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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

iasi
METOP-A/IASI RADIANCES (277 channels affected) : out of range
Severe: obs_number=118911.0000, expected range: 17837.7390 26736.3474
cris
NPP/CRIS RADIANCES (118 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: avg_biascorr=0.2542, expected range: 0.0597 0.2148
NPP/CRIS RADIANCES (156 channels affected) : out of range
Severe: obs_number=16023.0000, expected range: 6390.6062 8397.4073
NPP/CRIS RADIANCES (16 channels affected) : out of range
Severe: avg_fgdepar=0.1739, expected range: -0.0527 0.0714
NPP/CRIS RADIANCES (27 channels affected) : out of range
1 times in the last 10 days for at least one item
Severe: stdev_fgdepar=3.1078, expected range: 0.1915 0.2784
ssmis
DMSP-18/SSMIS RADIANCES CHANNEL 6 : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=1922.0000, expected range: 309.8427 1351.7935
DMSP-18/SSMIS RADIANCES CHANNEL 7 : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=1933.0000, expected range: 311.5676 1322.8126
DMSP-18/SSMIS RADIANCES CHANNEL 10 : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=1907.0000, expected range: 305.4006 1340.3012
DMSP-18/SSMIS RADIANCES CHANNEL 11 : out of range
4 times in the last 10 days for at least one item
Considerable: obs_number=1908.0000, expected range: 305.5883 1297.8109
Atmospheric Motion Vector
GOES-16/AMV CLOUDY WV3 WIND VECTOR DIFF (M/S) PRESSURE LAYER 0-300 (HP : out of range
2 times in the last 10 days for at least one item
Considerable: stdev_press=35.4213, expected range: 23.6468 33.0196
Radiosondes
LAND TEMP WIND VECTOR DIFF (M/S) 30372 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=17.0706, expected range: 0.0000 6.9263
LAND TEMP WIND VECTOR DIFF (M/S) 29839 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=20.3194, expected range: 0.0000 8.0193
Severe: avg_pge=0.8619, expected range: -0.3451 0.5202
LAND TEMP WIND VECTOR DIFF (M/S) 26075 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=20.8983, expected range: 0.0000 10.0457
Severe: avg_pge=0.8639, expected range: -0.6885 0.7500
LAND TEMP WIND VECTOR DIFF (M/S) PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=6.5301, expected range: 1.5349 4.3393
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) 04270 PRESSURE LAYER 900-12 : out of range
Severe: rms_fgdepar=16.9600, expected range: 0.0000 8.2327
Severe: avg_pge=0.8794, expected range: -0.8441 0.7500
HIGH RESO LAND TEMP WIND VECTOR DIFF (M/S) (3 pressure layers affected : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=279.0000, expected range: 365.4208 383.2042
pilot
LAND PILOT WIND VECTOR DIFF (M/S) 48887 (2 pressure layers affected) : out of range
Severe: avg_pge=0.8539, expected range: -0.2745 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=0.8387, expected range: -1.0361 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43133 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9167, expected range: 0.2926 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42078 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9112, expected range: -0.2641 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=0.8170, expected range: 0.4445 0.7500
BUFR LAND SYNOP RH2M (%) 71774 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9717, expected range: -0.6713 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 41301 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.9962, expected range: -0.8356 0.7500
AUTOMATIC LAND SYNOP RH2M (%) 35167 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9748, expected range: -0.3931 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 43111 : out of range
Severe: rms_fgdepar=859.2510, expected range: 0.0000 169.7094
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86221 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=610.0742, expected range: 0.0000 545.6240
Severe: avg_pge=0.9100, expected range: -0.7775 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 37871 : out of range
Severe: rms_fgdepar=552.1196, expected range: 0.0000 292.1636
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 98133 : out of range
Severe: rms_fgdepar=831.6988, expected range: 0.0000 252.8039
Severe: avg_pge=0.8076, expected range: -0.6550 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 86086 : out of range
Severe: avg_pge=0.8032, expected range: -1.0558 0.7500
MANUAL LAND SYNOP RH2M (%) 40811 : out of range
Severe: avg_pge=0.8258, expected range: -1.1272 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48300 : out of range
Severe: rms_fgdepar=392.0847, expected range: 0.0000 176.3558
BUFR LAND SYNOP SURFACE PRESSURE (PA) 30603 : out of range
Severe: rms_fgdepar=503.0250, expected range: 0.0000 122.4285
BUFR LAND SYNOP SURFACE PRESSURE (PA) 27283 : out of range
Severe: rms_fgdepar=340.5374, expected range: 0.0000 150.5806
BUFR LAND SYNOP SURFACE PRESSURE (PA) 48409 : out of range
Severe: rms_fgdepar=400.1577, expected range: 0.0000 177.3093
BUFR LAND SYNOP SURFACE PRESSURE (PA) 94439 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8799, expected range: -1.4849 0.7500
BUFR LAND SYNOP RH2M (%) 72363 : out of range
3 times in the last 10 days for at least one item
Severe: rms_fgdepar=28.8318, expected range: 0.0000 12.7297
BUFR LAND SYNOP RH2M (%) 72747 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=55.9581, expected range: 0.0000 33.1228
Severe: avg_pge=0.9976, expected range: -0.5883 0.6642
BUFR LAND SYNOP RH2M (%) 60177 : out of range
Severe: rms_fgdepar=48.8758, expected range: 0.0000 22.1330
BUFR LAND SYNOP RH2M (%) 94318 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8939, expected range: -1.5887 0.7500
ship
SHIP WIND VECTOR DIFF (M/S) V7TR6 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8396, expected range: -0.0786 0.7500
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=0.8621, expected range: -1.1947 0.7500
SHIP WIND VECTOR DIFF (M/S) VRJZ9 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8635, expected range: -0.3961 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8790, expected range: 0.0757 0.7500
SHIP SURFACE PRESSURE (PA) 9VKQ2 : out of range
Severe: avg_pge=0.8364, expected range: -0.7579 0.7500
SHIP SURFACE PRESSURE (PA) VRKQ5 : out of range
Severe: rms_fgdepar=371.6739, expected range: 0.0000 181.1453
Severe: avg_pge=0.8278, expected range: -0.2754 0.3232
SHIP SURFACE PRESSURE (PA) LAQQ7 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8435, expected range: -1.0653 0.7500
SHIP SURFACE PRESSURE (PA) VRVN8 : out of range
Severe: avg_pge=0.8326, expected range: -1.1393 0.7500
SHIP SURFACE PRESSURE (PA) WHRN : out of range
Severe: avg_pge=0.8696, expected range: -1.2018 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) : out of range
Slight: obs_number=4479.0000, expected range: 3922.1255 4256.3610
buoy
DRIFTING BUOYS SURFACE PRESSURE (PA) 5201581 : out of range
Severe: rms_fgdepar=325.1187, expected range: 0.0000 114.5448
gbrad
All GROUND-BASED RADAR WIND VECTOR DIFF (M/S) Missing
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89734 : out of range
6 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8406, expected range: 0.5143 1.0106
BUFR LAND SYNOP 2M TEMPERATURE (K) 08026 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: rms_fgdepar=14.4284, expected range: 0.0000 5.6581
Severely_persistent: avg_est_pge=0.8026, expected range: -0.1327 0.4417
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 71971 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=7.0750, expected range: 0.0000 3.3350
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) : out of range
1 times in the last 10 days for at least one item
Severe: obs_number=381.0000, expected range: 576.8298 674.6439
METAR 2M TEMPERATURE (K) KHFD : out of range
Severe: rms_fgdepar=7.9919, expected range: 0.7754 4.6505
METAR 2M TEMPERATURE (K) KHRT : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=10.9606, expected range: 0.0674 4.3485
METAR 2M TEMPERATURE (K) LIMV : out of range
Severe: rms_fgdepar=8.9579, expected range: 0.0000 4.8394
METAR 2M TEMPERATURE (K) KALW : out of range
Severe: rms_fgdepar=8.2485, expected range: 0.0000 4.4877
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=0.8135, expected range: -0.5738 1.1357
rh2m
METAR RH2M (%) LEAO : out of range
Severe: rms_fgdepar=32.3795, expected range: 0.0000 17.7865