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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2021-02-27 00:00

amsua
NOAA-19 AMSUA RADIANCES CHANNEL 6 : out of range
Severe: stdev_fgdepar=0.1890, expected range: 0.1348 0.1538
NOAA-15 AMSUA RADIANCES CHANNEL 7 : out of range
Considerable: obs_number=2087.0000, expected range: 267.0786 1656.4214
NOAA-19 AMSUA RADIANCES CHANNEL 9 : out of range
Considerable: stdev_fgdepar=0.1935, expected range: 0.1590 0.1817
iasi
METOP-C IASI RADIANCES CHANNEL 3452 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1199, expected range: 0.1493 0.1686
METOP-C IASI RADIANCES CHANNEL 3252 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=0.1385, expected range: 0.1816 0.2151
METOP-A IASI RADIANCES CHANNEL 3452 : out of range
4 times in the last 10 days for at least one item
Severe: avg_biascorr=0.1018, expected range: 0.1188 0.1395
METOP-B IASI RADIANCES (62 channels affected) : out of range
Considerable: obs_number=2371.0000, expected range: 1932.9928 2253.6322
cris
NPP CRIS RADIANCES (52 channels affected) : out of range
Severe: obs_number=17819.0000, expected range: 22032.2706 22594.7294
NOAA20 CRIS RADIANCES (45 channels affected) : out of range
Considerable: obs_number=5707.0000, expected range: 6234.6543 7191.7207
atms
NPP ATMS RADIANCES (15 channels affected) : out of range
Considerable: obs_number=18712.0000, expected range: 20680.3275 24517.1725
NOAA20 ATMS RADIANCES (7 channels affected) : out of range
Considerable: obs_number=9463.0000, expected range: 10434.5828 11889.2922
Atmospheric Motion Vector
METEOSAT-11 AMV CLOUDY WV2 WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 : out of range
Considerable: obs_number=1711.0000, expected range: 2148.2396 2707.5104
NOAA20 VIIRS-AMV IR WIND VECTOR DIFF (M/S) PRESSURE LAYER 300-600 (HPA : out of range
Considerable: obs_number=1269.0000, expected range: 1924.7535 3082.9965
resat
All NOAA-19 SBUV ALL LAYERS Global : all data missing
Severe: obs_number=0, expected range: 145.81 733.33
Radiosondes
LAND TEMP TEMPERATURE (K) 60715 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8395, expected range: -0.1031 0.1641
Severe: rms_fgdepar=11.2638, expected range: 0.0000 1.9730
Severe: avg_fgdepar=11.2566, expected range: -1.1817 1.2017
HIGH RESO LAND TEMP Q (G/KG) (3 pressure layers affected) : out of range
Severe: obs_number=211.0000, expected range: 290.6425 307.8019
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 56080 PRESSURE LAYER 300-60 : out of range
Severe: rms_fgdepar=25.0645, expected range: 0.0000 8.4559
HIGH RESO LAND TEMP TEMPERATURE (K) 56046 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: avg_pge=0.8748, expected range: -0.7425 0.7500
HIGH RESO LAND TEMP TEMPERATURE (K) 72645 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=6.4217, expected range: 0.0000 2.4988
HIGH RESO LAND TEMP Q (G/KG) PRESSURE LAYER 600-900 (HPA) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=57.0000, expected range: 77.3217 87.9283
HIGH RESO SEA TEMP TEMPERATURE (K) (2 pressure layers affected) : out of range
Considerable: obs_number=349.0000, expected range: 62.8980 134.1020
amdar
ADS-C WIND VECTOR DIFF (M/S) E4HTTKZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=18.3757, expected range: 1.1063 7.2763
ADS-C WIND VECTOR DIFF (M/S) OQGDSDZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=33.8864, expected range: 0.0000 9.9040
ADS-C WIND VECTOR DIFF (M/S) 3FOEDQRA PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=22.8055, expected range: 0.0000 51.5197
ADS-C WIND VECTOR DIFF (M/S) 44C0KKRA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=23.9567, expected range: 0.0000 19.5370
Severe: avg_fgdepar=21.6122, expected range: -2.0516 13.9196
ADS-C WIND VECTOR DIFF (M/S) 12KEILJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=20.1857, expected range: 0.0000 14.4972
ADS-C WIND VECTOR DIFF (M/S) BU01OHJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=21.3290, expected range: 0.0000 11.3468
ADS-C WIND VECTOR DIFF (M/S) UEYEQGJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=26.2510, expected range: 0.0000 8.9766
airep
AIREP WIND VECTOR DIFF (M/S) ACA874 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=19.8965, expected range: 0.3998 7.2616
AIREP WIND VECTOR DIFF (M/S) UAL14 PRESSURE LAYER 0-300 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=25.5999, expected range: 0.0000 11.3822
AIREP WIND VECTOR DIFF (M/S) ETH552 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=21.3541, expected range: 0.0000 16.1059
AIREP WIND VECTOR DIFF (M/S) THY181 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=15.1902, expected range: 0.0032 7.4400
AIREP WIND VECTOR DIFF (M/S) AAL70 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=22.7347, expected range: 0.0000 25.5522
AIREP WIND VECTOR DIFF (M/S) UAL950 PRESSURE LAYER 0-300 (HPA) : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=24.1379, expected range: 0.0000 27.5925
AIREP WIND VECTOR DIFF (M/S) VIR540 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=22.7945, expected range: 0.0000 9.9268
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 41624 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=18.1009, expected range: 0.6429 5.8388
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 18138 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8462, expected range: 0.6348 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 18162 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=764.9413, expected range: 551.8858 932.1475
Severely_persistent: avg_fgdepar=764.3640, expected range: 551.0750 931.6043
MANUAL LAND SYNOP RH2M (%) 76775 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=1.0000, expected range: -1.7588 0.7500
Severely_persistent: rms_fgdepar=57.4699, expected range: 0.0000 97.5706
Severely_persistent: avg_fgdepar=57.4699, expected range: -36.1725 97.5706
MANUAL LAND SYNOP RH2M (%) 38545 : out of range
8 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9730, expected range: -1.6851 0.7500
Severely_persistent: rms_fgdepar=59.6417, expected range: 0.0000 98.6031
Severely_persistent: avg_fgdepar=59.6417, expected range: -56.1424 105.4506
MANUAL LAND SYNOP RH2M (%) 43291 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9437, expected range: -0.1656 0.1940
AUTOMATIC LAND SYNOP RH2M (%) 68819 : out of range
Severe: avg_pge=0.8862, expected range: -0.0159 0.0294
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 83718 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8098, expected range: 0.5024 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42450 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9313, expected range: 0.0718 0.7500
Severe: rms_fgdepar=834.6015, expected range: 20.6814 218.4120
Severe: avg_fgdepar=834.6015, expected range: -218.4120 -20.6814
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 87540 : out of range
Severe: rms_fgdepar=388.2883, expected range: 0.0000 155.9196
MANUAL LAND SYNOP RH2M (%) 36859 : out of range
Severe: rms_fgdepar=51.4078, expected range: 0.0000 92.8661
MANUAL LAND SYNOP RH2M (%) 40708 : out of range
4 times in the last 10 days for at least one item
Severe: avg_pge=0.9728, expected range: -0.0439 0.0608
Severe: rms_fgdepar=62.9058, expected range: 0.0000 44.6655
Severe: avg_fgdepar=62.9058, expected range: -17.2514 48.6503
MANUAL LAND SYNOP RH2M (%) 38207 : out of range
Severe: rms_fgdepar=53.9933, expected range: 0.0000 59.9743
Severe: avg_fgdepar=53.9933, expected range: -38.6857 62.1360
MANUAL LAND SYNOP RH2M (%) 38343 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=53.6791, expected range: 0.0000 56.9857
Severe: avg_fgdepar=53.0901, expected range: -54.5052 72.1087
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27648 : out of range
Severe: rms_fgdepar=496.5880, expected range: 0.0000 152.2686
BUFR LAND SYNOP SURFACE PRESSURE (PA) 33297 : out of range
Severe: rms_fgdepar=536.6866, expected range: 0.0000 225.4913
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61296 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=468.6798, expected range: 0.0000 185.9730
BUFR LAND SYNOP SURFACE PRESSURE (PA) 71376 : out of range
Severe: avg_pge=0.8278, expected range: -0.2698 0.4006
Severe: rms_fgdepar=368.0420, expected range: 0.0000 128.5475
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48385 : out of range
Severe: rms_fgdepar=323.7642, expected range: 15.4641 153.2659
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94654 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8127, expected range: -0.8368 0.7500
BUFR LAND SYNOP RH2M (%) 53231 : out of range
Severe: rms_fgdepar=31.7918, expected range: 0.0000 10.2549
BUFR LAND SYNOP SURFACE PRESSURE (PA) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=56.0000, expected range: 60.7873 65.9627
ship
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 46147 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8466, expected range: -0.7088 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) WSAF : out of range
15 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9167, expected range: -0.8859 0.7500
Severely_persistent: rms_fgdepar=1101.2645, expected range: 0.0000 2774.1160
Severely_persistent: avg_fgdepar=-1101.2025, expected range: -4070.0859 3236.5070
BUFR SHIP SYNOP SURFACE PRESSURE (PA) KFMV : out of range
Severe: rms_fgdepar=589.4096, expected range: 0.0000 252.6792
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V9558 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=547.2237, expected range: 99.3223 948.7229
Severe: avg_fgdepar=547.2237, expected range: 101.4489 944.8165
BUFR SHIP SYNOP SURFACE PRESSURE (PA) 9V9408 : out of range
Severe: avg_pge=0.8299, expected range: -1.1696 0.7500
BUFR SHIP SYNOP SURFACE PRESSURE (PA) VRFT7 : out of range
Severe: avg_pge=0.8478, expected range: -0.7941 0.7500
Severe: rms_fgdepar=629.6801, expected range: 0.0000 310.0541
Severe: avg_fgdepar=-629.6801, expected range: -380.7297 293.8822
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 6202688 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8125, expected range: -1.6332 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 1501747 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8588, expected range: -1.3909 0.7500
DRIFTING BUOYS SURFACE PRESSURE (PA) 5401689 : out of range
3 times in the last 10 days for at least one item
Severe: avg_pge=0.8534, expected range: -0.2674 0.3391
Severe: rms_fgdepar=487.0490, expected range: 0.0000 148.4549
metar
METAR SURFACE PRESSURE (PA) OPSW : out of range
Severe: rms_fgdepar=425.7031, expected range: 0.0000 239.5570
METAR SURFACE PRESSURE (PA) SKPS : out of range
Severe: avg_pge=0.8160, expected range: -0.0181 0.0207
Severe: rms_fgdepar=658.6339, expected range: 0.0000 110.7248
Severe: avg_fgdepar=-658.6339, expected range: -129.8118 78.8821
METAR SURFACE PRESSURE (PA) DNJO : out of range
Severe: rms_fgdepar=576.2240, expected range: 0.0000 234.9222
METAR SURFACE PRESSURE (PA) DGAA : out of range
Severe: rms_fgdepar=370.3638, expected range: 0.0000 89.1446
snow
MANUAL LAND SYNOP SNOW (CM) 20107 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=94.8660, expected range: 83.6313 102.6073
Severely_persistent: avg_fgdepar=94.8660, expected range: 83.6313 102.6073
MANUAL LAND SYNOP SNOW (CM) 30815 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=60.9135, expected range: 57.6054 70.0971
Severely_persistent: avg_fgdepar=60.9135, expected range: 57.6054 70.0971
MANUAL LAND SYNOP SNOW (CM) 28862 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=74.8971, expected range: -52.5210 85.8121
Severely_persistent: avg_fgdepar=74.8971, expected range: -61.3359 88.3687
ROCOB TEMP SNOW (CM) 63309115 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=58.4794, expected range: 44.1326 58.4760
Severely_persistent: avg_fgdepar=-58.4794, expected range: -58.4760 -44.1326
BUFR LAND SYNOP SNOW (CM) 20107 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=92.8885, expected range: 81.1611 100.5069
Severely_persistent: avg_fgdepar=92.8885, expected range: 81.1611 100.5069
BUFR LAND SYNOP SNOW (CM) 01036 : out of range
36 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=111.3934, expected range: 56.1907 152.8659
Severely_persistent: avg_fgdepar=-111.3934, expected range: -152.8967 -56.0931
BUFR LAND SYNOP SNOW (CM) 30815 : out of range
18 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=61.1990, expected range: 57.8250 70.4289
Severely_persistent: avg_fgdepar=61.1990, expected range: 57.8250 70.4289
BUFR LAND SYNOP SNOW (CM) 28862 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=74.8971, expected range: -52.5210 85.8121
Severely_persistent: avg_fgdepar=74.8971, expected range: -61.3359 88.3687
BUFR LAND SYNOP SNOW (CM) 01091 : out of range
38 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=97.5162, expected range: 60.7818 125.0821
Severely_persistent: avg_fgdepar=-97.5133, expected range: -125.0640 -60.7901
BUFR LAND SYNOP SNOW (CM) 01480 : out of range
26 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=58.5714, expected range: 58.0650 69.6681
Severely_persistent: avg_fgdepar=-58.5714, expected range: -69.6643 -58.0667
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 52955 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=12.8647, expected range: 0.0000 15.2013
Severe: avg_fgdepar=12.8647, expected range: -14.0080 19.3466
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71855 : out of range
Severe: rms_fgdepar=12.6747, expected range: 0.0000 7.4341
Severe: avg_fgdepar=12.6038, expected range: -9.4274 7.4504
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71835 : out of range
Severe: rms_fgdepar=10.7454, expected range: 0.4223 3.3686
MANUAL LAND SYNOP 2M TEMPERATURE (K) 48810 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=15.9375, expected range: 4.4615 15.0915
Severe: avg_fgdepar=-15.9375, expected range: -15.0919 -4.4598
METAR 2M TEMPERATURE (K) LICJ : out of range
Severe: rms_fgdepar=12.2889, expected range: 0.7737 3.5829
METAR 2M TEMPERATURE (K) EGHH : out of range
Severe: rms_fgdepar=18.8665, expected range: 0.0000 2.0911
Severe: avg_fgdepar=18.8665, expected range: -1.0693 1.0483
BUFR LAND SYNOP 2M TEMPERATURE (K) 71855 : out of range
Severe: rms_fgdepar=12.6679, expected range: 0.0000 7.4809
Severe: avg_fgdepar=12.5972, expected range: -9.4756 7.4094
BUFR LAND SYNOP 2M TEMPERATURE (K) 48810 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=15.9875, expected range: 4.5115 15.1415
Severe: avg_fgdepar=-15.9875, expected range: -15.1419 -4.5098
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
Considerable: obs_number=1630.0000, expected range: 1784.1558 1908.8442
BUFR LAND SYNOP 2M TEMPERATURE (K) : out of range
2 times in the last 10 days for at least one item
Considerable: obs_number=80.0000, expected range: 101.2510 118.9843
Considerable: obs_number=230.0000, expected range: 288.0554 372.1946
rh2m
MANUAL LAND SYNOP RH2M (%) 42077 : out of range
Severe: rms_fgdepar=37.6168, expected range: 0.0000 19.6362
BUFR LAND SYNOP RH2M (%) : out of range
Considerable: obs_number=81.0000, expected range: 97.7804 127.2196