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 Alerts are provided for information on an as-is basis and may be withdrawn or changed without notice.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 2018-02-04 00:00

airs
AQUA AIRS 83 radiances : OutOfRange
Slightly: avg(fg_depar)=0, expected range: -0.09 0.04
89 AQUA AIRS 1 radiances have reduced counts (see example): OutOfRange
Slightly: count(*)=14109, expected range: 15700.00 23000.00
gpsro
All COSMIC-6 rising RO bending angles Missing
iasi
66 METOP-A IASI 16 radiances have reduced counts (see example): OutOfRange
Considerably: count(*)=14694, expected range: 15200.00 17100.00
amdar
DIJX1DJA 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)=25, expected range: -7.20 13.90
Severely: rms(fg_depar)=27, expected range: 0.00 14.60
Considerably: freq(qc_pge)=86, expected range: 0.00 70.00
SL0100 146 Temperature (k) 0 40000 : OutOfRange
1 times in the last 10 days for at least one item
Severely: rms(fg_depar)=2, expected range: 0.00 1.43
SL0091 146 Temperature (k) 0 40000 : OutOfRange
Severely: avg(fg_depar)=2, expected range: -1.07 1.03
Severely: rms(fg_depar)=3, expected range: 0.00 1.13
SL0091 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=1, expected range: 0.23 1.22
SL0123 146 Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=2, expected range: 0.08 1.27
EU4510 146 Temperature (k) 70000 101325 : OutOfRange
Severely: rms(fg_depar)=5, expected range: 0.00 3.10
YUOUNVJA 146 Temperature (k) 70000 101325 : OutOfRange
Severely: avg(fg_depar)=-3, expected range: -1.56 1.34
Severely: rms(fg_depar)=3, expected range: 0.00 1.96
P2YYMEJA 146 Wind Vector difference (m/s) 0 40000 : OutOfRange
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
In-Situ measurements
All European Wind Profiler Wind Vector difference (m/s) WMO BLOCK 11 0 400 Missing
All PILOT Wind Vector difference (m/s) WMO BLOCK 68 0 40000 Missing
All TEMP Land Report Temperature (k) WMO BLOCK 65 70000 101325 Missing
Land Automatic Report Surface pressure (Pa) WMO BLOCK 11 0 0 : OutOfRange
4 times in the last 10 days for at least one item
Slightly: count(*)=153, expected range: -72.00 142.00
PILOT Wind Vector difference (m/s) WMO BLOCK 74 0 40000 : OutOfRange
Slightly: rms(fg_depar)=7, expected range: 2.00 7.00
BUOYS
1700653 189 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=132, expected range: 0.00 71.00
1501512 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
3401538 189 Surface pressure (Pa) : OutOfRange
6 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
metar
KQRH METAR Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=110, expected range: 0.74 50.00
PADM METAR Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
ship
D5DS3 SHIP Report Wind Vector difference (m/s) : OutOfRange
1 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=61, expected range: 0.00 50.00
C6BR3 SHIP Report Surface pressure (Pa) : OutOfRange
Severely_persistent: freq(qc_pge)=85, expected range: 0.00 50.00
ZDNC6 SHIP Report Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=100, expected range: 0.00 50.00
SDIA Automatic SHIP Report Surface pressure (Pa) : OutOfRange
12 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=69, expected range: 0.00 50.00
VTXF SHIP Report Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=91, expected range: 0.00 50.00
SBPR Automatic SHIP Report Surface pressure (Pa) : OutOfRange
7 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=91, expected range: 0.00 50.00
BATFR11 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=71, expected range: 0.00 70.00
V7UU4 SHIP Report Wind Vector difference (m/s) : OutOfRange
Considerably: freq(qc_pge)=81, expected range: 0.00 70.00
42365 Automatic SHIP Report Wind Vector difference (m/s) : OutOfRange
6 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=80, expected range: 0.00 70.00
SBPT Automatic SHIP Report Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
synop
17371 170 Surface pressure (Pa) : OutOfRange
15 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=72, expected range: 0.00 50.00
04126 170 Surface pressure (Pa) : OutOfRange
8 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=55, expected range: 0.00 50.00
08486 170 Surface pressure (Pa) : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=53, expected range: 0.00 50.00
71649 170 Surface pressure (Pa) : OutOfRange
9 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=58, expected range: 0.00 50.00
01389 170 Surface pressure (Pa) : OutOfRange
Severely: rms(fg_depar)=197, expected range: 0.00 125.00
93800 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
21721 170 Surface pressure (Pa) : OutOfRange
Considerably: freq(qc_pge)=100, expected range: 0.00 70.00
36104 SYNOP 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 70.00
04814 170 Surface pressure (Pa) : OutOfRange
1 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=87, expected range: 0.00 70.00
17046 SYNOP Surface pressure (Pa) : OutOfRange
2 times in the last 10 days for at least one item
Considerably: freq(qc_pge)=75, expected range: 0.00 70.00
Radiosondes
SOCR3 TEMP SHIP Report U10m (m/s) 70000 101325 : OutOfRange
10 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=85, expected range: 0.00 50.00
SOCRATES 111 U10m (m/s) 70000 101325 : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=86, expected range: 0.00 50.00
SOCRATES 111 V10m (m/s) 70000 101325 : OutOfRange
5 times in the last 10 days for at least one item
Severely_persistent: freq(qc_pge)=86, expected range: 0.00 50.00
89532 TEMP Land Report Wind Vector difference (m/s) 0 40000 : OutOfRange
Severely: avg(fg_depar)=5, expected range: 0.76 3.60
76225 TEMP Land Report Temperature (k) 40000 70000 : OutOfRange
Severely: rms(fg_depar)=3, expected range: 0.00 1.81