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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2019-04-14 12:00

airs
AQUA AIRS 108 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.01 0.06
AQUA AIRS 129 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: 0.03 0.08
atms
NOAA-20 ATMS radiances 16 : OutOfRange
Slightly: count(*)=8920, expected range: 9000.00 11200.00
cris
All NPP CrIS radiances Missing
NOAA-20 CrIS 912 radiances : OutOfRange
19 times in the last 10 days for at least one item
Severely: count(*)=12086, expected range: 74.00 6348.00
NOAA-20 CrIS 61 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: 0.31 0.34
NOAA-20 CrIS 73 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: 0.16 0.19
gpsro
All TANDEM-X rising RO bending angles Missing
All COSMIC-1 setting RO bending angles Missing
All COSMIC-1 rising RO bending angles Missing
All TERRA-SAR-X setting RO bending angles Missing
mhs
METOP-C MHS 5 allsky radiances : OutOfRange
Considerably: avg(norm_fg_depar)=0, expected range: -0.03 0.02
amdar
EU0530 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.93
AU0305 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.56
KYAYCIBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -0.60 0.65
Severely: rms(fg_depar)=3, expected range: 0.00 1.28
SQ2XLIBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.50
BRLHQVBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.61 0.71
Severely: rms(fg_depar)=2, expected range: 0.00 1.34
JPYENXBA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.25
3LJLP3JA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.72 0.72
KTXUOGJA 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 1.72
ID3ENXJA 146 Temperature (k) 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=3, expected range: 0.00 1.74
QUHHL5RA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.03 1.18
D5I0JFRA 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 1.51
BLNHQVRA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.61 0.72
Severely: rms(fg_depar)=2, expected range: 0.05 1.30
II1IEQZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.46
NXFGUUBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
In-Situ measurements
All SYNOP RH2m (%s) WMO BLOCK 32 70000 101325 Missing
All Drifter Buoy Surface pressure (Pa) 00 0 0 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 61 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 01 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 02 0 40000 Missing
TEMP Land Report Temperature (k) WMO BLOCK 12 40000 70000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=299, expected range: 350.00 400.00
TEMP Land Report Q (g/kg) WMO BLOCK 12 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=315, expected range: 380.00 410.00
TEMP Land Report Temperature (k) WMO BLOCK 12 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: count(*)=302, expected range: 330.00 420.00
TEMP Land Report Wind Vector difference (m/s) WMO BLOCK 45 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Considerably: avg(fg_depar)=9, expected range: 0.24 6.30
Considerably: rms(fg_depar)=10, expected range: 0.43 7.20
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
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
6401566 189 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
metar
K24A METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=176, expected range: 0.00 112.00
HEMA METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=274, expected range: 0.00 151.00
UWOO METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=184, expected range: 0.00 119.00
SBSY METAR Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=90, expected range: 0.00 75.00
pilot
82099 PILOT Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: 1.48 7.20
Severely: rms(fg_depar)=12, expected range: 1.48 8.40
ship
VRNS2 SHIP Report Wind Vector difference (m/s) : OutOfRange
4 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=69, expected range: 0.00 50.00
WDC7379 SHIP Report Wind Vector difference (m/s) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=72, expected range: 0.00 50.00
9V9404 SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=96, expected range: 0.00 50.00
9HA3062 SHIP Report Surface pressure (Pa) : OutOfRange
Severely_persistent: freq(qc_pge)=95, expected range: 0.00 50.00
9V9399 SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=83, expected range: 0.00 50.00
9V3867 SHIP Report Wind Vector difference (m/s) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
synop
67217 SYNOP Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=86, expected range: 0.00 50.00
85968 Land Automatic Report 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
17380 SYNOP Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
Radiosondes
82099 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: 1.57 7.10
Severely: rms(fg_depar)=12, expected range: 1.50 8.30
72230 109 Q (g/kg) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
85799 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.15 0.51
Severely: rms(fg_depar)=2, expected range: 0.19 1.88
27707 109 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.00 1.19
16245 109 Q (g/kg) 40000 70000 : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 75.00