Characterization of radiance from the ocean surface by hyperspectral imaging

Carrizo, Carlos; Gilerson, Alexander; Foster, Robert; Golovin, Andrii; El-Habashi, Ahmed

doi:10.1364/OE.27.001750

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Characterization of radiance from the ocean surface by hyperspectral imaging

2019
By Carrizo, Carlos ; Gilerson, Alexander ; Foster, Robert ; ...
Source: Optics Express, 27, 1750-1768

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Journal Title:

Optics Express
Personal Author:

Carrizo, Carlos ; Gilerson, Alexander ; Foster, Robert ; Golovin, Andrii ; El-Habashi, Ahmed

Carrizo, Carlos ; Gilerson, Alexander ; Foster, Robert ; Golovin, Andrii ; El-Habashi, Ahmed Less -
NOAA Program & Office:

CREST (Center for Earth System Sciences and Remote Sensing Technologies and Tech Center at City College of CUNY) ; Education and outreach

CREST (Center for Earth System Sciences and Remote Sensing Technologies and Tech Center at City College of CUNY) ; Education and outreach Less -
Description:

A novel snapshot hyperspectral imager is introduced for ocean color (OC) applications and its capabilities are demonstrated. The instrument provides hyperspectral radiance images with a wide field-of-view (FOV) and short exposure time, which is valuable for the direct characterization of the wind-roughened surface in various illumination conditions and wind speeds. Uncertainties in the total(), sky () and derived water-leaving ()radiances at viewing angles of 20–60° are determined as a function of wind speed together with associated correlation coefficients and variances of the sea surface reflectance coefficient ρ. Estimated uncertainties can partially explain the inaccuracy of satellite retrievals in the blue bands in the coastal waters. It is shown that in above-water measurements in no-glint conditions with viewing and azimuth angles of 40° and 90°, respectively, for both () and () the impact of FOV is minimal at least up to measured W = 5.7 m/s for full-angle FOV of 4° and larger. Implications of uncertainties for the derivation of water leaving radiance in above-water ship-borne and AERONET-OC measurements are discussed.
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Hyperspectral Imaging Ocean
Source:

Optics Express, 27, 1750-1768
DOI:

https://doi.org/10.1364/OE.27.001750
Document Type:

Journal Article
Funding:

Grant no. NA16SEC4810008
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urn:sha256:aab5423937330d817d167dc69543019369409f19eaaaf9011edb8613b3684633
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Characterization of radiance from the ocean surface by hyperspectral imaging

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