Generation of Vegetation Fraction and Surface Albedo Products Over India from Ocean Colour Monitor (OCM) Data Onboard Oceansat-2 |
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| Authors: | A Senthil Kumar T Radhika PK Saritha V Keerthi R N Anjani M Suresh Kumar K S Sekhar P Satyanarayana M S Naga Sudha M V R Sesha Sai V K Dadhwal |
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| Institution: | 1. National Remote Sensing Center (ISRO), Balanagar, Hyderabad, 500037, India
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| Abstract: | The use of Local Area Coverage (LAC) data from Ocean Color Monitor (OCM) sensor of Oceansat-2 with its high radiometric resolution (12 bits/pixel) and 2-day repeat cycle for rapid monitoring of vegetation growth and estimating surface albedo for the Indian region is demonstrated in this study. For the vegetation monitoring, normalized difference vegetation index (NDVI) and vegetation fraction (VF) products were estimated by maximum value composite approach fortnightly and were resampled to 1 km. The surface albedo products were realized by converting narrow-band eight-band spectral reflectance OCM data to a) visible (300–700 nm) and b) broad band (300–3,000 nm) data. For validation, the derived products were compared with respective MODIS global products and found to be in good agreement. |
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