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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-11-16 00:00

airs
AQUA AIRS 1988 radiances : OutOfRange
Slightly: stdev(fg_depar)=1, expected range: 0.49 1.06
AQUA AIRS 2084 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.15 0.81
AQUA AIRS 2085 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.20 0.90
cris
NPP CrIS 1197 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.36 0.66
NPP CrIS 1205 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.24 0.20
Slightly: stdev(fg_depar)=1, expected range: 0.27 0.88
NPP CrIS 1213 radiances : OutOfRange
Slightly: stdev(fg_depar)=0, expected range: 0.16 0.86
NPP CrIS 1221 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: stdev(fg_depar)=1, expected range: 0.17 0.87
Geostationary CSR
GOES-15 GOES-15 2 radiances : OutOfRange
2 times in the last 10 days for at least one item
Severely: count(*)=23009, expected range: 86000.00 150000.00
gpsro
All COSMIC-6 setting RO bending angles Missing
iasi
METOP-A IASI 559 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: 0.05 0.10
airep
ELY001 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: 0.28 5.10
Severely: rms(fg_depar)=11, expected range: 0.11 6.00
UPS232 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=11, expected range: 0.65 6.70
BOX392 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: 0.33 5.00
Severely: rms(fg_depar)=10, expected range: 0.00 6.10
UPS238 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=7, expected range: 1.09 5.30
ACA859 AIREP Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
amdar
AU0171 AMDAR Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=4, expected range: 0.00 2.40
ZPLLFSBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=11, expected range: 0.00 7.60
IVW1JARA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: rms(fg_depar)=7, expected range: 0.42 5.10
JYTGUUBA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.45
LWVMMDZA 146 Temperature (k) 0 40000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.00 1.48
HINEOFJA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.02 1.20
EU2808 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.35 1.47
EMDENVBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.30
DJMWUWRA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.10
In-Situ measurements
All SYNOP RH2m (%s) 04 70000 101325 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 87 0 40000 Missing
All European Wind Profiler Wind Vector difference (m/s) 08 0 40000 Missing
TEMP Land Report Temperature (k) 07 0 40000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.56 1.67
All TEMP Land Report Temperature (k) WMO BLOCK 63 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 63 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 67 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 67 40000 70000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 67 70000 101325 Missing
Moored Buoy Surface pressure (Pa) WMO BLOCK 13 0 0 : OutOfRange
1 times in the last 10 days for at least one item
Severely: count(*)=48, expected range: 29.00 41.00
SYNOP Z (m) WMO BLOCK 11 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=15, expected range: 24.00 66.00
TEMP Land Report Q (g/kg) WMO BLOCK 13 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Slightly: count(*)=13, expected range: 22.00 79.00
BUOYS
4601633 189 Surface pressure (Pa) : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=55, expected range: 0.00 50.00
4700546 189 Surface pressure (Pa) : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=75, expected range: 0.00 50.00
4401551 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=221, expected range: 0.00 131.00
4101742 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=253, expected range: 0.00 168.00
1701524 189 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely: avg(fg_depar)=-234, expected range: -68.00 143.00
Severely: rms(fg_depar)=238, expected range: 0.00 139.00
5401552 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
6401544 189 Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 75.00
metar
SAME METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=465, expected range: 0.00 270.00
PATL METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=224, expected range: 0.00 145.00
ship
LF3I 182 Wind Vector difference (m/s) : OutOfRange
13 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=63, expected range: 0.00 50.00
DSQL7 SHIP Report Wind Vector difference (m/s) : OutOfRange
17 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
41063 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
5 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
C6YA5 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=87, expected range: 0.00 75.00
synop
11208 170 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=173, expected range: 0.00 114.00
68269 Land Automatic Report 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
71872 170 Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
04382 170 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=91, expected range: 0.00 75.00
Radiosondes
42339 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=10, expected range: 2.40 6.40
Severely: rms(fg_depar)=12, expected range: 2.40 7.70
07761 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=15, expected range: -0.27 0.99
Severely: rms(fg_depar)=17, expected range: 0.11 2.20
Considerably: freq(qc_pge)=100, expected range: 0.00 75.00
91413 TEMP Land Report Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -0.92 1.15