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A new simple concept for ocean colour remote sensing using parallel polarisation radiance.

Xianqiang He1, Delu Pan2, Yan Bai3

  • 11] State Key Laboratory of Satellite Ocean Environment Dynamics, Second Institute of Oceanography, State Oceanic Administration, Hangzhou, China [2] Department of Ocean Science and Engineering, Zhejiang University, Hangzhou, China.

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This study introduces parallel polarization radiance (PPR) for ocean color remote sensing, reducing sun glint and improving atmospheric and water property detection. Future sensors should adopt PPR for enhanced ocean observation capabilities.

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Area of Science:

  • Earth and Ocean Sciences
  • Atmospheric Science
  • Optical Physics

Background:

  • Ocean colour remote sensing has been vital for marine ecosystem and climate change research for decades.
  • Traditional methods rely on top-of-atmosphere (TOA) radiation intensity, neglecting polarization's potential.
  • Polarization data offers valuable insights into atmospheric and oceanic optical properties.

Purpose of the Study:

  • To introduce a novel concept for ocean colour remote sensing using parallel polarization radiance (PPR).
  • To demonstrate the advantages of PPR over traditional radiation intensity measurements.
  • To propose enhancements for future ocean colour sensor technology.

Main Methods:

  • Utilized vector radiative transfer simulations.
  • Analyzed polarimetric satellite sensing data.
  • Compared PPR measurements with traditional intensity-based methods.

Main Results:

  • Parallel polarization radiance (PPR) effectively mitigates sun glint contamination in satellite imagery.
  • PPR enhances the detection of ocean colour signals at the top-of-atmosphere.
  • Demonstrated significant improvements in data quality and information content.

Conclusions:

  • The proposed PPR concept offers a significant advancement for ocean colour remote sensing.
  • This approach can improve our understanding of marine ecosystems and climate change.
  • Recommends incorporating PPR measurements in next-generation ocean colour sensors for enhanced observational capabilities.