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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-11-13 12:00

amsua
NOAA-18/AMSUA RADIANCES CHANNEL 9 : out of range
Severe: stdev_fgdepar=0.2196, expected range: 0.1418 0.1917
iasi
All METOP-A/IASI RADIANCES ALL CHANNELS Missing
METOP-B/IASI RADIANCES (11 channels affected) : out of range
Considerable: stdev_fgdepar=0.4648, expected range: 0.2744 0.4138
airs
AQUA/AIRS RADIANCES CHANNEL 375 : out of range
2 times in the last 10 days for at least one item
Severe: stdev_fgdepar=0.4658, expected range: 0.3410 0.4134
Atmospheric Motion Vector
GOES-16/AMV VIS1 WIND VECTOR DIFF (M/S) PRESSURE LAYER 900-1200 (HPA) : out of range
2 times in the last 10 days for at least one item
Slight: obs_number=16444.0000, expected range: 17372.1612 22396.5055
Radiosondes
LAND TEMP TEMPERATURE (K) 30372 PRESSURE LAYER 900-1200 (HPA) : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9281, expected range: -0.8907 0.7500
LAND TEMP TEMPERATURE (K) 82532 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=7.3902, expected range: 0.0000 1.7956
Severe: avg_pge=0.8521, expected range: -0.2609 0.4043
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
Severe: obs_number=258.0000, expected range: 336.4457 365.4431
HIGH RESO SEA TEMP Q (G/KG) PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_fgdepar=0.0172, expected range: -0.0062 0.0045
Severe: rms_fgdepar=0.0610, expected range: 0.0000 0.0138
airep
AIREP WIND VECTOR DIFF (M/S) UAL1092 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=21.6096, expected range: 0.0000 8.7339
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 57494 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=20.1029, expected range: 0.0000 8.5092
LAND PILOT WIND VECTOR DIFF (M/S) 41768 PRESSURE LAYER 300-600 (HPA) : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8790, expected range: -1.1632 0.7500
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 89014 : out of range
Severe: rms_fgdepar=503.4719, expected range: 0.0000 230.8468
Severe: avg_pge=0.8994, expected range: -0.5857 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 16089 : out of range
Severe: rms_fgdepar=500.2387, expected range: 0.0000 163.3746
AUTOMATIC LAND SYNOP RH2M (%) 41301 : out of range
Severe: rms_fgdepar=20.2800, expected range: 0.0000 10.6835
AUTOMATIC LAND SYNOP RH2M (%) 68349 : out of range
Severe: rms_fgdepar=29.2634, expected range: 0.0000 12.8575
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83700 : out of range
Severe: rms_fgdepar=716.0598, expected range: 0.0000 256.0817
Severe: avg_pge=0.9187, expected range: -0.6019 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 65473 : out of range
Severe: rms_fgdepar=687.4815, expected range: 0.0000 253.3861
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42393 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=445.4191, expected range: 0.0000 165.9705
Severe: avg_pge=0.8490, expected range: -0.8652 0.7500
MANUAL LAND SYNOP RH2M (%) 17061 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=51.0629, expected range: 0.0000 20.8092
MANUAL LAND SYNOP RH2M (%) 68242 : out of range
Severe: rms_fgdepar=26.9427, expected range: 0.0000 13.8330
MANUAL LAND SYNOP RH2M (%) 43025 : out of range
Severe: avg_pge=0.9184, expected range: -0.0128 0.0220
MANUAL LAND SYNOP Z (M) 43356 : out of range
Severe: avg_pge=0.9287, expected range: -1.3776 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48037 : out of range
Severe: avg_pge=0.8042, expected range: -1.0035 0.7500
BUFR LAND SYNOP RH2M (%) 94542 : out of range
Severe: rms_fgdepar=68.0043, expected range: 0.0000 34.4958
ship
ABBREVIATED SHIP SURFACE PRESSURE (PA) WTDF : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8654, expected range: -0.9502 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) MERFR14 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8409, expected range: -0.9209 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) 45023 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8020, expected range: 0.3927 0.7500
SHIP SURFACE PRESSURE (PA) 9V3532 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8231, expected range: -0.6488 0.7500
SHIP SURFACE PRESSURE (PA) D5LA6 : out of range
Severe: avg_pge=0.8204, expected range: -1.0916 0.7500
SHIP SURFACE PRESSURE (PA) C6YR6 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8644, expected range: -0.8224 0.7500
SHIP SURFACE PRESSURE (PA) WROT : out of range
Severe: rms_fgdepar=1139.4344, expected range: 0.0000 509.7395
Severe: avg_pge=0.9430, expected range: -1.2072 0.7500
SHIP WIND VECTOR DIFF (M/S) C6SE7 : out of range
Severe: rms_fgdepar=20.0235, expected range: 0.0000 9.9003
Severe: avg_pge=0.8818, expected range: -1.2231 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 6301542 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=622.6586, expected range: -349.0415 520.7409
Severe: avg_pge=0.9132, expected range: -1.2760 0.7500
metar
AUTOMATIC METAR SURFACE PRESSURE (PA) KFOZ : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=193.4134, expected range: 0.0000 91.5282
METAR SURFACE PRESSURE (PA) KMLB : out of range
Severe: rms_fgdepar=321.9714, expected range: 0.0000 148.4650
AUTOMATIC METAR SURFACE PRESSURE (PA) PACZ : out of range
Severe: rms_fgdepar=331.3640, expected range: 0.0000 188.5975
AUTOMATIC METAR SURFACE PRESSURE (PA) : out of range
2 times in the last 10 days for at least one item
Considerable: rms_fgdepar=356.9429, expected range: 0.0000 225.1037
snow
BUFR LAND SYNOP SNOW (CM) : out of range
18 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0840, expected range: -0.0134 0.0104
Severely_persistent: avg_fgdepar=-0.7047, expected range: -0.1094 0.0981
MANUAL LAND SYNOP SNOW (CM) 16021 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=32.6937, expected range: -3.4774 6.0818
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8161, expected range: 0.7331 0.9435
METAR 2M TEMPERATURE (K) UGMS : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8517, expected range: 0.1502 1.1194
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8649, expected range: 0.2154 1.1385
LAND TEMP 2M TEMPERATURE (K) 56137 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8625, expected range: 0.6177 1.0184
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8498, expected range: 0.6242 1.0262
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71690 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.0533, expected range: 0.0000 3.7958
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 72376 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8059, expected range: -0.0356 1.1743
MANUAL LAND SYNOP 2M TEMPERATURE (K) 71940 : out of range
Severe: rms_fgdepar=10.5341, expected range: 0.0000 4.0286
MANUAL LAND SYNOP 2M TEMPERATURE (K) 51542 : out of range
Severe: avg_est_pge=0.8717, expected range: -0.3102 0.9911
MANUAL LAND SYNOP 2M TEMPERATURE (K) 56106 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8187, expected range: 0.5404 1.0045
METAR 2M TEMPERATURE (K) UIBB : out of range
Severe: rms_fgdepar=8.5132, expected range: 0.0000 4.8380
METAR 2M TEMPERATURE (K) DTTB : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.0088, expected range: 0.1820 2.7825
METAR 2M TEMPERATURE (K) KSCH : out of range
Severe: rms_fgdepar=10.5277, expected range: 0.0000 4.5945
METAR 2M TEMPERATURE (K) EGPH : out of range
Severe: rms_fgdepar=7.4028, expected range: 0.0000 3.2917
METAR 2M TEMPERATURE (K) ENGM : out of range
Severe: rms_fgdepar=9.9622, expected range: 0.0000 4.5325
METAR 2M TEMPERATURE (K) PAOM : out of range
Severe: rms_fgdepar=7.2187, expected range: 0.0000 3.0494
METAR 2M TEMPERATURE (K) KFFO : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.0368, expected range: 0.0000 4.4420
METAR 2M TEMPERATURE (K) CYQU : out of range
Severe: rms_fgdepar=10.3289, expected range: 0.0000 4.8043
METAR 2M TEMPERATURE (K) KCRW : out of range
Severe: rms_fgdepar=8.7370, expected range: 0.2394 4.6654
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
Severe: obs_number=161.0000, expected range: 131.4487 144.7618