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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-14 12:00

amsua
METOP-B/AMSUA RADIANCES CHANNEL 8 : out of range
4 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.6253, expected range: 0.1381 0.5103
iasi
METOP-A/IASI RADIANCES CHANNEL 1479 : out of range
1 times in the last 10 days for at least one item
Slight: avg_fgdepar=-0.1323, expected range: -0.0983 0.0852
airs
AQUA/AIRS RADIANCES CHANNEL 1024 : out of range
Severe: avg_fgdepar=0.2403, expected range: -0.0587 0.0711
Severe: stdev_fgdepar=1.0238, expected range: 0.2035 0.3300
Atmospheric Motion Vector
METEOSAT-8/AMV VIS2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA : out of range
Considerable: stdev_press=41.3185, expected range: 45.5220 57.4434
Geostationary CSR
GOES-15/IMAGER RADIANCES CHANNEL 2 : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=9268.0000, expected range: 32862.0435 39413.9456
Radiosondes
All LAND TEMP WIND VECTOR DIFF (M/S) ALL LAYERS WMO BLOCK 16 : all data missing
Severe: obs_number=0, expected range: 41.24 115.53
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
Severe: obs_number=66.0000, expected range: 112.3985 150.6603
HIGH RESO LAND TEMP Q (G/KG) 78897 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=2.4524, expected range: 0.0000 0.9465
amdar
AMDAR TEMPERATURE (K) JP9Z58WZ (3 pressure layers affected) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=7.8900, expected range: 0.0000 1.8495
AMDAR TEMPERATURE (K) JP9Z58WZ PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8637, expected range: -1.2386 0.7500
WIGOS AMDAR WIND VECTOR DIFF (M/S) UXRKJGZA PRESSURE LAYER 300-600 (HP : out of range
Severe: rms_fgdepar=18.5067, expected range: 0.6021 6.5329
Severe: avg_pge=0.8490, expected range: -0.2929 0.5304
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 80094 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.3459, expected range: 2.2657 8.7742
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42523 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8186, expected range: -1.1339 0.7500
MANUAL LAND SYNOP RH2M (%) 63962 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9999, expected range: -1.8719 0.7500
MANUAL LAND SYNOP RH2M (%) 40016 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9994, expected range: -1.7253 0.7500
BUFR LAND SYNOP RH2M (%) 81788 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9753, expected range: -0.1195 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 65442 : out of range
Severe: rms_fgdepar=678.5429, expected range: 0.0000 223.7386
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 13463 : out of range
Severe: rms_fgdepar=313.5246, expected range: 0.0000 284.0690
Severe: avg_pge=0.8254, expected range: -0.5582 0.7500
MANUAL LAND SYNOP RH2M (%) 81100 : out of range
Severe: rms_fgdepar=36.8979, expected range: 0.0000 16.6992
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9982, expected range: -1.0354 0.7500
MANUAL LAND SYNOP RH2M (%) 17191 : out of range
Severe: rms_fgdepar=25.2946, expected range: 0.0000 6.0399
MANUAL LAND SYNOP RH2M (%) 43303 : out of range
Severe: avg_pge=0.9274, expected range: -0.0421 0.0594
MANUAL LAND SYNOP RH2M (%) 17193 : out of range
Severe: rms_fgdepar=26.4060, expected range: 0.0000 14.1846
MANUAL LAND SYNOP RH2M (%) 42056 : out of range
Severe: rms_fgdepar=51.5034, expected range: 0.0000 20.7374
Severe: avg_pge=0.9461, expected range: -0.6801 0.7500
MANUAL LAND SYNOP RH2M (%) 51777 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.9989, expected range: -1.9981 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48033 : out of range
Severe: avg_pge=0.8489, expected range: -1.2613 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 11165 : out of range
Severe: rms_fgdepar=325.7521, expected range: 0.0000 159.5019
BUFR LAND SYNOP RH2M (%) 02710 : out of range
Severe: rms_fgdepar=29.5145, expected range: 0.0000 15.2998
BUFR LAND SYNOP RH2M (%) 72323 : out of range
Severe: rms_fgdepar=43.5239, expected range: 0.0000 16.8993
BUFR LAND SYNOP RH2M (%) 07535 : out of range
Severe: rms_fgdepar=36.4697, expected range: 0.0000 17.6149
BUFR LAND SYNOP RH2M (%) 81737 : out of range
Severe: avg_pge=0.9972, expected range: -1.0673 0.7500
BUFR LAND SYNOP RH2M (%) 34208 : out of range
Severe: rms_fgdepar=22.8929, expected range: 0.0000 10.6462
BUFR LAND SYNOP RH2M (%) 26348 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=17.9663, expected range: 0.0000 8.5290
BUFR LAND SYNOP RH2M (%) 02468 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8246, expected range: -1.1213 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=109.0000, expected range: 139.4841 242.0715
ship
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 42013 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8758, expected range: -1.1643 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) 44058 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8230, expected range: 0.1220 0.7500
SHIP WIND VECTOR DIFF (M/S) WYQ4356 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8352, expected range: -0.2880 0.7500
SHIP SURFACE PRESSURE (PA) 9V5242 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=707.7459, expected range: 0.0000 238.7895
SHIP SURFACE PRESSURE (PA) D5HF2 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9208, expected range: 0.1014 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=0.9416, expected range: 0.3218 0.7500
SHIP WIND VECTOR DIFF (M/S) C6UT5 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=21.8689, expected range: 0.0000 15.0961
Severe: avg_pge=0.9315, expected range: -0.6271 0.7500
SHIP SURFACE PRESSURE (PA) C6BC9 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=421.4702, expected range: 0.0000 198.7874
SHIP SURFACE PRESSURE (PA) 9HJF9 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=922.8959, expected range: 0.0000 272.3999
Severe: avg_pge=0.8620, expected range: -0.7891 0.7500
SHIP SURFACE PRESSURE (PA) PFBE : out of range
Severe: rms_fgdepar=571.3017, expected range: 0.0000 98.9542
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 4301502 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8429, expected range: 0.6350 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4802008 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=402.0825, expected range: 0.0000 189.2523
Severe: avg_pge=0.8426, expected range: -0.1604 0.2059
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=5.1282, expected range: 0.0000 0.0000
metar
AUTOMATIC METAR SURFACE PRESSURE (PA) : out of range
Severe: avg_biascorr=-120.0000, expected range: 0.0000 0.0000
AUTOMATIC METAR SURFACE PRESSURE (PA) ENLA : out of range
Severe: avg_pge=0.8289, expected range: -0.8626 0.7500
snow
BUFR LAND SYNOP SNOW (CM) : out of range
Severe: avg_fgdepar=-0.0002, expected range: 0.0000 0.0000
Severe: rms_fgdepar=0.0024, expected range: 0.0000 0.0000
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8102, expected range: 0.6736 0.8989
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: obs_number=222.0000, expected range: 274.1496 308.1629
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=67.0000, expected range: 66.0000 66.0000
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8150, expected range: 0.6756 0.8985
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
9 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=9.7572, expected range: 3.6596 6.8026
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89799 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8117, expected range: 0.2457 1.1140
MANUAL LAND SYNOP 2M TEMPERATURE (K) 43229 : out of range
Severe: rms_fgdepar=19.0707, expected range: 0.2329 5.0632
Severe: avg_est_pge=0.8489, expected range: -0.2152 0.5693
METAR 2M TEMPERATURE (K) KHIF : out of range
Severe: rms_fgdepar=14.7830, expected range: 0.0000 9.5253
Severe: avg_est_pge=0.8074, expected range: -0.2609 0.6039
LAND TEMP 2M TEMPERATURE (K) 72501 : out of range
Severe: avg_est_pge=0.8243, expected range: -0.4481 0.8400
LAND TEMP 2M TEMPERATURE (K) 72582 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8321, expected range: -0.3167 1.2391
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8563, expected range: -0.4271 1.4218
LAND TEMP 2M TEMPERATURE (K) 04417 : out of range
Severe: avg_est_pge=0.8620, expected range: 0.1826 1.1140
LAND TEMP 2M TEMPERATURE (K) 56137 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8240, expected range: -0.2620 1.3062
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=51.0000, expected range: 78.2553 173.0420