Sensitivity of inherent optical properties from ocean reflectance inversion models to satellite instrument wavelength suites

Frontiers in Earth Science
P Jeremy Werdell, Lachlan I W McKinna

Abstract

The Earth science community seeks to develop climate data records (CDRs) from satellite measurements of ocean color, a continuous data record which now exceeds twenty years. Space agencies will launch additional instruments in the coming decade that will continue this data record, including the NASA PACE spectrometer. Inherent optical properties (IOPs) quantitatively describe the absorbing and scattering constituents of seawater and can be estimated from satellite-observed spectroradiometric data using semi-analytical algorithms (SAAs). SAAs exploit the contrasting optical signatures of constituent matter at spectral bands observed by satellite sensors. SAA performance, therefore, depends on the spectral resolution of the satellite spectroradiometer. A CDR spanning SeaWiFS, MODIS, OLCI, and PACE, for example, would include IOPs derived using varied wavelength suites if all available wavelengths were considered. Here, we explored differences in derived IOPs that stem simply from the use of (eight) different wavelength suites of input radiometric measurements. Using synthesized data and SeaWiFS Level-3 mission-long composites, we demonstrated equivalent SAA performance for all wavelength suites, but that IOP retrievals vary by se...Continue Reading

References

Aug 6, 2013·Applied Optics·Toby K WestberryZhongping Lee
Apr 4, 2015·Optics Express·Frédéric Mélin, Gert Sclep
Jul 15, 2016·Optics Express·Lachlan I W McKinnaChristopher W Proctor

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