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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-10-10 00:00

amsua
AQUA/AMSUA RADIANCES CHANNEL 9 : out of range
1 times in the last 10 days for at least one item
Severe: stdev_fgdepar=0.2112, expected range: 0.1277 0.1783
iasi
METOP-B/IASI RADIANCES (263 channels affected) : out of range
Severe: obs_number=16609.0000, expected range: 21414.4008 23705.5465
mhs
ALLSKY METOP-C/MHS RADIANCES (5 channels affected) : out of range
Severe: obs_number=22518.0000, expected range: 27337.9921 31079.1132
ALLSKY METOP-B/MHS RADIANCES (5 channels affected) : out of range
Considerable: obs_number=24707.0000, expected range: 27323.0142 31125.0940
ALLSKY METOP-A/MHS RADIANCES CHANNEL 3 : out of range
6 times in the last 10 days for at least one item
Slight: obs_number=39146.0000, expected range: 41534.3586 54490.1879
scatt
METOP-B/ASCAT WIND VECTOR DIFF (M/S) : out of range
Considerable: obs_number=29470.0000, expected range: 32172.9750 38383.7430
Radiosondes
LAND TEMP TEMPERATURE (K) 32618 PRESSURE LAYER 300-600 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.7185, expected range: 0.0000 4.9030
Severe: avg_pge=0.9100, expected range: -0.8930 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 34300 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8368, expected range: -0.8484 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 40754 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.9892, expected range: 0.7681 8.5836
LAND TEMP WIND VECTOR DIFF (M/S) 32618 PRESSURE LAYER 300-600 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=20.1095, expected range: 0.0000 15.5233
Severe: avg_pge=0.8046, expected range: -0.8906 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=651.0000, expected range: 541.4647 572.6405
HIGH RESO LAND TEMP Q (G/KG) 72265 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=3.9389, expected range: 0.0000 2.1184
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=460.0000, expected range: 386.2599 402.1846
amdar
WIGOS AMDAR TEMPERATURE (K) MZXYCOZA PRESSURE LAYER 0-300 (HPA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8910, expected range: -1.8517 0.7500
AMDAR TEMPERATURE (K) AFZA45 (2 pressure layers affected) : out of range
Severe: rms_fgdepar=6.6571, expected range: 0.0000 1.1402
AMDAR TEMPERATURE (K) AFZA45 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8408, expected range: -0.0114 0.0131
WIGOS AMDAR Q (G/KG) XWGY0OZA PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9775, expected range: -1.1697 0.7500
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=3.0000, expected range: 150.2676 187.4971
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27415 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8041, expected range: -0.5087 0.7500
BUFR LAND SYNOP RH2M (%) 01463 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9308, expected range: -1.9118 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42420 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8222, expected range: 0.3501 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40103 : out of range
Severe: rms_fgdepar=345.8684, expected range: 4.6948 159.5154
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40025 : out of range
Severe: rms_fgdepar=346.4059, expected range: 0.0000 123.4645
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42266 : out of range
Severe: rms_fgdepar=955.9506, expected range: 0.0000 358.0866
Severe: avg_pge=0.9416, expected range: -1.2932 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 31087 : out of range
Severe: rms_fgdepar=592.6469, expected range: 0.0000 213.6782
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83479 : out of range
Severe: rms_fgdepar=366.7368, expected range: 0.0000 156.1992
MANUAL LAND SYNOP RH2M (%) 42770 : out of range
Severe: rms_fgdepar=35.7041, expected range: 0.0000 27.6302
Severe: avg_pge=0.8616, expected range: -0.0089 0.0181
MANUAL LAND SYNOP RH2M (%) 65462 : out of range
Severe: rms_fgdepar=16.6964, expected range: 0.0000 8.3849
MANUAL LAND SYNOP RH2M (%) 94324 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=56.0021, expected range: 0.0000 11.2654
Severe: avg_pge=1.0000, expected range: 0.0009 0.0045
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61235 : out of range
Severe: rms_fgdepar=340.9211, expected range: 0.0000 127.2329
BUFR LAND SYNOP RH2M (%) 40400 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=1.0000, expected range: -1.8068 0.7500
BUFR LAND SYNOP RH2M (%) 48101 : out of range
Severe: rms_fgdepar=45.5981, expected range: 0.0000 23.3277
BUFR LAND SYNOP RH2M (%) 94324 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=57.4637, expected range: 0.0000 14.3858
BUFR LAND SYNOP RH2M (%) 72565 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=33.5451, expected range: 0.0000 18.6106
BUFR LAND SYNOP RH2M (%) 06747 : out of range
Severe: avg_pge=0.8714, expected range: -0.7866 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
4 times in the last 10 days for at least one item
Considerable: avg_biascorr=-1.5021, expected range: -4.6413 -2.7078
ship
SHIP SURFACE PRESSURE (PA) OXSQ2 : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8561, expected range: -1.1176 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8081, expected range: 0.1343 0.7500
SHIP WIND VECTOR DIFF (M/S) 9VDD2 : out of range
Severe: rms_fgdepar=15.7384, expected range: 0.0000 9.0544
Severe: avg_pge=0.8966, expected range: -0.6220 0.7500
SHIP WIND VECTOR DIFF (M/S) ONFZ : out of range
Severe: avg_pge=0.9010, expected range: -0.5112 0.7500
SHIP SURFACE PRESSURE (PA) OWIZ2 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8882, expected range: -1.4789 0.7500
SHIP SURFACE PRESSURE (PA) VRPJ6 : out of range
Severe: avg_pge=0.8540, expected range: -0.8863 0.7500
SHIP SURFACE PRESSURE (PA) AUFH : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8991, expected range: -0.6393 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 7401507 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8738, expected range: -0.2912 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4802506 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=311.3222, expected range: 0.0000 146.7435
DRIFTING BUOYS SURFACE PRESSURE (PA) 2501667 : out of range
Severe: rms_fgdepar=379.0880, expected range: 0.0000 189.4351
DRIFTING BUOYS SURFACE PRESSURE (PA) 2201559 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=1102.5382, expected range: 0.0000 138.9573
metar
METAR SURFACE PRESSURE (PA) OISL : out of range
Severe: rms_fgdepar=328.1045, expected range: 0.0000 178.6066
METAR SURFACE PRESSURE (PA) RJAW : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=376.6999, expected range: 0.0000 86.0014
snow
AUTOMATIC LAND SYNOP SNOW (CM) : out of range
4 times in the last 10 days for at least one item
Severe: avg_fgdepar=0.1103, expected range: -0.0040 0.0050
Severe: rms_fgdepar=1.2862, expected range: -0.0561 0.0702
MANUAL LAND SYNOP SNOW (CM) : out of range
2 times in the last 10 days for at least one item
Severe: avg_fgdepar=-4.6368, expected range: -0.3517 0.4049
Severe: rms_fgdepar=123.8844, expected range: -2.2955 3.1395
MANUAL LAND SYNOP SNOW (CM) 71924 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.4200, expected range: 0.0000 4.3426
BUFR LAND SYNOP SNOW (CM) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=1.1761, expected range: 62.8205 115.9718
Considerable: avg_fgdepar=0.0916, expected range: -4.8672 -1.8091
t2m
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8038, expected range: 0.7061 0.9191
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71855 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=11.5020, expected range: 0.0000 5.4441
MANUAL LAND SYNOP 2M TEMPERATURE (K) 17330 : out of range
Severe: rms_fgdepar=7.1793, expected range: 1.0019 4.5009
MANUAL LAND SYNOP 2M TEMPERATURE (K) 25551 : out of range
Severe: rms_fgdepar=7.1995, expected range: 0.0000 3.5993
METAR 2M TEMPERATURE (K) UTAA : out of range
Severe: rms_fgdepar=7.4911, expected range: 0.7712 3.4513
METAR 2M TEMPERATURE (K) KBJC : out of range
Severe: rms_fgdepar=9.6070, expected range: 0.7517 5.4849
METAR 2M TEMPERATURE (K) KBKF : out of range
Severe: rms_fgdepar=9.1337, expected range: 1.3324 4.8881
METAR 2M TEMPERATURE (K) KFTG : out of range
Severe: rms_fgdepar=12.3313, expected range: 1.1341 6.3574
METAR 2M TEMPERATURE (K) KDEN : out of range
Severe: rms_fgdepar=10.3711, expected range: 1.2479 5.5801
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8123, expected range: 0.0287 1.2562
rh2m
MANUAL LAND SYNOP RH2M (%) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=124.0000, expected range: 88.3726 107.1409