Journal of Remote Sensing & GIS

Space Applications Division, Arthur C Clarke Institute for Modern Technologies, Katubedda, Moratuwa, Sri Lanka

Biography

Jayawardhana WGNN is a Research Scientist and belongs to Space Applications Division in Arthur C Clarke Institute for Modern Technologies and is interested in the various fields of Satellite Image Analysis, SAR Interferometry, Satellite Image Processing, Remote Sensing and Forest height estimation.

Publications

• Research Article   
  Investigate the Sensitivity of the Satellite-Based Agricultural Drought Indices to Monitor the Drought Condition of Paddy and Introduction to Enhanced Multi-Temporal Drought Indices
  Author(s): Jayawardhana WGNN* and Chathurange VMI
  
  Vegetation Health Monitoring from space and the Normalized Difference Vegetation Index (NDVI) are widely used in the field of photosynthesis capacity of vegetation. The number of drought indices calculates by comparing the NDVI of time of observation with the Long term NDVI values and called as “multi-temporal drought indices” in this study. Some are developed using only the data of the time of observation and no time-series data required, therefore called “ non-temporal drought indices ” . This study analyzed multi-temporal and non-temporal drought indices calculated using NDVI, Normalized Difference Water Index (NDWI), and Land Surface Temperature (LST). These indices utilize not only to monitor agricultural droughts but monitor the crop condition also. Freely available 19 years MODIS satellite data (MOD13Q1 and MOD11A2) were used to calc.. View more»
  

  DOI: 10.35248/2469-4134.20.9.272

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