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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-08-09 12:00

iasi
METOP-A/IASI RADIANCES (394 channels affected) : out of range
Severe: obs_number=120941.0000, expected range: 17837.7390 26736.3474
cris
NPP/CRIS RADIANCES (162 channels affected) : out of range
Severe: avg_biascorr=0.2421, expected range: 0.1115 0.1161
NPP/CRIS RADIANCES (108 channels affected) : out of range
Severe: obs_number=18375.0000, expected range: 9369.5651 9749.0317
NPP/CRIS RADIANCES (36 channels affected) : out of range
Severe: stdev_fgdepar=3.2878, expected range: 0.1915 0.2784
NPP/CRIS RADIANCES (33 channels affected) : out of range
Slight: avg_fgdepar=0.2404, expected range: -0.1390 0.0675
Radiosondes
LAND TEMP TEMPERATURE (K) 28695 PRESSURE LAYER 300-600 (HPA) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8222, expected range: -0.6558 0.7500
LAND TEMP TEMPERATURE (K) 32477 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=8.2829, expected range: 0.0000 4.1154
Severe: avg_pge=0.8896, expected range: -0.6890 0.7500
LAND TEMP TEMPERATURE (K) 78073 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=7.0131, expected range: 0.0000 2.5952
LAND TEMP WIND VECTOR DIFF (M/S) 32389 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=21.0928, expected range: 0.0000 7.2384
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=203.0000, expected range: 359.3719 381.1281
HIGH RESO LAND TEMP TEMPERATURE (K) PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: avg_biascorr=-0.0111, expected range: -0.0019 0.0024
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (2 pressure layers affected : out of range
2 times in the last 10 days for at least one item
Severe: obs_number=279.0000, expected range: 357.9002 381.9748
HIGH RESO LAND TEMP Q (G/KG) (2 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=203.0000, expected range: 347.6837 391.1913
HIGH RESO LAND TEMP Q (G/KG) 08190 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=7.0361, expected range: 0.0000 3.4390
HIGH RESO SEA TEMP Q (G/KG) XKQLWQB PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=2.1446, expected range: 0.0000 0.9223
HIGH RESO LAND TEMP TEMPERATURE (K) (3 pressure layers affected) : out of range
Considerable: avg_fgdepar=0.9297, expected range: -0.0239 0.5522
amdar
WIGOS AMDAR WIND VECTOR DIFF (M/S) EU0546 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=19.0056, expected range: 0.0000 6.2401
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 48480 (2 pressure layers affected) : out of range
Severe: avg_pge=0.8338, expected range: -1.0620 0.7500
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=0.8420, expected range: -0.7900 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42705 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8339, expected range: -1.2621 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42408 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8764, expected range: -1.3894 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 15337 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8154, expected range: -1.4331 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
2 times in the last 10 days for at least one item
Severe: avg_biascorr=110.0000, expected range: 0.0000 0.0000
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 89059 : out of range
Severe: rms_fgdepar=374.6502, expected range: 0.0000 220.1550
Severe: avg_pge=0.8749, expected range: -0.7081 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 67341 : out of range
Severe: rms_fgdepar=560.7649, expected range: 0.0000 82.6297
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42662 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8638, expected range: -1.1575 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 38705 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8133, expected range: -0.8046 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83115 : out of range
Severe: rms_fgdepar=381.7258, expected range: 0.0000 120.5346
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 59567 : out of range
Severe: rms_fgdepar=305.8653, expected range: 0.0000 149.2061
MANUAL LAND SYNOP RH2M (%) 42435 : out of range
Severe: rms_fgdepar=37.5707, expected range: 0.0000 29.4494
Severe: avg_pge=0.9880, expected range: -0.9331 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48325 : out of range
Severe: rms_fgdepar=516.9887, expected range: 0.0000 272.3982
BUFR LAND SYNOP RH2M (%) 08570 : out of range
Severe: rms_fgdepar=28.8003, expected range: 0.0000 14.1620
BUFR LAND SYNOP RH2M (%) 08251 : out of range
Severe: rms_fgdepar=24.8736, expected range: 0.0000 11.5212
BUFR LAND SYNOP RH2M (%) 33791 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=23.0631, expected range: 0.0000 12.9386
BUFR LAND SYNOP RH2M (%) 08534 : out of range
Severe: rms_fgdepar=29.1868, expected range: 0.0000 15.9614
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) VWSK : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8210, expected range: -0.9868 0.7500
SHIP SURFACE PRESSURE (PA) 9HJB9 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8218, expected range: -1.1454 0.7500
SHIP WIND VECTOR DIFF (M/S) WDC6055 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8869, expected range: -0.3034 0.7500
SHIP SURFACE PRESSURE (PA) KGTX : out of range
Severe: rms_fgdepar=447.5754, expected range: 0.0000 173.5719
SHIP WIND VECTOR DIFF (M/S) C6DQ5 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9127, expected range: -1.0589 0.7500
buoy
MOORED BUOYS WIND VECTOR DIFF (M/S) 1500001 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8415, expected range: 0.4373 0.7500
MOORED BUOYS WIND VECTOR DIFF (M/S) 3100231 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8940, expected range: 0.4124 0.7500
MOORED BUOYS WIND VECTOR DIFF (M/S) 5300056 : out of range
19 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9167, expected range: 0.7346 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2201558 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8509, expected range: -1.3651 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 2301719 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8208, expected range: 0.1598 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6301507 : out of range
Severe: avg_pge=0.8494, expected range: -1.4473 0.7500
metar
METAR SURFACE PRESSURE (PA) UTSA : out of range
Severe: rms_fgdepar=355.2855, expected range: 0.0000 105.1447
METAR SURFACE PRESSURE (PA) GQPP : out of range
Severe: rms_fgdepar=444.6752, expected range: 0.0000 199.1141
gbrad
GROUND-BASED RADAR WIND VECTOR DIFF (M/S) : out of range
7 times in the last 10 days for at least one item
Slight: avg_fgdepar=-0.1593, expected range: -0.1268 0.1118
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8118, expected range: 0.7431 0.8976
MANUAL LAND SYNOP 2M TEMPERATURE (K) 89504 : out of range
17 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8034, expected range: 0.7550 0.8997
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
6 times in the last 10 days for at least one item
Severely_persistent: obs_number=114.0000, expected range: 99.7962 103.9876
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8219, expected range: -0.0414 1.2487
MANUAL LAND SYNOP 2M TEMPERATURE (K) 13592 : out of range
Severe: rms_fgdepar=9.3338, expected range: 0.0000 4.3807
MANUAL LAND SYNOP 2M TEMPERATURE (K) 40945 : out of range
Severe: rms_fgdepar=16.6749, expected range: 0.0000 5.8289
Severe: avg_est_pge=0.8820, expected range: -0.0515 0.6026
METAR 2M TEMPERATURE (K) MMGM : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.0334, expected range: 0.0000 3.8848
METAR 2M TEMPERATURE (K) MMHO : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.1068, expected range: 0.4528 4.1223
LAND TEMP 2M TEMPERATURE (K) 56137 : out of range
4 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8274, expected range: 0.0128 1.2004
BUFR LAND SYNOP 2M TEMPERATURE (K) 89578 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8224, expected range: 0.0187 1.2206
BUFR LAND SYNOP 2M TEMPERATURE (K) 08479 : out of range
Severe: rms_fgdepar=7.8589, expected range: 0.0552 4.2516
rh2m
AUTOMATIC LAND SYNOP RH2M (%) : out of range
4 times in the last 10 days for at least one item
Severe: obs_number=96.0000, expected range: 79.4874 88.4585
BUFR LAND SYNOP RH2M (%) : out of range
4 times in the last 10 days for at least one item
Severe: obs_number=102.0000, expected range: 86.2639 93.1956
MANUAL LAND SYNOP RH2M (%) : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=108.0000, expected range: 55.7669 95.6617