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DWD Automatic Weathers Stations on Sea

DWD Automatic Weathers Stations on Sea. Systems in Operation (03/11). 16 Ships 3 Lightvessels 2 Lighthouses 3 Buoys 1 Navigational Beacon 2 E-SURFMAR Ships 1 SCAWS. Types of stations. Ships + Buoys position and direction variable standard set of sensors

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DWD Automatic Weathers Stations on Sea

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  1. DWD Automatic Weathers Stations on Sea DWD TI33 A4, Henry Kleta

  2. Systems in Operation (03/11) • 16 Ships • 3 Lightvessels • 2 Lighthouses • 3 Buoys • 1 Navigational Beacon • 2 E-SURFMAR Ships • 1 SCAWS DWD TI33 A4, Henry Kleta

  3. Types of stations • Ships + Buoys position and direction variable standard set of sensors FM-13 SHIP (Fishery Protection Vessels delayed in GTS) • Lightvessels position fixed, direction variable standard set of sensors plus sunshine plus visibility FM-12 SYNOP • Lighthouses position and direction fixed standard set of sensors plus sunshine FM-12 SYNOP DWD TI33 A4, Henry Kleta

  4. Weather stations on sea (fixed positions) DWD TI33 A4, Henry Kleta

  5. Functionalities • Automatic acquisition of meteorological data at exposed positions at sea certified according to DIN ISO 9001:2000 • Supply of meteorological data for national and international programs and models Forecasts of various institutions (DWD, BSH, WSA, HPA, ...) Data is routed into GTS for EUMETNET, NMS, ... Data can be used as reference for satellite soundings • Supply of meteorological data onboard (for Scientists) proprietary NMEA 0183 telegram DWD TI33 A4, Henry Kleta

  6. MILOS – System Overview • Central Unit (MILOS) • Sensors (wind, temperatures, humidity, pressure) • Extra sensors (sunshine, visibility) • NMEA Source (position, movement, heading) • DCP (satellite communication) • PC (visualisation, acquisition of visual observations) DWD TI33 A4, Henry Kleta

  7. Datalogger MILOS • Central unit of the AWS central point of star shaped cabling • Collects and processes sensor and NMEA data I/O: analogue, digital, serial • Generates permanent data output (for scientists) floating 1-min mean values • Provides data for visualisation (PC on bridge) current values and graphical trends • Generates FM-13 SHIP (hourly) weather report, sent via DCP DWD TI33 A4, Henry Kleta

  8. Standard Sensors • Wind Thies (WR: 8bit Gray-Code, WG: 3..1042Hz = 0,3..50m/s) • Temperature (Air) Friedrichs PT100 (-40..60°C) • Temperature (Water) Friedrichs PT100 in plung-in-welder, or DWD PT100 magnet type (-10..40°C) • Humidity Rotronic MP-100 or Vaisala HMP45D (0..100%) • Pressure AIR DB-1A or Vaisala PTB220A with inlet on deck (800..1060hPa) DWD TI33 A4, Henry Kleta

  9. Extra Sensors • Sunshine Siggelkow Soni E2 (TTL-Level Yes/No) • Visibilty Impuls-Physik Fumosens IV (100m..10km) • Compass (for true wind calculation) Thales 3011 GPS-Compass DWD TI33 A4, Henry Kleta

  10. Software • Runs on Standard Windows-PC (needs serial link) • Facility to enter visual observations with help system • Visualisation of all data • Backup of some data • PC and Software optional DWD TI33 A4, Henry Kleta

  11. ABWST Mk II – System Overview Wind Pressure Humidity Temp (Air) Temp (Water) Navigation Radiation Central-Unit (CR1000) Weather Report (1/h) Scientific System (1/s) Service DWD TI33 A4, Henry Kleta

  12. Sensors • Wind Thies Ultrasonic-Anemometer • Air Pressure: Vaisala PTB220 Temperature: Ketterer LTS 2000 (PT100) Humidity: Rotronic MP101 • Radiation DSR: Kipp & Zonen CMP21 Pyranometer DLR: Kipp & Zonen CGR4 Pyrgeometer • Navigation Thales 3011 GPS-Compass (RMC + HDT) or single antenna GPS (RMC) DWD TI33 A4, Henry Kleta

  13. Dataoutput • Permanent output (once per second) proprietary NMEA telegram ($PDWDC,...) $PDWDC,YYMMDD,HHMMSS,DDMM.m,DDDMM.m,SS.s,CCC,c,HHH.h,WDR.r,WSR.r,WDT.t,WST.t,TA.a,UUU.u,PRRR.r,PNNN.n,TW.w,RSW.w,RLW.c,RLW.s,TLW.s,,, raw data, no preprocessing (mean,...) with dead time for slow sensors (i.e. pressure) with timestamp (UTC) and position (from navigational data) • Weather report (hourly) FM13 – SHIP (BBXX...), transmission with DCP with unmasked (Dxxx) or masked callsign (SCADExx) DWD TI33 A4, Henry Kleta

  14. Datatransmission • One report per hour (poss. + 1 x BSH / TS, poss. + 6 x Storm) • No transmission costs • Quality: approx. 92% average (16 AWS, 62.9%..99.9%) • Dataflow: METEOSAT GTS DWD AWS EUMETSAT Darmstadt DWD Offenbach DWD Hamburg DWD TI33 A4, Henry Kleta

  15. Future Plans • New stations some new ships in pipeline – Schwedeneck, Sonne • Conversion of fixed Stations to Ships Fehmarn Belt and Bake Zulu will be converted to Ships (FM-13) • Milos replacement see TT-AWS, TT-on-T • High Datarate DCPs will be introduced in ? more data, more often, binary data possible DWD TI33 A4, Henry Kleta

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