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DESIGN OF THE NEW AUSTRIAN METEOROLOGICAL NETWORK

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Title: DESIGN OF THE NEW AUSTRIAN METEOROLOGICAL NETWORK Author: Debit Last modified by: E.Rudel Created Date: 11/18/2008 12:16:41 PM Document presentation format – PowerPoint PPT presentation

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Title: DESIGN OF THE NEW AUSTRIAN METEOROLOGICAL NETWORK


1
DESIGN OF THE NEW AUSTRIAN METEOROLOGICAL NETWORK
  • Ernest Rudel
  • Zentralanstalt für Meteorologie und Geodynamik
  • Hohe Warte 38, 1190 Wien
  • Tel. 43 1 36026 2201, Fax 43 1 36026 72
  • E-Mail ernest.rudel_at_zamg.ac.at

2
Outline
  • Historical Overview
  • The New AWS Concept
  • Technical specifications
  • Future developments

3
Short view of meteorological measurements in
Austria
  • 1768 Regular measurements and observations in
    the monastery of Kremsmuenster
  • 1851 Foundation of ZAMG establishment of a
    meteorological observation system
  • 1865 First issue of a daily weather chart
  • 1981 First AWS in operation (local storing,
    transmission via telephone)
  • 1991 Network of all AWS via leased telephone
    lines
  • 1992 AWS generate automatically hourly
    Synopmessages
  • 2005 150 AWS, 100 conventional stations
  • 2005 Start of the project AWS_new Reason
    difficulties in guaranteeing the renewal of the
    spare parts, an increasingly old technology
  • 2008 250 AWS in operation

4
Concept of AWS_new
  • to shut down all manually operated classical
    climatic stations
  • to substitute all the AWS of the old generation
    with new ones (AWS_new)
  • to increase the network of AWS up to 250 stations
  • to improve the sensor equipment
  • to implement the new network 2007 and 2008

5
Why shut down all the conventional stations?
  • Increasing temporary coverage
  • Providing data from data sparse areas where human
    observations are not practical
  • Providing data continuously at frequent intervals
    and for any observation time
  • Eliminating the subjectivity in manual
    observations
  • Reflecting the requirements of all users of near
    real time synoptic data
  • Supporting the trends to reducing model grid
    scale and the need for more observations to be
    available in shorter timescales
  • an alleged potential to reduce costs

6
Purposes of a National Meteorological Network
  • data for quick and simple international exchange
  • data for weather prediction Supporting the
    trends to reducing model grid scale and the need
    for more observations to be available in shorter
    timescales
  • severe weather warning is the cornerstone of the
    ZAMG mission, requiring an appropriate and
    sustained infrastructure, requiring continuous
    improvement of the associated forecasts
  • prevention and mitigation of natural disasters
    through early warning and vulnerability
    assessment
  • weather-related hazards (e.g. storms, flooding
    e.g. by rivers, drought, heat waves, persisting
    hot weather, cold spells)
  • risk impacted by weather (e.g. transport,
    dispersion and deposition of radioactive or
    chemical pollutants)
  • weather sensitive segments of the economy (e.g.
    transport, aviation, energy and other utilities,
    agriculture, insurance or food industries)
  • requirements to deliver innovative services,
    especially in relation to civil security, but
    also regarding climate change and public health
    (chemical weather forecasting)

7
Purposes of a National Meteorological Network
(cont.)
  • Data for climate analysis and climate monitoring
  • High quality, well-calibrated long-term
    observations and measurements of a variety of
    climate elements are critical to the detection
    and prediction of climate variability and change,
    including trends due to human activities
    (urbanization, deforestation, etc)
  • expertise use (courts, assurance companies,
    regulations, standards, ...)
  • reflecting the requirements of all users of near
    real time synoptic and of offline climate data

8
Demands on a national Meteorological Network must
be assessed
  • to assess the impact of the new system to
    existing systems
  • to take care of all WMO standards
  • to follow the demands and need of the EUMETNET
    observation network
  • to maintain the operation of historically-uninterr
    upted stations and observing systems
  • to facilitate access, use and interpretation of
    data and derived products
  • adequate national spatial distribution
  • data in more population dense areas (greater
    demand for data)
  • data from important traffic routes
  • data from areas with pronounced minimum and
    maximum values
  • areas with distinctive gradients
  • continuity (Long time measurements on the same
    site)
  • unifying the quality checks and derived values
  • Standardising the entire dataflow and information
    systems

9
Additional needs of an improved National
Meteorological Network
  • increasing temporary and area coverage
  • transmitting precipitation data (minute data)
    every 5 minutes instead of 10 minutes in the
    former system
  • denser network in populated areas
  • providing data from data sparse areas where human
    observations are not practical or possible
  • data from mountain peaks using web cameras
    additionally
  • providing data continuously at frequent intervals
    and for any observation time and ensure a
    reliable data transmission also in case of public
    emergency,
  • secure transfer protocol with subcarrier
    transmission on analogue telephone lines
  • standard GSM link (hourly data)
  • satellite connection (25 of all the stations)

10
Additional needs of an improved National
Meteorological Network (cont.)
  • eliminating the subjectivity in manual
    observations. With universal interfaces between
    sensor and bus system the AWS can operate
    arbitrarily sensor systems with different signal
    output (digital, analogue or digital telegram)
  • e.g. connection of PW, snow depth, ceilometers,
    etc. without modification of the system
  • to choose station sites with the possibility to
    have a local technical support and additionally
    to have also a meteorological observer

11
AWS _ old
  • Disadvantage sometimes the senso-cable are very
    long

12
AWS _ new
13
Sketch of data flow
14
Network AWS_new
15
(No Transcript)
16
AWS
17
Conclusions
  • the upgrade and the extension of the automatic
    weather stations network in Austria ensures a
    quantitative and a qualitative improvement of the
    measurement of meteorological parameters .
  • the network of 250 AWS ensures a medium
    representativeness of approx. 320 km² (18x18km).
  • The increase of the temporal resolution of the
    measurement data in real time is required by
    different users of meteorological data (synop,
    climate, environment, economy, legal aspects) and
    especially for inputs in local area numerical
    models (ALADIN, ALARO, etc.)
  • the standardization of the network would make it
    possible to optimize the operational aspects by
    decreasing the costs of operation.

18
Future outlook
  • change old sensor types
  • e.g. hair hygrometer with dew point measurements
  • add sensors
  • e.g. PW, visibility, ceilometers, snow depth, etc
  • additional stations in climate or environmental
    sensitive areas
  • to upgrade the design of the network always on
    the knowledge of coordination and development of
    the meteorological infrastructure
  • to enhance the expertise on weather, climate,
    water and the related environment and to act as
    major contributors to
  • The safety and well being of people
  • Sustainable development and
  • Environmental protection

19
Thank you for your attention!
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