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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

atms
NPP/ATMS RADIANCES (20 channels affected) : out of range
Considerable: obs_number=11194.0000, expected range: 12141.8375 15029.2436
Atmospheric Motion Vector
GOES-16/AMV VIS1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 900-1200 (HPA) : out of range
Considerable: obs_number=15338.0000, expected range: 17858.3966 24098.8256
METEOSAT-8/AMV VIS2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA : out of range
Slight: obs_number=823.0000, expected range: 1094.8914 2701.3191
Radiosondes
LAND TEMP TEMPERATURE (K) PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: obs_number=108.0000, expected range: 31.6502 68.8204
LAND TEMP WIND VECTOR DIFF (M/S) 68994 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.3971, expected range: 0.0000 8.6327
LAND TEMP WIND VECTOR DIFF (M/S) 91376 PRESSURE LAYER 900-1200 (HPA) : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=15.4420, expected range: 0.0000 8.0968
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
Severe: obs_number=179.0000, expected range: 87.3379 96.9121
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=-0.0008, expected range: -0.0003 0.0003
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (3 pressure layers affected : out of range
Severe: obs_number=262.0000, expected range: 167.8752 186.7498
amdar
AMDAR TEMPERATURE (K) JP9Z58WZ (3 pressure layers affected) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.1994, expected range: 0.0000 1.6607
AMDAR TEMPERATURE (K) JP9Z58WZ (2 pressure layers affected) : out of range
Severe: avg_pge=0.8781, expected range: -0.0526 0.0610
AMDAR TEMPERATURE (K) AFZA44 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=10.7657, expected range: 0.0000 3.6559
AMDAR WIND VECTOR DIFF (M/S) AFZA44 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=25.2601, expected range: 0.0000 9.8617
WIGOS AMDAR WIND VECTOR DIFF (M/S) WOXUITRA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.5713, expected range: 0.0000 7.0049
airep
AIREP WIND VECTOR DIFF (M/S) UAL945 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=24.5553, expected range: 0.0000 5.8448
AIREP WIND VECTOR DIFF (M/S) AAL298 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.1721, expected range: 0.0000 6.0424
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 02933 PRESSURE LAYER 300-600 : out of range
Severe: rms_fgdepar=16.0649, expected range: 0.0000 9.7278
Severe: avg_pge=0.8318, expected range: -0.3806 0.5245
pilot
LAND PILOT WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=187.0000, expected range: 218.2052 278.7360
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 62008 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8270, expected range: -1.2717 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: obs_number=171.0000, expected range: 66.0411 80.5144
BUFR LAND SYNOP RH2M (%) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=288.0000, expected range: 407.0464 552.3981
AUTOMATIC LAND SYNOP RH2M (%) 35167 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9888, expected range: -1.7015 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 89014 : out of range
Severe: rms_fgdepar=715.4542, expected range: 0.0000 249.8593
Severe: avg_pge=0.8992, expected range: -0.9422 0.7500
MANUAL LAND SYNOP RH2M (%) 40016 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9992, expected range: -1.7046 0.7500
MANUAL LAND SYNOP RH2M (%) 44478 : out of range
Severe: rms_fgdepar=33.6612, expected range: 0.0000 16.3381
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86490 : out of range
Severe: rms_fgdepar=559.8718, expected range: 0.0000 230.7637
Severe: avg_pge=0.8211, expected range: -0.5490 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 84001 : out of range
Severe: rms_fgdepar=499.1377, expected range: 0.0000 112.7379
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42711 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8098, expected range: -1.2511 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42523 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8740, expected range: -1.0874 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 17135 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=413.0604, expected range: 0.0000 67.9223
Severe: avg_pge=0.8421, expected range: -0.0277 0.0314
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 60476 : out of range
Severe: rms_fgdepar=334.9431, expected range: 0.0000 171.4413
Severe: avg_pge=0.8155, expected range: -1.1286 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42408 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=582.3840, expected range: 0.0000 524.2526
Severe: avg_pge=0.8911, expected range: -1.2603 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 41998 : out of range
Severe: avg_pge=0.8136, expected range: -0.9034 0.7500
BUFR LAND SYNOP RH2M (%) 61230 : out of range
Severe: rms_fgdepar=41.8826, expected range: 0.0000 17.9419
BUFR LAND SYNOP RH2M (%) 08346 : out of range
Severe: rms_fgdepar=19.1227, expected range: 0.0000 10.8064
BUFR LAND SYNOP RH2M (%) 02468 : out of range
Severe: rms_fgdepar=49.7680, expected range: 0.0000 45.1647
Severe: avg_pge=0.9827, expected range: -0.0617 0.0800
BUFR LAND SYNOP RH2M (%) 81788 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9722, expected range: -0.1212 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 14441 : out of range
Severe: rms_fgdepar=403.1389, expected range: 0.0000 162.6703
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61461 : out of range
Severe: avg_pge=0.8468, expected range: -0.6609 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 24652 : out of range
Severe: rms_fgdepar=481.5117, expected range: 0.0000 236.9482
BUFR LAND SYNOP SURFACE PRESSURE (PA) 60476 : out of range
Severe: avg_pge=0.8443, expected range: -1.2688 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 25017 : out of range
Severe: rms_fgdepar=497.1932, expected range: 0.0000 185.6065
BUFR LAND SYNOP SURFACE PRESSURE (PA) 23699 : out of range
Severe: rms_fgdepar=1001.5416, expected range: 0.0000 155.9481
Severe: avg_pge=0.9409, expected range: 0.0000 0.0000
ship
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 42013 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=12.1657, expected range: 0.0000 9.1675
Severely_persistent: avg_pge=0.8506, expected range: -0.8839 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) 44058 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8158, expected range: -0.2741 0.7500
SHIP SURFACE PRESSURE (PA) 9V9498 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8453, expected range: -1.2495 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9072, expected range: 0.3261 0.7500
SHIP SURFACE PRESSURE (PA) OYGQ2 : out of range
Severe: avg_pge=0.8058, expected range: -0.6105 0.7500
SHIP SURFACE PRESSURE (PA) TBWUK64 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=473.9312, expected range: 0.0000 221.0554
Severe: avg_pge=0.8619, expected range: -0.9839 0.7500
SHIP SURFACE PRESSURE (PA) VRYB8 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=1068.7452, expected range: 0.0000 457.0966
Severe: avg_pge=0.9345, expected range: -0.7361 0.7500
ABBREVIATED SHIP WIND VECTOR DIFF (M/S) : out of range
Slight: rms_fgdepar=7.1573, expected range: 1.2584 6.2008
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-1.7417, expected range: 0.0000 0.0000
DRIFTING BUOYS SURFACE PRESSURE (PA) 3301601 : out of range
Severe: rms_fgdepar=323.6345, expected range: 0.0000 182.1151
DRIFTING BUOYS SURFACE PRESSURE (PA) 6401561 : out of range
Severe: rms_fgdepar=370.6296, expected range: 0.0000 134.1736
DRIFTING BUOYS SURFACE PRESSURE (PA) 4401575 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=549.0040, expected range: 0.0000 198.8725
Severe: avg_pge=0.8981, expected range: -0.5962 0.6992
metar
METAR SURFACE PRESSURE (PA) OSLK : out of range
Severe: rms_fgdepar=301.7264, expected range: 0.0000 84.1920
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8340, expected range: 0.6723 0.8958
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=0.8663, expected range: -0.3763 1.4470
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8276, expected range: 0.6755 0.8953
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 11927 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.1934, expected range: 0.0000 3.5094
MANUAL LAND SYNOP 2M TEMPERATURE (K) 61230 : out of range
Severe: rms_fgdepar=7.8472, expected range: 0.0000 4.3699
MANUAL LAND SYNOP 2M TEMPERATURE (K) 61235 : out of range
Severe: rms_fgdepar=7.3286, expected range: 0.0000 3.9372
MANUAL LAND SYNOP 2M TEMPERATURE (K) 60545 : out of range
Severe: rms_fgdepar=7.2524, expected range: 0.0000 3.7724
MANUAL LAND SYNOP 2M TEMPERATURE (K) 68668 : out of range
Severe: rms_fgdepar=7.5211, expected range: 0.0000 4.1045
METAR 2M TEMPERATURE (K) DAUL : out of range
Severe: rms_fgdepar=7.6293, expected range: 0.6588 4.3593
METAR 2M TEMPERATURE (K) MYNN : out of range
Severe: rms_fgdepar=7.5411, expected range: 0.0487 2.9778
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=64.0000, expected range: 66.0000 66.0000
AUTOMATIC LAND SYNOP RH2M (%) 68524 : out of range
Severe: rms_fgdepar=37.2038, expected range: 0.0000 18.0171
MANUAL LAND SYNOP RH2M (%) 61230 : out of range
Severe: rms_fgdepar=36.8455, expected range: 0.0000 20.3375