Comparison of MODIS and AVHRR 16-Day Normalized Difference Vegetation Index Composite Data

Authors

Kevin P. Gallo, National Climatic Data CenterFollow
Lei Ji, Colorado State University
Brad Reed, U.S. Geological Survey Earth Resources Observation Systems Data CenterFollow
John Dwyer, U.S. Geological Survey Earth Resources Observation Systems Data Center
Jeffrey Eidenshink, U.S. Geological Survey

Document Type

Article

Date of this Version

2004

Citation

Geophysical Research Letters (2004) 31: L07502, DOI: 10.1029/2003GL019385.

Comments

U.S. government work.

Abstract

Normalized difference vegetation index (NDVI) data derived from visible and near-infrared data acquired by the MODIS and AVHRR sensors were compared over the same time periods and a variety of land cover classes within the conterminous USA. The relationship between the AVHRR derived NDVI values and those of future sensors is critical to continued long term monitoring of land surface properties. The results indicate that the 16-day composite values are quite similar over the 23 intervals of 2001 that were analyzed, and a linear relationship exists between the NDVI values from the two sensors. The composite AVHRR NDVI data were associated with over 90% of the variation in the MODIS NDVI values.