The New Meteorological Observation Network in the Netherlands;
Status and Operational Experience
Wiel Wauben and Dennis Hart
Royal Netherlands Meteorological Institute (KNMI)
TECO 2002: HIM-project, reason, concept, automation
TECO 2005: Current status and experience
2
HIM-project
90’s First investigations, preparations
1999 EU tender procedure
Jan 2000 Contract with Almos Systems
2000 Requirements, Specifications and Design
2001/2002 Building, HMI prototyping, testingImplementation of the 2 largest stations by Almos
2002 Implementation other stations by KNMIparallel to old system
21 Nov 2002 Synoptic part operational
28 Jan 2003 Airports operational (data format ATC changed)
3
Dutch Surface Observation Network
21 automated stations (PTUWRQ Visibility, Weather, Cloud research tower Cabauw)
5 civil airports (regional 5RWY Schiphol) 2 Navy airbases ~70 Ministry of Waterworks and Transport met-hydro stations
(inland waters, coastal region, North Sea) Lightning detection system (Safir Vaisala) Precipitation radar (Gematronic) MetClock (Cloud info from METEOSAT)
Many changes to sensor configuration and some stations 9 Royal Netherlands Air Force airbases added 2004/2005
MetNetAutomated Stationsand Airport Systems
KNMI
Navy
Air Force
2005/2006 9 platforms
5
MetNet Data Flow
Cloud cover and amounts for 3 layers
SAFIRalgorithm
Ceiloalgorithm
Lightning discharges
C1,C2,C3,ZVand
MOR
Strikes within 15 and 20km of station
wawaalgorithm
Ta,U,
MOR,Ni,
PW,etc.
wawa, Wa1Wa2
Cloud top temperature and fraction
Precipitation
CIBIL
Report-generation
SYNOP,METAR,
etc.
Sensor
METEOSAT
SAFIR
RADAR
Sensor Report-generation
METAR,etc.
Cloud cover and amountsCeilo
algorithm
C1,C2,C3,ZV
wwalgorithm w'w' RE
Airport
Ta,U,
MOR,Ni,
PW,etc.
AWS
RMITa, U, MOR, WR, WS,P
Sensor
Data
Database
Data
Database
6
Data Usage/Visualisation
• Visualisation/configuration/maintenance/report-entry within
MetNet using Almos client systems.
Maintenance staff and observers/forecasters.
• 10-minute data of entire MetNet provided to internal and
external users.
• Visualised by KNMI applications in time series and
geographically incl. alarms and presented on intranet.
• Local presentation of 12-second airport data for ATC, Fire
brigade, SAR...
Sensor map Schiphol airport
System overview central site
12-second local presentation
10-minute intranet presentation
10-minute AVW tools
12
MetNet Key Numbers
• Airport system Schiphol
60 SIAMs; 66 sub-stations (physically 23xZM, pseudo, other
airports)
12 ‘Runways’; 2 take-off + 2 landing, Reg. QNH & TL
runway dep. sensors; backup sensors; cross/tail winds etc.
12 sec. updates (1300 variables out of 2100)
• Central system De Bilt
21 AWSs; 7+9 airports; 27 DNZ; 20 ZEGE; 26 MSW
total of 350 (sub)stations
2500 1-min variables; 4900 10-min; 9600 total; 7 days
• Configuration changes (distributed centrally) > 100.
13
Availability
Non-availability measurement systems (%)
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
Airports AWS Radar North Sea SAFIR Satellite
Measurement system
% 1997
1998
1999
2000
2001
2002
2003
2004
14
MetNet Evaluation and Future
Project finished on time with required functionality and stable.Cooperation Almos and KNMI resulted is a good product.
Maintenance had difficult and busy start.MetNet very dynamic: 5th RWY Schiphol, renumbering RWYs, many sensor and some station changes, 9 airbases).
New functionality: FLITS, Auto METAR, Auto Trend, security issues, maintenance tools, OS upgrade.
Upcoming changes: ISDN GRPS, AVW-RNLAF, FTP-XML format platforms, BUFR, bugs/wishes...
Tools for 10-minute data visualisation and experience in usage.