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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-05-21 12:00

airs
AQUA AIRS 2099 radiances : OutOfRange
11 times in the last 10 days for at least one item
Severely: stdev(fg_depar)=1, expected range: 0.66 1.01
AQUA AIRS 2100 radiances : OutOfRange
14 times in the last 10 days for at least one item
Severely: stdev(fg_depar)=1, expected range: 0.77 1.01
AQUA AIRS 2101 radiances : OutOfRange
14 times in the last 10 days for at least one item
Severely: stdev(fg_depar)=1, expected range: 0.66 0.81
AQUA AIRS 2103 radiances : OutOfRange
15 times in the last 10 days for at least one item
Severely: stdev(fg_depar)=0, expected range: 0.37 0.65
AQUA AIRS 1574 radiances : OutOfRange
12 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.14 0.21
AQUA AIRS 1947 radiances : OutOfRange
7 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=0, expected range: 0.36 0.49
AQUA AIRS 1948 radiances : OutOfRange
5 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=0, expected range: 0.39 0.54
AQUA AIRS 1958 radiances : OutOfRange
6 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=0, expected range: 0.50 0.80
AQUA AIRS 2098 radiances : OutOfRange
6 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=0, expected range: 0.49 0.89
AQUA AIRS 2101 radiances : OutOfRange
8 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.41 0.56
AQUA AIRS 2106 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=0, expected range: 0.29 0.38
gpsro
All COSMIC-6 rising RO bending angles Missing
iasi
METOP-B IASI 6458 radiances : OutOfRange
15 times in the last 10 days for at least one item
Severely: stdev(fg_depar)=4, expected range: 3.40 3.77
METOP-A IASI 6458 radiances : OutOfRange
15 times in the last 10 days for at least one item
Severely: stdev(fg_depar)=4, expected range: 3.40 3.82
METOP-A IASI 6463 radiances : OutOfRange
13 times in the last 10 days for at least one item
Severely: stdev(fg_depar)=3, expected range: 2.60 2.92
METOP-B IASI 6463 radiances : OutOfRange
14 times in the last 10 days for at least one item
Considerably: stdev(fg_depar)=3, expected range: 1.70 2.86
METOP-B IASI 6962 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=4, expected range: 3.50 4.18
METOP-A IASI 6463 radiances : OutOfRange
Slightly: avg(biascorr)=-1, expected range: -2.10 -1.78
METOP-A IASI 3252 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=15795, expected range: 13100.00 15776.00
METOP-A IASI 3256 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=15545, expected range: 12800.00 15525.00
METOP-A IASI 3312 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=15496, expected range: 12800.00 15469.00
METOP-A IASI 3440 radiances : OutOfRange
2 times in the last 10 days for at least one item
Slightly: count(*)=15327, expected range: 12600.00 15304.00
mhs
METOP-B MHS 1 allsky radiances : OutOfRange
5 times in the last 10 days for at least one item
Considerably: stdev(norm_fg_depar)=0, expected range: 0.15 0.25
NOAA-19 MHS 1 allsky radiances : OutOfRange
6 times in the last 10 days for at least one item
Slightly: stdev(norm_fg_depar)=0, expected range: 0.15 0.23
ssmis
DMSP-18 SSMIS 15 allsky radiances : OutOfRange
8 times in the last 10 days for at least one item
Slightly: avg(biascorr)=2, expected range: 1.97 2.75
amdar
MX0022 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: 0.77 5.60
Severely: rms(fg_depar)=10, expected range: 0.86 6.50
2QOYCMZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=13, expected range: 0.56 6.20
Severely: rms(fg_depar)=16, expected range: 0.00 10.40
Severely: avg(fg_depar)=12, expected range: -0.33 7.20
CL0UOHBA 146 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=1, expected range: -0.81 0.81
Severely: avg(fg_depar)=1, expected range: -0.65 0.66
0QJUISZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.23
Severely: rms(fg_depar)=2, expected range: 0.00 1.17
XMFEOFRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.51
Severely: avg(fg_depar)=-1, expected range: -0.46 0.58
Severely: rms(fg_depar)=2, expected range: 0.00 1.35
YS5XNSRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.29
3REUNVRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.63
Severely: rms(fg_depar)=2, expected range: 0.00 1.33
MX0031 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=7, expected range: 1.36 4.90
MX0031 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=8, expected range: 1.42 5.80
EU4215 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: -0.15 5.30
EU4215 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=9, expected range: 0.15 5.60
320VD5JA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.15 0.97
QZIYFXJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.22 1.03
Z5ZIOZRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.25
SQ3UIJZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.25
In-Situ measurements
All SYNOP Z (m) WMO BLOCK 67 70000 101325 Missing
All European Wind Profiler Wind Vector difference (m/s) 08 0 40000 Missing
All Drifter Buoy Surface pressure (Pa) WMO BLOCK 58 0 0 Missing
All Moored Buoy Surface pressure (Pa) WMO BLOCK 28 0 0 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 15 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 67 0 40000 Missing
TEMP Land Report Temperature (k) WMO BLOCK 23 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=2, expected range: 0.15 1.71
Considerably: rms(fg_depar)=2, expected range: 0.00 2.20
Moored Buoy Surface pressure (Pa) WMO BLOCK 13 0 0 : OutOfRange
Slightly: count(*)=24, expected range: 26.00 44.00
Moored Buoy Surface pressure (Pa) WMO BLOCK 15 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=12, expected range: 15.00 32.00
PILOT Wind Vector difference (m/s) WMO BLOCK 68 0 40000 : OutOfRange
Slightly: count(*)=11, expected range: -2.90 10.10
Moored Buoy Surface pressure (Pa) WMO BLOCK 14 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=18, expected range: 19.30 29.00
BUOYS
5601612 189 Surface pressure (Pa) : OutOfRange
9 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=79, expected range: 0.00 50.00
1400932 189 Surface pressure (Pa) : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=83, expected range: 0.00 50.00
5401623 189 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=66, expected range: 0.00 50.00
5500935 189 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=96, expected range: 0.00 50.00
1701555 189 Surface pressure (Pa) : OutOfRange
9 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=92, expected range: 0.00 50.00
1501517 189 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=98, expected range: 0.00 50.00
3101537 189 Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=59, expected range: 0.00 50.00
1701550 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=134, expected range: 0.00 84.00
Severely: rms(fg_depar)=113, expected range: 0.00 66.00
5401518 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=216, expected range: 0.00 135.00
5501558 189 Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
3101544 189 Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
4601665 189 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
metar
KTCS METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=204, expected range: 0.00 122.00
MMCV METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=256, expected range: 0.00 155.00
KT65 METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=212, expected range: 0.00 128.00
pilot
43311 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=19, expected range: 0.00 11.30
Severely: avg(fg_depar)=14, expected range: 0.59 7.40
Severely: rms(fg_depar)=18, expected range: 0.78 8.50
prof
01079 European Wind Profiler Wind Vector difference (m/s) 0 40000 : OutOfRange
3 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=95, expected range: 0.00 50.00
Severely_persistent: freq(qc_pge)=91, expected range: 0.00 50.00
ship
9V8208 SHIP Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
3FAD8 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
VTZJ Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
PDAN SHIP Report Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=85, expected range: 0.00 70.00
synop
08143 170 Surface pressure (Pa) : OutOfRange
7 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
02897 170 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=162, expected range: 0.00 106.00
94970 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Radiosondes
7JUNA4N 111 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=7, expected range: 1.73 5.20
Severely: rms(fg_depar)=8, expected range: 2.00 5.80
42339 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: 2.40 6.40
34731 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=2, expected range: -0.72 1.45
Severely: rms(fg_depar)=4, expected range: 0.26 2.40
Severely: avg(fg_depar)=2, expected range: -0.59 1.37
Severely: rms(fg_depar)=4, expected range: 0.12 2.60
17240 109 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.87
Severely: rms(fg_depar)=3, expected range: 0.00 1.74
72364 109 Q (g/kg) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
7JUNA4N 111 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.09 1.61