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GLEON update Finland, March 2007
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  1. GLEON update Finland, March 2007

  2. N Rotorua Lakes District

  3. Diel oxygen data: Lake Rotorua • ~ 4 months of surface DO measurement every 15 min. • General trend of decreasing DO with increasing temperature. • Strong variation at scales < 1 day.

  4. Diel oxygen data: Lake Rotorua Example: 3 weeks, 30 Oct to 20 Nov 2006. Example:

  5. Projected remote monitoring sites L. Rotoiti: Crater Currently live: Tarawera weather station Prototype lake buoy: Lake Rotorua (Mar/Apr 2007) Sites to come: Lake Rotoiti: crater and narrows Lake Tarawera L. Rotoiti: Narrows L. Rotorua L. Tarawera Tarawera: Weather station

  6. Monitoring buoy Delivered Dec 2006; the fitting of the electronics is (almost) complete, and deployment is being arranged with local authorities.

  7. Buoy station sensors Light meters chl a DO ~1 m • Datalogger –iQuest “DS-4483” logger Initial deployment: • Thermistor string -Apprise Technologies “TempLine” • Dissolved oxygen -Zebra-tech “d-opto” optical sensors • Fluorometer –Seapoint chlorophyll fluorometer Sensors to be added later: • pH and chloride –INW “TempHion T3” sensors • Irradiance –Appogee QSO quantum sensors pH/chloride/temp Thermistor string (11 sensors, one every 2 meters) redox/nitrate/temp pH/chloride/temp DO ~ 20m

  8. Telemetry/databasing • NZ company “iQuest” remote monitoring network “Hydrotel” https://data.iquest.co.nz/hydrotel Login: guest Passwd: guest This login allows access to 2 weather stations, as a demo of the hydrotel inerface