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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-18 00:00

iasi
METOP-A/IASI RADIANCES (275 channels affected) : out of range
Slight: obs_number=1920.0000, expected range: 4425.8108 27169.0480
METOP-A/IASI RADIANCES (19 channels affected) : out of range
Slight: avg_fgdepar=0.0661, expected range: -0.0281 0.0531
METOP-A/IASI RADIANCES CHANNEL 341 : out of range
Slight: stdev_fgdepar=0.2616, expected range: 0.2283 0.2560
METOP-A/IASI RADIANCES CHANNEL 371 : out of range
Slight: stdev_fgdepar=0.2502, expected range: 0.2185 0.2461
mhs
ALLSKY METOP-A/MHS RADIANCES CHANNEL 1 : out of range
Considerable: obs_number=6612.0000, expected range: 7435.9489 10185.4024
ALLSKY METOP-A/MHS RADIANCES CHANNEL 3 : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=12398.0000, expected range: 14298.0155 17467.6061
ALLSKY METOP-A/MHS RADIANCES CHANNEL 4 : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=12195.0000, expected range: 14098.7285 17261.1093
ALLSKY METOP-A/MHS RADIANCES CHANNEL 5 : out of range
Considerable: obs_number=6704.0000, expected range: 7497.2887 10335.5761
ALLSKY METOP-A/MHS RADIANCES CHANNEL 2 : out of range
1 times in the last 10 days for at least one item
Slight: obs_number=19292.0000, expected range: 19989.2213 24626.4544
gpsro
All TERRASAR-X SETTING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 0.00 1401.13
All TANDEM-X RISING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 0.00 1131.85
Radiosondes
LAND TEMP Q (G/KG) 36872 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_pge=0.8741, expected range: -0.3307 0.4315
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 94776 PRESSURE LAYER 900-12 : out of range
Severe: rms_fgdepar=15.4498, expected range: 0.0000 8.5794
HIGH RESO LAND TEMP Q (G/KG) 71845 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=4.5570, expected range: 0.0000 1.4851
amdar
AMDAR WIND VECTOR DIFF (M/S) JP9Z4VW9 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=16.0651, expected range: 0.0000 9.7436
Severe: avg_pge=0.8097, expected range: -0.6651 0.7500
AMDAR WIND VECTOR DIFF (M/S) JP9Z45Y9 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=16.1345, expected range: 0.0000 8.0970
WIGOS AMDAR TEMPERATURE (K) MERL3SZA PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=7.7708, expected range: 0.0000 1.9396
Severe: avg_pge=0.8639, expected range: -0.5146 0.5615
airep
AIREP WIND VECTOR DIFF (M/S) AFR008 PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=22.8566, expected range: 0.0000 11.6142
Severe: avg_pge=0.8394, expected range: -0.8576 0.7500
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 02918 PRESSURE LAYER 900-1200 : out of range
Severe: rms_fgdepar=20.7909, expected range: 0.0000 6.2572
Severe: avg_pge=0.9232, expected range: -0.5119 0.7500
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 67083 PRESSURE LAYER 300-600 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8029, expected range: -0.5512 0.7500
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42711 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9372, expected range: -1.2970 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42523 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8836, expected range: -1.3606 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42894 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8090, expected range: -1.5411 0.7500
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=0.8132, expected range: -1.3318 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42408 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=918.0991, expected range: 0.0000 556.9888
Severely_persistent: avg_pge=0.9399, expected range: -1.3647 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 68493 : out of range
Severe: rms_fgdepar=70.3464, expected range: 0.0000 41.3305
Severe: avg_pge=0.9965, expected range: -0.3234 0.3646
MANUAL LAND SYNOP RH2M (%) 41560 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8991, expected range: -0.9241 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42271 : out of range
Severe: avg_pge=0.8491, expected range: -1.2381 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42591 : out of range
Severe: rms_fgdepar=561.5107, expected range: 0.0000 124.6462
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 38705 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8203, expected range: -0.7919 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 41907 : out of range
Severe: rms_fgdepar=434.6776, expected range: 0.0000 148.2001
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 91317 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=318.7260, expected range: 0.0000 195.5541
Severe: avg_pge=0.8134, expected range: -0.4651 0.6538
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42367 : out of range
Severe: rms_fgdepar=455.4503, expected range: 0.0000 370.4809
Severe: avg_pge=0.8574, expected range: -1.1636 0.7500
BUFR LAND SYNOP RH2M (%) 94451 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9760, expected range: -1.7346 0.7500
BUFR LAND SYNOP RH2M (%) 94654 : out of range
Severe: avg_pge=0.8359, expected range: -0.6657 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94654 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=695.7742, expected range: 0.0000 159.6216
Severe: avg_pge=0.9194, expected range: -0.8587 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30975 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=416.7042, expected range: 0.0000 122.1705
Severe: avg_pge=0.8546, expected range: -0.2194 0.2753
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) 44058 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8051, expected range: 0.7049 0.7500
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 42013 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8293, expected range: -1.3209 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=0.8457, expected range: -0.8990 0.7500
SHIP WIND VECTOR DIFF (M/S) DIXJ2 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8853, expected range: -0.7428 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=0.9195, expected range: 0.3041 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) 41048 : out of range
Severe: rms_fgdepar=440.7658, expected range: 0.0000 123.6852
SHIP SURFACE PRESSURE (PA) VRLA2 : out of range
Severe: avg_pge=0.8938, expected range: -1.2524 0.7500
SHIP SURFACE PRESSURE (PA) V7VM5 : out of range
Severe: avg_pge=0.8199, expected range: -1.1553 0.7500
SHIP SURFACE PRESSURE (PA) LAOW5 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8040, expected range: -0.8848 0.7500
SHIP SURFACE PRESSURE (PA) WNGW : out of range
Severe: rms_fgdepar=1194.4211, expected range: 0.0000 251.7530
Severe: avg_pge=0.9447, expected range: -0.6885 0.7500
SHIP WIND VECTOR DIFF (M/S) TBWUK52 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=23.9751, expected range: 0.0000 16.1408
Severe: avg_pge=0.9381, expected range: -0.6470 0.7500
SHIP WIND VECTOR DIFF (M/S) PB105 : out of range
Severe: avg_pge=0.9314, expected range: -0.4366 0.7500
SHIP WIND VECTOR DIFF (M/S) VRJZ9 : out of range
Severe: avg_pge=0.9075, expected range: -0.3867 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701560 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9061, expected range: -1.0619 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4601633 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=669.4977, expected range: 0.0000 582.5330
Severely_persistent: avg_pge=0.8989, expected range: -1.1479 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-17.3626, expected range: -1.8569 1.9849
DRIBU WIND VECTOR DIFF (M/S) 53056 : out of range
Severe: avg_pge=0.9066, expected range: 0.7370 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2201558 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8254, expected range: -1.2077 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4601619 : out of range
Severe: rms_fgdepar=532.4256, expected range: 0.0000 300.9224
metar
METAR SURFACE PRESSURE (PA) SBRP : out of range
Severe: rms_fgdepar=329.1602, expected range: 0.0000 150.2086
METAR SURFACE PRESSURE (PA) VECX : out of range
Severe: rms_fgdepar=636.1926, expected range: 0.0000 501.0707
Severe: avg_pge=0.8174, expected range: -0.8381 0.7500
snow
AUTOMATIC LAND SYNOP SNOW (CM) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-5.6750, expected range: -0.0280 0.0328
Severely_persistent: avg_fgdepar=-5.6368, expected range: -0.0506 0.0968
Severely_persistent: rms_fgdepar=99.0806, expected range: -0.4871 0.6222
Severely_persistent: rms_fgdepar=98.7464, expected range: -0.5370 1.0611
BUFR LAND SYNOP SNOW (CM) : out of range
16 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=0.2298, expected range: -0.0281 0.0330
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71074 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.3814, expected range: 0.0000 4.1582
MANUAL LAND SYNOP 2M TEMPERATURE (K) 42634 : out of range
Severe: rms_fgdepar=7.2374, expected range: 0.0000 3.3231
MANUAL LAND SYNOP 2M TEMPERATURE (K) 17115 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.9037, expected range: 0.0510 1.3078
MANUAL LAND SYNOP 2M TEMPERATURE (K) 17218 : out of range
Severe: rms_fgdepar=8.3813, expected range: 0.0000 3.5105
MANUAL LAND SYNOP 2M TEMPERATURE (K) 17068 : out of range
Severe: rms_fgdepar=7.1762, expected range: 0.0000 3.7676
METAR 2M TEMPERATURE (K) KOJC : out of range
Severe: rms_fgdepar=8.4462, expected range: 0.7770 3.5136
METAR 2M TEMPERATURE (K) LTBG : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.0642, expected range: 0.5962 1.6235
METAR 2M TEMPERATURE (K) LTBL : out of range
Severe: rms_fgdepar=7.8365, expected range: 0.4619 4.0715
BUFR LAND SYNOP 2M TEMPERATURE (K) 17218 : out of range
Severe: rms_fgdepar=8.3963, expected range: 0.0000 3.6434
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=-0.5182, expected range: 0.3793 1.2074
Considerable: rms_fgdepar=3.4097, expected range: 2.0176 2.9314
rh2m
MANUAL LAND SYNOP RH2M (%) 60603 : out of range
Severe: rms_fgdepar=19.3224, expected range: 0.0000 9.5273
BUFR LAND SYNOP RH2M (%) 16766 : out of range
Severe: rms_fgdepar=21.9475, expected range: 0.0000 11.9274
MANUAL LAND SYNOP RH2M (%) : out of range
Considerable: obs_number=107.0000, expected range: 123.8656 153.1900