Method of Monitoring Forest Vegetation Change based on Change of MODIS NDVI Time Series Pattern

Operational Drought Monitoring in Kenya Using MODIS NDVI Time Series

Reliable drought information is of utmost importance for efficient drought management. This paper presents a fully operational processing chain for mapping drought occurrence, extent and strength based on Moderate Resolution Imaging Spectroradiometer (MODIS) normalized difference vegetation index (NDVI) data at 250 m resolution. Illustrations are provided for the territory of Kenya. The process...

monitoring of vegetation cover change in helen forested protected area and its causes based on bi-temporal analysis of ndvi

this paper aims to detect occurred changes in vegetation cover of forested helen protected area using extracted ndvis from bi-temporal multispectral images of landsat tm. to do so, at first forest areas with low and moderate density cover were identified and separated on land use map. then preprocessing applications including radiometric corrections were done on both 1990 and 2009 images. also ...

Distance metric-based forest cover change detection using MODIS time series

More than 12 years of global observations are now available from NASA’s Moderate Resolution Imaging Spectroradiometer (MODIS). As this time series grows, the MODIS archive provides new opportunities for identification and characterization of land cover at regional to global spatial scales and interannual to decadal temporal scales. In particular, the high temporal frequency of MODIS provides a ...

Impact of sensor degradation on the MODIS NDVI time series

Performance of Smoothing Methods for Reconstructing NDVI Time-Series and Estimating Vegetation Phenology from MODIS Data

Many time-series smoothing methods can be used for reducing noise and extracting plant phenological parameters from remotely-sensed data, but there is still no conclusive evidence in favor of one method over others. Here we use moderate-resolution imaging spectroradiometer (MODIS) derived normalized difference vegetation index (NDVI) to investigate five smoothing methods: Savitzky-Golay fitting...