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Water Clarity Assessment along the Florida Keys Reef Tract Using Ocean Color Satellite DATA

Brian Barnes, Chris Ellis, Bill Fisher, Chuanmin Hu, John Lehrter , Luke McEachron , Kathleen O’Keife , Blake Schaeffer, Bruce Spiering , Lauren Underwood 26 September 2012. Water Clarity Assessment along the Florida Keys Reef Tract Using Ocean Color Satellite DATA. Objectives.

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Water Clarity Assessment along the Florida Keys Reef Tract Using Ocean Color Satellite DATA

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  1. Brian Barnes, Chris Ellis, Bill Fisher, Chuanmin Hu, John Lehrter, Luke McEachron, Kathleen O’Keife, Blake Schaeffer, Bruce Spiering, Lauren Underwood 26 September 2012 Water Clarity Assessment along the Florida Keys Reef Tract Using Ocean Color Satellite DATA

  2. Objectives • Describe new satellite products • Applications of satellite data products in FKNMS Rezoning Effort • Ecological Research and Monitoring (W.33) • Florida Bay influences (W.24) • Researching Water Quality Issues (W.32) • Provide FKNMS with satellite data products • Discussion • Assess utility of data products as part of FKNMS Rezoning Effort

  3. In situ water clarity measurements • April 2011, August 2012 • HyperPRO – hyperspectralKd • 26 stations, 53 profiles • 33 profiles passed QA • 10 concurrent with satellite

  4. Validation of satellite water clarity Satellite derived Kd 488 (m-1) R2=0.91 HyperPRO in situ Kd 488 (m-1)

  5. Status & Trends: average condition January April July October

  6. Status & Trends: regional variation B C D E b BB c e F A d d β a γ (from Boyer, WQMP) α δ ε ζ UK MK Distance from Shore 0 – 4 km 4 – 8 km 8 – 12 km LK MQ DT

  7. Status & Trends: seasonal variation Amplitude of Seasonal Cycle

  8. Episodic events: Monthly mean -80.5 -81 -81.5 -82 2006 2002 2008 2010 2004

  9. Episodic events: Monthly anomaly -80.5 -81 -81.5 -82 2006 2002 2008 2010 2004

  10. Florida Bay Influences November 23, 2005

  11. Florida Bay Influences December 7, 2003

  12. Monitoring: track water masses December 20, 2003 (two weeks later)

  13. Ecological Research and Monitoring Looe Key CREMP Station

  14. Other remote sensing data sources • Temperature (MODIS, AVHRR) • Satellite overpasses several times daily • Chlorophyll, CDOM concentrations • Satellite algorithms in validation stage

  15. Distribution mechanisms

  16. Discussion • Use for zoning decision making • Temporal zoning • Based upon seasonal events • Zone specific regulations • Size, resource protection • Protect and preserve coral reefs • Minimize adverse socioeconomic impacts • Socioeconomic considerations • Provide water clarity for divers • Assess rezoning performance results based upon data products provided • Solicit feedback from WQPP, SAC

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