Impact of sea ice on ocean color remote sensing

Simon Belanger; Jens Ehn; Marcel Babin

doi:10.1117/12.616821

22 August 2005 Impact of sea ice on ocean color remote sensing

Simon Belanger, Jens Ehn, Marcel Babin

Proceedings Volume 5885, Remote Sensing of the Coastal Oceanic Environment; 588509 (2005) https://doi.org/10.1117/12.616821
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

We study two types of contamination of Ocean Color data related to the presence of sea ice. The first type, referred to as the adjacency effect, is the contamination of the radiance from the intended target by photons scattered in atmosphere towards the sensor but originating from a bright object such as sea ice nearby the target. The second type results from the presence of sub-pixel sea ice. In the case of the adjacency effect, the contribution of the icy environment to the top-of-atmosphere signal in the visible is not fully removed by the atmospheric correction algorithm, leading to an overestimation of the water-leaving reflectance. This is due to the strong spectral increase of atmospheric scattering with decreasing wavelength. The adjacency effect being more important at short wavelengths, the chlorophyll estimates based on the blue-to-green ratio will tend to decrease as the field of view approaches the ice edge. Conversely, contamination by sub-pixel sea ice results in an underestimation of the water-leaving reflectance, especially in the blue domain, and consequently to an overestimation of the chlorophyll concentration. The magnitude of the errors depends on the type of ice contaminating the pixel. It is more important for ice with high reflectance ratios for the wavebands 765 to 865 nm. Absolute error on the water-leaving reflectance up to 0.7% was observed, which is not acceptable for Ocean Color applications intending inversion of inherent optical properties from the absolute radiance, and for validation and vicarious calibration activities.

Citation Download Citation

Simon Belanger, Jens Ehn, and Marcel Babin "Impact of sea ice on ocean color remote sensing", Proc. SPIE 5885, Remote Sensing of the Coastal Oceanic Environment, 588509 (22 August 2005); https://doi.org/10.1117/12.616821

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Reflectivity

Aerosols

Atmospheric particles

Atmospheric corrections

Contamination

Remote sensing

Scattering

Show All Keywords

Keywords/Phrases

Search In:

Publication Years