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GLEON 9 ‘Cool Things’ presentation Part 1: Remote sensing of Rotorua lakes

GLEON 9 ‘Cool Things’ presentation Part 1: Remote sensing of Rotorua lakes Mat Allan, David Hamilton, Ryosuke Nakamura, Hirokazu Yamamoto, Chris McBride , Brad Scarfe and Disk Immenga Part 2: Fluorescence quenching in real time data David Hamilton and Chris McBride.

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GLEON 9 ‘Cool Things’ presentation Part 1: Remote sensing of Rotorua lakes

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  1. GLEON 9 ‘Cool Things’ presentation Part 1: Remote sensing of Rotorua lakes Mat Allan, David Hamilton, Ryosuke Nakamura, Hirokazu Yamamoto, Chris McBride , Brad Scarfe and Disk Immenga Part 2: Fluorescence quenching in real time data David Hamilton and Chris McBride Monday 12 October, Manitowish Waters, Wisconsin, USA

  2. Part 1: Remote sensing of Rotorua lakes Mat Allan, David Hamilton, Ryosuke Nakamura, Hirokazu Yamamoto, Chris McBride , Brad Scarfe and Disk Immenga

  3. Lake Observing and Modeling and the Use of Integrated and Secure Data Resources • Collaboration within GLEON and PRAGMA to integrate sensor and satellite data • Extrapolate point measurements of temperature and fluorescence to all parts of the lake, leading to more accurate modeling • GEOGrid IT infrastructure includes a worldwide coverage ASTER satellite data and digital elevation data • GEOGrid ASTER thermal data can be used to map lake surface temperature • GEOGrid also includes MODIS data products with the possibility of FORMOSAT in the future

  4. GEOGrid is developing an IT infrastructure providing heterogeneous distributed databases (e.g. satellite data, field sensor data, GLEON data). • Appropriate access control using GSI+VOMS for sensitive data(e.g. ASTER data and Formsat-2 data) • This IT infrastructure will facilitate automatic linking of satellite and sensor data such as thermal temperature imagery/buoy temperature and CHLA fluorescence/satellite reflectance

  5. This integration of data will enable efficient comparisons between satellite and field data which will enhance algorithm development for satellite data • It will also enable ease of satellite data product validation using sensor data

  6. ASTER SST (atmospherically corrected) test product Lake Rotorua buoy data ASTER temp at buoy is 22.14 degrees Celsius Wind

  7. FORMOSAT 2 ROTORUA 2 October 2008

  8. FORMOSAT 2 ROTORUA 2 October 2008

  9. Part 2: Fluorescence quenching in real time data David Hamilton and Chris McBride

  10. If you are monitoring real time ‘chlorophyll’ you need to be aware of chlorophyll fluorescence quenching (or what they don’t tell you about with chlorophyll fluorescence sensors) Two components: 1. Photochemical quenching 2. Non-photochemical quenching

  11. Chlorophyll fluorescence developing over duration of day in Lake Taupo Chlorophyll fluorescence Photosynthetically Active Radiation

  12. Chlorophyll fluorescence – Lake Rotorua monitoring buoy (just over one month showing development of Microcystis bloom) Days in October

  13. Chlorophyll fluorescence – Lake Rotorua monitoring buoy (eight days) Chlorophyll fluorescence – Lake Rotorua monitoring buoy Chlorophyll fluorescence Days in October

  14. Chlorophyll fluorescence and temperature – Lake Rotorua monitoring buoy (eight days) Chlorophyll fluorescence Days in October

  15. Fraction of fluorescence quenching versus irradiance for different seasons Fractional chlorophyll fluorescence quenching Mixed layer depth integrated irradiance (MJ)

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