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

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, testing Implementation of the 2 largest stations by Almos 2002 Implementation other stations by KNMI parallel to old system 21 Nov 2002 Synoptic part operational 28 Jan 2003 Airports operational (data format ATC changed)

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

MetNet Automated Stations and Airport Systems 2005/2006 9 platforms MetNet Automated Stations and Airport Systems KNMI Navy Air Force

MetNet Data Flow

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

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.

Availability

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. Voorlezen!? Het laatste item slaat op HIM en verwijzen naar jouw verhaal. 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.