Unified four-stream radiative transfer theory in the optical-thermal domain with consideration of fluorescence for multi-layer vegetation canopies

Peiqi Yang*, W. Verhoef, C. van der Tol

*Corresponding author for this work

Research output: Contribution to journalComment/Letter to the editorAcademicpeer-review

Abstract

Vegetation radiative transfer models (RTMs) are important tools to understand biosphere-atmosphere interactions. The four-stream theory has been successfully applied to solve the radiative transfer problems in homogeneous canopies for both incident solar radiation, thermal and fluorescence emission since 1984. In this note, we describe the development of a unified radiative transfer theory for optical scattering, thermal and fluorescence emission in multi-layer vegetation canopy, and provide a detailed mathematical derivation for the fluxes inside and leaving the canopy. This theory can be used to develop vegetation models for remote sensing applications and plant physiological processes, such as photosynthesis and transpiration. It can also be used to solve the radiative transfer problems in soil-water, soil-water-atmosphere, or soil-vegetation-atmosphere ensembles, besides the soil-vegetation system presented in the note.

Original languageEnglish
Article number3914
Pages (from-to)1-19
Number of pages19
JournalRemote sensing
Volume12
Issue number23
DOIs
Publication statusPublished - 28 Nov 2020

Keywords

  • Four stream
  • Models
  • Multi-layer
  • Radiative transfer
  • SAIL
  • SCOPE
  • ITC-ISI-JOURNAL-ARTICLE
  • ITC-GOLD

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