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Building and Operating a Station Network for Improved Climatology and Hydrology Data

This document outlines the establishment and operation of a modernized station network aimed at enhancing climatology and hydrology data collection. The project focuses on upgrading the voluntary observer network, integrating new measurement and information technologies to automate instrument readings and streamline data processing. Key objectives include improving data quality, ensuring prompt availability, and implementing central data archiving and remote monitoring capabilities. The proposed changes aim to support effective climate and hydrology management, ultimately benefiting a wide range of stakeholders.

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Building and Operating a Station Network for Improved Climatology and Hydrology Data

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  1. Abteilung Messnetze und Daten Building and Operating a Station Network for Climatology and Hydrology K. Klapheck, S. Alsen, R. Bauer, A. Bungenstock Deutscher Wetterdienst Hamburg E-mail: Karl-Heinz.Klapheck@dwd.de Sönke.Alsen@dwd.de Rainer.Bauer@dwd.de Andre.Bungenstock@dwd.de Adress: Jenfelder Allee 70a D-22043 Hamburg

  2. Abteilung Messnetze und Daten • - Introduction • - Progress in building up the network • - Station description • - Facilities of the network • - Maintenance of software and hardware • - Final remarks

  3. Need for modernizing the ‚voluntary Observer network‘ for climatology/hydrology : by using new measurement- and information-technology and redesigning the net (locations, numbers, equipment of stations): achieve - automizing the readings of instruments - prompting eye observations into electronic data processing

  4. Other objectives of the new network - Improve data quality: same level as data from synoptical stations - fast availability of data - central archiving of data - remote monitoring and remote configuring of stations

  5. Building the network: working routines Providing hardware & software for station & network - fixing user requirements - writing specifications - procurement procedures - acceptance tests of prototypes - tests of series production - system modifications Activities at the site: - searching for station locations - granting contract with site owner - pre-installation of the measurem. area - provision of ISDN connection - installation of the measurement system - starting up and instruction

  6. Monitor program

  7. Service Programm Station scheme

  8. Station area

  9. Precipitation sensor Ott ‚Pluvio‘

  10. Observer‘s terminal: main menue Input met. Information actual values time series sent messages display/change system parameters quit

  11. Observer‘s activities send messages at fixed time of the day: - precip. height (control measurem.), snow depth, - state of the ground - estimation of wind, cloudiness, visibility send messages of continuous weather with general time indications or exact time intervals: - falling precipitation: y/n, type, intensity, frequency - deposited precipitation: dew, rime, slippery ice/snow - extraordinary weather appearances: electrical / optical phenomena, turbidity, extreme wind,... Display data, messages and system information Simple maintenance of sensors, set sensor status

  12. Features of the station network center - Calling data sets of time averages / sums of 1 min, 10 min, 1 h, 24 h of met. quantities Calling intervals: 1 h for ‚S‘ and ‚W‘ stations, 24 h for ‚N‘ stations, other intervals: configurable, and immediate calls - Receiving data on: incidents of exceeding thresholds of wind or precip. or certain weather penomena, system errors - Network monitoringfrom any site of DWD intranet: software update, configuration of station groups, survey of individual stations - Central data base - Backup System - Provisions for IT safety

  13. Landes- Zentralen Lokale Nutzer Scheme of the network composition

  14. Quality assurance of data 1. Provisions at the station: - Range check - Variability check - Generation of a quality byte for each value sent to the network center - Alarm generation 2. Provisions at the network center - Off-line quality control and monitoring system (see Spengler, R., Proc. TECO2002, Dibbern, J., Proc. TECO2005)

  15. AMDA III / N stations: 24 h sums of precipitation region: NW-Germany date: 20 Nov 06, 05.50 Screenshot ofQUALIMET

  16. System modification and maintenance From the view of resources : expected long lifetime of the network (but no more support from system provider) Station software: Station hardware: - components on store - test new marketable components and implement existing software Network center: merging with synopt. network center in preparation new requirements from users, remove faults modifications: who can do it ? Developers ? (if at hand) DWD staff: keeps system knowledge

  17. Final remarks Benefits of the new network : Improvement of climatological / hydrological data - less expenditure for observers: less errors - fast availability, time resolution of data - increased quality by on-line algorithms, monitoring programs, new hardware Profits for additional users: availability of actual data - AMDA III / S data: complement the synopical station network - AMDA III / N data: useful for flood modelling/forecasting - AMDA III / W data: warning management

  18. Thank you for attention

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