1. 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
EU tender procedure
Jan 2000 Contract with Almos Systems
Requirements, Specifications and Design
2001/2002 Building, HMI prototyping, testing Implementation of the 2 largest stations by Almos
Implementation other stations by KNMI parallel to old system
21 Nov 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

4. MetNet Automated Stations and Airport Systems
2005/ platforms
MetNet Automated Stations and Airport Systems
KNMI
Navy
Air Force

5. MetNet Data Flow

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...

7. Sensor map Schiphol airport

8. System overview central site

9. 12-second local presentation

10. 10-minute intranet presentation

11. 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 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 min variables; min; 9600 total; 7 days
Configuration changes (distributed centrally) > 100.

13. Availability

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.
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Merk op:
Dit zijn de verschillen als je 1-op-1 gebruikt. Het verstandig gebruik van de 10-minuut data heeft meerwaarde.
Een professionele gebruiker (meteoroloog) is vaak in staat een ‘afwijkende’ meting toch goed te interpreteren/ondervangen.