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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-02-11 12:00

airs
AQUA AIRS 248 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.26 -0.04
cris
NPP CrIS 233 radiances : OutOfRange
1 times in the last 10 days for at least one item
Slightly: avg(biascorr)=0, expected range: -0.39 -0.34
Geostationary CSR
METEOSAT-8 55 2 radiances : OutOfRange
3 times in the last 10 days for at least one item
Slightly: count(*)=37726, expected range: 15854.00 37529.00
iasi
METOP-B IASI 5397 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: 0.17 0.30
METOP-A IASI 217 radiances : OutOfRange
Slightly: avg(biascorr)=0, expected range: -0.01 0.06
amdar
SG0GUUJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=19, expected range: 1.01 8.40
Severely: rms(fg_depar)=22, expected range: 1.33 8.80
2GPUOGBA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
SG0GUUJA 146 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=-7, expected range: -2.90 4.60
Severely: rms(fg_depar)=8, expected range: 0.00 4.40
Considerably: freq(qc_pge)=95, expected range: 0.00 70.00
VXZUOFRA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: avg(fg_depar)=0, expected range: -0.00 0.00
LODEOGZA 146 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
QYNKJGZA 146 Temperature (k) 40000 70000 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -1.02 0.97
Severely: rms(fg_depar)=4, expected range: 0.00 1.38
EU0162 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-2, expected range: -1.21 0.88
Severely: rms(fg_depar)=2, expected range: 0.00 1.40
1OKUIEBA 146 Temperature (k) 70000 101325 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=3, expected range: 0.00 1.53
WSHEOFBA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 2.00
SDP2UEBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
2SJCEXBA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=90, expected range: 0.00 70.00
MDJTXKRA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=96, expected range: 0.00 70.00
3RPZJ0ZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
0ZZKG5ZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=71, expected range: 0.00 70.00
XLOJMLZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
GOPE5MZA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=72, expected range: 0.00 70.00
ZRPSATZA 146 Temperature (k) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=85, expected range: 0.00 70.00
SG0GUUJA 146 Temperature (k) 40000 70000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
In-Situ measurements
Land Automatic Report Surface pressure (Pa) WMO BLOCK 45 0 0 : OutOfRange
3 times in the last 10 days for at least one item
Severely: count(*)=40, expected range: 49.00 55.00
All Japanese Wind Profiler Wind Vector difference (m/s) WMO BLOCK 47 0 400 Missing
All Drifter Buoy Surface pressure (Pa) WMO BLOCK 42 0 0 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 91 0 40000 Missing
TEMP Land Report Temperature (k) WMO BLOCK 91 70000 101325 : OutOfRange
Considerably: rms(fg_depar)=2, expected range: 0.33 1.80
SYNOP Surface pressure (Pa) WMO BLOCK 68 0 0 : OutOfRange
Slightly: rms(fg_depar)=149, expected range: 23.00 139.00
SYNOP Surface pressure (Pa) WMO BLOCK 98 0 0 : OutOfRange
Slightly: rms(fg_depar)=111, expected range: 35.00 101.00
TEMP Land Report Temperature (k) WMO BLOCK 70 0 40000 : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.45 0.73
TEMP Land Report Temperature (k) WMO BLOCK 74 40000 70000 : OutOfRange
Slightly: rms(fg_depar)=1, expected range: 0.00 1.37
BUOYS
3301537 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 70.00
metar
KE38 METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=215, expected range: 0.00 115.00
K5T9 METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=242, expected range: 0.00 102.00
KBEA METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=122, expected range: 0.00 65.00
KUVA METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=214, expected range: 0.00 124.00
MDPC METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=301, expected range: 0.00 106.00
TDPD METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=250, expected range: 0.98 79.00
KDLF METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=250, expected range: 0.00 127.00
KEBG METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=226, expected range: 0.00 146.00
EHAK METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=246, expected range: 0.00 150.00
DNMM METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=186, expected range: 0.00 112.00
EKHN METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=188, expected range: 0.00 109.00
KFTN METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=203, expected range: 0.00 92.00
OEYN METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=145, expected range: 0.00 86.00
KRBO METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=158, expected range: 0.00 92.00
KTFP METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=119, expected range: 0.00 65.00
KCRP METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=121, expected range: 0.00 64.00
KBKS METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=179, expected range: 0.00 88.00
MDST METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=258, expected range: 0.00 153.00
KCZT METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=190, expected range: 0.00 98.00
KHBV METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=164, expected range: 0.00 90.00
KAPY METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=253, expected range: 0.00 93.00
ENLA METAR Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=81, expected range: 0.00 70.00
EGRW METAR Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=87, expected range: 0.00 70.00
ship
D5DS3 SHIP Report Wind Vector difference (m/s) : OutOfRange
11 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=89, expected range: 0.00 50.00
VRPY7 SHIP Report Surface pressure (Pa) : OutOfRange
15 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=80, expected range: 0.00 50.00
AUYJ SHIP Report Surface pressure (Pa) : OutOfRange
Severely_persistent: freq(qc_pge)=65, expected range: 0.00 50.00
LF7A 182 Wind Vector difference (m/s) : OutOfRange
Severely: rms(fg_depar)=13, expected range: 0.00 8.00
Considerably: freq(qc_pge)=81, expected range: 0.00 70.00
LF6A 182 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=291, expected range: 0.00 161.00
42365 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
4 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
LF5C 182 Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
C6TH9 SHIP Report 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 70.00
synop
08271 170 Surface pressure (Pa) : OutOfRange
16 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=78, expected range: 0.00 50.00
10004 170 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=166, expected range: 0.00 88.00
06205 170 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=188, expected range: 0.00 94.00
91958 170 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=249, expected range: 0.00 129.00
68272 Land Automatic Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
37682 SYNOP Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
25206 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
71486 170 Surface pressure (Pa) : OutOfRange
3 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
04339 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
47639 Land Automatic Report Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
Radiosondes
SOCR3 TEMP SHIP Report U10m (m/s) 70000 101325 : OutOfRange
14 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=78, expected range: 0.00 50.00
SOCR3 TEMP SHIP Report V10m (m/s) 70000 101325 : OutOfRange
14 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 U10m (m/s) 70000 101325 : OutOfRange
14 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
14 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=78, expected range: 0.00 50.00
76644 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=8, expected range: 1.00 5.40
Severely: rms(fg_depar)=11, expected range: 1.24 6.10
17281 109 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
89564 109 Q (g/kg) 0 40000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
70219 109 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=-1, expected range: -0.59 0.84
17196 TEMP Land Report Q (g/kg) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
91958 109 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-4, expected range: -1.76 1.42
Severely: rms(fg_depar)=4, expected range: 0.00 2.30
91958 109 Q (g/kg) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=0, expected range: 0.00 0.00
5QPW8XG 111 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=3, expected range: -1.00 0.63
Severely: rms(fg_depar)=6, expected range: 0.00 1.87
32477 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=83, expected range: 0.00 70.00
72240 109 Q (g/kg) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00