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Remote Sensing of Chlorophyll in Matagorda Bay and Surroundings

Remote Sensing of Chlorophyll in Matagorda Bay and Surroundings. Claire G. Griffin GIS in Water Resources Fall 2010. Outline. Utility of Remote Sensing for Water Quality Data Matagorda Bay Data Image Processing Mapping Chlorophyll Implications. Chlorophyll.

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Remote Sensing of Chlorophyll in Matagorda Bay and Surroundings

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  1. Remote Sensing of Chlorophyll in Matagorda Bay and Surroundings Claire G. Griffin GIS in Water Resources Fall 2010

  2. Outline • Utility of Remote Sensing for Water Quality Data • Matagorda Bay • Data • Image Processing • Mapping Chlorophyll • Implications

  3. Chlorophyll

  4. Remote Sensing of Water Quality • Location-specific, empirical algorithms • Continuous data, spatially explicit maps, access to remote areas

  5. Matagorda Bay • 3rd largest estuary • Connected to Lavaca and Tres Palacios Bays • Lavaca River and Colorado River

  6. Data • Chlorophyll from TCEQ and TCOON • 70 sites • 20 corresponded with Landsat scenes • 17 Landsat Scenes

  7. Image Processing Download from USGS Window to include only Matagorda Bay Atmospheric Correction

  8. Mapping Chlorophyll Regress combinations of bands against Chl-a Extract reflectances from Landsat data Validate with data from other dates Apply best algorithm to Landsat imagery

  9. Implications and Uses • Monitoring potential • Tracking change • Relating to watershed characteristics From Arismendez et al. (2009)

  10. Questions?

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