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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-08-15 12:00

amsua
NOAA-19/AMSUA RADIANCES CHANNEL 9 : out of range
3 times in the last 10 days for at least one item
Considerable: avg_biascorr=0.0362, expected range: 0.0606 0.1192
cris
NPP/CRIS RADIANCES (115 channels affected) : out of range
Severe: avg_biascorr=0.2531, expected range: 0.0755 0.2148
NPP/CRIS RADIANCES (145 channels affected) : out of range
Severe: obs_number=9334.0000, expected range: 4489.7698 6275.4324
NPP/CRIS RADIANCES (20 channels affected) : out of range
Severe: stdev_fgdepar=3.0974, expected range: 0.1915 0.2784
atms
NPP/ATMS RADIANCES (7 channels affected) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=3540.0000, expected range: 2874.1983 3397.1350
Geostationary CSR
GOES-15/IMAGER RADIANCES CHANNEL 2 : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=113566.0000, expected range: 20230.0722 33802.0945
GOES-15/IMAGER RADIANCES CHANNEL 3 : out of range
3 times in the last 10 days for at least one item
Severe: obs_number=36563.0000, expected range: 3556.9590 15740.7252
Severe: avg_fgdepar=-0.6314, expected range: -0.1948 0.2989
Radiosondes
LAND TEMP TEMPERATURE (K) 20046 PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=14.4607, expected range: 0.2123 1.8763
Severe: avg_pge=0.8739, expected range: -0.1808 0.2637
LAND TEMP TEMPERATURE (K) 17030 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=6.2958, expected range: 0.0000 1.5478
LAND TEMP TEMPERATURE (K) 29862 PRESSURE LAYER 600-900 (HPA) : out of range
Severe: rms_fgdepar=7.3660, expected range: 0.0000 2.3216
LAND TEMP TEMPERATURE (K) 78073 PRESSURE LAYER 900-1200 (HPA) : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=8.8501, expected range: 0.0000 2.3509
LAND TEMP Q (G/KG) 42874 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=8.0636, expected range: 0.0000 2.6598
LAND TEMP TEMPERATURE (K) PRESSURE LAYER 600-900 (HPA) : out of range
Considerable: rms_fgdepar=3.3657, expected range: 0.0731 2.0828
HIGH RESO LAND TEMP TEMPERATURE (K) (4 pressure layers affected) : out of range
1 times in the last 10 days for at least one item
Considerable: obs_number=119.0000, expected range: 183.6940 334.6590
amdar
AMDAR WIND VECTOR DIFF (M/S) AU0130 PRESSURE LAYER 900-1200 (HPA) : out of range
Severe: rms_fgdepar=16.7902, expected range: 0.0000 6.7020
WIGOS AMDAR WIND VECTOR DIFF (M/S) BIVEIRBA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=16.8776, expected range: 0.0000 7.8871
WIGOS AMDAR WIND VECTOR DIFF (M/S) 03VIR4RA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=17.0578, expected range: 0.0000 7.7736
WIGOS AMDAR WIND VECTOR DIFF (M/S) 4WWUILZA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: rms_fgdepar=19.7865, expected range: 0.0000 6.1567
WIGOS AMDAR TEMPERATURE (K) PMGEIRJA (2 pressure layers affected) : out of range
Severe: rms_fgdepar=7.0349, expected range: 0.0000 1.2999
WIGOS AMDAR TEMPERATURE (K) PMGEIRJA PRESSURE LAYER 0-300 (HPA) : out of range
Severe: avg_pge=0.8405, expected range: -0.0555 0.0680
synop
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) : out of range
7 times in the last 10 days for at least one item
Severely_persistent: obs_number=19.0000, expected range: 54.4464 93.3183
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42711 : out of range
12 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8702, expected range: -1.4713 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42523 : out of range
7 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9038, expected range: -0.8227 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 37308 : out of range
1 times in the last 10 days for at least one item
Severe: rms_fgdepar=357.4769, expected range: 2.6038 295.4355
Severe: avg_pge=0.8817, expected range: -0.2231 0.7500
AUTOMATIC LAND SYNOP SURFACE PRESSURE (PA) 47639 : out of range
2 times in the last 10 days for at least one item
Severe: rms_fgdepar=464.7000, expected range: 2.3564 91.2660
Severe: avg_pge=0.8409, expected range: -0.6208 0.7209
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 60531 : out of range
Severe: rms_fgdepar=322.6346, expected range: 0.0000 143.9586
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 42714 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8441, expected range: -1.0084 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 54715 : out of range
Severe: rms_fgdepar=358.2375, expected range: 0.0000 141.7817
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 82596 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8275, expected range: -1.3915 0.7500
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 65457 : out of range
Severe: rms_fgdepar=609.0866, expected range: 0.0000 213.0415
MANUAL LAND SYNOP SURFACE PRESSURE (PA) 54618 : out of range
Severe: rms_fgdepar=341.1799, expected range: 0.0000 158.4822
MANUAL LAND SYNOP RH2M (%) 76040 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9995, expected range: -1.2396 0.7500
MANUAL LAND SYNOP RH2M (%) 66140 : out of range
Severe: avg_pge=0.8737, expected range: -0.5689 0.7500
MANUAL LAND SYNOP RH2M (%) 35671 : out of range
Severe: rms_fgdepar=43.3247, expected range: 0.0000 11.5317
MANUAL LAND SYNOP RH2M (%) 81002 : out of range
Severe: rms_fgdepar=36.5720, expected range: 0.0000 32.9875
Severe: avg_pge=0.8669, expected range: -0.0481 0.0705
MANUAL LAND SYNOP RH2M (%) 41936 : out of range
Severe: rms_fgdepar=43.6135, expected range: 0.0000 33.1387
Severe: avg_pge=0.9941, expected range: -0.0177 0.0286
MANUAL LAND SYNOP RH2M (%) 51777 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9997, expected range: -1.5365 0.7500
BUFR LAND SYNOP SURFACE PRESSURE (PA) 61461 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.8522, expected range: -1.5004 0.7500
BUFR LAND SYNOP RH2M (%) 48080 : out of range
Severe: rms_fgdepar=56.8824, expected range: 0.0000 18.4784
Severe: avg_pge=1.0000, expected range: -0.0098 0.0168
BUFR LAND SYNOP RH2M (%) 81737 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9996, expected range: -0.4120 0.7500
ship
SHIP SURFACE PRESSURE (PA) BQHZ : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.9394, expected range: -0.9541 0.7500
BUFR SHIP SYNOP WIND VECTOR DIFF (M/S) LF4J : out of range
11 times in the last 10 days for at least one item
Severely_persistent: avg_pge=0.8932, expected range: 0.0786 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) SPREP : out of range
Severe: rms_fgdepar=455.7525, expected range: 0.0000 210.6509
AUTOMATIC SHIP WIND VECTOR DIFF (M/S) 62140 : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=16.3308, expected range: 0.0000 11.5786
Severe: avg_pge=0.8607, expected range: -0.9808 0.7500
SHIP SURFACE PRESSURE (PA) ZCEI3 : out of range
Severe: rms_fgdepar=349.8940, expected range: 0.0000 306.7132
Severe: avg_pge=0.8413, expected range: -0.9118 0.7500
SHIP SURFACE PRESSURE (PA) ZCDS3 : out of range
Severe: avg_pge=0.8639, expected range: -1.2284 0.7500
SHIP SURFACE PRESSURE (PA) VRRA4 : out of range
Severe: avg_pge=0.8807, expected range: -0.6001 0.7500
SHIP SURFACE PRESSURE (PA) D5LA6 : out of range
Severe: rms_fgdepar=689.5551, expected range: 0.0000 297.9899
SHIP SURFACE PRESSURE (PA) V7OE6 : out of range
Severe: rms_fgdepar=635.7567, expected range: 0.0000 227.6092
Severe: avg_pge=0.9000, expected range: -0.7445 0.7500
SHIP SURFACE PRESSURE (PA) 3ETA7 : out of range
2 times in the last 10 days for at least one item
Severe: avg_pge=0.8274, expected range: -0.7320 0.7500
SHIP SURFACE PRESSURE (PA) C6BC9 : out of range
Severe: rms_fgdepar=362.2829, expected range: 0.0000 253.6760
Severe: avg_pge=0.8123, expected range: -0.5885 0.7500
SHIP WIND VECTOR DIFF (M/S) ZCBU3 : out of range
1 times in the last 10 days for at least one item
Severe: avg_pge=0.9127, expected range: -0.8469 0.7500
AUTOMATIC SHIP SURFACE PRESSURE (PA) : out of range
4 times in the last 10 days for at least one item
Slight: obs_number=4477.0000, expected range: 3886.9457 4277.8190
buoy
MOORED BUOYS SURFACE PRESSURE (PA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: obs_number=82.0000, expected range: 111.8787 130.5658
DRIFTING BUOYS SURFACE PRESSURE (PA) : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_biascorr=6.4000, expected range: 0.0000 0.0000
metar
METAR SURFACE PRESSURE (PA) EGYE : out of range
Severe: rms_fgdepar=303.6714, expected range: 0.0000 122.2790
METAR SURFACE PRESSURE (PA) FQVL : out of range
Severe: rms_fgdepar=367.9223, expected range: 0.0000 167.8742
METAR SURFACE PRESSURE (PA) FXMM : out of range
Severe: rms_fgdepar=950.0947, expected range: 0.0000 376.6615
METAR SURFACE PRESSURE (PA) LIRT : out of range
4 times in the last 10 days for at least one item
Severe: rms_fgdepar=552.2376, expected range: 0.0000 147.9416
gbrad
GROUND-BASED RADAR WIND VECTOR DIFF (M/S) : out of range
8 times in the last 10 days for at least one item
Slight: obs_number=1114.0000, expected range: 1432.7100 3493.9096
t2m
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
9 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8748, expected range: 0.6996 0.9008
LAND TEMP 2M TEMPERATURE (K) 56029 : out of range
5 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8091, expected range: -0.0104 1.2406
BUFR LAND SYNOP 2M TEMPERATURE (K) 89577 : out of range
10 times in the last 10 days for at least one item
Severely_persistent: avg_est_pge=0.8738, expected range: 0.7053 0.8987
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89625 : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8298, expected range: -0.4409 1.2723
AUTOMATIC LAND SYNOP 2M TEMPERATURE (K) 89828 : out of range
1 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8014, expected range: -0.2985 1.1561
MANUAL LAND SYNOP 2M TEMPERATURE (K) 61036 : out of range
Severe: rms_fgdepar=8.3234, expected range: 0.0000 4.3864
METAR 2M TEMPERATURE (K) UGMS : out of range
2 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8091, expected range: 0.3904 1.0040
LAND TEMP 2M TEMPERATURE (K) 72376 : out of range
3 times in the last 10 days for at least one item
Severe: avg_est_pge=0.8601, expected range: -0.4739 1.3399
BUFR LAND SYNOP 2M TEMPERATURE (K) 94328 : out of range
Severe: rms_fgdepar=7.2422, expected range: 1.4936 4.3743