Atmospheric correction for hyperspectral ocean color retrieval with application to the Hyperspectral Imager for the Coastal Ocean (HICO)

REMOTE SENSING OF ENVIRONMENT

卷:204

Article

Ibrahim, Amir^1,2  Franz, Bryan¹  Ahmad, Ziauddin^1,3  Healy, Richard^1,4  Knobelspiesse, Kirk¹  Gao, Bo-Cai⁵  Proctor, Chris^1,6  Zhai, Peng-Wang⁷ 

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA

[2] Univ Space Res Assoc, Columbia, MD USA

[3] JHT Inc, Arlington, VA USA

[4] Sci Applicat Int Corp, Greenbelt, MD USA

[5] Naval Res Lab, Washington, DC 20375 USA

[6] Sci Syst & Applicat Inc, Greenbelt, MD USA

[7] Univ Maryland Baltimore Cty, Baltimore, MD 21228 USA

关键词: Atmospheric correction;    Water vapor;    Ocean color;    Hyperspectral remote sensing;    Hyperspectral Imager for Coastal Ocean (HICO);    Vicarious calibration;    Plankton, Aerosol, Cloud, ocean Ecosystem (PACE);   

DOI  :  10.1016/j.rse.2017.10.041

来源: Elsevier

【 摘 要 】

The classical multi-spectral Atmospheric Correction (AC) algorithm is inadequate for the new generation of spaceborne hyperspectral sensors such as NASA's first hyperspectral Ocean Color Instrument (OCI) onboard the anticipated Plankton, Aerosol, Cloud, ocean Ecosystem (PACE) satellite mission. The AC process must estimate and remove the atmospheric path radiance contribution due to the Rayleigh scattering by air molecules and scattering by aerosols from the measured top-of-atmosphere (TOA) radiance, compensate for the absorption by atmospheric gases, and correct for reflection and refraction of the air-sea interface. In this work, we present and evaluate an improved AC for hyperspectral sensors developed within NASA's SeaWiFS Data Analysis System software package (SeaDAS). The improvement is based on combining the classical AC approach of multi-spectral capabilities to correct for the atmospheric path radiance, extended to hyperspectral, with a gas correction algorithm to compensate for absorbing gases in the atmosphere, including water vapor. The SeaDAS-hyperspectral version is capable of operationally processing the AC of any hyperspectral airborne or spaceborne sensor. The new algorithm development was evaluated and assessed using the Hyperspectral Imager for Coastal Ocean (HICO) scenes collected at the Marine Optical BuoY (MOBY) site, and other SeaWiFS Bio-optical Archive and Storage System (SeaBASS) and AERosol Robotic NETwork-Ocean Color (AERONET-OC) coastal sites. A hyperspectral vicarious calibration was applied to HICO, showing the validity and consistency of HICO's ocean color products. The hyperspectral AC capability is currently available in SeaDAS to the scientific community at hreps://oceancolongsfc.nasa.govi.

【 授权许可】

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