0

Full Content is available to subscribers

Subscribe/Learn More  >
Proceedings Article

Building a global hotspot ecology with Triana data

[+] Author Affiliations
Siegfried A. W. Gerstl

Los Alamos National Lab. (USA)

Proc. SPIE 3868, Remote Sensing for Earth Science, Ocean, and Sea Ice Applications, 184 (December 17, 1999); doi:10.1117/12.373094
Text Size: A A A
From Conference Volume 3868

  • Remote Sensing for Earth Science, Ocean, and Sea Ice Applications
  • Giovanna Cecchi; Edwin T. Engman; Eugenio Zilioli
  • Florence, Italy | September 20, 1999

abstract

Triana is an Earth remote sensing satellite to be located at the distant Langrange Point L-1, the gravity-neutral point between the Earth and the Sun. It will provide continuous fill disk images of the entire sunlit side of the Earth with 8 km pixel resolution. The primary remote sensing instrument on Triana is a calibrated multispectral imager with 10 spectral channels in the UV, VIS, and NIR between 317 and 870 nm (reflected solar radiation). Due to its unique location at the Lagrange L-1 point, in the direct line-of-sight between Earth and Sun, Triana will view the Earth always in and near the solar retro-reflection direction which is also known as the hotspot direction. The canopy hotspot effect has rich information content for vegetation characterization, especially indications of canopy structure and vegetation health and stress situations. Primary vegetation-related data are the hotspot angular width W, and a hotspot factor C that quantifies the magnitude of the hotspot effect. Both quantities are related to the structural parameters of canopy height, foliage size, shape, and leaf area index (LAI). The continuous observations by Triana will allow us to establish time-series of these ecological parameters for all land biomes by longitude, latitude, and wavelength, that form the basis data set for a new global hotspot land vegetation ecology. The hotspot factor C will allow the determination of the enhanced radiant flux reflected from the Earth into space due to the hotspot effect. The hotspot flux enhancement due to the vegetation hotspot effect is estimated to account for about 1% of the entire Earth radiative energy balance.

© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Siegfried A. W. Gerstl
"Building a global hotspot ecology with Triana data", Proc. SPIE 3868, Remote Sensing for Earth Science, Ocean, and Sea Ice Applications, 184 (December 17, 1999); doi:10.1117/12.373094; http://dx.doi.org/10.1117/12.373094


Access This Article
Sign In to Access Full Content
Please Wait... Processing your request... Please Wait.
Sign in or Create a personal account to Buy this article ($15 for members, $18 for non-members).
 

Figures

Tables

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Related Book Chapters

Topic Collections

Advertisement

Buy this article ($18 for members, $25 for non-members).
Sign In