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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2022-07-29 00:00

iasi
METOP-B IASI RADIANCES CHANNEL 1639 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=-0.1188, expected range: -0.0877 -0.0555
METOP-B IASI RADIANCES CHANNEL 1658 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0261, expected range: 0.0701 0.1059
cris
NOAA20 CRIS RADIANCES CHANNEL 989 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0454, expected range: 0.0665 0.0857
NOAA20 CRIS RADIANCES CHANNEL 1005 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.0865, expected range: 0.1105 0.1216
atms
All NPP ATMS ALL CHANNELS Global : all data missing
Severe: obs_number=0, expected range: 11840.75 14004.97
ssmis
DMSP-17 SSMIS RADIANCES CHANNEL 8 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.1226, expected range: 0.4890 0.5930
DMSP-17 SSMIS RADIANCES CHANNEL 9 : out of range
13 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0939, expected range: 0.5093 0.7259
DMSP-17 SSMIS RADIANCES CHANNEL 10 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0617, expected range: 0.5579 0.5786
DMSP-18 SSMIS RADIANCES CHANNEL 9 : out of range
14 times in the last 10 days for at least one item
Severely_persistent: stdev_norm_fgdepar=0.0794, expected range: 0.5113 0.5210
DMSP-17 SSMIS RADIANCES CHANNEL 11 : out of range
8 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0367, expected range: 0.6108 0.6108
DMSP-17 SSMIS RADIANCES CHANNEL 17 : out of range
10 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0829, expected range: 0.7707 0.7707
DMSP-18 SSMIS RADIANCES CHANNEL 10 : out of range
13 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0545, expected range: 0.5874 0.5874
DMSP-18 SSMIS RADIANCES CHANNEL 11 : out of range
10 times in the last 10 days for at least one item
Slight: stdev_norm_fgdepar=0.0341, expected range: 0.6393 0.6393
gpsro
TERRASAR-X GPSRO SETTING HEIGHT 22-24 KM : out of range
Slight: avg_norm_fgdepar=-0.4575, expected range: -0.3052 0.0243
Atmospheric Motion Vector
All AQUA MODIS CLEAR WV ALL LAYERS Global : all data missing
Severely_persistent: obs_number=0, expected range: 222.37 1895.63
All NPP VIIRS AMV IR ALL LAYERS Global : all data missing
Severe: obs_number=0, expected range: 349.89 1787.75
Radiosondes
LAND TEMP Q (G/KG) 38341 PRESSURE LAYER 900-1200 (HPA) : out of range
16 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=6.1240, expected range: 0.7365 9.5386
Severely_persistent: rms_fgdepar=6.1291, expected range: 0.8690 9.4588
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 20 : all data missing
Severely_persistent: obs_number=0, expected range: 138.06 178.27
All HIGH RESO SEA TEMP ALL LAYERS North East Pacific : all data missing
Severely_persistent: obs_number=0, expected range: 5.02 505.98
LAND TEMP Q (G/KG) 31538 PRESSURE LAYER 300-600 (HPA) : out of range
Severe: rms_fgdepar=3.0824, expected range: 0.0000 0.9504
LAND TEMP Q (G/KG) 31873 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=4.8208, expected range: 0.0000 2.6140
LAND TEMP Q (G/KG) 40417 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=5.4018, expected range: 0.0000 3.0400
HIGH RESO LAND TEMP Q (G/KG) 59280 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=3.7087, expected range: 0.0000 2.0924
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=380.0000, expected range: 186.4866 196.6245
Severe: obs_number=152.0000, expected range: 88.0032 96.6635
Severe: obs_number=192.0000, expected range: 281.0148 297.4296
All HIGH RESO LAND TEMP ALL LAYERS WMO BLOCK 42 : all data missing
Severe: obs_number=0, expected range: 14.40 284.24
All HIGH RESO LAND TEMP ALL LAYERS South pole : all data missing
Severe: obs_number=0, expected range: 33.01 470.28
LAND TEMP Q (G/KG) PRESSURE LAYER 600-900 (HPA) : out of range
3 times in the last 10 days for at least one item
Considerable: rms_fgdepar=2.3250, expected range: 0.4461 1.6985
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA : out of range
Considerable: obs_number=568.0000, expected range: 652.4856 673.0144
amdar
WIGOS AMDAR TEMPERATURE (K) EU0133 PRESSURE LAYER 0-300 (HPA) : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8732, expected range: -1.6231 0.7500
WIGOS AMDAR TEMPERATURE (K) ZLK1T1ZA PRESSURE LAYER 900-1200 (HPA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8964, expected range: -1.1907 0.7500
ADS-C WIND VECTOR DIFF (M/S) WKPIFYBA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.4792, expected range: 1.2768 5.9000
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 83899 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=17.0680, expected range: 0.0000 8.5253
synop
MANUAL LAND SYNOP RH2M (%) 62124 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9408, expected range: -1.5300 0.7500
MANUAL LAND SYNOP RH2M (%) 60518 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8792, expected range: -1.8595 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42961 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8666, expected range: -1.7261 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 16325 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8188, expected range: 0.6515 0.7500
MANUAL LAND SYNOP RH2M (%) 76160 : out of range
Severe: rms_fgdepar=40.2096, expected range: 0.0000 18.5468
MANUAL LAND SYNOP RH2M (%) 41560 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9726, expected range: -1.3471 0.7500
MANUAL LAND SYNOP RH2M (%) 40821 : out of range
Severe: rms_fgdepar=39.1476, expected range: 0.0000 9.6376
Severe: rms_fgdepar=36.2560, expected range: 0.0000 9.9067
MANUAL LAND SYNOP RH2M (%) 40664 : out of range
Severe: rms_fgdepar=42.3487, expected range: 0.0000 9.2505
Severe: avg_pge=0.9842, expected range: 0.0020 0.0033
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 40821 : out of range
Severe: rms_fgdepar=381.2318, expected range: 0.0000 88.5663
BUFR LAND SYNOP RH2M (%) 81643 : out of range
Severe: avg_pge=0.8589, expected range: -0.0911 0.1241
BUFR LAND SYNOP RH2M (%) 10655 : out of range
Severe: rms_fgdepar=36.1667, expected range: 0.0000 16.9880
BUFR LAND SYNOP SURFACE PRESSURE (PA) 22563 : out of range
Severe: rms_fgdepar=390.8101, expected range: 0.0000 125.2351
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27316 : out of range
Severe: rms_fgdepar=336.9320, expected range: 0.0000 78.6079
Severe: avg_pge=0.8491, expected range: -0.2142 0.2431
ship
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V8585 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=624.0380, expected range: 515.4863 870.7904
Severely_persistent: rms_fgdepar=624.0380, expected range: 515.4863 870.7904
BUFR SHIP SYNOP SURFACE PRESSURE (PA) D5HN7 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=939.1135, expected range: 109.7870 1119.9942
Severely_persistent: rms_fgdepar=939.1135, expected range: 109.7870 1119.9942
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) VRCF6 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8133, expected range: -0.1188 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V6210 : out of range
Severe: avg_fgdepar=-576.9944, expected range: -173.1993 178.6798
Severe: rms_fgdepar=576.9944, expected range: 0.0000 247.5175
Severe: avg_pge=0.8456, expected range: -1.0387 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V7980 : out of range
3 times in the last 10 days for at least one item
Severe: avg_fgdepar=704.7448, expected range: -882.9008 1190.8406
Severe: rms_fgdepar=704.7448, expected range: 0.0000 926.0157
Severe: avg_pge=0.8528, expected range: -0.6752 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 6201065 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=328.4701, expected range: 73.8742 183.2012
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V9268 : out of range
Severe: avg_fgdepar=585.3580, expected range: -1089.0991 898.8381
Severe: rms_fgdepar=585.3580, expected range: 0.0000 956.5953
Severe: avg_pge=0.8379, expected range: -1.3343 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) C6ZJ4 : out of range
Severe: rms_fgdepar=19.2881, expected range: 0.0000 10.9452
Severe: avg_pge=0.9114, expected range: 0.1368 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) TBWUK99 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=18.5437, expected range: 1.5575 10.0983
Severe: avg_pge=0.9044, expected range: -0.5029 0.7500
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 1401817 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=701.1507, expected range: -702.1224 915.7766
Severely_persistent: rms_fgdepar=702.8847, expected range: 0.0000 733.1969
Severely_persistent: avg_pge=0.9125, expected range: -0.6538 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 4701747 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=605.5951, expected range: -831.8319 1453.0642
Severely_persistent: rms_fgdepar=606.1116, expected range: 0.0000 1318.1357
Severely_persistent: avg_pge=0.9086, expected range: -0.5391 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1501741 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=-819.0546, expected range: -250.5700 220.3980
Severe: rms_fgdepar=821.6604, expected range: 0.0000 380.5582
Severe: avg_pge=0.9296, expected range: -0.5979 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 6203751 : out of range
1 times in the last 10 days for at least one item
Severe: avg_fgdepar=535.6078, expected range: -192.8334 263.6174
Severe: rms_fgdepar=538.0828, expected range: -186.7674 277.5558
Severe: avg_pge=0.8896, expected range: -0.8359 0.7500
metar
METAR SURFACE PRESSURE (PA) OIFK : out of range
Severe: rms_fgdepar=320.4013, expected range: 0.0000 178.2865
snow
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-773.0568, expected range: -773.0099 -772.4905
BUFR LAND SYNOP SNOW (CM) _MF1EB15 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=773.0568, expected range: 772.4907 773.0098
BUFR LAND SYNOP SNOW (CM) : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-23.2265, expected range: -178.9742 -111.9823
Severely_persistent: rms_fgdepar=142.5679, expected range: 608.3977 783.9916
t2m
BUFR LAND SYNOP 2M TEMPERATURE (K) 78896 : out of range
20 times in the last 10 days for at least one item
Severely_persistent: avg_fgdepar=-15.2905, expected range: -19.6736 -2.4815
Severely_persistent: rms_fgdepar=15.6507, expected range: 3.5326 19.7162
METAR 2M TEMPERATURE (K) CYKD : out of range
Severe: rms_fgdepar=11.4136, expected range: 0.0000 3.7600
METAR 2M TEMPERATURE (K) SCGE : out of range
Severe: avg_fgdepar=-19.4673, expected range: -2.1934 3.5953
Severe: rms_fgdepar=19.4673, expected range: 0.0000 4.3394
Severe: avg_est_pge=0.8051, expected range: -0.0722 0.1155
METAR 2M TEMPERATURE (K) KOUN : out of range
Severe: rms_fgdepar=11.3455, expected range: 0.5352 4.4524
LAND TEMP 2M TEMPERATURE (K) 72357 : out of range
Severe: rms_fgdepar=11.7378, expected range: 0.0000 4.0870
LAND TEMP 2M TEMPERATURE (K) 76679 : out of range
Severe: rms_fgdepar=11.1294, expected range: 0.0000 6.2707
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
4 times in the last 10 days for at least one item
Slight: obs_number=7735.0000, expected range: 11422.0168 12965.1082
Slight: obs_number=51513.0000, expected range: 109748.2360 164047.0140
rh2m
MANUAL LAND SYNOP RH2M (%) 83419 : out of range
Severe: rms_fgdepar=30.4681, expected range: 0.0000 15.4215
MANUAL LAND SYNOP RH2M (%) 08589 : out of range
Severe: rms_fgdepar=39.8852, expected range: 0.0000 20.8114
METAR RH2M (%) OIYY : out of range
Severe: rms_fgdepar=30.3375, expected range: 0.0000 11.9689
LAND TEMP RH2M (%) 17196 : out of range
Severe: rms_fgdepar=34.8031, expected range: 0.0000 18.0531
BUFR LAND SYNOP RH2M (%) 95660 : out of range
Severe: rms_fgdepar=31.3760, expected range: 0.0000 13.2378
BUFR LAND SYNOP RH2M (%) : out of range
2 times in the last 10 days for at least one item
Slight: obs_number=5957.0000, expected range: 7413.9446 9809.6804