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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-04-18 12:00

airs
AQUA AIRS 1995 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.14 0.12
cris
NPP CrIS 101 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.10 0.13
Geostationary CSR
METEOSAT-11 SEVIRI 8 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.12 0.07
gpsro
All COSMIC-6 rising RO bending angles Missing
ssmis
DMSP-18 SSMIS 5 allsky radiances : OutOfRange
7 times in the last 10 days for at least one item
Slightly: avg(biascorr)=2, expected range: 2.50 3.00
amdar
EU2802 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: 0.05 5.40
Severely: rms(fg_depar)=9, expected range: 0.05 6.10
1X4GUWJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: 0.75 5.90
0YYWUWJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=10, expected range: 1.18 7.40
TN5GUUZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=10, expected range: -0.39 6.00
Severely: rms(fg_depar)=11, expected range: 0.00 7.00
IAEWUUJA 146 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=1, expected range: -0.57 0.63
MTQUIRZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.57
JGRYFABA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.35
1CAUOGBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.31
1O3YEPBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.52
NGDEOGJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.27
IGHIEJJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.05 1.29
ADC0GDRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -1.02 0.72
R2U0JGZA 146 Temperature (k) 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=2, expected range: 0.00 1.49
S0YIQXZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.26
R2M0JGJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.73
NGDEOGJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -1.07 0.83
TPMKJGRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.79
ZLK1T1ZA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.70 0.50
amsua
NOAA-15 AMSU-A 9 radiances : OutOfRange
14 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: 0.07 0.17
Atmospheric Motion Vector
All AQUA cloudy WV 0 40000 Missing
In-Situ measurements
SYNOP Surface pressure (Pa) WMO BLOCK 73 0 0 : OutOfRange
3 times in the last 10 days for at least one item
Severely: count(*)=28, expected range: 31.00 33.00
All SYNOP RH2m (%s) WMO BLOCK 32 70000 101325 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 61 0 40000 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 70 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 02 0 40000 Missing
All TEMP SHIP Report Temperature (k) North Atlantic 0 40000 Missing
All TEMP SHIP Report Temperature (k) North Atlantic 40000 70000 Missing
All TEMP SHIP Report Temperature (k) North Atlantic 70000 101325 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 63 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 Missing
TEMP Land Report Q (g/kg) WMO BLOCK 53 0 40000 : OutOfRange
Slightly: count(*)=29, expected range: -1.04 28.00
BUOYS
1601522 189 Surface pressure (Pa) : OutOfRange
19 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=98, expected range: 0.00 50.00
5401633 189 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=64, expected range: 0.00 50.00
14932 Drifter Buoy Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=185, expected range: 0.00 119.00
3301523 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=130, expected range: 0.00 72.00
1400929 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=251, expected range: 0.00 96.00
5601571 189 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
3301604 189 Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
3101547 189 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=84, expected range: 0.00 75.00
metar
KM19 METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=284, expected range: 0.00 177.00
K4M9 METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=235, expected range: 0.00 155.00
KHKA METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=279, expected range: 0.00 183.00
KNQA METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=255, expected range: 0.00 158.00
SAOC METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=281, expected range: 0.00 182.00
KSRC METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=285, expected range: 0.00 187.00
KPBF METAR Surface pressure (Pa) : OutOfRange
Severely: avg(fg_depar)=255, expected range: -95.00 137.00
Severely: rms(fg_depar)=297, expected range: 0.00 175.00
DAAG METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=218, expected range: 0.00 130.00
ZBHH METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=262, expected range: 0.00 164.00
KMEM METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=274, expected range: 0.00 175.00
KLLQ METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=299, expected range: 0.00 187.00
KJBR METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=286, expected range: 0.00 183.00
ship
V7AE7 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)=62, expected range: 0.00 50.00
WDC7379 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)=87, expected range: 0.00 50.00
VRRD7 SHIP Report Surface pressure (Pa) : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=74, expected range: 0.00 50.00
9V9404 SHIP Report Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=97, expected range: 0.00 50.00
WGAE SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=62, expected range: 0.00 50.00
42035 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
Severely: rms(fg_depar)=10, expected range: 0.00 7.10
EUCFR06 SHIP Report Wind Vector difference (m/s) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
EUCFR06 182 Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00
synop
38886 SYNOP Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
60018 170 Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=90, expected range: 0.00 75.00
71648 170 Surface pressure (Pa) : OutOfRange
9 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00