Hyperspectral Remote Sensing of Ocean Waters SPECTRAL Lab Department of Geography University of Vict

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Hyperspectral Remote Sensing of Ocean
WatersSPECTRAL Lab Department of
GeographyUniversity of Victoria
Dr. Maycira Costa

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RESEARCH TEAM
Eduardo Loos - Oceanographer Ph.D.
student Geography
Maycira Costa Bio. Oceanographer Nattan the
cutest of the group
Laurie Gallagher - Geographer M.Sc. Student SEOS
Chris Piller Env. Eng. M.Sc Student Geography
Thiago Silva - Biologist Nick Komick Ph.D.
Student Undergraduate Geography Geography
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• GENERAL GOALS.
• Fluxes of bio-geo optical matter and others from
  land to the
• ocean.
• (biogeochemical processes, quantify human
  impacts)
• Light field in the water column productivity,
  climate change.
• NEPTUNE - Ocean Climate Dynamics and Effects
  on Marine Biota , Water Column Processes
• Optimize biogeo-optical models for costal
  waters.
• HERO (Hyperspectral Environment and Resources
  Observer)
• Canadian Space Agency

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SPECTRAL LAB CAPABILITIES
1. LAB

• High Performance Liquid Chromatography (HPLC)
• Pigment characterization
• Dissolved organic material
• Water analysis
• -Inorganic suspended load
• -Phytoplankton species
• -pH
• -Dissolved oxygen
• -Conductivity

• Dark room with water tank
• Controlled lab experiments

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2. FIELD Hyperspectral Instruments - HyperPro -
Satlantic
350-800nm, 135 channels, 3.3nm spectral sampling
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Example of data acquired In-water - Irradiance
Downwelling Irradiance (Eu) uW/cm2/nm
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Example of data acquired In-water - Radiance
Upwelling Radiance (Lu) uW/cm2/nm/sr
CTD, fluorescence
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Example of data acquired In-water CTD,
flurescence
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- HyperSAS - Satlantic
350-800nm, 135 channels, 3.3nm spectral sampling
Ed
Ls
Above-water
Lw
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Example of data acquired Above-water
ES
LSKY
LWATER
Lw
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How we operate in the field (small and large
vessels)
HyperSAS
Es
HyperPro
Water filtration
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How we operate in the field
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Temporary lab set up..
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3. OPTICAL MODELLING Modelling Reflectance,
Absorption, and Backscattering to solve for the
water optical constituents
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Optical modelling . Remote Sensing Reflectance
(Rrs (0)) HyperPro in-water Rrs(0) (Lu(0-,
0m) (1 ?(?,?)) / ?2) / Es HyperSAS
above water Rrs(0)above (LWATER (? LSKY))
/ Es
Rrs (0)
nm
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• Optical modelling .
• HYDROLIGHT radiative transfer numerical model
  (Mobley, 2003)
• Semi-analytical models

Absorption (m-1)
Rrs (0)
measured
nm
Backscattering (m-1)
modelled
Total
nm
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Rrs (0)
nm
?1/ ?2 and bio-optical models
R20.73
R20.87
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4. AIRBORNE AND SATELLITE IMAGERY inverse the
models. Hyperion Image
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CASI Image
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CASI Image Fraser plume
12 km
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Spatial variation of Chla
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Spatial variation of TSS
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Casi Roberts Bank habitats
Mosaic
Spectral classification
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SPECTRAL Lab Department of GeographyUniversity
of Victoria
Dr. Maycira Costamaycira_at_office.geog.uvic.ca