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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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

Early delivery 4D-VAR at 2019-01-16 12:00

cris
NOAA-20 CrIS 981 radiances : OutOfRange
16 times in the last 10 days for at least one item
Considerably: count(*)=6794, expected range: 2.00 5203.00
NPP CrIS 21 radiances : OutOfRange
13 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.06 0.18
Geostationary CSR
Himawari-8 AHI 2 radiances : OutOfRange
Slightly: stdev(fg_depar)=1, expected range: 0.80 1.26
Himawari-8 AHI 3 radiances : OutOfRange
Slightly: stdev(fg_depar)=1, expected range: 0.77 1.23
gpsro
All COSMIC-1 setting RO bending angles Missing
All COSMIC-1 rising RO bending angles Missing
All COSMIC-6 rising RO bending angles Missing
iasi
METOP-A IASI 6982 radiances : OutOfRange
Severely: stdev(fg_depar)=1, expected range: 0.68 1.03
Slightly: avg(biascorr)=0, expected range: -0.63 -0.42
METOP-A IASI 6993 radiances : OutOfRange
Severely: stdev(fg_depar)=0, expected range: 0.45 0.77
METOP-A IASI 7001 radiances : OutOfRange
Severely: stdev(fg_depar)=0, expected range: 0.46 0.67
393 METOP-A IASI 16 radiances have reduced counts (see example): OutOfRange
Severely: count(*)=6847, expected range: 9000.00 11800.00
METOP-A IASI 6978 radiances : OutOfRange
Considerably: stdev(fg_depar)=1, expected range: 0.90 1.46
Considerably: avg(biascorr)=0, expected range: -0.37 -0.22
METOP-A IASI 6980 radiances : OutOfRange
Considerably: stdev(fg_depar)=1, expected range: 0.74 1.20
Considerably: avg(biascorr)=0, expected range: -0.39 -0.22
METOP-A IASI 6989 radiances : OutOfRange
Considerably: stdev(fg_depar)=0, expected range: 0.50 0.83
METOP-A IASI 6991 radiances : OutOfRange
Considerably: stdev(fg_depar)=0, expected range: 0.46 0.81
METOP-A IASI 6997 radiances : OutOfRange
Considerably: stdev(fg_depar)=0, expected range: 0.46 0.70
METOP-A IASI 7389 radiances : OutOfRange
Considerably: avg(biascorr)=0, expected range: -0.10 -0.01
Slightly: stdev(fg_depar)=0, expected range: 0.44 0.72
METOP-A IASI 7424 radiances : OutOfRange
Considerably: avg(biascorr)=0, expected range: -0.13 -0.02
Slightly: stdev(fg_depar)=0, expected range: 0.44 0.75
METOP-A IASI 7426 radiances : OutOfRange
Considerably: avg(biascorr)=0, expected range: -0.11 -0.03
METOP-A IASI 7428 radiances : OutOfRange
Considerably: avg(biascorr)=0, expected range: -0.11 -0.03
Slightly: stdev(fg_depar)=0, expected range: 0.45 0.75
METOP-A IASI 72 radiances : OutOfRange
6 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.45 -0.20
METOP-A IASI 6985 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.62 0.92
Slightly: avg(biascorr)=-1, expected range: -1.13 -0.95
METOP-A IASI 6987 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.53 0.92
METOP-A IASI 7267 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.41 0.67
Slightly: avg(biascorr)=0, expected range: -0.09 -0.02
METOP-A IASI 7269 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.08 -0.00
METOP-A IASI 7885 radiances : OutOfRange
Slightly: stdev(fg_depar)=1, expected range: 0.61 1.00
Slightly: avg(biascorr)=0, expected range: -0.24 -0.10
METOP-A IASI 8007 radiances : OutOfRange
Slightly: stdev(fg_depar)=1, expected range: 0.72 1.13
Slightly: avg(biascorr)=0, expected range: -0.28 -0.12
mhs
METOP-A MHS 2 allsky radiances : OutOfRange
Slightly: count(*)=7298, expected range: 7500.00 14900.00
ssmis
All DMSP-17 SSMIS allsky radiances Missing
amdar
AFZA45 AMDAR Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=2, expected range: 0.00 1.56
5UCZN5ZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
EU0173 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.66
FHCYFEBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.87
PDBEOGJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.87
1AQFHZJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.70
BUEKGBZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.30
1QMYCYRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=77, expected range: 0.00 75.00
5IWCO3ZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
Atmospheric Motion Vector
METOP-A IR 40000 70000 : OutOfRange
Considerably: count(*)=286, expected range: 590.00 1580.00
METEOSAT-11 IR3 70000 110000 : OutOfRange
Slightly: count(*)=1503, expected range: 380.00 1420.00
In-Situ measurements
Land Automatic Report Surface pressure (Pa) WMO BLOCK 96 0 0 : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=6, expected range: 0.31 4.10
All Land Automatic Report Surface pressure (Pa) WMO BLOCK 72 0 0 Missing
All SYNOP RH2m (%s) WMO BLOCK 23 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 36 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 44 70000 101325 Missing
All SYNOP RH2m (%s) WMO BLOCK 51 70000 101325 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 71 0 40000 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 87 0 40000 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 91 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 08 0 40000 Missing
All TEMP SHIP Report Temperature (k) North America 0 40000 Missing
All TEMP SHIP Report Temperature (k) North America 40000 70000 Missing
All TEMP SHIP Report Temperature (k) North America 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 38 40000 70000 Missing
SYNOP Z (m) WMO BLOCK 15 70000 101325 : OutOfRange
5 times in the last 10 days for at least one item
Considerably: count(*)=11, expected range: 3.50 8.90
Land Automatic Report Surface pressure (Pa) WMO BLOCK 12 0 0 : OutOfRange
4 times in the last 10 days for at least one item
Slightly: count(*)=4, expected range: 12.60 220.00
BUOYS
7401505 189 Surface pressure (Pa) : OutOfRange
17 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=68, expected range: 0.00 50.00
ship
D5TB2 SHIP Report Wind Vector difference (m/s) : OutOfRange
7 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=73, expected range: 0.00 50.00
WDC6698 SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
VAAZ Automatic SHIP Report Surface pressure (Pa) : OutOfRange
13 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
46036 Automatic SHIP Report Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
synop
37801 SYNOP Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=56, expected range: 0.00 50.00
08201 170 Surface pressure (Pa) : OutOfRange
19 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=65, expected range: 0.00 50.00
11325 170 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
Radiosondes
96749 TEMP Land Report Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.52
47102 109 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=5, expected range: -0.92 1.53
Severely: rms(fg_depar)=5, expected range: 0.00 1.99
91408 TEMP Land Report Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-4, expected range: -1.64 1.74
Severely: rms(fg_depar)=4, expected range: 0.00 1.97