Spectral sensitivity of radiative transfer inversion for seasonal canopy pigments estimation from aviris data in a woodland savanna ecosystem

Karine Adeline, Keely Roth, M. Huesca Martinez, Jean-Philippe Gastellu-Etchegorry, Dennis Baldocchi, Susan Ustin

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

1 Citation (Scopus)

Abstract

Leaf pigments are an important contributor to a plant's physiological and ecological functioning. Their measurement on a seasonal basis is important for understanding plant response and adaptation to stress, such as the extended California drought. In this preliminary study, chlorophylls a+b and carotenoids content were estimated at canopy level using a coupled leaf-canopy radiative transfer model (DART and PROSPECT) and a look-up table inversion approach, from AVIRIS imagery acquired in spring, summer and fall 2013. The study area is a woodland savanna. Results showed high sensitivity to soil background, low canopy cover, and LAI values, resulting in a low spectral contribution of the pigments to the remote sensing spectra. Selected spectral intervals proved more robust for estimating pigments than vegetation indices such as TCARI and OSAVI for chlorophyll, and a carotenoid band ratio.
Original languageEnglish
Title of host publicationWorkshop on Hyperspectral Image and Signal Processing
Subtitle of host publicationEvolution in Remote Sensing (WHISPERS)
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)978-1-5090-0608-3
DOIs
Publication statusPublished - Aug 2016
Externally publishedYes
Event8th Workshop on hyperspectral image and signal processing: Evolution in remote sensing - UCLA, Los Angeles, United States
Duration: 21 Aug 201624 Aug 2016
Conference number: 8

Conference

Conference8th Workshop on hyperspectral image and signal processing
Abbreviated titleWHISPERS
CountryUnited States
CityLos Angeles
Period21/08/1624/08/16

Keywords

  • ITC-CV

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