MODTRAN® scattering: Extracting spherical-refractive path contributions from plane-parallel disort

Alexander Berk, Knut Stamnes, Zhenyi Lin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

4 Scopus citations

Abstract

The well-established and extensively validated atmospheric radiative transfer model MODTRAN®1 is widely used by the remote sensing community to define the mapping from surface spectral reflectance to solar scatter radiance as a function of atmosphere definition. This mapping is subsequently used in atmospheric correction/compensation models to define the reverse mapping from multi- and hyperspectral images to ground surface spectral reflectances. Since MODTRAN employs a stratified spherical shell atmosphere and accounts for spherical refraction, its applicability extends to low sun and highly off-nadir scenarios. The discrete ordinate module DISORT solves the RTE to compute multiple scattering solar path radiances for MODTRAN. However, there is a problem: DISORT is a plane-parallel atmosphere model. In this paper, a method for modifying DISORT to compute the curved-path segment radiance contributions required by MODTRAN is described.

Original languageEnglish
Title of host publication2017 IEEE International Geoscience and Remote Sensing Symposium
Subtitle of host publicationInternational Cooperation for Global Awareness, IGARSS 2017 - Proceedings
Pages1453-1456
Number of pages4
ISBN (Electronic)9781509049516
DOIs
StatePublished - 1 Dec 2017
Event37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017 - Fort Worth, United States
Duration: 23 Jul 201728 Jul 2017

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume2017-July

Conference

Conference37th Annual IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2017
Country/TerritoryUnited States
CityFort Worth
Period23/07/1728/07/17

Keywords

  • DISORT scatter
  • MODTRAN radiative transfer
  • solar radiance modeling
  • visible/shortwave infrared

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