Natural Resources, School of

 

Date of this Version

2004

Comments

Published in IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, VOL. 1, NO. 1, JANUARY 2004. Copyright © 2004 IEEE

Abstract

A new and unique vegetation greenness forecast (VGF) model was designed to predict future vegetation conditions to three months through the use of current and historical climate data and satellite imagery. The VGF model is implemented through a seasonality-adjusted autoregressive distributed-lag function, based on our finding that the normalized difference vegetation index is highly correlated with lagged precipitation and temperature. Accurate forecasts were obtained from the VGF model in Nebraska grassland and cropland. The regression R2 values range from 0.97–0.80 for 2–12 week forecasts, with higher R2 associated with a shorter prediction. An important application would be to produce real-time forecasts of greenness images.