES CHANNEL 3 : out of range
Slight: obs_number=44538.0000, expected range: 46111.2618 50279.5074
ALLSKY METOP-C/MHS RADIANCES CHANNEL 4 : out of range
Slight: obs_number=42334.0000, expected range: 44693.2550 47569.5227
ALLSKY METOP-C/MHS RADIANCES CHANNEL 5 : out of range
Slight: obs_number=26242.0000, expected range: 27011.9529 30991.5208
resat
NOAA-19/SBUV OZONE, TOP PRESSURE LAYER 0-1 (HPA) : out of range
4 times in the last 10 days for at least one item
Slight: obs_number=1938.0000, expected range: 2011.1031 2213.6681
Radiosondes
LAND TEMP TEMPERATURE (K) 20292 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=11.7303, expected range: 0.0000 4.5576
LAND TEMP TEMPERATURE (K) 83362 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=6.6050, expected range: 0.0000 2.0172
LAND TEMP WIND VECTOR DIFF (M/S) 20292 PRESSURE LAYER 0-300 (HPA) : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=27.2102, expected range: 0.0000 12.6180
Severe: avg_pge=0.8865, expected range: -0.9044 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 20674 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=15.8374, expected range: 0.0000 6.5875
Severe: avg_pge=0.9006, expected range: -0.7792 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) 17281 PRESSURE LAYER 600-900 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8365, expected range: -1.2293 0.7500
amdar
WIGOS AMDAR TEMPERATURE (K) 0OBGUWJA (2 pressure layers affected) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=6.6830, expected range: 0.0000 4.6189
WIGOS AMDAR TEMPERATURE (K) 0OBGUWJA PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8043, expected range: -1.2532 0.7500
WIGOS AMDAR TEMPERATURE (K) MZXYCOZA (2 pressure layers affected) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8824, expected range: -1.8668 0.7500
WIGOS AMDAR TEMPERATURE (K) EU7036 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=12.4556, expected range: 0.0000 3.5707
Severe: avg_pge=0.9116, expected range: -0.6138 0.7500
WIGOS AMDAR TEMPERATURE (K) AUMZGNZA PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_pge=0.8827, expected range: -1.5890 0.7500
WIGOS AMDAR Q (G/KG) BWWUOGBA PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8488, expected range: -1.1938 0.7500
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 47570 PRESSURE LAYER 600-900 : out of range
Severe: rms_fgdepar=15.6823, expected range: 0.0000 8.5634
Severe: avg_pge=0.8497, expected range: -0.5228 0.7500
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
Slight: rms_fgdepar=5.3523, expected range: 2.1996 4.9983
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=5.0000, expected range: 167.8887 226.5558
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8941, expected range: -1.3291 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27415 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9352, expected range: -0.0262 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 78896 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8425, expected range: -0.8228 0.7500
BUFR LAND SYNOP RH2M (%) 01463 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8789, expected range: -1.4211 0.7500
BUFR LAND SYNOP RH2M (%) 81737 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9952, expected range: 0.5689 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=1.0000, expected range: -0.7660 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 89625 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=560.1310, expected range: 0.0000 204.4815
Severe: avg_pge=0.8618, expected range: -1.0770 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42393 : out of range
Severe: rms_fgdepar=664.2980, expected range: 0.0000 279.7367
Severe: avg_pge=0.9032, expected range: -1.0051 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 64405 : out of range
Severe: rms_fgdepar=477.2468, expected range: 0.0000 341.8834
Severe: avg_pge=0.8783, expected range: -0.4369 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 67067 : out of range
Severe: rms_fgdepar=1091.8552, expected range: 0.0000 440.6460
Severe: avg_pge=0.9417, expected range: -1.1282 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43289 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8108, expected range: -1.4803 0.7500
MANUAL LAND SYNOP RH2M (%) 68624 : out of range
Severe: rms_fgdepar=22.3492, expected range: 0.0000 12.5348
MANUAL LAND SYNOP RH2M (%) 42834 : out of range
Severe: avg_pge=0.9972, expected range: -0.0603 0.0827
MANUAL LAND SYNOP RH2M (%) 42177 : out of range
Severe: avg_pge=0.9636, expected range: -0.6894 0.7500
MANUAL LAND SYNOP RH2M (%) 40708 : out of range
Severe: avg_pge=0.9923, expected range: -0.0827 0.1025
BUFR LAND SYNOP SURFACE PRESSURE (PA) 21821 : out of range
Severe: rms_fgdepar=549.9342, expected range: 0.0000 173.3406
BUFR LAND SYNOP SURFACE PRESSURE (PA) 60476 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8610, expected range: -1.1843 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24668 : out of range
Severe: rms_fgdepar=449.3445, expected range: 0.0000 234.4881
BUFR LAND SYNOP SURFACE PRESSURE (PA) 29869 : out of range
Severe: rms_fgdepar=517.6253, expected range: 0.0000 154.0771
BUFR LAND SYNOP RH2M (%) 63741 : out of range
Severe: avg_pge=0.9773, expected range: -0.0742 0.0944
ship
SHIP SURFACE PRESSURE (PA) OXSQ2 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8653, expected range: -1.1306 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=0.8818, expected range: 0.1307 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) AMOUK24 : out of range
Severe: rms_fgdepar=600.9594, expected range: 0.0000 413.2629
Severe: avg_pge=0.8799, expected range: -1.0346 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3731 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9190, expected range: -1.0914 0.7500
SHIP SURFACE PRESSURE (PA) HPYE : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8199, expected range: -1.0089 0.7500
SHIP WIND VECTOR DIFF (M/S) C6OT4 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=22.3027, expected range: 0.0000 19.4155
Severe: avg_pge=0.9293, expected range: -0.3346 0.7500
ABBREVIATED SHIP SURFACE PRESSURE (PA) VRRN8 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8126, expected range: -1.0946 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 3401543 : out of range
Severe: rms_fgdepar=525.5723, expected range: 0.0000 274.4128
Severe: avg_pge=0.9003, expected range: -0.7562 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2101634 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8254, expected range: -1.0965 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2201559 : out of range
Severe: rms_fgdepar=538.5031, expected range: 0.0000 139.4600
metar
METAR SURFACE PRESSURE (PA) EGQA : out of range
Severe: rms_fgdepar=363.6962, expected range: 0.0000 183.3553
METAR SURFACE PRESSURE (PA) PAEC : out of range
Severe: rms_fgdepar=1059.8669, expected range: 0.0000 199.8701
Severe: avg_pge=0.8968, expected range: -0.5910 0.6850
METAR SURFACE PRESSURE (PA) LIPO : out of range
Severe: rms_fgdepar=309.8297, expected range: 0.0000 156.2310
snow
MANUAL LAND SYNOP SNOW (CM) 71924 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=16.3445, expected range: 0.0000 4.2857
t2m
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8752, expected range: -0.3707 1.2518
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71855 : out of range
Severe: rms_fgdepar=11.1064, expected range: 0.0000 5.4786
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 68558 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.0336, expected range: 0.0000 4.0080
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89564 : out of range
Severe: rms_fgdepar=8.5331, expected range: 0.0000 4.3445
METAR 2M TEMPERATURE (K) EGGD : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.7950, expected range: 0.0000 2.6726
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8244, expected range: 0.0283 1.2572
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8358, expected range: 0.1264 1.1511
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
Severe: obs_number=125.0000, expected range: 88.3726 107.1409