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Exploring Biological Phenomena in Ocean through Geostationary Hyperspectral Imaging

Discover how geostationary hyperspectral imaging can address various biological science questions related to ocean properties and phenomena like phytoplankton biomass, diel variability, and coastal forcings. Learn about spectral resolution, cloud avoidance, and more at NASA GEO-CAPE workshop.

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Exploring Biological Phenomena in Ocean through Geostationary Hyperspectral Imaging

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  1. Ocean Biological Properties Ru Morrison NASA GEO-CAPE workshop August 19, 2008

  2. Why? "What biological science questions can we address with geostationary hyperspectral imager?" • Spectral Resolution • Hyperspectral - Improved constituent algorithms • Temporal and Spatial Resolution • Cloud avoidance • Coastal Oceanographic forcings • Biological phenomena / diel variability NASA GEO-CAPE workshop August 19, 2008

  3. Time and Space GEO-CAPE From Dickey, 1991 Reviews of Geophysics NASA GEO-CAPE workshop August 19, 2008

  4. Top of the Atmosphere Reflectance Atmospheric Correction Atmosphere Remote Sensing Reflectance Reflectance Model Inherent Optical Properties IOP models Phytoplankton CDOM Non-algal Particles Species (photoadaptation) photoacclimation Source, photobleaching Composition (size) NASA GEO-CAPE workshop August 19, 2008

  5. Reflectance Algorithms O‘Reilly, J. E. and others 2000. Ocean color chlorophyll a algorithms for SeaWiFS, OC2, and OC4: Version 4, p. 9-27. SeaWiFS postlaunch calibration and validation analyses, Part 3. SeaWIFS post launch technical report series. NASA. NASA GEO-CAPE workshop August 19, 2008

  6. a(442) after removal of bottom effects with a “hyper”-spectral sensor [mg m-3] [m-1] Hyperspectral‘True’ water column optical properties [Chl] with standard algorithm NASA GEO-CAPE workshop August 19, 2008

  7. MERIS FR data, Dec. 14, 2004 Bathymetry of Bahamas derived from MERIS Rrs(λ) with HOPE Data from ZhongPing Lee, MS State NASA GEO-CAPE workshop August 19, 2008

  8. Hyperspectral – Phytoplankon functional groups Karenia brevis Gulf of Mexico Remote Sensing Reflectance HAB Abundance Data from Steve Lohrenz, USM Lee et al. (2002) Applied Optics, 41(27), 5755-5772 Millie et al. (1997) Limnol. Oceanogr., 42, 1240-1251 NASA GEO-CAPE workshop August 19, 2008

  9. Coastal Oceanographic Forcings NASA GEO-CAPE workshop August 19, 2008

  10. Massachusetts Bay AVPPO Deployments FRONT site Martha’s Vineyard Coastal Observatory NASA GEO-CAPE workshop August 19, 2008

  11. Tidal Fronts NASA GEO-CAPE workshop August 19, 2008

  12. Ullman, D. S., and P. C. Cornillon. 1999. Satellite-derived sea surface temperature fronts on the continental shelf off the northeast U.S. coast. Journal of Geophysical Research 104: 23459-23478. NASA GEO-CAPE workshop August 19, 2008

  13. Episodic Events NASA GEO-CAPE workshop August 19, 2008

  14. Internal waves NASA GEO-CAPE workshop August 19, 2008

  15. Jackson, JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 112, C11012, doi:10.1029/2007JC004220, 2007 NASA GEO-CAPE workshop August 19, 2008

  16. Internal Waves Jackson, JOURNAL OF GEOPHYSICAL RESEARCH, VOL. 112, C11012, doi:10.1029/2007JC004220, 2007 NASA GEO-CAPE workshop August 19, 2008

  17. Diel variability NASA GEO-CAPE workshop August 19, 2008

  18. Phytoplankton Biomass Diel cycle • Mean properties for top 20 m • Diel variation • Either • Division towards the end of day • Changes in accessory pigment concentrations • Or combination of both Phytoplankton peak ratio Scattering ratio Non-algal absorption ratio NASA GEO-CAPE workshop August 19, 2008

  19. Diel cycle NASA GEO-CAPE workshop August 19, 2008

  20. Phytoplankton fluorescence NASA GEO-CAPE workshop August 19, 2008

  21. Phytoplankton Physiology MODIS Aqua observations 2006 NASA GEO-CAPE workshop August 19, 2008

  22. NASA GEO-CAPE workshop August 19, 2008

  23. Phytoplankton Physiology MODIS Aqua observations 2006 NASA GEO-CAPE workshop August 19, 2008

  24. Why? "What biological science questions can we address with geostationary hyperspectral imager?" • Spectral Resolution • Hyperspectral - Improved constituent algorithms • Temporal and Spatial Resolution • Cloud avoidance • Coastal Oceanographic forcings • Biological phenomena / diel variability NASA GEO-CAPE workshop August 19, 2008

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