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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-02-13 00:00

airs
AQUA AIRS 55 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.92 -0.53
AQUA AIRS 56 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.59 -0.26
AQUA AIRS 78 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -1.09 -0.80
AQUA AIRS 79 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.81 -0.57
AQUA AIRS 84 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.41 -0.15
AQUA AIRS 86 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.10 0.12
AQUA AIRS 172 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.10 -0.01
AQUA AIRS 248 radiances : OutOfRange
4 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.26 -0.04
cris
NPP CrIS 111 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.15 -0.10
Geostationary CSR
METEOSAT-8 55 2 radiances : OutOfRange
5 times in the last 10 days for at least one item
Slightly: count(*)=38593, expected range: 15854.00 37529.00
Himawari-8 AHI 2 radiances : OutOfRange
Slightly: count(*)=19141, expected range: 24000.00 54000.00
Himawari-8 AHI 3 radiances : OutOfRange
Slightly: count(*)=18732, expected range: 22000.00 53000.00
Himawari-8 AHI 4 radiances : OutOfRange
Slightly: count(*)=18328, expected range: 21000.00 52000.00
amdar
YWRIB0BA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -1.15 0.51
Severely: rms(fg_depar)=3, expected range: 0.00 1.43
IPAIO3RA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.22
Atmospheric Motion Vector
Himawari-8 VIS1 70000 110000 : OutOfRange
Considerably: count(*)=13463, expected range: 17200.00 30000.00
Himawari-8 cloudy WV2 0 40000 : OutOfRange
Considerably: count(*)=9571, expected range: 12900.00 23000.00
In-Situ measurements
SYNOP Surface pressure (Pa) WMO BLOCK 98 0 0 : OutOfRange
Severely: count(*)=230, expected range: 152.00 195.00
TEMP Land Report Temperature (k) WMO BLOCK 36 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=5, expected range: 0.00 3.10
Slightly: avg(fg_depar)=-1, expected range: -1.44 1.47
TEMP Land Report Temperature (k) WMO BLOCK 43 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.56
Considerably: avg(fg_depar)=-1, expected range: -0.67 0.85
All Japanese Wind Profiler Wind Vector difference (m/s) WMO BLOCK 47 0 400 Missing
All European Wind Profiler Wind Vector difference (m/s) WMO BLOCK 11 0 400 Missing
All Drifter Buoy Surface pressure (Pa) WMO BLOCK 42 0 0 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 Missing
SYNOP Surface pressure (Pa) WMO BLOCK 41 0 0 : OutOfRange
Slightly: rms(fg_depar)=148, expected range: 31.00 130.00
SYNOP Surface pressure (Pa) WMO BLOCK 42 0 0 : OutOfRange
Slightly: rms(fg_depar)=167, expected range: 47.00 165.00
SYNOP Surface pressure (Pa) WMO BLOCK 43 0 0 : OutOfRange
Slightly: rms(fg_depar)=125, expected range: 43.00 125.00
SYNOP Surface pressure (Pa) WMO BLOCK 91 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: rms(fg_depar)=114, expected range: 18.50 109.00
BUOYS
6200082 Moored Buoy Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=180, expected range: 0.00 115.00
6200513 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=364, expected range: 0.00 194.00
1501607 189 Surface pressure (Pa) : OutOfRange
Severely: avg(fg_depar)=184, expected range: -55.00 76.00
Severely: rms(fg_depar)=185, expected range: 0.00 78.00
2101508 189 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 70.00
metar
OPRK METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=254, expected range: 0.00 162.00
CYYN METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=233, expected range: 0.00 151.00
PAHP METAR 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 70.00
pilot
42379 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=11, expected range: 0.36 7.70
ship
D5DS3 SHIP Report Wind Vector difference (m/s) : OutOfRange
13 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=93, expected range: 0.00 50.00
VRPY7 SHIP Report Surface pressure (Pa) : OutOfRange
16 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=81, expected range: 0.00 50.00
C6YA5 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
VOLG Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
XJAB Automatic SHIP Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=81, expected range: 0.00 70.00
synop
08271 170 Surface pressure (Pa) : OutOfRange
17 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=84, expected range: 0.00 50.00
04158 170 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=92, expected range: 0.00 50.00
03917 170 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=166, expected range: 0.00 110.00
89648 Land Automatic Report Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=287, expected range: 0.00 129.00
41600 SYNOP 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
71232 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 70.00
68674 Land Automatic Report Surface pressure (Pa) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
41725 SYNOP Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
Radiosondes
SOCR3 TEMP SHIP Report U10m (m/s) 70000 101325 : OutOfRange
13 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=79, expected range: 0.00 50.00
SOCRATES 111 U10m (m/s) 70000 101325 : OutOfRange
13 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=78, expected range: 0.00 50.00
SOCRATES 111 V10m (m/s) 70000 101325 : OutOfRange
13 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=78, expected range: 0.00 50.00
71917 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=10, expected range: 0.00 6.80
27038 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=11, expected range: 0.00 7.20
36003 TEMP Land Report Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=9, expected range: 0.00 3.00
91948 109 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.34 1.26
43185 TEMP Land Report Temperature (k) 40000 70000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
25123 TEMP Land Report Temperature (k) 70000 101325 : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00