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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-08-13 12:00

iasi
METOP-A/IASI RADIANCES (329 channels affected) : out of range
Severe: obs_number=119408.0000, expected range: 17837.7390 26736.3474
cris
NPP/CRIS RADIANCES (117 channels affected) : out of range
Severe: avg_biascorr=0.2526, expected range: 0.0632 0.2148
NPP/CRIS RADIANCES (152 channels affected) : out of range
Severe: obs_number=8655.0000, expected range: 4187.9437 6275.4324
NPP/CRIS RADIANCES (18 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=0.2512, expected range: -0.0527 0.0714
NPP/CRIS RADIANCES (24 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: stdev_fgdepar=3.2874, expected range: 0.1915 0.2784
mhs
ALLSKY NOAA-19/MHS RADIANCES CHANNEL 1 : out of range
Considerable: obs_number=9940.0000, expected range: 10429.3299 11693.9272
ALLSKY NOAA-19/MHS RADIANCES CHANNEL 4 : out of range
Considerable: obs_number=10162.0000, expected range: 10712.6332 12042.4526
ALLSKY NOAA-19/MHS RADIANCES CHANNEL 5 : out of range
Considerable: obs_number=9616.0000, expected range: 10091.0582 11350.5418
Radiosondes
LAND TEMP TEMPERATURE (K) 31977 (2 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.3048, expected range: 0.0000 3.0251
Severe: avg_pge=0.8226, expected range: -0.9452 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) 52267 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=29.6136, expected range: 0.0000 5.1996
Severe: avg_pge=0.8993, expected range: -0.1282 0.1847
LAND TEMP Q (G/KG) 57957 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_pge=0.9329, expected range: -0.3272 0.3725
LAND TEMP Q (G/KG) 97900 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=5.6136, expected range: 0.0000 2.3800
HIGH RESO LAND TEMP TEMPERATURE (K) 71924 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: avg_pge=0.8849, expected range: -0.3303 0.4238
HIGH RESO LAND TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
Severe: obs_number=459.0000, expected range: 522.2372 573.2922
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 27713 PRESSURE LAYER 600-90 : out of range
Severe: rms_fgdepar=16.0793, expected range: 0.3007 4.8421
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 04270 PRESSURE LAYER 900-12 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=19.8233, expected range: 0.0000 9.1843
Severe: avg_pge=0.9152, expected range: -0.8501 0.7500
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
Severe: obs_number=264.0000, expected range: 320.0418 335.9582
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=0.4303, expected range: 0.0000 0.1479
amdar
WIGOS AMDAR WIND VECTOR DIFF (M/S) NEXFJLZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.0708, expected range: 0.0000 9.8335
WIGOS AMDAR WIND VECTOR DIFF (M/S) TN5GUUZA PRESSURE LAYER 900-1200 (H : out of range
Severe: rms_fgdepar=16.3313, expected range: 0.0000 6.7096
synop
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42523 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9022, expected range: -0.8167 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: avg_pge=0.8572, expected range: -1.4572 0.7500
MANUAL LAND SYNOP RH2M (%) 40016 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9368, expected range: -1.0471 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 60018 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8302, expected range: 0.1776 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 68400 : out of range
Severe: rms_fgdepar=377.9201, expected range: 0.0000 169.3924
Severe: avg_pge=0.8342, expected range: -0.5957 0.7329
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86221 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8405, expected range: -0.7745 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 89066 : out of range
Severe: avg_pge=0.8167, expected range: -0.6710 0.7500
MANUAL LAND SYNOP Z (M) 38869 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9836, expected range: -0.8534 0.7500
MANUAL LAND SYNOP RH2M (%) 40691 : out of range
Severe: rms_fgdepar=19.1807, expected range: 0.0000 10.7283
MANUAL LAND SYNOP RH2M (%) 43303 : out of range
Severe: avg_pge=0.9714, expected range: -0.8388 0.7500
MANUAL LAND SYNOP RH2M (%) 41194 : out of range
Severe: avg_pge=0.9061, expected range: -0.1948 0.2407
MANUAL LAND SYNOP RH2M (%) 52378 : out of range
Severe: rms_fgdepar=24.0083, expected range: 0.0000 11.3189
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48921 : out of range
Severe: rms_fgdepar=907.8876, expected range: 0.0000 367.7534
Severe: avg_pge=0.9254, expected range: -1.0634 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61461 : out of range
Severe: avg_pge=0.8152, expected range: -1.4548 0.7500
BUFR LAND SYNOP RH2M (%) : out of range
Considerable: obs_number=918.0000, expected range: 960.7136 1109.1752
ship
SHIP WIND VECTOR DIFF (M/S) VRBR8 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8832, expected range: -1.2682 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) ATVK : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=637.1630, expected range: 0.0000 188.7561
Severe: avg_pge=0.9137, expected range: -0.9892 0.7500
SHIP SURFACE PRESSURE (PA) 9VKQ2 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8008, expected range: -0.7743 0.7500
SHIP SURFACE PRESSURE (PA) OXES2 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.8732, expected range: -1.4407 0.7500
SHIP SURFACE PRESSURE (PA) MABI4 : out of range
Severe: avg_pge=0.8311, expected range: -1.1984 0.7500
SHIP SURFACE PRESSURE (PA) 9HA3047 : out of range
Severe: rms_fgdepar=553.9010, expected range: 0.0000 409.5720
Severe: avg_pge=0.8153, expected range: 0.0990 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) : out of range
1 times in the last 10 days for at least one item
Slight: obs_number=4432.0000, expected range: 3890.0526 4279.1579
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 2501641 : out of range
Severe: rms_fgdepar=464.6858, expected range: 0.0000 100.9403
Severe: avg_pge=0.8727, expected range: -0.0016 0.0017
DRIFTING BUOYS SURFACE PRESSURE (PA) 3301606 : out of range
Severe: rms_fgdepar=449.6056, expected range: 0.0000 230.5604
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=3.5599, expected range: 0.0000 0.0000
metar
METAR SURFACE PRESSURE (PA) LIQB : out of range
Severe: rms_fgdepar=356.3798, expected range: 0.0000 172.7416
METAR SURFACE PRESSURE (PA) FQIN : out of range
Severe: rms_fgdepar=389.7332, expected range: 0.0000 88.4744
METAR SURFACE PRESSURE (PA) LIRT : out of range
Severe: rms_fgdepar=555.9138, expected range: 0.0000 160.4659
gbrad
GROUND-BASED RADAR WIND VECTOR DIFF (M/S) : out of range
8 times in the last 10 days for at least one item
Slight: obs_number=1133.0000, expected range: 1432.7100 3701.7032
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89734 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8104, expected range: 0.5162 1.0135
METAR 2M TEMPERATURE (K) OIGK : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8027, expected range: 0.0807 1.1533
MANUAL LAND SYNOP 2M TEMPERATURE (K) 60602 : out of range
Severe: rms_fgdepar=10.8726, expected range: 0.0000 5.4844
MANUAL LAND SYNOP 2M TEMPERATURE (K) 59562 : out of range
Severe: rms_fgdepar=11.2608, expected range: 0.1993 5.5012
MANUAL LAND SYNOP 2M TEMPERATURE (K) 40265 : out of range
Severe: rms_fgdepar=7.0074, expected range: 0.0000 3.3670
METAR 2M TEMPERATURE (K) KSRQ : out of range
Severe: rms_fgdepar=8.5989, expected range: 0.0875 4.0671
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=0.8354, expected range: -0.4876 1.3294
BUFR LAND SYNOP 2M TEMPERATURE (K) 95687 : out of range
Severe: rms_fgdepar=8.3312, expected range: 0.0000 4.6245
rh2m
MANUAL LAND SYNOP RH2M (%) 40783 : out of range
Severe: rms_fgdepar=26.0601, expected range: 0.0000 8.7375