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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-09-16 12:00

amsua
METOP-A/AMSUA RADIANCES CHANNEL 10 : out of range
3 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.6424, expected range: -0.1134 0.4739
METOP-A/AMSUA RADIANCES CHANNEL 11 : out of range
4 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.7070, expected range: -0.1634 0.4945
METOP-C/AMSUA RADIANCES CHANNEL 7 : out of range
Slight: stdev_fgdepar=0.1700, expected range: 0.1408 0.1652
iasi
METOP-A/IASI RADIANCES (208 channels affected) : out of range
Slight: obs_number=2785.0000, expected range: 5568.7412 29219.3223
METOP-A/IASI RADIANCES CHANNEL 312 : out of range
Slight: stdev_fgdepar=0.2900, expected range: 0.2408 0.2825
mhs
ALLSKY METOP-A/MHS RADIANCES (5 channels affected) : out of range
Considerable: obs_number=25853.0000, expected range: 27497.5776 31097.5803
gpsro
All TERRASAR-X SETTING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 0.00 1435.12
All TANDEM-X RISING ALL HEIGHTS Global : all data missing
Severe: obs_number=0, expected range: 14.50 1129.03
Radiosondes
LAND TEMP WIND VECTOR DIFF (M/S) 44373 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8175, expected range: -0.7072 0.7500
amdar
WIGOS AMDAR WIND VECTOR DIFF (M/S) 4HBK4UZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8264, expected range: -0.2995 0.5007
WIGOS AMDAR Q (G/KG) XWGY0OZA PRESSURE LAYER 900-1200 (HPA) : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8011, expected range: -1.0172 0.7500
airep
AIREP WIND VECTOR DIFF (M/S) ELY004 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.7509, expected range: 0.0000 8.8053
AIREP WIND VECTOR DIFF (M/S) AFR475 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=22.0774, expected range: 0.0000 12.4712
Severe: avg_pge=0.8365, expected range: -0.7746 0.7500
AIREP WIND VECTOR DIFF (M/S) AFR008 PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=15.8193, expected range: 0.0000 7.7546
AIREP WIND VECTOR DIFF (M/S) BAW21G PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=17.8762, expected range: 0.0000 8.8598
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 41780 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=21.8148, expected range: 0.0000 8.1117
synop
MANUAL LAND SYNOP RH2M (%) 40016 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9710, expected range: -1.6071 0.7500
MANUAL LAND SYNOP RH2M (%) 65215 : out of range
Severe: rms_fgdepar=47.4481, expected range: 0.0000 34.5900
Severe: avg_pge=0.9974, expected range: -0.0257 0.0376
MANUAL LAND SYNOP RH2M (%) 17195 : out of range
Severe: rms_fgdepar=18.9425, expected range: 0.0000 10.3859
MANUAL LAND SYNOP RH2M (%) 41946 : out of range
Severe: rms_fgdepar=35.5571, expected range: 0.0000 15.0082
Severe: avg_pge=0.9230, expected range: -0.0059 0.0132
MANUAL LAND SYNOP RH2M (%) 82879 : out of range
Severe: rms_fgdepar=22.7887, expected range: 0.0000 12.7065
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 76681 : out of range
Severe: rms_fgdepar=396.4384, expected range: 0.0000 189.1549
Severe: avg_pge=0.8027, expected range: -0.5782 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42143 : out of range
Severe: avg_pge=0.8084, expected range: -1.2145 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83683 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=639.7592, expected range: 0.0000 149.9785
Severe: avg_pge=0.8950, expected range: -0.5737 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42935 : out of range
Severe: avg_pge=0.8610, expected range: -1.4148 0.7500
BUFR LAND SYNOP RH2M (%) 72591 : out of range
Severe: rms_fgdepar=20.7509, expected range: 0.0000 10.5883
BUFR LAND SYNOP RH2M (%) 17607 : out of range
Severe: rms_fgdepar=37.2348, expected range: 0.0000 11.0791
BUFR LAND SYNOP RH2M (%) 81737 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9547, expected range: -1.0696 0.7500
BUFR LAND SYNOP RH2M (%) 26657 : out of range
Severe: rms_fgdepar=37.4335, expected range: 0.0000 17.7395
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61297 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8881, expected range: -0.7237 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61697 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=620.1970, expected range: 0.0000 141.5427
Severe: avg_pge=0.8734, expected range: -0.2163 0.2630
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61698 : out of range
Severe: rms_fgdepar=346.4919, expected range: 0.0000 171.4469
ship
AUTOMATIC SHIP SURFACE PRESSURE (PA) 44058 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8397, expected range: 0.7030 0.7500
ABBREVIATED SHIP WIND VECTOR DIFF (M/S) V7PQ5 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8039, expected range: -0.1742 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9048, expected range: 0.3085 0.7500
SHIP SURFACE PRESSURE (PA) C6XC2 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8281, expected range: -0.9114 0.7500
SHIP SURFACE PRESSURE (PA) 9HOB8 : out of range
Severe: rms_fgdepar=696.0931, expected range: 0.0000 410.6730
Severe: avg_pge=0.9122, expected range: -0.7150 0.7500
SHIP SURFACE PRESSURE (PA) H3VU : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8791, expected range: -0.9859 0.7500
SHIP WIND VECTOR DIFF (M/S) MAOR6 : out of range
Severe: rms_fgdepar=15.3766, expected range: 0.0000 8.7426
Severe: avg_pge=0.9016, expected range: -0.6751 0.7500
buoy
MOORED BUOYS SURFACE PRESSURE (PA) 6101001 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8214, expected range: -0.6535 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-8.7640, expected range: 0.0000 0.0000
DRIFTING BUOYS SURFACE PRESSURE (PA) 5301764 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=578.8022, expected range: 0.0000 249.0163
Severely_persistent: avg_pge=0.9074, expected range: -0.7613 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1701536 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8039, expected range: -0.5619 0.7500
metar
METAR SURFACE PRESSURE (PA) GOOD : out of range
Severe: rms_fgdepar=373.0832, expected range: 0.0000 207.7861
snow
BUFR LAND SYNOP SNOW (CM) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-0.0068, expected range: -0.0001 0.0001
Severely_persistent: rms_fgdepar=0.0426, expected range: -0.0011 0.0012
t2m
LAND TEMP 2M TEMPERATURE (K) 89009 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8391, expected range: 0.4472 1.0927
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 93678 : out of range
Severe: rms_fgdepar=9.5329, expected range: 0.0000 4.0982
MANUAL LAND SYNOP 2M TEMPERATURE (K) 67863 : out of range
Severe: rms_fgdepar=10.6363, expected range: 0.0000 3.1324
MANUAL LAND SYNOP 2M TEMPERATURE (K) 83925 : out of range
Severe: rms_fgdepar=8.7792, expected range: 0.0000 3.2521
MANUAL LAND SYNOP 2M TEMPERATURE (K) 61687 : out of range
Severe: rms_fgdepar=9.0800, expected range: 0.0000 4.3202
METAR 2M TEMPERATURE (K) UGMS : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8139, expected range: 0.2976 1.0398
METAR 2M TEMPERATURE (K) KNKT : out of range
Severe: rms_fgdepar=7.0447, expected range: 0.0000 3.9979
LAND TEMP 2M TEMPERATURE (K) 04417 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8144, expected range: 0.1619 1.1405
LAND TEMP 2M TEMPERATURE (K) 56137 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8568, expected range: 0.0099 1.1422
BUFR LAND SYNOP 2M TEMPERATURE (K) 86972 : out of range
Severe: rms_fgdepar=10.0536, expected range: 0.0000 3.0316
rh2m
MANUAL LAND SYNOP RH2M (%) 89606 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=20.8178, expected range: 0.0000 11.0813