Hyperspectral absorption coefficient of &#x201C;pure&#x201D; seawater in the range of 350&#x2013;550&#x2009;&#x2009;nm inverted from remote sensing reflectance

Zhongping Lee; Jianwei Wei; Ken Voss; Marlon Lewis; Annick Bricaud; Yannick Huot

doi:10.1364/AO.54.000546

Applied Optics
Vol. 54,
Issue 3,
pp. 546-558
(2015)
•https://doi.org/10.1364/AO.54.000546

Hyperspectral absorption coefficient of “pure” seawater in the range of 350–550 nm inverted from remote sensing reflectance

Zhongping Lee, Jianwei Wei, Ken Voss, Marlon Lewis, Annick Bricaud, and Yannick Huot

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Zhongping Lee, Jianwei Wei, Ken Voss, Marlon Lewis, Annick Bricaud, and Yannick Huot, "Hyperspectral absorption coefficient of “pure” seawater in the range of 350–550 nm inverted from remote sensing reflectance," Appl. Opt. 54, 546-558 (2015)

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- Atmospheric and Oceanic Optics
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About this Article
History
- Original Manuscript: October 20, 2014
- Revised Manuscript: December 5, 2014
- Manuscript Accepted: December 6, 2014
- Published: January 20, 2015
Virtual Issues
Virtual Journal for Biomedical Optics Vol. 10, Iss. 2

Abstract

Hyperspectral (every 5 nm) absorption coefficients of “pure” seawater in the range of 350–550 nm are derived from remote sensing reflectance measured in oligotrophic oceans. The absorption spectrum is reduced by $\sim 50 - 70 %$ for the 350–400-nm range and $\sim 5 - 10 %$ for the 510–530-nm range compared with the commonly adopted standard for ocean color processing and shows different spectral curvatures. The application of this new spectrum resulted in better retrievals of the phytoplankton absorption coefficient in oligotrophic oceans and will provide better closure of remote sensing reflectance for the UV–visible domain.

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Wavelength (nm)	$a_{w}$ ( $m^{- 1}$ )	Smoothed $a_{w}$ ( $m^{- 1}$ )	$Δ a_{w}$ ( $m^{- 1}$ )	Wavelength (nm)	$a_{w}$ ( $m^{- 1}$ )	$Δ a_{w}$ ( $m^{- 1}$ )
350	0.0071	—	0.0011	455	0.0073	0.0005
355	0.0062	—	0.0011	460	0.0076	0.0005
360	0.0052	0.0056	0.0010	465	0.0081	0.0005
365	0.0050	—	0.0009	470	0.0089	0.0005
370	0.0042	0.0046	0.0009	475	0.0099	0.0005
375	0.0041	—	0.0008	480	0.0109	0.0005
380	0.0037	—	0.0008	485	0.0118	0.0005
385	0.0030	0.0035	0.0007	490	0.0132	0.0005
390	0.0032	—	0.0007	495	0.0154	0.0005
395	0.0028	0.0032	0.0006	500	0.0187	0.0005
400	0.0034	0.0032	0.0006	505	0.0230	0.0006
405	0.0032	—	0.0006	510	0.0302	0.0006
410	0.0031	—	0.0005	515	0.0368	0.0007
415	0.0031	—	0.0005	520	0.0387	0.0007
420	0.0032	—	0.0005	525	0.0400	0.0008
425	0.0033	—	0.0005	530	0.0418	0.0008
430	0.0036	—	0.0005	535	0.0443	0.0008
435	0.0038	—	0.0005	540	0.0470	0.0007
440	0.0044	—	0.0005	545	0.0507	0.0006
445	0.0054	—	0.0005	550	0.0562	0.0006
450	0.0068	—	0.0005	—	—	—

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Applied Optics