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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2021-10-25 00:00

iasi
METOP-B IASI RADIANCES CHANNEL 1513 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0802, expected range: -0.0938 -0.0912
METOP-B IASI RADIANCES CHANNEL 1521 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0708, expected range: -0.0959 -0.0921
METOP-B IASI RADIANCES CHANNEL 1658 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1163, expected range: 0.0588 0.0810
METOP-C IASI RADIANCES CHANNEL 1513 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.0056, expected range: -0.0156 -0.0146
METOP-B IASI RADIANCES (19 channels affected) : out of range
Considerable: obs_number=2002.0000, expected range: 2116.3909 2365.2341
METOP-C IASI RADIANCES CHANNEL 1652 : out of range
3 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.1092, expected range: 0.0746 0.0968
METOP-C IASI RADIANCES (15 channels affected) : out of range
Considerable: obs_number=1984.0000, expected range: 2099.3329 2384.9171
METOP-B IASI RADIANCES CHANNEL 3575 : out of range
Slight: avg_fgdepar=0.1125, expected range: 0.0088 0.0897
atms
NOAA20 ATMS RADIANCES CHANNEL 15 : out of range
Considerable: stdev_fgdepar=0.7230, expected range: 0.5121 0.6480
gpsro
COSMIC2-E3 GPSRO SETTING HEIGHT 12-14 KM : out of range
Considerable: stdev_norm_fgdepar=0.8290, expected range: 0.9372 1.1527
Atmospheric Motion Vector
NOAA20 VIIRS-AMV IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HPA) : out of range
Slight: avg_press=253.1441, expected range: 265.8254 285.9019
resat
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 1-2 (HPA) : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0110, expected range: -0.0055 0.0002
NOAA-19 SBUV OZONE, TOP PRESSURE LAYER 640-641 (HPA) : out of range
2 times in the last 10 days for at least one item
Slight: avg_fgdepar=-0.5188, expected range: -1.3149 -0.7169
Radiosondes
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 29 : all data missing
Severely_persistent: obs_number=0, expected range: 80.42 527.25
LAND TEMP TEMPERATURE (K) 31088 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=6.9442, expected range: 0.6436 2.8918
LAND TEMP WIND VECTOR DIFF (M/S) 36096 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_fgdepar=21.7372, expected range: -0.3882 3.3001
Severe: rms_fgdepar=21.7372, expected range: 0.0000 3.7943
Severe: avg_pge=0.8792, expected range: -0.0591 0.0693
HIGH RESO LAND TEMP TEMPERATURE (K) 17281 PRESSURE LAYER 900-1200 (HPA : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=-9.4639, expected range: -21.3022 11.1019
Severe: rms_fgdepar=9.4639, expected range: 0.0000 21.3022
Severe: avg_pge=0.9162, expected range: -0.2912 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) 54102 PRESSURE LAYER 900-1200 (HPA : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8922, expected range: -1.1692 0.7500
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 600-900 (HPA) : out of range
Considerable: obs_number=748.0000, expected range: 813.5821 921.4179
amdar
WIGOS AMDAR TEMPERATURE (K) DNSHPBRA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=10.7148, expected range: 0.0000 7.7853
WIGOS AMDAR TEMPERATURE (K) PU0EIERA PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=6.1490, expected range: 0.0000 0.9268
WIGOS AMDAR WIND VECTOR DIFF (M/S) DHMXR2ZA PRESSURE LAYER 900-1200 (H : out of range
Severe: rms_fgdepar=17.9403, expected range: 0.0000 5.9866
prof
EUROPEAN WIND PROFILER VECTOR DIFF (M/S) 14472 PRESSURE LAYER 300-600 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=17.2713, expected range: 0.0000 9.8972
Severe: avg_pge=0.8469, expected range: -1.2667 0.7500
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 43418 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=16.6047, expected range: 0.0000 11.9388
Severe: avg_pge=0.8799, expected range: -1.1795 0.7500
synop
BUFR LAND SYNOP SURFACE PRESSURE (PA) _MI1425D : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8516, expected range: 0.3999 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 91203 : out of range
Severe: avg_pge=0.8205, expected range: -0.9836 0.7500
MANUAL LAND SYNOP Z (M) 63740 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=73.7574, expected range: 1.0030 42.0328
BUFR LAND SYNOP RH2M (%) 13600 : out of range
Severe: avg_fgdepar=53.2311, expected range: -49.8805 65.6601
Severe: rms_fgdepar=53.2311, expected range: 0.0000 40.9711
Severe: avg_pge=0.9913, expected range: -0.0145 0.0276
BUFR LAND SYNOP RH2M (%) 11457 : out of range
Severe: rms_fgdepar=39.4709, expected range: 0.0000 10.5574
BUFR LAND SYNOP RH2M (%) 94229 : out of range
Severe: rms_fgdepar=35.0343, expected range: 0.0000 14.2165
BUFR LAND SYNOP RH2M (%) 11149 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=53.6094, expected range: -34.5157 24.8901
Severe: rms_fgdepar=53.6726, expected range: 0.0000 30.3667
Severe: avg_pge=0.8236, expected range: -0.0015 0.0087
BUFR LAND SYNOP RH2M (%) 41859 : out of range
Severe: rms_fgdepar=32.8987, expected range: 0.0000 14.7155
Severe: avg_pge=0.9226, expected range: -0.0090 0.0168
BUFR LAND SYNOP SURFACE PRESSURE (PA) 60253 : out of range
Severe: rms_fgdepar=360.8109, expected range: 3.3989 76.1750
Severe: avg_pge=0.8552, expected range: -0.1153 0.2013
BUFR LAND SYNOP SURFACE PRESSURE (PA) 16138 : out of range
Severe: rms_fgdepar=478.7676, expected range: 0.0000 52.9043
Severe: avg_pge=0.8851, expected range: -0.6320 0.7353
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30198 : out of range
Severe: rms_fgdepar=593.6455, expected range: 6.6173 100.5931
BUFR LAND SYNOP Z (M) 11201 : out of range
Severe: avg_pge=0.9173, expected range: -0.1076 0.1391
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V2171 : out of range
Severe: avg_fgdepar=-624.5927, expected range: -292.0489 305.8577
Severe: rms_fgdepar=624.5927, expected range: 0.0000 215.8854
Severe: avg_pge=0.8508, expected range: -0.5125 0.5962
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRJH7 : out of range
Severe: avg_fgdepar=669.2299, expected range: -113.5215 193.7316
Severe: rms_fgdepar=669.2299, expected range: 0.0000 152.7056
Severe: avg_pge=0.8358, expected range: -0.0334 0.0385
BUFR SHIP SYNOP SURFACE PRESSURE (PA) UCSJ : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=-901.3034, expected range: -292.3859 181.1978
Severe: rms_fgdepar=901.3034, expected range: 0.0000 478.1112
Severe: avg_pge=0.9044, expected range: -1.4149 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) UERK : out of range
Severe: rms_fgdepar=478.8394, expected range: 0.0000 308.5177
Severe: avg_pge=0.8026, expected range: -0.8425 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) UAST : out of range
Severe: avg_fgdepar=609.5709, expected range: 71.8873 1562.9045
Severe: rms_fgdepar=609.5709, expected range: 71.8873 1562.9045
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 6204572 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8052, expected range: -0.0930 0.7500
MOORED BUOYS WIND VECTOR DIFF (M/S) 4600073 : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=20.5028, expected range: -1.0890 11.1839
Severe: rms_fgdepar=20.7676, expected range: 0.0000 13.5177
Severe: avg_pge=0.9344, expected range: -0.0945 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4701739 : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=-639.4289, expected range: -529.7896 555.4771
Severe: rms_fgdepar=651.0347, expected range: 0.0000 467.6558
Severe: avg_pge=0.8981, expected range: -1.1657 0.7500
metar
AUTOMATIC METAR SURFACE PRESSURE (PA) KQFW : out of range
33 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-538.4424, expected range: -598.4000 -447.2479
Severely_persistent: rms_fgdepar=540.5600, expected range: 448.8667 599.0524
METAR SURFACE PRESSURE (PA) LIPF : out of range
Severe: rms_fgdepar=475.3001, expected range: 0.0000 124.7193
METAR SURFACE PRESSURE (PA) LIQW : out of range
Severe: rms_fgdepar=522.8049, expected range: 0.0000 220.8801
AUTOMATIC METAR SURFACE PRESSURE (PA) KHTH : out of range
Severe: rms_fgdepar=343.3458, expected range: 0.0000 171.2343
snow
BUFR LAND SYNOP SNOW (CM) _MI10DB0 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=51.2143, expected range: 37.7721 62.1290
BUFR LAND SYNOP SNOW (CM) _MI10DB0 : out of range
22 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=51.8039, expected range: 38.8864 62.7508
BUFR LAND SYNOP SNOW (CM) _MI1EDCD : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=100.0000, expected range: 97.3883 101.5181
BUFR LAND SYNOP SNOW (CM) _MI1EDCD : out of range
20 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=100.0000, expected range: 97.3884 101.5180
BUFR LAND SYNOP SNOW (CM) 11138 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=101.5266, expected range: -12.7939 0.0568
Severe: rms_fgdepar=101.5266, expected range: 0.0000 18.9958
t2m
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI187D8 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.2045, expected range: -9.4984 5.7137
BUFR LAND SYNOP 2M TEMPERATURE (K) _MI187D8 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=15.2045, expected range: 0.0000 6.8954
MANUAL LAND SYNOP 2M TEMPERATURE (K) 42792 : out of range
Severe: avg_fgdepar=13.8469, expected range: -3.4777 8.4175
Severe: rms_fgdepar=13.8469, expected range: 0.0000 8.2489
MANUAL LAND SYNOP 2M TEMPERATURE (K) 21608 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.3738, expected range: 0.0953 2.0688
METAR 2M TEMPERATURE (K) SKBG : out of range
Severe: rms_fgdepar=10.5485, expected range: 0.0000 5.8027
BUFR LAND SYNOP 2M TEMPERATURE (K) 42792 : out of range
Severe: avg_fgdepar=13.7969, expected range: -3.5277 8.3675
Severe: rms_fgdepar=13.7969, expected range: 0.0000 8.1736
rh2m
MANUAL LAND SYNOP RH2M (%) 11024 : out of range
Severe: rms_fgdepar=36.0059, expected range: 0.0000 12.6385