Skip to main content
Article
The Suitability of Multi-temporal Web-enabled Landsat Data NDVI for Phenological Monitoring – a Comparison with Flux Tower and MODIS NDVI
GSCE Faculty Publications
  • V. Kovalskyy, South Dakota State University
  • David P. Roy, South Dakota State University
  • Xiaoyang Zhang, South Dakota State University
  • Junchang Ju, South Dakota State University
Document Type
Article
Publication Version
Version of Record
Publication Date
1-1-2012
Description

Three years of flux-tower-derived normalized difference vegetation index (NDVI) data were compared with contemporaneous 30 m web-enabled Landsat data (WELD) and with 500 m Moderate-Resolution Imaging Spectroradiometer (MODIS) nadir bidirectional reflectance distribution function-adjusted reflectance (NBAR) NDVI data to assess the relative suitability of these different resolutions of freely available satellite data for phenological monitoring. Comparisons were made at two flux tower sites in the United States with average to above average cloud cover. The WELD 30 m NDVI data were found to have higher correlation with the flux tower NDVI data than the MODIS 500 m NBAR NDVI data. The dates of vegetation green-up onset and maximum-greenness onset, derived using an established phenological metric extraction methodology, were generally closer between the flux tower and WELD NDVI data than between the flux tower and MODIS NBAR data. These results indicate that the WELD NDVI time series is suitable for 30 m scale phenological monitoring.

DOI of Published Version
10.1080/01431161.2011.593581
Publisher
Taylor and Francis
Citation Information
V. Kovalskyy, David P. Roy, Xiaoyang Zhang and Junchang Ju. "The Suitability of Multi-temporal Web-enabled Landsat Data NDVI for Phenological Monitoring – a Comparison with Flux Tower and MODIS NDVI" Vol. 3 Iss. 4 (2012)
Available at: http://works.bepress.com/xiaoyang-zhang/30/