A topological approach for quantitative comparisons of ocean model fields to satellite ocean color data

2016 ◽  
Vol 17 ◽  
pp. 232-250 ◽  
Author(s):  
Hannah R. Hiester ◽  
Steven L. Morey ◽  
Dmitry S. Dukhovskoy ◽  
Eric P. Chassignet ◽  
Vassiliki H. Kourafalou ◽  
...  
Keyword(s):  
Ocean Color ◽  
Ocean Model ◽  
Topological Approach ◽  
Color Data ◽  
Satellite Ocean Color

scholarly journals Improvement of Atmospheric Correction of Satellite Sentinel-3/OLCI Data for Oceanic Waters in Presence of Sargassum

2022 ◽  
Vol 14 (2) ◽  
pp. 386
Author(s):  
Léa Schamberger ◽  
Audrey Minghelli ◽  
Malik Chami ◽  
François Steinmetz
Keyword(s):  
Near Infrared ◽  
Ocean Color ◽  
Atmospheric Correction ◽  
Correction Algorithm ◽  
Infrared Band ◽  
Economic Issues ◽  
Optical Signature ◽  
Color Data ◽  
The Caribbean ◽  
Satellite Ocean Color

The invasive species of brown algae Sargassum gathers in large aggregations in the Caribbean Sea, and has done so especially over the last decade. These aggregations wash up on shores and decompose, leading to many socio-economic issues for the population and the coastal ecosystem. Satellite ocean color data sensors such as Sentinel-3/OLCI can be used to detect the presence of Sargassum and estimate its fractional coverage and biomass. The derivation of Sargassum presence and abundance from satellite ocean color data first requires atmospheric correction; however, the atmospheric correction procedure that is commonly used for oceanic waters needs to be adapted when dealing with the occurrence of Sargassum because the non-zero water reflectance in the near infrared band induced by Sargassum optical signature could lead to Sargassum being wrongly identified as aerosols. In this study, this difficulty is overcome by interpolating aerosol and sunglint reflectance between nearby Sargassum-free pixels. The proposed method relies on the local homogeneity of the aerosol reflectance between Sargassum and Sargassum-free areas. The performance of the adapted atmospheric correction algorithm over Sargassum areas is evaluated. The proposed method is demonstrated to result in more plausible aerosol and sunglint reflectances. A reduction of between 75% and 88% of pixels showing a negative water reflectance above 600 nm were noticed after the correction of the several images.

Estimating net community production in the Southern Ocean based on atmospheric potential oxygen and satellite ocean color data

2012 ◽  
Vol 26 (1) ◽  
pp. n/a-n/a ◽  
Author(s):  
C. D. Nevison ◽  
R. F. Keeling ◽  
M. Kahru ◽  
M. Manizza ◽  
B. G. Mitchell ◽  
...  
Keyword(s):  
Southern Ocean ◽  
Ocean Color ◽  
Net Community Production ◽  
Color Data ◽  
Satellite Ocean Color ◽  
Potential Oxygen ◽  
Community Production

scholarly journals Estimation of near-infrared water-leaving reflectance for satellite ocean color data processing

2010 ◽  
Vol 18 (7) ◽  
pp. 7521 ◽  
Author(s):  
Sean W. Bailey ◽  
Bryan A. Franz ◽  
P. Jeremy Werdell
Keyword(s):  
Data Processing ◽  
Near Infrared ◽  
Ocean Color ◽  
Color Data ◽  
Satellite Ocean Color

scholarly journals Estimation of sea surface solar radiation at 400-700 nm using satellite ocean color data, and its validation by ship data

2016 ◽  
Vol 24 (6) ◽  
pp. A604 ◽  
Author(s):  
S.V. Vazyulya ◽  
O.V. Kopelevich ◽  
S.V. Sheberstov ◽  
V.A. Artemiev
Keyword(s):  
Solar Radiation ◽  
Ocean Color ◽  
Sea Surface ◽  
Surface Solar Radiation ◽  
Color Data ◽  
Satellite Ocean Color
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