Spectral compatibility of vegetation indices across sensors: Band decomposition analysis with Hyperion data

Youngwook Kim, Alfredo R. Huete, Tomoaki Miura, Zhangyan Jiang

Research output: Contribution to journalArticlepeer-review

63 Citations (Scopus)

Abstract

Vegetation indices (VIs) are widely used in long-term measurement studies of vegetation changes, including seasonal vegetation activity and interannual vegetation-climate interactions. There is much interest in developing cross-sensor/multi-mission vegetation products that can be extended to future sensors while maintaining continuity with present and past sensors. In this study we investigated multi-sensor spectral bandpass dependencies of the enhanced vegetation index (EVI), a 2-band EVI (EVI2), and the normalized difference vegetation index (NDVI) using spectrally convolved Earth Observing-1 (EO-1) Hyperion satellite images acquired over a range of vegetation conditions. Two types of analysis were carried out, including (1) empirical relationships among sensor reflectances and VIs and (2) decomposition of bandpass contributions to observed cross-sensor VI differences. VI differences were a function of cross-sensor bandpass disparities and the integrative manner in which bandpass differences in red, near-infrared (NIR), and blue reflectances combined to influence a VI. Disparities in blue bandpasses were the primary cause of EVI differences between the Moderate Resolution Imaging Spectroradiometer (MODIS) and other course resolution sensors, including the upcoming Visible Infrared Imager/Radiometer Suite (VIIRS). The highest compatibility was between VIIRS and MODIS EVI2 while AVHRR NDVI and EVI2 were the least compatible to MODIS.

Original languageEnglish
Article number043520
JournalJournal of Applied Remote Sensing
Volume4
Issue number1
DOIs
Publication statusPublished - 2010
Externally publishedYes

Keywords

  • MODIS
  • VIIRS
  • band decomposition
  • continuity
  • enhanced vegetation index
  • normalized difference vegetation index
  • two-band enhanced vegetation index
  • vegetation index

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)

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