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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-17 12:00

amsua
METOP-A/AMSUA RADIANCES CHANNEL 10 : out of range
4 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.6482, expected range: -0.1134 0.4739
iasi
All METOP-A/IASI RADIANCES ALL CHANNELS Global : all data missing
Severe: obs_number=0, expected range: 4425.81 25071.42
mhs
ALLSKY METOP-A/MHS RADIANCES (5 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=18552.0000, expected range: 27495.9037 31118.5699
gpsro
All TERRASAR-X SETTING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 0.00 1404.05
All TANDEM-X RISING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 0.00 1139.04
Atmospheric Motion Vector
METEOSAT-11/AMV IR3 WIND VECTOR DIFF (M/S) PRESSURE LAYER 900-1200 (HP : out of range
2 times in the last 10 days for at least one item
Considerable: stdev_fgdepar=2.1528, expected range: 0.3951 1.7249
Radiosondes
LAND TEMP TEMPERATURE (K) 20292 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=7.5390, expected range: 0.0000 3.7675
LAND TEMP WIND VECTOR DIFF (M/S) 31873 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=20.4078, expected range: 0.0000 11.1630
LAND TEMP WIND VECTOR DIFF (M/S) 32477 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=17.8790, expected range: 0.0000 13.6039
Severe: avg_pge=0.8005, expected range: -0.7151 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 68994 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=15.6600, expected range: 0.0000 8.7941
Severe: avg_pge=0.8840, expected range: -0.9749 0.7500
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
Severe: obs_number=282.0000, expected range: 341.9759 395.6908
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
Severe: obs_number=188.0000, expected range: 90.3194 101.5556
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (3 pressure layers affected : out of range
Severe: obs_number=279.0000, expected range: 178.4430 194.3070
amdar
WIGOS AMDAR TEMPERATURE (K) 23S0JFZA (2 pressure layers affected) : out of range
Severe: rms_fgdepar=13.9801, expected range: 0.0000 1.2851
Severe: avg_pge=0.9244, expected range: -0.0521 0.0598
WIGOS AMDAR WIND VECTOR DIFF (M/S) GN0RPDJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.3572, expected range: 0.0000 8.1674
WIGOS AMDAR Q (G/KG) BWWUOGBA PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9729, expected range: -1.1137 0.7500
WIGOS AMDAR Q (G/KG) DGNXL5RA PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9112, expected range: -1.1708 0.7500
WIGOS AMDAR Q (G/KG) XWGY0OZA PRESSURE LAYER 900-1200 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8374, expected range: -1.0630 0.7500
airep
AIREP WIND VECTOR DIFF (M/S) AAL132 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.4772, expected range: 0.0000 8.3189
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 68994 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=15.2804, expected range: 0.0000 12.5956
Severe: avg_pge=0.8823, expected range: -1.0036 0.7500
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42523 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8795, expected range: -0.5357 0.7500
BUFR LAND SYNOP RH2M (%) 02468 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9532, expected range: -1.5314 0.7500
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8818, expected range: -1.1201 0.7500
MANUAL LAND SYNOP RH2M (%) 41560 : out of range
Severe: avg_pge=0.9787, expected range: -0.8334 0.7500
MANUAL LAND SYNOP RH2M (%) 62131 : out of range
Severe: rms_fgdepar=19.0423, expected range: 0.0000 7.4332
MANUAL LAND SYNOP RH2M (%) 51777 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9969, expected range: -1.9619 0.7500
MANUAL LAND SYNOP RH2M (%) 41169 : out of range
Severe: avg_pge=0.9847, expected range: -0.6709 0.7431
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 84200 : out of range
Severe: rms_fgdepar=1074.9491, expected range: 0.0000 254.2266
Severe: avg_pge=0.9467, expected range: -0.9344 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 38705 : out of range
Severe: avg_pge=0.8033, expected range: -0.6949 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40646 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=531.1822, expected range: 0.0000 204.2868
Severe: avg_pge=0.8903, expected range: -0.6971 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 65467 : out of range
Severe: rms_fgdepar=542.7429, expected range: 0.0000 173.2646
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 60518 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=326.8447, expected range: 0.0000 130.0952
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83479 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=395.4617, expected range: 0.0000 202.0285
BUFR LAND SYNOP RH2M (%) 08261 : out of range
Severe: rms_fgdepar=22.9254, expected range: 0.0000 8.1040
BUFR LAND SYNOP RH2M (%) 81737 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9931, expected range: -1.0665 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30975 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=597.0368, expected range: 0.0000 192.2937
Severe: avg_pge=0.9045, expected range: -0.5038 0.6388
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48808 : out of range
Severe: rms_fgdepar=618.9524, expected range: 0.0000 235.0480
BUFR LAND SYNOP Z (M) 63741 : out of range
Severe: rms_fgdepar=339.3527, expected range: 0.8176 182.6038
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) 44058 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8211, expected range: 0.7051 0.7500
SHIP SURFACE PRESSURE (PA) UDKG : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9027, expected range: -0.8873 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9241, expected range: 0.3043 0.7500
SHIP SURFACE PRESSURE (PA) ZCEE2 : out of range
Severe: avg_pge=0.8523, expected range: -1.0648 0.7500
SHIP SURFACE PRESSURE (PA) C6BQ4 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8827, expected range: -1.2066 0.7500
SHIP SURFACE PRESSURE (PA) LAOW5 : out of range
Severe: avg_pge=0.8236, expected range: -0.9360 0.7500
SHIP SURFACE PRESSURE (PA) WPTC : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8432, expected range: 0.4518 0.7500
SHIP SURFACE PRESSURE (PA) PBCO : out of range
Severe: avg_pge=0.8669, expected range: -0.6323 0.7500
SHIP WIND VECTOR DIFF (M/S) OUHC2 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=34.7998, expected range: 0.0000 15.5848
Severe: avg_pge=0.9562, expected range: -0.8770 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701560 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8370, expected range: -0.9722 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4601633 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8860, expected range: -1.1194 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 5301764 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=651.3924, expected range: -244.5312 351.6930
Severely_persistent: avg_pge=0.9234, expected range: -1.0775 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2201558 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8299, expected range: -1.1735 0.7500
metar
METAR SURFACE PRESSURE (PA) SBPP : out of range
Severe: rms_fgdepar=334.6410, expected range: 0.0000 164.0204
snow
BUFR LAND SYNOP SNOW (CM) : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=0.0241, expected range: -0.0001 0.0001
Severely_persistent: rms_fgdepar=0.3347, expected range: -0.0011 0.0013
t2m
MANUAL LAND SYNOP 2M TEMPERATURE (K) 62200 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.3548, expected range: 0.0000 3.3055
METAR 2M TEMPERATURE (K) LPOV : out of range
Severe: rms_fgdepar=10.4872, expected range: 0.0000 5.7978
LAND TEMP 2M TEMPERATURE (K) 72501 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8166, expected range: -0.4872 0.9049
LAND TEMP 2M TEMPERATURE (K) 56137 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8432, expected range: 0.0286 1.1089