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1 st generation of automatic weather stations

Use of AWS at MeteoSwiss: Experiences and Perspectives Thomas Frei, MeteoSwiss, 8044 Zürich, Switzerland. 1 st generation of automatic weather stations. Problems nowadays: New demands by data users Difficulties by replacing instruments IT – Infrastructure must be updated

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1 st generation of automatic weather stations

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  1. Use of AWS at MeteoSwiss: Experiences and PerspectivesThomas Frei, MeteoSwiss,8044 Zürich, Switzerland

  2. 1st generation of automatic weather stations • Problems nowadays: • New demands by data users • Difficulties by replacing instruments • IT – Infrastructure must be updated • Certain stations must be replaced (either because of the user or because of the land owner)

  3. 1st generation of automatic weather stations

  4. Procedures for the introduction of the 2nd generation of AWS 1. User requirements – technology free 2. Critical review, cost-benefit approach 3. Statement of guidance 4. Implementation plan

  5. Data user‘s needs • Governmental organisations • Universities • Private meteo agencies • National weather service (including climatological unit)

  6. Definition of different weather stations according to user requirements

  7. List of parameters (examples) measured at the different station types

  8. The new ground based AWS network in Switzerland

  9. General data flow

  10. Challenges for the future • Demands by users change fast • Technology concerning the sensors increases fast  Longtime support is not guaranted • IT – lifecycle becomes shorter • Land owner are less cooperative in terms of long-planning

  11. Quality control and assurance

  12. 1st generation of AWS Only one type of weather stations (ANETZ) All needs must be satisfied by one type of AWS A lot of own research and development was necessary Several companies were involved for Logger, CDAS Human observation at the same spot as AWS 2nd generation of AWS Three types of weather stations are defined (B, S1, S2) Climatological needs are satisfied for example mainly by B-stations ADAS, CDAS, NIMDAS are bought from the market Only two companies are involved (except sensors) Human observation independent from AWS Comparison of 1st versus 2nd generation of AWS

  13. Implementation for the 2nd generation of AWS in Switzerland

  14. Special thanks to: Dr. Alain Heimo, MeteoSwiss, Payerne Dr. Thomas Konzelmann, MeteoSwiss, Zürich Dr. Catherine Stocker, MeteoSwiss, Zürich

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